FILE NO. A07-009
SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE
OUTDOOR UNIT <DIGITAL INVERTER>
RAV-SM1603AT-E
RAV-SM1603ATZ-E
RAV-SM1603ATZG-E
INDOOR UNIT <DIGITAL INVERTER>
RAV-SM1403DT-A
RAV-SM1603DT-A
∗ Refer to the Service Manual with File No. A06-010 for Model RAV-SM1403AT-E, and refer to the
Service Manual with File No. A07-003 for Model RAV-SP1403AT-E, respectively.
R410A
PRINTED IN JAPAN, Jun, 2008 ToMo
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6. REFRIGERANT R410A ............................................................................ 35
6-1. Safety During Installation/Servicing ............................................................... 35
6-2. Refrigerant Piping Installation....................................................................... 35
6-3. Tools .................................................................................................................. 39
6-4. Recharging of Refrigerant................................................................................ 39
6-5. Brazing of Pipes................................................................................................ 40
6-6. Instructions for Re-use Piping of R22 or R407C ............................................ 42
6-7. Tolerance of Pipe Length and Pipe Head........................................................ 46
6-8. Additional Refrigerant Amount........................................................................ 48
6-9. Piping Materials and Sizes............................................................................... 50
6-10. Branch Pipe....................................................................................................... 51
6-11. Distributor ......................................................................................................... 51
7. INDOOR CONTROL CIRCUIT ................................................................. 52
7-1. Indoor Controller Block Diagram..................................................................... 52
7-2. Control Specifications...................................................................................... 53
7-3. Optional Connector Specifications of Indoor P.C. Board .............................. 59
7-4. Indoor Print Circuit Board ................................................................................ 60
7-5. Outdoor Print Circuit Board ............................................................................. 61
8. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS........... 64
8-1. Outdoor Controls .............................................................................................. 64
9. INDOOR UNIT TROUBLESHOOTING...................................................... 69
9-1. Summary ofTroubleshooting........................................................................... 69
9-2. Troubleshooting ................................................................................................ 70
10. OUTDOOR UNITTROUBLESHOOTING.................................................. 83
10-1. Summary ofTroubleshooting........................................................................... 83
10-2. Troubleshooting ................................................................................................ 85
11. REPLACEMENT OF SERVICE P.C. BOARD ......................................... 112
11-1. Indoort Unit ..................................................................................................... 112
12. SETUP AT LOCAL SITE AND OTHERS ................................................ 116
12-1. Indoor Unit....................................................................................................... 116
12-2. Setup at Local Site / Others ........................................................................... 123
12-3. How to Set up Central Control Address Number ......................................... 125
13. ADDRESS SETUP.................................................................................. 127
13-1. Address Setup Procedure.............................................................................. 127
13-2. Address Setup & Group Control.................................................................... 128
13-3. Address Setup (Manual Setting from Remote Controller)........................... 131
14. DETACHMENTS ..................................................................................... 133
14-1. Indoor Unit....................................................................................................... 133
14-2. Outdoor Unit.................................................................................................... 141
15. EXPLODED VIEWS AND PARTS LIST .................................................. 150
15-1. Indoor Unit....................................................................................................... 150
15-2. Outdoor Unit.................................................................................................... 153
– 3 –
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SAFETY CAUTION
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
Indication
Explanation
Indicates contents assumed that an imminent danger causing a death or serious injury of
the repair engineers and the third parties when an incorrect work has been executed.
DANGER
Indicates possibilities assumed that a danger causing a death or serious injury of the repair
engineers, the third parties, and the users due to troubles of the product after work when
an incorrect work has been executed.
WARNING
CAUTION
Indicates contents assumed that an injury or property damage (∗) may be caused on the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet
[Explanation of illustrated marks]
Mark
Explanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (Including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions
(Refer to the Parts disassembly diagram (Outdoor unit).)
If removing the label during parts replace, stick it as the original.
DANGER
Turn “OFF” the breaker before removing the front panel and cabinet, otherwise an electric
shock is caused by high voltage resulted in a death or injury.
During operation, a high voltage with 400V or higher of circuit (∗) at secondary circuit of the
high-voltage transformer is applied.
If touching a high voltage with the naked hands or body, an electric shock is caused even if using an
electric insulator.
Turn off breaker.
∗ : For details, refer to the electric wiring diagram.
When removing the front panel or cabinet, execute short-circuit and discharge between high-
voltage capacitor terminals.
If discharge is not executed, an electric shock is caused by high voltage resulted in a death or injury.
Execute discharge
between terminals. After turning off the breaker, high voltage also keeps to apply to the high-voltage capacitor.
Do not turn on the breaker under condition that the front panel and cabinet are removed.
An electric shock is caused by high voltage resulted in a death or injury.
Prohibition
– 4 –
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WARNING
Before troubleshooting or repair work, check the earth wire is connected to the earth
terminals of the main unit, otherwise an electric shock is caused when a leak occurs.
If the earth wire is not correctly connected, contact an electric engineer for rework.
Check earth wires.
Prohibition of modification.
Use specified parts.
Do not modify the products.
Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.
For spare parts, use those specified (∗).
If unspecified parts are used, a fire or electric shock may be caused.
∗: For details, refer to the parts list.
Before troubleshooting or repair work, do not bring a third party (a child, etc.) except
the repair engineers close to the equipment.
It causes an injury with tools or disassembled parts.
Do not bring a child
close to the equipment.
Please inform the users so that the third party (a child, etc.) does not approach the equipment.
Connect the cut-off lead wires with crimp contact, etc, put the closed end side upward
and then apply a water-cut method, otherwise a leak or production of fire is caused at
the users’ side.
Insulating measures
When repairing the refrigerating cycle, take the following measures.
1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire
before work; otherwise the oil mixed with refrigerant gas may catch fire.
2) Do not use a welder in the closed room.
No fire
When using it without ventilation, carbon monoxide poisoning may be caused.
3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may
catch the inflammables.
Check the used refrigerant name and use tools and materials of the parts which
match with it.
For the products which use R410A refrigerant, the refrigerant name is indicated at a position
on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service
port is changed from one of the former R22.
For an air conditioner which uses R410A, never use other refrigerant than R410A.
For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.
If different types of refrigerant are mixed, abnormal high pressure generates in the
refrigerating cycle and an injury due to breakage may be caused.
Do not charge refrigerant additionally.
If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in
the refrigerating cycle changes resulted in change of air conditioner characteristics or
refrigerant over the specified standard amount is charged and an abnormal high pressure is
applied to the inside of the refrigerating cycle resulted in cause of breakage or injury.
Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute
vacuuming, and then newly recharge the specified amount of liquid refrigerant.
In this time, never charge the refrigerant over the specified amount.
Refrigerant
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant
or air other than R410A into the specified refrigerant.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the
refrigerating cycle resulted in cause of injury due to breakage.
After installation work, check the refrigerant gas does not leak.
If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire
such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
Never recover the refrigerant into the outdoor unit.
When the equipment is moved or repaired, be sure to recover the refrigerant with recovering
device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident
such as breakage or injury is caused.
After repair work, surely assemble the disassembled parts, and connect and lead the
removed wires as before. Perform the work so that the cabinet or panel does not
catch the inner wires.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire
is caused at user’s side.
Assembly/Cabling
– 5 –
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WARNING
After the work has finished, be sure to use an insulation tester set (500V Megger) to
check the resistance is 2MΩ or more between the charge section and the non-charge
metal section (Earth position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s
side.
Insulator check
Ventilation
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches to a fire, poisonous gas generates.
A case of leakage of the refrigerant and the closed room full with gas is dangerous because
a shortage of oxygen occurs. Be sure to execute ventilation.
When checking the circuit inevitably under condition of the power-ON, use rubber
gloves and others not to touch to the charging section.
If touching to the charging section, an electric shock may be caused.
Be attentive to
electric shock
When the refrigerant gas leaks, find up the leaked position and repair it surely.
If the leaked position cannot be found up and the repair work is interrupted, pump-down and
tighten the service valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking
stove though the refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant such
as a multi air conditioner in a sub-room, it is necessary that the density does not the
limit even if the refrigerant leaks.
Compulsion
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is
caused.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric
shock or fire is caused.
After repair work has finished, check there is no trouble.
If check is not executed, a fire, electric shock or injury may be caused.
For a check, turn off the power breaker.
Check after repair
After repair work (installation of front panel and cabinet) has finished, execute a test
run to check there is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused.
Before test run, install the front panel and cabinet.
Check the following items after reinstallation.
Check after reinstallation
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
CAUTION
Be sure to put on the gloves (∗) and a long sleeved shirt:
otherwise an injury may be caused with the parts, etc.
(∗) Heavy gloves such as work gloves
Put on gloves
Cooling check
When the power was turned on, start to work after the equipment has been
sufficiently cooled.
As temperature of the compressor pipes and others became high due to cooling/heating
operation, a burn may be caused.
– 6 –
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• New Refrigerant (R410A)
This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer.
1. Safety Caution Concerned to New Refrigerant
The pressure of R410A is high 1.6 times of that of the former refrigerant (R22).
Accompanied with change of refrigerant, the refrigerating oil has been also changed.
Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the
refrigerating cycle of the air conditioner with new refrigerant during installation work or service work.
If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident.
Use the tools and materials exclusive to R410A to purpose a safe work.
2. Cautions on Installation/Service
1) Do not mix the other refrigerant or refrigerating oil.
For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of
the former refrigerant in order to prevent mixture of them.
2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools which are
specified for R410A.
3) In the installation time, use clean pipe materials and work with great attention so that water and others do
not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc.
Use the clean pipes.
Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.)
4) For the earth protection, use a vacuum pump for air purge.
5) R410A refrigerant is azeotropic mixture type refrigerant.
Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the
refrigerant changes and then characteristics of the air conditioner change.)
3. Pipe Materials
For the refrigerant pipes, copper pipe and joints are mainly used.
It is necessary to select the most appropriate pipes to conform to the standard.
Use clean material in which impurities adhere inside of pipe or joint to a minimum.
1) Copper pipe
<Piping>
The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type.
When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe
without seam” and one with bonded oil amount 40mg/10m or less.
Also do not use crushed, deformed, discolored (especially inside) pipes.
(Impurities cause clogging of expansion valves and capillary tubes.)
<Flare nut>
Use the flare nuts which are attached to the air conditioner unit.
2) Joint
The flare joint and socket joint are used for joints of the copper pipe.
The joints are rarely used for installation of the air conditioner. However clear impurities when using them.
– 7 –
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4. Tools
1. Required Tools for R410A
Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary,
etc. Accordingly, the tools to be used are classified into the following three types.
1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3) Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
R410A
air conditioner installation
Conventional air
conditioner installation
No.
Used tool
Usage
Existence of
new equipment
for R410A
Whether conven-
tional equipment
can be used
Whether conventional
equipment can be used
Flare tool
Pipe flaring
Yes
Yes
Ye s
*(Note)
*(Note)
N o
Ye s
*(Note)
No
‚
Copper pipe gauge for
adjusting projection margin flare tool
Flaring by conventional
Torque wrench
Tightening of flare nut
ƒ
„
ꢀ
†
Gauge manifold
Charge hose
Evacuating, refrigerant
charge, run check, etc.
Ye s
N o
No
Vacuum pump adapter
Vacuum evacuating
Refrigerant charge
Ye s
Ye s
N o
Ye s
Ye s
Electronic balance for
refrigerant charging
Ye s
‡
Refrigerant cylinder
Leakage detector
Refrigerant charge
Gas leakage check
Ye s
Ye s
N o
N o
No
ˆ
‰
Ye s
(Note) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1) Vacuum pump. Use vacuum pump by
attaching vacuum pump adapter.
2) Torque wrench
3) Pipe cutter
7) Screwdriver (+, –)
8) Spanner or Monkey wrench
9) Hole core drill
4) Reamer
10) Hexagon wrench (Opposite side 4mm)
11) Tape measure
5) Pipe bender
6) Level vial
12) Metal saw
Also prepare the following equipments for other installation method and run check.
1) Clamp meter
2) Thermometer
3) Insulation resistance tester (Megger)
4) Electroscope
– 8 –
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1. SPECIFICATIONS
1-1. Indoor Unit
1-1-1. High Static DuctType
<Single type>
Indoor unit
Model
RAV- SM1403DT-A SM1403DT-A
SM1603DT-A
Outdoor unit
RAV- SM1403AT-E SP1404AT-E SM1603AT(Z)(ZG)-E
Cooling capacity
Heating capacity
Power supply
(kW)
(kW)
12.5
14.0
13.0
14.3
16.0
14.0
1 phase 240V, 50Hz
Running current
Power consumption
Power factor
EER
(A)
(kW)
(%)
21.3
4.95
96.8
2.53
(E)
18.5
4.32
97.3
3.01
(B)
21.97
5.01
95
Cooling
2.85
(C)
Energy efficiency class ∗
Energy rating ∗∗
—
Electrical
characteristics
Running current
(A)
16.9
3.94
97.1
3.55
(B)
14.5
3.38
97.1
4.14
(A)
20.04
4.57
95.0
3.50
(B)
Power consumption
Power factor
COP
(kW)
(%)
Heating
Energy efficiency class ∗
Energy rating ∗∗
—
Maximum current
(A)
22.8
22.8
32.0
Appearance
Main unit
Main unit
Main unit
Fan
Zinc hot dipping steel plate
Height
Width
Depth
(mm)
(mm)
(mm)
(kg)
380
Outer
dimension
1050
600
Total weight
57
Heat exchanger
Finned tube
Centrifugal fan
Standard air flow at 100Pa/HH tap (m³/min.)
Fan speed
55
55
58
2
Fan unit
Motor
(W)
(Pa)
(Pa)
600
Standard (at HH tap)
Range at HH tap
100
External
static pressure
50 – 250
Air filter
None (Arranged locally)
Controller (sold separately)
Sound pressure level
Sound power level
Remote controller
H
(dB•A)
(dB•A)
(mm)
49
64
49
50
65
H
64
Gas side
Liquid side
Drain port
15.9
9.5
Connecting pipe
(mm)
(mm)
32 (VP25)
∗ : IEC standard, ∗∗ : AS standard
– 9 –
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1-1-2. 4-way Air Discharge CassetteType
<Single type>
Indoor unit
RAV-
RAV-
(kW)
(kW)
SM1604UT-E
Model
Outdoor unit
SM1603AT(Z)(ZG)-E
Cooling capacity
14.0
Heating capacity
16.0
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
21.38 – 19.69
Power consumption
4.49
Power factor
Cooling
95
EER
3.12
Energy efficiency class ∗
Energy rating ∗∗
(B)
—
Electrical
characteristics
Running current
(A)
(kW)
(%)
21.20 – 19.43
Power consumption
4.43
Power factor
Heating
95
COP
Energy efficiency class ∗
Energy rating ∗∗
3.61
(A)
—
29.7
Maximum current
Main unit
(A)
Zinc hot dipping steel plate
RBC-U31PG (W, WS)-E,
RBC-U31PGS (W, WS)-E
Model
Appearance
Ceiling panel
(Sold separately)
W: Moon-white (2.5GY 9.0/0.5),
WS: Stripe-white (2.5GY 9.0/0.5 (Gray: 8B 3/0.3))
Panel color
Height
Width
Depth
Height
Width
Depth
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
(kg)
319
Main unit
840
840
Outer
dimension
30
Ceiling panel
(Sold separately)
950
950
Main unit
24
Total weight
Ceiling panel (Sold separately)
(kg)
4.2
Heat exchanger
Finned tube
Fan
Turbo fan
Fan unit
Air filter
Standard air flow H/M/L
Motor
(m³/min.)
(W)
35.5 / 25 / 21
72
Standard filter attached (Long life filter)
RBC-AMT32E, AMS41E,
AS21E2, AX31U (W)-E
Controller (sold separately)
Sound pressure level
Sound power level
H/M/L
(dB•A)
(dB•A)
(mm)
45 / 40 / 36
60 / 55 / 51
15.9
H/M/L
Gas side
Liquid side
Drain port
Connecting pipe
(mm)
9.5
(mm)
32 (VP25)
∗ : IEC standard, ∗∗ : AS standard
– 10 –
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<Twin type>
Indoor unit 1
Indoor unit 2
Outdoor unit
RAV-
RAV-
RAV-
(kW)
(kW)
SM804UT-E
SM804UT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
21.48 – 19.69
Power consumption
Power factor
4.49
Cooling
95
3.12
EER
Energy efficiency class ∗
Running current
Power consumption
Power factor
(B)
Electrical
characteristics
(A)
(kW)
(%)
21.20 – 19.43
4.43
Heating
Fan
95
COP
3.61
Energy efficiency class ∗
(A)
Turbo fan
20.5 / 16.0 / 13.5
20
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
35 / 31 / 28
50 / 46 / 43
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
15.9
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
9.5
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 11 –
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<Triple type>
Indoor unit 1
Indoor unit 2
Indoor unit 3
Outdoor unit
RAV-
RAV-
RAV-
RAV-
(kW)
(kW)
SM564UT-E
SM564UT-E
SM564UT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
21.48 – 19.69
Power consumption
Power factor
4.49
Cooling
95
3.12
EER
Energy efficiency class ∗
Running current
Power consumption
Power factor
(B)
Electrical
characteristics
(A)
(kW)
(%)
21.20 – 19.43
4.43
Heating
Fan
95
COP
3.61
Energy efficiency class ∗
(A)
Turbo fan
17.5 / 14.5 / 13.0
14
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
32 / 29 / 28
47 / 44 / 43
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
12.7
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
6.4
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 12 –
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1-1-3. Concealed DuctType
<Twin type>
Indoor unit 1
RAV-
RAV-
RAV-
(kW)
(kW)
SM802BT-E
SM802BT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Indoor unit 2
Outdoor unit
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
24.50 – 22.46
Power consumption
Power factor
5.12
Cooling
95
EER
2.73
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
22.44 – 20.57
4.69
Electrical
characteristics
(A)
(kW)
(%)
Heating
Fan
95
COP
3.41
Energy efficiency class ∗
—
Centrifugal fan
19.0 / 16.2 / 13.3
120
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Fan unit
Standard (at shipment)
(Pa)
40
External
static pressure
Set up for tap exchange
(Pa)
20 / 40 / 70 / 100
40 / 37 / 34
55 / 52 / 49
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
15.9
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
9.5
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 13 –
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<Triple type>
Indoor unit 1
Indoor unit 2
Indoor unit 3
Outdoor unit
RAV-
RAV-
RAV-
RAV-
(kW)
(kW)
SM562BT-E
SM562BT-E
SM562BT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
24.50 – 22.46
Power consumption
Power factor
5.12
Cooling
95
EER
2.73
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
22.44 – 20.57
4.69
Electrical
characteristics
(A)
(kW)
(%)
Heating
Fan
95
COP
3.41
Energy efficiency class ∗
—
Centrifugal fan
13.0 / 11.9 / 9.8
120
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Fan unit
External static pressure (Factory setting)
External static pressure
(Pa)
40
(Pa)
20 / 40 / 70 / 100
40 / 37 / 33
55 / 52 / 48
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
12.7
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
6.4
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 14 –
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1-1-4. Under CeilingType
<Twin type>
Indoor unit 1
RAV-
RAV-
RAV-
(kW)
(kW)
SM802CT-E
SM802CT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Indoor unit 2
Outdoor unit
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
23.88 – 21.89
Power consumption
Power factor
4.99
Cooling
95
EER
2.81
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
22.44 – 20.57
4.69
Electrical
characteristics
(A)
(kW)
(%)
Heating
Fan
95
COP
3.41
Energy efficiency class ∗
—
Centrifugal fan
18.5 / 16.7 / 14.6
60
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
38 / 36 / 33
53 / 51 / 48
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
15.9
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
9.5
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 15 –
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<Triple type>
Indoor unit 1
Indoor unit 2
Indoor unit 3
Outdoor unit
RAV-
RAV-
RAV-
RAV-
(kW)
(kW)
SM562CT-E
SM562CT-E
SM562CT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
23.88 – 21.89
Power consumption
Power factor
4.99
Cooling
95
EER
2.81
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
22.44 – 20.57
4.69
Electrical
characteristics
(A)
(kW)
(%)
Heating
Fan
95
COP
3.41
Energy efficiency class ∗
—
Centrifugal fan
13.0 / 11.2 / 10.0
60
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
36 / 33 / 30
51 / 48 / 45
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
12.7
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
6.4
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 16 –
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1-1-5. High WallType
<Twin type>
Indoor unit 1
RAV-
RAV-
RAV-
(kW)
(kW)
SM802KRT-E
SM802KRT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Indoor unit 2
Outdoor unit
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
24.40 – 22.37
Power consumption
Power factor
5.10
Cooling
95
EER
2.75
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
23.83 – 21.84
4.98
Electrical
characteristics
(A)
(kW)
(%)
Heating
Fan
95
COP
3.21
Energy efficiency class ∗
—
Cross flow fan
18.5 / 14.6 / 12.2
30
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
45 / 41 / 36
60 / 56 / 51
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
15.9
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
9.5
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 17 –
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<Triple type>
Indoor unit 1
Indoor unit 2
Indoor unit 3
Outdoor unit
RAV-
RAV-
RAV-
RAV-
(kW)
(kW)
SM562KRT-E
SM562KRT-E
SM562KRT-E
SM1603AT(Z)(ZG)-E
14.0
Model
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
24.40 – 22.37
Power consumption
Power factor
5.10
Cooling
95
EER
2.75
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
23.83 – 21.84
4.98
Electrical
characteristics
(A)
(kW)
(%)
Heating
Fan
95
COP
3.21
Energy efficiency class ∗
—
Cross flow fan
14.0 / 12.5 / 10.7
30
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
39 / 36 / 33
54 / 51 / 48
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
12.7
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
6.4
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 18 –
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1-1-6. Compact 4-way Cassette (600 × 600)Type
<Triple type>
Indoor unit 1
RAV-
RAV-
RAV-
RAV-
(kW)
(kW)
SM562MUT-E
SM562MUT-E
SM562MUT-E
SM1603AT(Z)(ZG)-E
14.0
Indoor unit 2
Model
Indoor unit 3
Outdoor unit
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
Power consumption
Power factor
(A)
(kW)
(%)
23.88 – 21.89
4.99
Cooling
95
2.81
EER
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
Electrical
characteristics
(A)
(kW)
(%)
22.44 – 20.57
4.69
Heating
Fan
95
COP
3.41
Energy efficiency class ∗
—
Turbo fan
13.3 / 11.2 / 9.1
60
Fan unit
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Sound pressure level
Sound power level
H/M/L
H/M/L
(dB•A)
(dB•A)
43 / 39 / 34
58 / 54 / 49
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
(m)
(m)
(m)
(m)
(m)
7.5
5
Min. length
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
12.7
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
6.4
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 19 –
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1-1-7. Slim DuctType
<Triple type>
Indoor unit 1
RAV-
RAV-
RAV-
RAV-
(kW)
(kW)
SM564SDT-E
SM564SDT-E
SM564SDT-E
SM1603AT(Z)(ZG)-E
14.0
Indoor unit 2
Indoor unit 3
Outdoor unit
Model
Cooling capacity
Heating capacity
16.0
Indoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Running current
(A)
(kW)
(%)
23.88 – 21.89
Power consumption
Power factor
4.99
95
Cooling
EER
2.81
Energy efficiency class ∗
Running current
Power consumption
Power factor
—
Electrical
characteristics
(A)
(kW)
(%)
22.44 – 20.57
4.69
Heating
Fan
95
COP
3.41
Energy efficiency class ∗
—
Centrifugal fan
13.0 / 11.3 / 9.7
60
Standard air flow H/M/L
Motor
(m³/min.)
(W)
Fan unit
Standard (at shipment)
(Pa)
10
External
static pressure
Set up for tap exchange
(Pa)
10 / 20 / 35 / 50
45 / 40 / 36
33 / 31 / 28
60 / 55 / 51
48 / 46 / 43
Under air inlet
Back air inlet
Under air inlet
Back air inlet
H/M/L
H/M/L
H/M/L
H/M/L
(dB•A)
(dB•A)
(dB•A)
(dB•A)
Sound
pressure level
Sound
power level
Outdoor unit
Power supply
1 phase 230V (220 – 240V) 50Hz
Standard length
Min. length
(m)
(m)
(m)
(m)
(m)
7.5
5
Refrigerant
pipe
Max. total length
50
Outdoor lower
Outdoor higher
30
Height
difference
30
Fan
Propeller fan
103
Fan unit
Standard air flow volume
Motor
(m³/min.)
(W)
100 + 100
15.9
Main
(mm)
Gas side
Sub
(mm)
12.7
Connecting
pipe
Main
(mm)
9.5
Liquid side
Sub
(mm)
6.4
Sound pressure level
Sound power level
Cooling/Heating
Cooling/Heating
(dB•A)
(dB•A)
51 / 53
68 / 70
∗ : IEC standard
– 20 –
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1-2. Outdoor Unit
Model name
Power supply
RAV-SM1603AT(Z)(ZG)-E
1 phase 230V (220 – 240V) 50Hz
Type
Hermetic compressor
Compressor
Motor
Pole
(kW)
(kg)
3.75
4
Refrigerant charged
Refrigerant control
3.1
Pulse motor valve
Standard length
Min. length
(m)
(m)
(m)
7.5
5
Max. total length
50
Inter
Additional refrigerant charge
under long piping connector
40g/m
(31m to 50m)
connecting pipe
Outdoor lower
Height
(m)
(m)
30
difference
Outdoor higher
30
Height
Width
Depth
(mm)
(mm)
(mm)
1340
Outer dimension
900
320
Appearance
Total weight
Silky shade (Muncel 1Y8.5/0.5)
(kg)
99
Finned tube
Propeller fan
103
Heat exchanger
Fan
Fan unit
Standard air flow
Motor
(m³/h)
(W)
100 + 100
15.9
Gas side
(mm)
(mm)
(dB•A)
(dB•A)
(°C)
Connecting pipe
Liquid side
Cooling/Heating
Cooling/Heating
9.5
Sound pressure level
Sound power level
51 / 53
68 / 70
Outside air temperature, Cooling
Outside air temperature, Heating
43 to –15
15 to –15
(°C)
– 21 –
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1-3. Operation Characteristic Curve
• Operation characteristic curve
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
<Cooling>
<Heating>
25
30
28.2
23.7
28.2
26
24
22
20
18
16
14
12
10
8
22
20
18
16
14
12
10
8
26
24
22
20
18
16
14
12
10
8
6
• Conditions
• Conditions
6
6
Indoor : DB27°C/WB19°C
Outdoor : DB35°C
Air flow : High
Indoor : DB20°C
Outdoor : DB7°C/WB6°C
Air flow : High
Pipe length : 7.5m
230V
4
4
4
Pipe length : 7.5m
230V
2
2
2
0
0
0
20
40
60
79
100
120
0
20
40
60
78.6
100
120
Compressor speed (rps)
Compressor speed (rps)
• Capacity variation ratio according to temperature
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
<Cooling>
<Heating>
105
120
110
100
90
80
70
60
50
40
30
20
10
0
100
95
90
85
80
75
70
65
60
55
50
• Conditions
• Conditions
Indoor : DB20°C
Indoor : DB27°C/WB19°C
Indoor air flow : High
Pipe length : 7.5m
Indoor air flow : High
Pipe length : 7.5m
32 33 34 35 36 37 38 39 40 41 42 43
-14 -12 -10 -8 -6 -4 -2
0
2
4
6
8
10
Outdoor temp. (°C)
Outdoor temp. (°C)
– 22 –
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2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
2-1. Indoor Unit
RAV-SM1403DT-A, RAV-SM1603DT-A
Service work space
704
664
600
(52)
(52)
Check port
400 × 800
Air flow
Air flow
Drain trap
Hung-up plate
12
Plug
(Port for check
and clean)
32
52
Drain pipe
Refrigerant piping (5/8” (Ø15.88))
Refrigerant piping (3/8” (Ø9.52))
Drain port (Outer diameter: Ø32)
Adhesive inhibited
Refrigerant piping (3/8” (Ø9.52))
Refrigerant piping (5/8” (Ø15.88))
(111)
854
(85)
3-M5 hole for drain pump kit
25
25
490
600
48
Electric parts box
Drain port (Outer diameter: Ø32)
Flange (Air outlet side)
Flange (Air inlet side)
10-Ø5 hole
(Include in the other side)
10-Ø5 hole
8-Ø7 hole (Include in the other side)
8-Ø7 hole
20
845 (Inside)
20
25
12
25
12
757 (Inside)
15
25
256
271
256
67.5
250
250
885
250
67.5
807
11 × 65 = 715
11 × 65 = 715
65
65
24-Ø5 hole
(Include in the other side)
24-Ø5 hole
(Include in the other side)
– 23 –
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380
200
60
Drain hole (Ø25)
B legs
Air inlet
port
Name
Note
Mounting bolt hole
(Ø12 × 17 long hole)
Air inlet port
Refrigerant piping hole
Indoor/Outdoor unit
connecting wire inlet hole
——
1
2
12
75
Power supply inlet hole
Ø38 Kockout hole
Air outlet
port
A legs
Mounting bolt hole
(Ø12 × 17 U-shape hole)
383
70
39
96
Details of A legs Details of B legs
320
150
600
Drain hole (Ø28 × 88)
900
52
550
Refrigerant pipe
connecting port
(Ø9.5 flare at liquid side)
Refrigerant pipe
connecting port
(Ø15.9 flare at gas side)
30
2
1
2
1
1
60
68
178
327
178
518
178
80 18
135
18
80
151
12 64
83
7
400
Z
Unit : mm
Knockout for downward piping
Z views
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RBC-TWP30E2, RBC-TWP50E2 (SimultaneousTwin)
Inner diameter Ø C
Inner
diameter Ø D
Inner
diameter Ø D
A
Model (RBC-)
A
B
C
D
Liquid side
Gas side
36
43
34
44
14
23
14
21
Ø9.5
Ø15.9
Ø9.5
Ø15.9
Ø6.4
TWP30E2
TWP50E2
Ø12.7
Ø9.5
Liquid side
Gas side
Ø15.9
– 25 –
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RBC-TRP100E (SimultaneousTriple)
<Gas side>
Header assembly
300
80
Inner diameter
Ø15.9
100
80
<Liquid side>
Branch pipe assembly
100
35
80
80
Inner diameter
Ø9.52
Insulator
Gas side socket
Liquid side socket
Ø15.9
Ø12.7
Ø9.5
Ø6.4
Ø15.9
Ø25.4
Ø9.5
Ø12.7
(External
diameter)
(External
diameter)
(External
diameter)
(External
diameter)
3 pcs.
1 pc.
3 pcs.
1 pc.
– 26 –
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3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM
3-1. Indoor Unit
<Indoor unit to be connected to RAV-SM1403DT-A, RAV-SM1603DT-A>
• Single type (Combination of one indoor unit and one outdoor unit)
Distributor
(Strainer
incorporated)
Indoor unit
TCJ sensor
Air heat
exchanger
TC sensor
Refrigerant pipe
at liquid side ØB
Refrigerant pipe
at gas side ØA
Heating
Cooling
To outdoor unit
To outdoor unit
Dimension table
Capillary tube specifications
Outer diameter of refrigerant pipe
Model
RAV-SM∗∗∗DT
Inner dia. × Length × Q’ty
Indoor unit
Gas side ØA
Liquid side ØB
Ø2 × 200 × 3, Ø2 × 300 × 1
Ø2 × 350 × 2, Ø2 × 400 × 1
SM140, 160 type
SM140, 160 type
15.9
9.5
– 27 –
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<Indoor unit to be connected to RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E>
• Single type
Distributor
(Strainer
incorporated)
Indoor unit
TCJ sensor
(Combination of one indoor unit and
one outdoor unit)
Air heat
exchanger
TC sensor
Refrigerant pipe
at liquid side
Outer diameter Ø9.5
Refrigerant pipe
at gas side
Outer diameter Ø15.9
Heating
Cooling
To outdoor unit
To outdoor unit
• Twin type (Combination of two indoor units and one outdoor unit)
Indoor A unit
Indoor B unit
Distributor
(Strainer
incorporated)
Distributor
(Strainer
incorporated)
TCJ sensor
TCJ sensor
Air heat
exchanger
Air heat
exchanger
TC sensor
TC sensor
Refrigerant pipe
at liquid side
Outer diameter Ø6.4
Refrigerant pipe
Refrigerant pipe
at liquid side
Outer diameter Ø6.4
Refrigerant pipe
at gas side
at gas side
Outer diameter Ø12.7
Outer diameter Ø12.7
Branch pipe
Branch pipe
Refrigerant pipeat liquid side
Outer diameter Ø9.5
Refrigerant pipeat gas side
Outer diameter Ø15.9
Heating
Cooling
To outdoor unit
To outdoor unit
• Triple type (Combination of three indoor units and one outdoor unit)
Indoor A unit
Indoor B unit
Indoor C unit
Distributor
(Strainer
incorporated)
Distributor
(Strainer
incorporated)
Distributor
(Strainer
incorporated)
TCJ sensor
TCJ sensor
TCJ sensor
Air heat
exchanger
Air heat
exchanger
Air heat
exchanger
TC sensor
TC sensor
TC sensor
Refrigerant pipe
Refrigerant pipe
Refrigerant pipe
Refrigerant pipe
Refrigerant pipe
Refrigerant pipe
at liquid side
Outer diameter
Ø6.4
at gas side
Outer diameter
Ø12.7
at liquid side
Outer diameter
Ø6.4
at gas side
Outer diameter
Ø12.7
at liquid side
Outer diameter
Ø6.4
at gas side
Outer diameter
Ø12.7
Distributor
Distributor
Refrigerant
Refrigerant
pipeat liquid side
pipeat gas side
Outer diameter Ø9.5
Outer diameter Ø15.9
Heating
Cooling
To outdoor unit
To outdoor unit
– 28 –
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3-2. Outdoor Unit
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
TO sensor
TS sensor
PMV
Strainer
TE sensor
Check joint
Capillary
Ø4 ×Ø3 (6 pcs.)
Cooling: High pressure
Heating: Low pressure
Heat exchanger
Ø8, 2 rows, 52 stages
FP1.45, flat fin
Distributor
Refrigerant pipe
at liquid side Ø9.5
Packed valve
TD sensor
In cooling operation
In heating operation
Refrigerant pipe
at gas side Ø15.9
Ball valve
Strainer
Muffler
Cooling: Low pressure
Heating: High pressure
Ø25 × L180
Ø25 × L210
Accumulator Rotary compressor
(2500cc) (DA422A3F-25M)
Systematic Diagram of Refrigerating Cycle
* This compressor has 4-pole motor.
The value when compressor frequency (Hz) is measured by a clamp meter becomes 2 times of No. of
compressor revolutions (rps).
Pressure
(MPa) (kg/cm²g) Discharge Suction
Pd Ps
Standard 2.85 0.83 29.1
Pipe surface temperature (°C)
Indoor/Outdoor
temp. conditions
(DB/WB) (°C)
Compressor
Indoor heat Outdoor heat drive revolution Indoor
exchanger
exchanger
frequency
(rps)
fan
Pd
Ps
(TD)
80
(TS)
11
14
5
(TC)
9
(TE)
39
Indoor Outdoor
8.5
65
56
30
62
32
84
HIGH
HIGH
LOW
HIGH
LOW
HIGH
27/19
32/24
18/15.5
20/–
35/–
43/–
Cooling Overload 3.41 1.04 34.8 10.6
84
15
8
49
Low load
2.08 0.54 21.2
5.5
6.7
54
37
–15/–
7/6
Standard 2.82 0.66 28.7
83
3
46
55
38
2
Heating Overload 2.44 1.13 24.9 11.5
Low load 2.32 0.25 23.7 2.5
82
18
–20
15
30/–
24/18
–15/–
88
–16
15/–
– 29 –
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4. WIRING DIAGRAM
4-1. Indoor Unit
RAV-SM1403DT-A, RAV-SM1603DT-A
YEL
BLU
ORN
DP
WHI
DP CN033
8
WHI
CS
CN030
(RED)
Relay
43F3
CN068 (GRN)
(BLU)
Fan
CN083 (WHI)
9
9
7
7
3
3
1
1
1
1
3
3
1
3
5
1
3
1 2 3
8
TA
TCJ
TC
7
H
M
L
UL
1 1
2 2
CN104
(YEL)
RY007
Relay
43F2
1 1
2 2
CN102
(RED)
8
7
RY004
1
3
1 1
(BLK) 2 2
Relay
43F1
CN034 (GRY)
CN101
RY006
RY002
RY001
CN309
(YEL)
7
1
CN080
1
3
2
(GRN)
3
WHI
WHI
WHI
RY005
Outside
error input
(
)
Fuse
(T5A, 250V~)
1
1 1
3 3
5 5
1
2
CN073
(RED)
(EXCT)
CN067
(BLK)
1
2
CN070
(WHI)
(Filter)
Option
P.C. board
(MCC-1403)
Power supply
circuit
1
2
6
5
4
3
2
1
CN066
(WHI)
RED WHI BLK
CN060
(WHI)
1 1
2
3 3
CN041
(BLU)
CN074
(WHI)
CN050
(WHI)
CN075
(WHI)
CN061 CN032
(YEL) (WHI)
1
1
3
3
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4 5 6
1 2
(Fan drive)
BLK
BLK
A B
Color Identification
RED : RED GRY : GRAY
CN51
(RED)
1 2 3 4 5
1 2 3 4 5
CN02
(YEL)
1 2 3 4 5 6
1 2 3 4 5 6
WHI : WHITE
BLK : BLACK
ORN : ORANGE
BRW: BROWN
P.C. board
for TCC-LINK
(MCC-1440)
YEL : YELLOW GRN : GREEN
BLU : BLUE
P.C. board
(MCC-1520)
A B
1 2
1 2
CN40
(BLU)
1 2 3 4 5 6
1 2 3 4 5 6
CN01
(WHI)
1.
indicates the terminal board and
the number indicates the terminal number.
Wired
remote controller
2. The dashed line indicates wiring at the local site.
3. indicates P.C. board.
4. When install Drain Pump. please connect
Float Switch Connector to Connector CN030.
5. When changing external static pressure,
please reconnect Fan Motor connecter (WHI)
to high static pressure connector (RED).
U3 U4
TR
3P Connector (RED)
(At the time of shipment)
Relay terminal
WHI
WHI
RED
Option
RED
WHI
RED
RED
RED
Fuse (T10A, 250V~)
5
3
6
5
6
4
5
6
4
BRW
BRW
BRW
Relay
43F3
Relay
43F2
Relay
43F1
2
3P Connector (RED)
(At the time of twin setting)
4
3
3
YEL
BLK
YEL
BLU
RED WHI
ORN
L
N
BLU
1
1
2
2
3
3
BRW
BLK
Power supply
GRY
Earth
screw
Earth
screw
RC
220–240V~, 50Hz
WHI
(Only use twin setting)
WHI
GRY
(RED)
1
1
3 4 5 6
3 4 5 6 7
9 (WHI)
9 (WHI)
1
3 4 5
7
9
(Normal)
(High satatic pressure)
Closed-end
connector
RED WHI
Serial
signal
For twin setting,
L
N
please reconnect this 3P connector
to the R-S terminal 3P connector.
Symbol
FM
RC
TR
TA
Parts name
Earth
screw
Fan motor
Power supply
220–240V~, 50Hz
FM
Running capacitor
Power transformer
Indoor temp. sensor
Internal wiring part of fan motor
Outdoor unit
YEL
TC, TCJ Indoor heat exchanger sensor
49F
RY002
RY005
RY006
RY007
43F1, 2, 3
Fuse
Overheating protection switch (OFF: 135°C)
Relay for drain pump motor
BLU
ORN
BLK
Relay for fan motor
WHI
GRY
RED
T10A, 250V~
T5A, 250V~ (On P.C. board (MCC-1403))
Optional parts
49F
RC
Fuse
CS
DP
Float switch
Drain pump motor
Overheating protection switch
– 30 –
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• Single type
• Twin type
Power supply 220-240V
Single phase 50Hz
Power supply 220-240V
Single phase 50Hz
Outdoor unit
1 2 3
Outdoor unit
1 2 3
L
L
N
N
1
2
3
Indoor
unit
A B
1
2
3
1
2
3
Indoor unit
No.1 (Master)
A B
Indoor unit
No.2 (Sub)
A B
Earth
screw
A B
Wired remote controller
A B
Wired remote controller
• Triple type
Power supply 220-240V
Single phase 50Hz
Outdoor unit
1 2 3
L
N
1
2
3
1
2
3
1
2
3
Indoor unit
No.1 (Header)
A B
Indoor unit
No.2 (Follower)
A B
Indoor unit
No.3 (Follower)
A B
Earth
screw
Earth
screw
Earth
screw
Earth
screw
Earth
screw
Earth
screw
Earth
screw
A B
Wired remote controller
Notes)
1.
: indicates a terminal block
2. Broken line and chain line indicate wiring at local site.
3. For the inner wiring diagram of the outdoor unit and the indoor unit, refer to the wiring diagram of each model.
4. There is no polarity. It is no problem that the remote controller is connected to the indoor unit terminal block A
and B reversely.
5. When using a wireless remote controller, connection of the remote controller to A and B terminal blocks are
unnecessary. (Wire connection between indoor unit No.1 and No.2 is necessary.)
– 31 –
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4-2. Outdoor Unit
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
CN06
WHI
1 2 3 4 5
CAPA
CN08
WHI
WHI
7 7
T02 CT
YEL BLU
CN20 CN21
RED
WHI
RED
RED
WHI
5 5
3 3
1 1
CN02
CN01
Noise Filter
P.C. Board
MCC-1551
WHI
RED
BLK
IPDU P.C. Board
MCC-1535
CN04
RED
WHI
RED
5 5
1 1
CN09
CN10
CN11
CN01
CN02
CN03
P01
CN13
RED
WHI
BLK
CM
CN04
WHI
CN05
WHI
CN22
BLU
NB NB
NA NA
LB LB
LA LA
1
1
3
3
1 2
1
1 2 3 4 5
1 2 3 4 5
Reactor
TS
TE
TO
TD
CN01
RED
CN04
WHI
CN800 CN03
CN607
RED
WHI
YEL
1
1
5
5
1
1 2 3 4 5
1 2 3 4 5
1
1
3
3
1
1
3
3
1 2
1 2
1 2
1 2
1
1
3
3
3
1 2
1 2 1 2
CN700
YEL
1 1
CN606
CN604
CN600
RY700
1
2
3
4
5
RED CN605 WHI CN601 WHI
WHI
WHI
Fuse, F300
T5A, 250V~
CN804
BLU
20SF
3 3
CN801
WHI
CDB P.C. Board
MCC-1531
CN702
WHI
Fuse,
50A, 250V~
Serial
1 2 3 4 5 6 7 8
communication
circuit
Fan motor drive circuit
1 1
2 2
3 3
4 4
5 5
6 6
CN500
BLU
2 2
1 1
PMV
49C
Fuse, F01
T3, 15A,
250V~
CN301
WHI
CN300 CN303
WHI
CN302
WHI
WHI
1
1
3
3
5
5
1 2 3 1 2 3 4 5
1 2 3 1 2 3 4 5
1 2 3 1 2 3 4 5
1 2 3 1 2 3 4 5
CN02
BLK
FM1
FM2
Fuse,
T10A, 250V~
RED
WHI
Earth screw
Earth screw
L
N
1 2 3
1 2 3
Symbol
CM
Parts name
Compressor
Pulse motor valve
Outdoor unit
Indoor unit
Power supply
220 – 240V~, 50Hz
PMV
Earth screw
FM1, FM2 Fan motor
TE
TD
Heat exchanger Temp. sensor
Discharge Temp. sensor
Outdoor Temp. sensor
Suction Temp. sensor
Compressor case thermostat
4-way valve coil
TO
1.
indicates the terminal block.
Alphanumeric characters in the cycle indicate the terminal No.
2. The two-dot chain line indicates the wiring procured locally.
3. indicates the P.C. board.
TS
49C
20SF
RY
Relay
4. For the indoor unit circuit, refer to the wiring diagram of the indoor unit.
– 32 –
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4-3. Fan Characteristics
Current value as a criterion, adjust the air volume value to become within the range of the chart below.
<RAV-SM1403DT-A>
<RAV-SM1603DT-A>
Static pressure (Pa)
Static pressure (Pa)
Fan-tap
Fan-tap
(unit)
m³/h
l/s
30
40
50
100
200
225
250
(unit)
m³/h
l/s
30
40
50
100
200
225
250
3,480 3,300 2,500 2,330 2,100
3,740 3,500 2,800 2,600 2,300
Hi
966
916
694
647
583
Hi
1,038
62.3
972
777
722
638
CMM
m³/h
l/s
58.0
55.0
41.6
38.8
35.0
CMM
m³/h
l/s
58.3
46.6
43.3
38.3
2,700 2,670 2,500 2,100 1,900
3,000 2,970 2,790 2,260 2,000
Med
Low
750
742
694
583
527
Med
Low
833
825
775
627
555
CMM
m³/h
l/s
45.0
44.5
41.6
35.0
31.6
CMM
m³/h
l/s
50.0
49.5
46.5
37.6
33.3
2,300 2,270 2,250 2,100 1,600
2,600 2,580 2,550 2,380 1,850
638
631
625
583
513
722
717
708
66
513
CMM
38.3
37.8
37.5
35.0
30.8
CMM
43.3
43.0
42.5
39.6
30.8
300
250
200
150
100
50
6
5
4
3
2
1
0
300
250
200
150
100
50
6
5
4
3
2
1
0
High static pressure
High static pressure
Normal
Normal
condition
condition
(ex factory)
(ex factory)
Hi
Hi
Hi
Hi
Med.
Low
Low
Med.
Med.
Low
Med.
Low
2,500
0
0
1,500
2,000
3,000
3,500
4,000
1,500
2,000
2,500
3,000
3,500
4,000
Air volume (m³/h)
Air volume (m³/h)
REQUIREMENT
Install the volume damper in the air outlet, and adjust the airflow to become within the range of the chart above.
n Wire connection change of fan motor
Wiring connection of the fan motor is connected that external static pressure makes to 200P during factory setting.
In cases where external static pressure is required to change by the duct resistor, change the wiring connection.
The fan motor connector is connected to the 9P white color connector during factory setting.
When the fan motor is set to high static pressure, connect to the 9P red color connector such as arrow mark.
In addition, 9P red color connector is bundled along with wirings into the electric parts box.
Red color connector
Red
Red
Red
2
5
3
6
4
5
6
4
5
6
4
Brown
43F3
43F2
43F1
3
3
Brown
RC
White
Gray
White
Gray
7
White color
connector
1
1
3 4 5 6
3 4 5 6 7
9
9
1
1
3 4 5
9
9
White color
connector
3 4 5 6 7
FM
FM
Closed end
connector
In case of normal condition
(Factory setting)
In case of high static pressure
– 33 –
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5. SPECIFICATIONS OF ELECTRICAL PARTS
5-1. Indoor Unit
RAV-SM1403DT-A, RAV-SM1603DT-A
No.
1
Parts name
Fan motor
Type
Specifications
Output (Rated) 600 W
10 kΩ at 25°C
SWF-240-600-4A
2
TA sensor
TC sensor
TCJ sensor
Lead wire length : 1200mm
3
Ø6 size lead wire length : 1200mm Vinyl tube (Black)
Ø6 size lead wire length : 1200mm Vinyl tube (Red)
10 kΩ at 25°C
4
10 kΩ at 25°C
5-2. Outdoor Unit
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
No.
1
Parts name
Type
Specifications
Output (Rated) 100 W
3 phase, 4P, 3500 W
2.75 – 3.15 mH, 27.8 ± 1.9 V
10 kΩ at 25°C
Fan motor
Compressor
Reactor
ICF-280-100-1R
2
DA422A3F-25M
3
CH-65
4
Outdoor temp. sensor (To-sensor)
Heat exchanger sensor (Te-sensor)
Suction temp. sensor (Ts-sensor)
Discharge temp. sensor (Td-sensor)
Fuse (Switching power (Protect))
Fuse (Inverter, input (Current protect))
4-way valve solenoid coil
—
5
—
10 kΩ at 25°C
6
—
10 kΩ at 25°C
7
—
—
50 kΩ at 25°C
8
T3.15 A, AC 250 V
50 A, AC 250 V
9
—
10
11
12
STF-01AJ502EJ
US-622
AC 220 – 240 V
Compressor thermo. (Protection)
Coil (Pulse Motor Valve)
OFF : 125 ± 4°C, ON : 90 ± 5°C
—
UKV-25D100
– 34 –
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6. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal level.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or
refrigerating oil are not entered in the refrigerant
cycle of the air conditioner using the new refrigerant
during installation work or servicing time.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
7. Be sure to carry out installation or removal
according to the installation manual.
The next section describes the precautions for air
conditioner using the new refrigerant.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
Conforming to contents of the next section together
with the general cautions included in this manual,
perform the correct and safe work.
8. Unauthorized modifications to the air conditioner
may be dangerous. If a breakdown occurs
please call a qualified air conditioner technician
or electrician.
Improper repair may result in water leakage,
electric shock and fire, etc.
6-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and
materials exclusive for R410A, it is necessary to
carry out installation/servicing safely while taking
the following precautions into consideration.
6-2. Refrigerant Piping Installation
6-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.
Copper pipes and joints suitable for the refrigerant
must be chosen and installed.
Furthermore, it is necessary to use clean copper
pipes and joints whose interior surfaces are less
affected by contaminants.
If other refrigerant than R410A is mixed,
pressure in the refrigeration cycle becomes
abnormally high, and it may cause personal
injury, etc. by a rupture.
1. Copper Pipes
2. Confirm the used refrigerant name, and use
tools and materials exclusive for the refrigerant
R410A.
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m.
The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air
conditioner using R410A as refrigerant.
Do not use copper pipes having a collapsed,
deformed or discolored portion (especially on
the interior surface).
To prevent mischarging, the diameter of the
service port differs from that of R22.
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
As an air conditioner using R410A incurs pres-
sure higher than when using R22, it is necessary
to choose adequate materials.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
Thicknesses of copper pipes used with R410A
are as shown in Table 6-2-1. Never use copper
pipes thinner than 0.8mm even when it is avail-
able on the market.
4. When installing or removing an air conditioner,
do not allow air or moisture to remain in the
refrigeration cycle.
Otherwise, pressure in the refrigeration cycle
may become abnormally high so that a rupture
or personal injury may be caused.
NOTE:
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
Refer to the “6-6. Instructions for Re-use Piping
of R22 or R407C”.
If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.
– 35 –
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Table 6-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
Nominal diameter
Outer diameter (mm)
R410A
0.80
R22
0.80
0.80
0.80
1.00
1/4
3/8
1/2
5/8
6.4
9.5
0.80
12.7
15.9
0.80
1.00
1. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 6-2-3 to 6-2-5 below.
b) Socket Joints
Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose
diameter is larger than 20 mm. Thicknesses of socket joints are as shown in Table 6-2-2.
Table 6-2-2 Minimum thicknesses of socket joints
Reference outer diameter of
copper pipe jointed (mm)
Minimum joint thickness
(mm)
Nominal diameter
1/4
3/8
1/2
5/8
6.4
9.5
0.50
0.60
0.70
0.80
12.7
15.9
6-2-2. Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil other than lubricating oils used in the installed air conditioner is used,
and that refrigerant does not leak.
When using lubricating oils in the piping processing, use such lubricating oils whose water content has been
removed. When stored, be sure to seal the container with an airtight cap or any other cover.
1. Flare Processing Procedures and Precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.
– 36 –
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c) Insertion of Flare Nut
d) Flare Processing
Make certain that a clamp bar and copper pipe have been cleaned.
By means of the clamp bar, perform the flare processing correctly.
Use either a flare tool for R410A or conventional flare tool.
ØD
A
Flare processing dimensions differ according
to the type of flare tool.
When using a conventional flare tool, be sure
to secure “dimension A” by using a gauge for
size adjustment.
Fig. 6-2-1 Flare processing dimensions
Table 6-2-3 Dimensions related to flare processing for R410A / R22
A (mm)
Outer
diameter
(mm)
Nominal
diameter
Thickness
(mm)
Conventional flare tool
(R410A)
Conventional flare tool
(R22)
Flare tool for
R410A, R22
clutch type
Clutch type Wing nut type Clutch type Wing nut type
1/4
3/8
1/2
5/8
6.4
9.5
0.8
0.8
0.8
1.0
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
1.0 to 1.5
1.0 to 1.5
1.0 to 1.5
1.0 to 1.5
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
2.0 to 2.5
0.5 to 1.0
0.5 to 1.0
0.5 to 1.0
0.5 to 1.0
1.0 to 1.5
1.0 to 1.5
1.5 to 2.0
1.5 to 2.0
12.7
15.9
Table 6-2-4 Flare and flare nut dimensions for R410A
Dimension (mm)
Nominal
diameter
Outer diameter
Thickness
(mm)
Flare nut width
(mm)
(mm)
A
B
C
D
1/4
3/8
1/2
5/8
6.4
9.5
0.8
0.8
0.8
1.0
9.1
9.2
6.5
13
20
23
25
17
22
26
29
13.2
16.6
19.7
13.5
16.0
19.0
9.7
12.7
15.9
12.9
16.0
Table 6-2-5 Flare and flare nut dimensions for R22
Dimension (mm)
Nominal
diameter
Outer diameter
Thickness
(mm)
Flare nut width
(mm)
(mm)
A
B
C
D
1/4
3/8
1/2
5/8
3/4
6.4
9.5
0.8
0.8
0.8
1.0
1.0
9.1
9.2
6.5
13
20
20
23
34
17
22
24
27
36
13.0
16.2
19.4
23.3
13.5
16.0
19.0
24.0
9.7
12.7
15.9
19.0
12.9
16.0
19.2
– 37 –
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D
B
A
C
Fig. 6-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench.
The tightening torque for R410A is the same as that for conventional R22.
Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable.
When choosing the tightening torque, comply with values designated by manufacturers.
Table 6-2-6 shows reference values.
NOTE:
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.
Table 6-2-6 Tightening torque of flare for R410A [Reference values]
Tightening torque of torque
wrenches available on the market
N•m (kgf•m)
Nominal
diameter
Outer diameter
(mm)
Tightening torque
N•m (kgf•m)
1/4
3/8
1/2
5/8
6.4
9.5
14 to 18 (1.4 to 1.8)
33 to 42 (3.3 to 4.2)
50 to 62 (5.0 to 6.2)
63 to 77 (6.3 to 7.7)
16 (1.6), 18 (1.8)
42 (4.2)
12.7
15.9
55 (5.5)
65 (6.5)
– 38 –
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6-3. Tools
6-3-1. RequiredTools
Refer to the “4.Tools” (Page 8)
6-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.
Recover the refrigerant, and check no refrigerant
remains in the equipment.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.
Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.
Connect the charge hose of the vacuum pump
adapter.
Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.
Open fully both packed valves at liquid and gas
sides.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.
(For refrigerant charging, see the figure below.)
1) Never charge refrigerant exceeding the specified amount.
2) If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3) Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.
(INDOOR unit)
(Liquid side)
(OUTDOOR unit)
Opened
Closed
(Gas side)
Refrigerant cylinder
(With siphon pipe)
Check valve
Open/Close valve
for charging
Service port
Electronic balance for refrigerant charging
Fig. 6-4-1 Configuration of refrigerant charging
– 39 –
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1) Be sure to make setting so that liquid can be charged.
2) When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
[ Cylinder with siphon ]
[ Cylinder without siphon ]
Gauge manifold
Gauge manifold
OUTDOOR unit
OUTDOOR unit
c y l i n d e r
a n t i g e r R e f r
Refrigerant
cylinder
Electronic
balance
Electronic
balance
Siphon
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the
composition of the charged refrigerant changes
and the characteristics of the equipment varies.
Fig. 6-4-2
6-5. Brazing of Pipes
6-5-1. Materials for Brazing
1. Silver brazing filler
1) Phosphor bronze brazing filler tends to react
with sulfur and produce a fragile compound
water solution, which may cause a gas
leakage. Therefore, use any other type of
brazing filler at a hot spring resort, etc., and
coat the surface with a paint.
Silver brazing filler is an alloy mainly composed
of silver and copper.
It is used to join iron, copper or copper alloy, and
is relatively expensive though it excels in solder-
ability.
2) When performing brazing again at time of
servicing, use the same type of brazing filler.
2. Phosphor bronze brazing filler
6-5-2. Flux
Phosphor bronze brazing filler is generally used
to join copper or copper alloy.
1. Reason why flux is necessary
• By removing the oxide film and any foreign
matter on the metal surface, it assists the flow
of brazing filler.
3. Low temperature brazing filler
Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead.
• In the brazing process, it prevents the metal
surface from being oxidized.
Since it is weak in adhesive strength, do not use
it for refrigerant pipes.
• By reducing the brazing filler's surface tension,
the brazing filler adheres better to the treated
metal.
– 40 –
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2. Characteristics required for flux
6-5-3. Brazing
• Activated temperature of flux coincides with
the brazing temperature.
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
• Due to a wide effective temperature range, flux
is hard to carbonize.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
flow.
• It is easy to remove slag after brazing.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is
harmless to the human body.
Never use gas other than Nitrogen gas.
1. Brazing method to prevent oxidation
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping
material, and attach a flow-meter to the
cylinder.
3. Types of flux
• Noncorrosive flux
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
Generally, it is a compound of borax and boric
acid.
It is effective in case where the brazing
temperature is higher than 800°C.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
• Activated flux
Most of fluxes generally used for silver brazing
are this type.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.05 m³/Hr or 0.02 MPa
It features an increased oxide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
(0.2kgf/cm²) by means of the reducing valve.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools down
to a certain extent (temperature at which
pipes are touchable with hands).
7) Remove the flux completely after brazing.
4. Piping materials for brazing and used
brazing filler/flux
Piping
material
Used brazing
filler
Used
flux
M
Flow meter
Copper - Copper Phosphor copper Do not use
Copper - Iron
Iron - Iron
Silver
Silver
Paste flux
Vapor flux
Stop valve
Nitrogen gas
cylinder
From Nitrogen cylinder
1) Do not enter flux into the refrigeration cycle.
2) When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Pipe
Nitrogen
gas
Therefore, use a flux which does not contain
chlorine.
Rubber plug
3) When adding water to the flux, use water
which does not contain chlorine
(e.g. distilled water or ion-exchange water).
4) Remove the flux after brazing.
Fig. 6-5-1 Prevention of oxidation during brazing
– 41 –
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6-6. Instructions for Re-use Piping of R22 or R407C
6. Check the oil when the existing air conditioner was
Instruction of Works:
removed after refrigerant had been recovered.
In this case, if the oil is judged as clearly different
compared with normal oil
The existing R22 and R407C piping can be
reused for our digital inverter R410A products
installations.
• The refrigerator oil is copper rust green :
There is possibility that moisture is mixed with the
oil and rust generates inside of the pipe.
NOTE)
Confirmation of existence of scratch or dent of the
former pipes to be applied and also confirmation of
reliability of the pipe strength are conventionally
referred to the local site.
• There is discolored oil, a large quantity of the
remains, or bad smell.
• A large quantity of sparkle remained wear-out
powder is observed in the refrigerator oil.
If the definite conditions can be cleared,
it is possible to update the existing R22 and
R407C pipes to those for R410A models.
7. The air conditioner which compressor was ex-
changed due to a faulty compressor.
When the discolored oil, a large quantity of the
remains, mixture of foreign matter, or a large
quantity of sparkle remained wear-out powder is
observed, the cause of trouble will occur.
6-6-1. Basic Conditions Needed to Reuse the
Existing Pipe
Check and observe three conditions of the refrigerant
piping works.
8. Installation and removal of the air conditioner are
repeated with temporary installation by lease and
etc.
1. Dry
(There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There is no refrigerant leak.)
9. In case that type of the refrigerator oil of the
existing air conditioner is other than the following oil
(Mineral oil), Suniso, Freol-S, MS (Synthetic oil),
alkyl benzene (HAB, Barrel-freeze), ester series,
PVE only of ether series.
6-6-2. Restricted Items to Use the Existing Pipes
In the following cases, the existing pipes cannot be
reused as they are. Clean the existing pipes or
exchange them with new pipes.
• Winding-insulation of the compressor may
become inferior.
1. When a scratch or dent is heavy, be sure to use the
new pipes for the works.
NOTE)
The above descriptions are results of confirmation by
our company and they are views on our air
conditioners, but they do not guarantee the use of the
existing pipes of the air conditioner that adopted
R410A in other companies.
2. When the thickness of the existing pipe is thinner
than the specified “Pipe diameter and thickness” be
sure to use the new pipes for the works.
• The operating pressure of R410A is high
(1.6 times of R22 and R407C). If there is a scratch
or dent on the pipe or thinner pipe is used, the
pressure strength is poor and may cause break-
age of the pipe at the worst.
6-6-3. Branching Pipe for Simultaneous
Operation System
• In the concurrent twin, triple systems, when TOSHIBA-
specified branching pipe is used, it can be reused.
∗ Pipe diameter and thickness (mm)
Branching pipe model name:
Pipe outer diameter Ø6.4 Ø9.5 Ø12.7 Ø15.9 Ø19.0
RBC-TWP30E-2, RBC-TWP50E-2, RBC-TRP100E
On the existing air conditioner for simultaneous
operation system (twin, triple systems), there is a
case of using branch pipe that has insufficient
compressive strength.
R410A
0.8
0.8
0.8
1.0
1.0
Thickness
R22
(R407C)
In this case please change it to the branch pipe for
R410A.
• In case that the pipe diameter is Ø12.7 mm or less
and the thickness is less than 0.7 mm, be sure to use
the new pipes for works.
6-6-4. Curing of Pipes
When removing and opening the indoor unit or outdoor
unit for a long time, cure the pipes as follows:
3. The pipes are left as coming out or gas leaks.
(Poor refrigerant)
• There is possibility that rain water or air including
moisture enters in the pipe.
• Otherwise rust may generate when moisture or
foreign matter due to dewing enters in the pipes.
4. Refrigerant recovery is impossible.
(Refrigerant recovery by the pump-down operation
on the existing air conditioner)
• The rust cannot be removed by cleaning, and a new
piping work is necessary.
• There is possibility that a large quantity of poor
oil or moisture remains inside of the pipe.
Place position
Outdoors
Term
Curing manner
1 month or more
Less than 1 month
Every time
Pinching
5. A dryer on the market is attached to the existing
pipes.
Pinching or taping
• There is possibility that copper green rust
generated.
Indoors
– 42 –
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6-6-5. Final Installation Checks
Is there no scratch or dent on the existing pipes?
Existing pipe: NO * Use a new pipes.
NO
Is it possible to operate the existing air conditioner?
YES
∗ After the existing air conditioner operated in cooling mode
for approx. 30 minutes or longer*, recover the refrigerant.
∗ For cooling the pipes and recovering of oil
• Refrigerant recovery: Pump down method
Nitrogen gas pressure 0.5 Mpa
∗ Remove the existing air conditioner from the piping and
carry out flashing (nitrogen pressure 0.5 Mpa) to remove
the remains inside of the pipe.
Note] In case of twin, also be sure to flash the
branching pipe.
(If there is discharge of remains,
it is judged that there is a large quantity of remains.)
Was not largely discolored oil or
a large quantity of remains discharged?
(When the oil deteriorates, the color of the
oil changes to muddy and black color.)
NO
Clean the pipes or use the new pipes.
If you are in trouble of
pipe cleaning, please contact us.
YES
ꢀ Connect the indoor/outdoor units to the existing pipe.
• Use a flare nut attached to the main unit for the
indoor/outdoor units.
(Do not use the flare nut of the existing pipe.)
• Re-machine the flare machining size to size for R410A.
Piping necessary to change the flare nut/
machining size due to pipe compression.
ꢀ In case that the gas pipe Ø19 mm is used for the
outdoor unit of SM803 (3 HP) or higher:
(Gas pipe size of our R410A model 3 to 6 HP is Ø15.9 mm)
1) Flare nut width: H
(mm)
Ø12.7 Ø15.9 Ø19.0
→ Turn the existing pipe switch on the cycle control
Copper pipe
outer dia.
Ø6.4
Ø9.5
P.C board of the outdoor unit to ON side.
At shipment from factory OFF → ON for existing pipe
(Refer to the table below.) (Be sure to set the contents
in the table below in order to restrict the refrigerating
cycle pressure of the equipment in the pipe standard.)
17
22
26
24
29
27
36
For R410A
H
Same
For R22
Same as above
as above
Existing pipe SW
Switch
2) Flare machining size: A
(mm)
Copper pipe
outer dia.
Ø6.4
Ø9.5
13.2
13.0
Ø12.7 Ø15.9 Ø19.0
4, 5 HP
6 HP
Bit 3 of SW802 → ON
Bit 5 of SW801 → ON
A
9.1
9.0
16.6
16.2
19.7
19.4
24.0
23.3
For R410A
For R22
Becomes large a little for R410A
Do not apply the refrigerator oil to the flare surface.
∗ (Airtight test), Vacuum dry, Refrigerant charge,
Gas leak check
Trial run
– 43 –
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6-6-6. Handling of Existing Pipe
When using the existing pipe, carefully check it for the following:
• Wall thickness (within the specified range)
• Scratches and dents
• Water, oil, dirt, or dust in the pipe
• Flare looseness and leakage from welds
• Deterioration of copper pipe and heat insulator
Cautions for using existing pipe
• Do not reuse the flare to prevent gas leak.
Replace it with the supplied flare nut and then process it to a flare.
• Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean.
If discolored oil or much residue is discharged, wash the pipe.
• Check welds, if any, on the pipe for gas leak.
When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.
• The pipe has been open (disconnected from indoor unit or outdoor unit) for a long period.
• The pipe has been connected to an outdoor unit that does not use refrigerant R22, R410A or R407C.
• The existing pipe must have a wall thickness equal to or larger than the following thickness.
Reference outside diameter
(mm)
Wall thickness
(mm)
Ø9.5
Ø15.9
Ø19.1
0.8
1.0
1.0
• Never use any pipe with a wall thickness less than
these thicknesses due to insufficient pressure capacity.
RAV-SP1404AT-E, RAV-SP1404ATZ-E, RAV-SP1404ATZG-E
• To use an existing Ø19.1 mm pipe, set bit 3 of
SW802 (switch for existing pipe) on the P.C. board of
the outdoor unit to ON.
SW802
When shipped from factory When using existing pipe
In this case, the heating performance may be
reduced depending on the outside air temperature
and room temperature.
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
• To use an existing Ø19.1 mm pipe, set bit 5 of
SW801 (switch for existing pipe) on the P.C. board of
the outdoor unit to ON.
SW801 No.5
ON
1 2 3 4 5 6
ON
In this case, the heating performance may be
reduced depending on the outside air temperature
and room temperature.
1 2 3 4 5 6
– 44 –
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6-6-7. Recovery Method of Refrigerant
RAV-SP1404AT(Z)(ZG)-E
RAV-SM1603AT(Z)(ZG)-E
• Use the refrigerant recovery switch SW801 on the
P.C. board of the outdoor unit to recover refriger-
ant when the indoor unit or outdoor unit is moved.
• Use the refrigerant recovery switch SW802 on the
P.C. board of the outdoor unit to recover refriger-
ant when the indoor unit or outdoor unit is moved.
Procedure
Procedure
1. Turn on the power of the air conditioner.
1. Turn on the power of the air conditioner.
2. Select the FAN mode for indoor unit operation
with the remote controller.
2. Select the FAN mode for indoor unit operation
with the remote controller.
3. Set SW804 on the P.C. board of the outdoor unit
to all OFF, and then push SW801 for one second
or more.
3. Press the refrigerant recovery switch SW802 on
the P.C. board of the outdoor unit to drive the air
conditioner into the forced cooling mode for up to
10 minutes.
The air conditioner enters the forced cooling
mode for up to 10 minutes.
Open the valve to start refrigerant recovery.
Operation or handling the valve to recover
refrigerant during this time period.
4. Upon completion of refrigerant recovery, close
the valve and press SW802 for at least one
second to stop operation.
4. Upon completion of refrigerant recovery, close
the valve and push SW801 for at least one
second to stop operation.
5. Turn off the power.
5. Turn off the power.
Outdoor unit P.C. board
P.C. board
Refrigerant recovery
switch SW801
SW802 for
refrigerant recovery
Optional connector
CN610
SW801 for
existing pipes
Special operation
select switch SW804
Existing pipe switch
SW802
DANGER
Take care for an electric shock because the P.C.board is electrified.
– 45 –
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6-7. Tolerance of Pipe Length and Pipe Head
n Twin system
Total length (L + a or L + b)
50 m
15 m
Pipe length
(one way)
Branch pipe length (a, b)
Maximum difference between indoor units
(b – a, or a - b)
10 m
Refrigerant pipe
specification
Between indoor units ( ∆ h)
0.5 m
30 m
Height
difference
Between indoor unit
When outdoor unit heigher (H)
and outdoor unit
When outdoor unit lower
(H)
30 m
Number of bent portions
10 m or less
Indoor unit A
Indoor unit B
∆h
Distributor
a
b
Branch pipe
Branch pipe
H
L
Main pipe
Outdoor unit
CAUTION
When planning a layout for Units A and B, comply with the following:
1. The lengths after branching (“a” and “b”) should be equal if feasible.
Install Units A and B so that the difference of the branching lengths becomes less than 10m if the lengths
cannot be equal due to the branch pipe position.
2. Install Units A and B on the same level.
If Units A and B cannot be installed on the same level, the difference in level should be limited to 0.5m or less.
3. Be certain to install Units A and B in the same room.
Units A and B cannot be operated independently each other.
– 46 –
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n Triple system
Total length (L + a, L +b, L+c)
Branch pipe length (a, b, c)
50 m
15 m
Pipe length
(one way)
Maximum difference between indoor units
(|a – b|, |b – c|, |c – d|)
10 m
Refrigerant pipe
specification
Between indoor units ( ∆ h)
0.5 m
30 m
Height
difference
Between indoor unit
When outdoor unit heigher (H)
and outdoor unit
When outdoor unit lower
(H)
30 m
Number of bent portions
10 m or less
Indoor unit A
Indoor unit C
Indoor unit B
∆ h
Branch pipe
Branch pipe
b
Branch pipe
a
c
H
Distributor
L
Main pipe
Outdoor unit
CAUTION
When planning a layout for Units A, B and C, comply with the following:
1. The lengths after branching (“a” and “b”, “b” and “c”, “a” and “c”) should be equal if feasible.
Install Units A, B and C so that the difference of the branching lengths becomes less than 10m if the
lengths cannot be equal due to the branch pipe position.
2. Install Units A, B and C on the same level.
If Units A, B and C cannot be installed on the same level, the difference in level should be limited to 0.5 m
or less.
3. Be certain to install Units A and B and C in the same room.
Units A, B and C cannot be operated independently each other.
– 47 –
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6-8. Additional Refrigerant Amount
n Twin system
<Formula for Calculating Additional Refrigerant Amount>
Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of
calculations by the following formula and operate the air conditioner as it is.
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg)
+ Branch piping additional refrigerant amount (kg)
= α × (L – 18) + γ × (a + b – 4)
α
γ
L
: Additional refrigerant amount per meter of actual main piping length (kg)
: Additional refrigerant amount per meter of actual branch piping length (kg)
: Actual length of main piping (m)
a, b : Actual length of branch piping (m)
Standard piping length
Main piping Branch piping
18 m 2 m
Connecting pipe diameter
Additional refrigerant amount per Meter (kg/m)
L
a
b
α
β
γ
Ø9.5
Ø6.4
Ø6.4
0.040
—
0.020
Indoor unit A
Indoor unit B
∆h
Distributor
b
a
Branch pipe
Branch pipe
H
L
Main pipe
Outdoor unit
CAUTION
1. Be certain to wire the additional refrigerant amount, pipe length (actual length), head and other
specification on the nameplate put on the outdoor unit for recording.
2. Seal the correct amount of additional refrigerant in the system.
– 48 –
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n Triple system
<Formula for Calculating Additional Refrigerant Amount>
Do not remove the refrigerant even if the additional refrigerant amount becomes minus result as a result of
calculations by the following formula and operate the air conditioner as it is.
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg)
+ Branch piping additional refrigerant amount (kg)
= {α × (L – 28)} + {γ × (a + b + c – 6)}
α
γ
L
: Additional refrigerant amount per meter of actual main piping length (kg)
: Additional refrigerant amount per meter of actual branch piping length (kg)
: Actual length of main piping (m)
a, b, c : Actual length of branch piping (m)
Connecting pipe diameter
Additional refrigerant amount per Meter (kg/m)
L
a
b
c
α
β
γ
Ø9.5
Ø6.4
Ø6.4
Ø6.4
0.04
—
0.02
Indoor unit A
Indoor unit C
Indoor unit B
∆ h
Branch pipe
Branch pipe
b
Branch pipe
a
c
H
Distributor
L
Main pipe
Outdoor unit
CAUTION
1. Be certain to wire the additional refrigerant amount, pipe length (actual length), head and other
specification on the nameplate put on the outdoor unit for recording.
2. Seal the correct amount of additional refrigerant in the system.
– 49 –
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6-9. Piping Materials and Sizes
n Twin system
Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40mg/10m or less in the amount of
oil stuck on inner walls of pipe and 0.8mm in pipe wall thickness for diameters for diameters 6.4, 9.5 and12.7mm
and 1.0mm, for diameter 15.9mm. Never use pipes of thin wall thickness such as 0.7mm.
In parentheres ( ) are wall thickness
Main pipe
Branch pipe
Main pipe
Ø15.9 (1.0)
Ø12.7 (0.8)
Ø9.5 (0.8)
Ø6.4 (0.8)
Gas side
Pipe side
Liquid side
Branch pipe
n Triple system
Use copper tube of Copper and copper alloy seamless pipes and tubes, with 40 mg/10 m or less in the
amount of oil stuck on inner walls of pipe and 0.8 mm in pipe wall thickness for diameters 6.4, 9.5 and
12.7 mm and 1.0 mm, for diameter 15.9 mm. Never use pipes of thin wall thickness such as 0.7 mm.
<Between outdoor unit and distributor>
[Unit: mm]
Outdoor unit
Gas side
Ø15.9 (1.0)
Ø9.5 (0.8)
Main pipe
Liquid side
∗ ( ): Pipe wall thickness
<Between distributor and indoor unit>
[Unit: mm]
Indoor unit
SM56 type
Ø12.7 (0.8)
Ø6.4 (0.8)
Gas side
Branch pipe
Liquid side
∗ ( ): Pipe wall thickness
– 50 –
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6-10. Branch Pipe
n Twin system
Now the refrigerant pipe is installed using branch pipes supplied as accessories.
• Bend and adjust the refrigerant piping so that the branch pipes and pipe after branching become horizontal.
• Fix the branch pipes onto a wall in a ceiling or onto a column.
• Provide a straight pipe longer than 500mm in length as the main piping of the branches.
OK
OK
Horizontal
Horizontal
NO GOOG
NO GOOG
Inclination
Inclination
6-11. Distributor
n Triple system
Now the refrigerant pipe is installed using distributor supplied as accessories.
• Bend and adjust the refrigerant piping so that the distributor and pipe after branching become horizontal.
• Fix the distributor onto a wall in a ceiling or onto a column.
• Provide a straight pipe longer than 500 mm in length as the main piping of the branches.
<How to install distributor>
Branch pipes are horizontal
and collective pipes are vertical
Branch pipes are horizontal
and collective pipes are vertical
Branch pipes and
collective pipes are horizontal
Branch pipes and
collective pipes are horizontal
Branch pipe
Collective pipe
Branch pipe
Collective pipe
<Gas pipe side>
<Liquid pipe side>
<Restrictions in length of the straight area of the branch pipe (main pipe side)>
Provide a straight area of 500 mm or more on the main pipe side of the branch pipe
(for both gas pipe and liquid pipe sides).
NO GOOG
Tilt
Be sure to install the pipes
500 mm or more
500 mm or more
horizontally after branching.
n Air Purging
For the complete information, read the installation manual for outdoor units of air conditioner.
– 51 –
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7. INDOOR CONTROL CIRCUIT
7-1. Indoor Controller Block Diagram
RAV-SM1403DT-A, RAV-SM1603DT-A
7-1-1. Connection of Main (Sub) Remote Controller
Main (Sub) Master remote controller
Weekly timer
(Max. 2 units)
Display part
LCD
Function
setup
Display part
LCD
Driver
LCD
CPU
Display part
LED
Key switch
Function
setup
CN1
CN2
CPU
Power supply
circuit
Key switch
DC5V
Remote controller
communication
circuit
*3
Power supply
circuit
Secondary
battery
DC5V
Indoor unit
#1
A
B
#2
A
#3
A
Network adapter (Option)
B
B
Indoor control
P.C. board
Network adapter
P.C. board
(MCC-1401)
(MCC-1403)
Remote controller
communication
circuit
Remote controller
communication
circuit
DC20V
X
Y
AI net
communication
circuit
EEPROM
TA sensor
TC sensor
TCJ sensor
Float input
CPU
H8/3687
DC5V
DC5V
DC12V
Power supply
circuit
Power supply
circuit
Same as
left ∗2
Same as
left ∗2
Switch
set
CPU
H8/3039
Transformer
Driver
Drain
pump
Serial send/
receive circuit
Central control
remote controller
(Option)
AC synchronous
signal input circuit
Outside
output
1
2
3
1
2
3
START
ALARM
READY
Indoor
fan motor
Fan motor
relay circuit
THERMO ON
COOL
HEAT
FAN
1
1
2
2
3
3
Transformer
Outdoor
unit
Outdoor
unit
Outdoor unit
Max. 8 units are connectable. ∗1
∗1 However when mounting a network adapter while 2 main (sub) remote controllers are connected, Max. 7 units
are connectable.
∗2 A network adapter is mounted to only 1 unit.
∗3 Connection of weekly timer to the sub remote controller is unavailable.
– 52 –
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7-2. Control Specifications
No.
Item
Outline of specifications
1) Distinction of outdoor unit
Remarks
1
When power
supply is reset
When the power supply is reset, the outdoors are distinguished
and the control is selected according to the distinguished result.
2
Operation
mode selection
1) Based on the operation mode selecting command from the
remote controller, the operation mode is selected.
Remote controller
command
Control outline
STOP
FAN
Air conditioner stops.
Fan operation
COOL
HEAT
AUTO
Cooling operation
Heating operation
Ta: Room temp.
Ts: Setup temp.
To: Outside temp.
• COOL/HEAT operation mode is
automatically selected by Ta, Ts and
To for operation.
• The operation is performed as shown
in the following figure according to Ta
value at the first time only.
(In the range of Ts + α –1 < Ta < Ts + α
+ 1, Cooling thermo. OFF (Fan)/Setup
air volume operation continues.)
Cooling
operation
+1.0
Ta
Cooling thermo. OFF (Fan)
• Setup air volume
Ts + α
(˚C)
-1.0
Heating
operation
• α is corrected according to the outside temperature.
Outside temp.
No To
Correction value (a)
k = deg
0K
–1K
0K
To ³ 24°C
24 > To ³ 18°C
To < 18°C
To error
+1K
0K
– 53 –
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No.
Item
Outline of specifications
Remarks
3
Room temp.
control
1) Adjustment range: Remote controller setup temperature (°C)
COOL
18 to 29
18 to 30
HEAT
AUTO
18 to 29
17 to 27
Wired type
18 to 29
16 to 30
Wireless type
2) Using the Item code 06, the setup temperature in heating
operation can be corrected.
Shift of suction tempera-
ture in heating operation
Setup data
0
2
4
6
Setup temp. correction
+0°C
+2°C
+4°C
+6°C
Setting at shipment
Setup data
2
4
Automatic
capacity control
1) Based on the difference between Ta and Ts, the operation
frequency is instructed to the outdoor unit.
(GA control)
2) Cooling operation
Every 90 seconds, the room temperature difference
between temperature detected by Ta and Ts and the
varied room temperature value are calculated to obtain
the correction value of the frequency command and then
the present frequency command is corrected.
Ta (n) – Ts (n) : Room temp. difference
n
: Counts of detection
Ta (n-1) – Ts (n) : Varied room temp. value
n – 1 Counts of detection of 90 seconds before
3) Heating operation
:
Every 1 minute (60 sec.), the room temperature differ-
ence between temperature detected by Ta and Ts and the
varied room temperature value are calculated to obtain
the correction value of the frequency command and then
the present frequency command is corrected.
Ts (n) – Ta (n)
n
: Room temp. difference
: Counts of detection
Ta (n) – Ta (n – 1): Varied room temp. value
n – 1
: Counts of detection of 1 minute before
5
Automatic
cooling/
heating control
1) The judgment of selecting COOL/HEAT is carried out as
shown below. When +1.5 exceeds against Tsh 10 minutes
and after thermo.-OFF, heating operation (Thermo. OFF)
exchanges to cooling operation. Description in the
Tsc: Setup temp. in
cooling operation
Tsh: Setup temp. in
heating operation
+ temp. correction of
room temp. control
parentheses shows an example of cooling ON/OFF.
Ta
(˚C)
Cooling
+1.5
(Cooling ON)
Tsc
or
Tsh
(Cooling OFF)
-1.5
Heating
When –1.5 lowers against Tsc 10 minutes and after thermo. OFF, cooling operation
(Thermo. OFF) exchanges to heating operation.
2) For the automatic capacity control after judgment of cooling/heating, see Item 4.
3) For temperature correction of room temp. control in automatic heating, see Item 3.
– 54 –
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No.
Item
Outline of specifications
Remarks
6
Air speed selection 1) Operation [HH], [L] or [AUTO] is performed by command
from the remote controller.
2) The air speed is varied with difference between Ta and
Ts while the air speed is set to [AUTO].
HH > L > UL
<COOL>
Ta (˚C)
Cooling in
Normal
Cooling/Heating
cooling
[AUTO]
HH
(High wind)
HH
(High wind)
+1.5
+1.0
+0.5
Tsc
HH
HH
(High wind)
(High wind)
HH
(High wind)
HH
(High wind)
L
HH
(High wind)
(Low wind)
L
L
(Low wind)
–0.5
<HEAT>
Ta (˚C)
Cooling in
Cooling/Heating
[AUTO]
Normal
heating
UL (Ultra low wind) only
during compressor-OFF
+0.5
Tsc
L
L
(Low wind)
(Low wind)
HH
(High wind)
L
–0.5
–1.0
–1.5
HH
HH
(High wind)
(High wind)
HH
(High wind)
HH
(High wind)
HH
(High wind)
HH
(High wind)
3) If thermostat is turned off during heating operation, the
mode changes to [UL] or [STOP].
STOP operation is the
cooling air discharge
preventive control by Tc.
4) If Ta ≥ 25°C when the heating operation has started or
when defrost operation has been cleared, the air
conditioner operates with [L] mode or higher mode for
1 minute after Tc entered in A zone of the cooling air
discharge preventive control (Item 7).
Tc: Indoor heat
exchanger sensor
temperature
5) In automatic cooling/heating operation, the mode enters Display: [AUTO]
in [AUTO].
7
Cool air discharge
preventive control
1) In heating operation, the indoor fan is controlled based
on the detected temperature of Tc sensor or Tcj sensor.
As shown below, the upper limit of the revolution
frequency is restricted.
In D zone, the priority is
given to air speed
selection setup of
remote controller.
However B zone is assumed as C zone for 6 minutes and
after when the compressor activated.
In A and B zones while
thermo is ON,
[PRE-HEAT
(Heating ready)] is
displayed.
In defrost operation, the control value of Tc is shifted by
6°C.
Tc
(°C)
Tcj
32
HH
30
L
28
D zone
LL
26
OFF
C zone
B zone
A zone
20
16
– 55 –
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No.
Item
Outline of specifications
Remarks
8
Freeze preventive control 1) The cooling operation (including Dry operation) is
Tcj:
(Low temperature release)
performed as follows based on the detected
temperature of Tc sensor or Tcj sensor.
Indoor heat exchanger
sensor temperature
When [J] zone is detected for 6 minutes
(Following figure), the commanded frequency is
decreased from the real operation frequency.
After then the commanded frequency changes
every 30 seconds while operation is performed in
[J] zone.
In [K] zone, time counting is interrupted and the
operation is held.
When [ I ] zone is detected, the timer is cleared
and the operation returns to the normal operation.
If the commanded frequency becomes S0
because the operation continues in [J] zone, the
return temperature A is raised from 5°C to 12°C
until [ I ] zone is detected and the indoor fan
operates with [L] mode.
(˚C)
A
5
I
K
2
J
In heating operation, the freeze-preventive control
works if 4-way valve is not exchanged and the
following conditions are satisfied.
(However the temperature for J zone dashing
control is changed from 2°C to –5°C.)
Tcn:
Tc temperature when 5
minutes elapsed after
activation
Tc (n – 1):
<Conditions>
Tc temperature at start
time
• When
or
is established 5 minutes after
‚
activation.
Tcn ≤ Tc (n – 1) – 5
Tcn < Tc (n – 1) – 1 and Tcn ≤ Ta < 5°C
‚
– 56 –
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No.
Item
Outline of specifications
Remarks
9
High-temp.
release control
1) The heating operation is performed as follows based on the
detected temperature of Tc sensor or Tcj sensor.
• When [M] zone is detected, the commanded frequency is
decreased from the real operation frequency. After then
the commanded frequency changes every 30 seconds
while operation is performed in [M] zone.
However this control is
ignored in case of the
follower unit of the twin.
• In [N] zone, the commanded frequency is held.
• When [L] zone is detected, the commanded frequency is
returned to the original value by approx. 6Hz every
60 seconds.
Tc(˚C)
Setup at shipment
Control temp. (°C)
M
N
Tcj
A
B
A
B
56 (54)
52 (52)
L
NOTE:
Same status as that
when “thermostat-OFF”
(status that the air
When the operation has started or when Tc or Tcj < 30°C at
start of the operation or after operation start, temperature is
controlled between values in parentheses of A and B.
conditioner enters in the
room temp. monitor
mode when the
temperature reached
the setup temperature
on the remote controller)
10 Drain pump
control
1) In cooling operation, the drain pump is usually operated.
2) If the float switch works while drain pump drives, the
compressor stops, the drain pump continues the operation,
and a check code is output.
Check code [P10]
(Sold separately)
3) If the float switch works while drain pump stops, the
compressor stops and the drain pump operates. If the float
switch keeps operating for approx. 4 minutes, a check code
is output.
11 After-heat
elimination
When heating operation stops, in some cases, the indoor fan
operates with (L) for approx. 30 seconds.
12 Frequency fixed
operation
<In case of wired remote controller>
1) When pushing [CHK] button for 4 seconds or more, [TEST]
is displayed on the display screen and the mode enters in
Test run mode.
(Test run)
2) Push [ON/OFF] button.
3) Using [MODE] button, set the mode to [COOL] or [HEAT].
• Do not use other mode than [COOL]/[HEAT] mode.
• During test run operation, the temperature cannot be
adjusted.
• An error is detected as usual.
• A frequency fixed operation is performed.
4) After the test run, push [ON/OFF] button to stop the operation.
(Display in the display part is same as the procedure in Item 1.)
5) Push [CHK] button to clear the test run mode.
([TEST] display in the display part disappears and the
status returns to the normal stop status.)
– 57 –
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No.
Item
Outline of specifications
Remarks
13 Filter sign display
(Except wireless type)
1) The operation time of the indoor fan is calculated,
the filter reset signal is sent to the remote
controller when the specified time (2500H) has
passed, and it is displayed on LCD.
[FILTER
] goes on.
Specified time: 2500H
∗ It is provided on the
separately sold type
TCB-AX21E2.
2) When the filter reset signal has been received from
the remote controller, time of the calculation timer
is cleared.
In this case, the measurement time is reset if the
specified time has passed, and display on LCD
disappears.
14 Central control mode 1) Setting at the centerl controller side enables to
selection
select the contents which can be operated on the
remote controller at indoor unit side.
2) Setup contents
• 64 line central controller (TCB-SC642TLE2)
Display at remote control-
ler side
(No display)
[Individual]: Operated on the remote controller
(Priority to second pushing)
[Central 1]: ON/OFF operation cannot be oper-
ated on the remote controller.
[Central
] goes on
] goes on
[Central 2]: ON/OFF, mode selection, temp. setup [Central
operations cannot be operated on the
remote controller.
[Central 3]: Mode selection and temp. setup
operations cannot be operated on the
remote controller.
[Central
] goes on
] goes on
[Central 4]: Mode selection cannot be operated
on the remote controller.
[Central
∗ In case of the wireless type, the display lamp
does not change but the contents are same.
If operating an item which is prohibited by the
central control mode from the remote controller, it
is notified with the receive sound, Pi, Pi, Pi, Pi, Pi
(5 times).
SAVE
15 Save operation
1) Turn on
2) During operation of save operation,
the wired remote controller.
button on the remote controller.
Operation and display also
are unavailable on the wired
remote controller
SAVE
lights on
RBC-AMT31E and before.
3) During save operation, the current release control
is performed with the restriction ratio set in
EEPROM on the outdoor unit.
Carry out setting operation
during stop of the unit;
otherwise the unit stops
operation.
SAVE
4) The restriction ratio can be set by keeping
button pushed for 4 seconds or more on the
remote controller.
For the setup operation,
refer to “How to set up
contents of save operation”
of Installation Manual.
5) When validating the save operation, the next
operation starts with save operation valid because
contents are held even when operation stops,
operation mode changes or power supply is reset.
The setting of the save
operation differs according
to combination of the
outdoor units to be
connected.
6) The restriction ratio can be set by changing the
setup data of Item code (DN) [C2] in the range of
50 to 100% (every 1%, Setting at shipment: 75%).
(Although the setting value
of the remote controller
varies on the display, the
real operation of the air
conditioner itself is
“Fixed with 75%”.)
– 58 –
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7-3. Optional Connector Specifications of Indoor P.C. Board
Connector
No.
Pin
No.
Function
Specifications
Remarks
Setting at shipment: Interlock of ON by indoor unit operation, with OFF
by stop operation
1
2
1
2
DC12V
Ventilation output
CN32
Output
(Open collector)
∗ The single operation setting by FAN button on the remote controller
is performed on the remote controller (DN [31] = 0000 → 0001)
DC12V
Defrost output
(Open collector)
ON when outdoor unit is defrosted
Thermostat ON output
(Open collector)
3
4
5
6
ON when real thermostat is on. (Compressor ON)
Option output
CN60
Cooling output
(Open collector)
ON when operation mode is cooling system
(COOL, DRY, Cooling/Heating automatic cooling)
Heating output
(Open collector)
ON when operation mode is heating system
(HEAT, Cooling/Heating automatic heating)
Fan output
(Open collector)
ON when indoor fan is on. (When air cleaner is used)
OFF while clean operation is performed.
1
2
3
1
2
DC12V
NC
Outside error
input
Generate the warning code “L30” (continuously for 1 minute) and
stop the operation forcibly.
CN80
Outside error input
DC12V
Panel operation input
The grille is controlled according to up/down operation from the
remote controller.
Panel up output
(Open collector)
AUTO up/
down grille (∗)
3
CN20
∗ Setting of automatic up/down grille provided is performed on the
remote controller. (DN [30] = 0000 → 0001)
Panel down output
(Open collector)
4
5
0V
A
Selection of option error input (Protective operation display of device
attached to outside) or
Humidifier setting input (Vaporizing + Drain pump ON)
Humidifier is set at shipment from factory.
1
2
FILTER
Option error /
Humidifier setting (∗)
CN70
∗ Setting of option error input is performed on the remote controller.
(DN [2A] = 0002 → 0001)
0V
0V
1
2
1
2
1
2
This check is used to check indoor operation.
(Performs operation of indoor fan “H”, Louver horizontal and Drain
pump ON without communication with outdoor and remote controller)
CHK
Operation check
CN71
CN72
CN73
0V
DISP
Exhibition mode
Communication is available by indoor unit and remote controller only.
Indoor unit forced thermostat OFF operation
Demand input
EXCT
Demand
0V
∗ This option is not provided to oversea models.
– 59 –
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Power transformer (Secondary side)
(AC11V, 14V, 20V)
Indoor/Outdoor communication (Spare)
Power supply
PMV output
EEPROM
Indoor/Outdoor communication
(Also used for communication of
the central control system)
Microcomputer
operation LED
Power transformer
(Primary side)
(AC240V)
Remote controller
power supply LED
Optional output
Drain pump
output
Remote controller
inter-unit wire
Optional
power supply
TCI sensor
TC2 sensor
TCJ sensor
EXCT
Outside
error input
TA sensor
Float SW
AC fan output
DISP
CHK
Used for servicing
Filter/Option error input
∗1 No function
∗ Short plug is inserted
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7-5. Outdoor Print Circuit Board
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
Inverter P.C. board <MCC-1535> [IPDU1]
Electrolytic condenser (–)
Between fan IPDU
and comp IPDU
Electrolytic condenser (+)
Communication between
I/F and comp IPDU
+5V
+12V
Reactor
+7V
GND
Reactor
Compressor out put
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Noise filter P.C. board <MCC-1551>
– 62 –
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Model selection jumpers
(Available only service P.C. board)
J800 to J803
Refrigerant recovery Switch
SW802
EEPROM-IC
IC801
Dip switch for service
SW801
Case thermo. switch
CN500
Communication signal
(To MCC-1535)
CN800
P.M.V. CN702
TD sensor
CN600
Serial signal
(To terminal block)
CN02
TO sensor
CN601
TE sensor
CN604
AC input
(To MCC-1535)
CN01
TS sensor
CN605
Not use
CN804
4-way valve
CN700
Fan motor 1 (Upper)
revolution
CN300
Fan motor 2 (Lower)
revolution
CN302
Fan motor 1 (Upper)
output
CN301
Fan motor 2 (Lower)
output
CN303
DC15V input
(To MCC-1535)
CN04
DC320V input
(To MCC-1535)
CN03
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8. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS
8-1. Outdoor Controls
8-1-1. Outline of Main Controls
1. Pulse Motor Valve (PMV) control
1) For PMV with 45 to 500 pulses during operation, respectively.
2) In cooling operation, PMV is controlled with the temperature difference between TS sensor and TC sensor.
3) In heating operation, PMV is controlled with the temperature difference between TS sensor and TE sensor.
4) For the temperature difference in items 2) and 3), 1 to 5K is aimed as the target in both cooling and
heating operations.
5) When the cycle excessively rose in both cooling and heating operations, PMV is controlled by TD sensor.
The aimed value is usually 92°C for SM160 in both cooling and heating operations.
REQUIREMENT
A sensor trouble may cause a liquid back-flow or abnormal overheat resulting in excessive shortening of the
compressor life. In a case of trouble on the compressor, be sure to check there is no error in the resistance
value an the refrigerating cycle of each sensor after repair and then start the operation.
2. Discharge temperature release control
TD [˚C]
1) This function controls the operation frequency, that
is, lowers the operation frequency when the
Error stop ("P03" display with 4 times of error counts)
discharge temperature has not lower or the
a
discharge temperature has rapidly risen during
PMV control. It subdivides the frequency control
up to a unit of 0.6 Hz to stabilize the cycle.
Frequency down
b
2) When the discharge temperature is detected in an
abnormal stop zone, the unit stops the compres-
sor and restarts after 2 minutes 30 seconds. The
error counter is cleared when it has continued the
operation for 10 minutes.
c
d
e
Frequency holding
Frequency slow-up
(Up to command)
If the abnormal stop zone has been detected by 4
times without clearing of counter, an error “P03” is
displayed.
As command is
∗ The cause is considered as excessively little
amount of refrigerant, defective PMV, or clogging
of cycle.
[°C]
Current [A]
a
b
c
d
e
Frequency down
Hold
SM160
111
106
100
95
90
I1
Hold
Normal operation
I1–0.5
3. Current release control
The output frequency and the output voltage are
controlled by AC current value detected by T02 on the
outdoor P.C. board so that input current of the inverter
does not exceed the specified value.
SM160
Objective model
COOL
HEAT
I1 value [A]
24.69
28.80
– 64 –
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4. Outdoor fan control
Allocations of fan tap revolutions [rpm]
SM160
High
W1
250 260 260 320 380 480 500 530 610 640 660 720 720 720
240 300 400 500 520 550 630 660 700 740 740 740
W2
W3
W4
W5
W6
W7
W8
W9
WA
WB WC WD WE
WF
780
820
Low
—
—
1) Cooling fan control
The outdoor fan is controlled by TE, TD, and TO sensors and also revolution frequency of the opera-
tion. The outdoor is controlled by every 1 tap of DC fan control (15 taps).
Only during 60 seconds after the operation has started, the fan is fixed with the maximum fan tap
which corresponds to the zone in the following table.
‚
After then the fan is controlled by TE sensor temperature.
Considering a case that TE sensor has come out of the holder, the fan is controlled so that revolution
frequency of the fan increases regardless of TE if temperature of TD sensor has risen.
ƒ
a
b
SM160
37
34
Operation with WE
TE [˚C]
TD [˚C]
+1 tap/20 seconds
rpm hold
85
80
75
65
a
b
Operation with
maximum tap in
each zone
–1 tap/20 seconds
Usual fan control
(The operation frequency differs according to the model type.)
Below 30Hz
Min.
Above 30 Hz below 45 Hz
Above 45 Hz
Min.
Temp. range
Max.
WA
W7
Min.
W7
W5
W4
W3
W2
OFF
W1
Max.
WC
W9
W7
W5
W4
W3
WE
Max.
WE
WB
W9
W7
W5
W3
WE
<
29°C TO
W5
W3
W2
W1
W1
OFF
W1
W9
W7
W6
W4
W3
OFF
W1
<
15 TO < 29°C
<
<
5
0
TO < 15°C
TO < 5°C
W5
W3
<
–5 TO < 0°C
TO < –5°C
TO error
W2
OFF
WE
– 65 –
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2) Heating fan control
The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency.
(From Min. W1 to Max. are controlled according to the following table.)
During 3 minutes after start-up, the fan is fixed
‚
with the maximum fan tap corresponding to
zone in the following table. After then the fan is
controlled by temperature of TE sensor.
TE [˚C]
–2 tap/20 seconds
STOP timer count
>
If status, TE 24°C continues for 5 minutes, the
24
21
18
15
ƒ
„
operation stops.This status is same to the
usual Thermo-OFF which has no alarm display,
and the fan restarts after 2 minutes and 30
seconds.This intermittent operation is not
abnormal.
–2 tap/20 seconds
–1 tap/20 seconds
rpm hold
When the above status
occurs frequently, it
‚
+1 tap/20 seconds
is considered that the filter of suction part of the
indoor unit is stain. Clean the filter and then
restart the operation.
(The operation frequency differs according to the model type. The case of SM110 is shown in the table below.)
Temp. range
Below 37 Hz
Above 37 Hz below 60 Hz
Above 60 Hz
<
10°C TO
W7
WA
WF
WF
W8
WB
WF
WF
W9
WC
WF
WF
<
5
TO < 10°C
Maximum
TO < 5°C
TO error
5. Coil heating control
1) This control function heats the compressor by turning on the stopped compressor instead of a case
heater. It purposes to prevent slackness of the refrigerant inside of the compressor.
2) As usual, turn on power of the compressor for the specified time before a test run after installation,
otherwise a trouble of the compressor may be caused.
As same as a test run, it is recommended to turn on power of the compressor beforehand when starting
operation after power of the compressor has been interrupted for a long time.
3) A judgment for electricity is performed by TD and TO sensors. If TO sensor is defective, a backup control
is automatically performed by TE sensor.
For a case of defective TO sensor, judge it with the outdoor LED display.
4) The power is turned off when TD is 30°C or more.
(In trouble of TO sensor)
TO [˚C]
TE [˚C]
18
15
10
8
20
18
12
10
No power-ON
No power-ON
Power-ON condition
TD < 30˚C
Continuous ON (L)
Continuous ON (M)
Continuous ON (L)
Continuous ON (M)
* TO sensor is read in once per 15 minutes
REQUIREMENT
SM160
L
30W and equivalent
40W and equivalent
While heating the coil, the power sound may be
heard. However it is not a trouble.
M
– 66 –
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6. Short intermittent operation preventive control
1) For 3 to 10 minutes after operation start, in some cases, the compressor does not stop to protect the
compressor even if receiving the thermostat-OFF signal from indoor.
However it is not abnormal status. (The operation continuance differs according to the operation status.)
2) When the operation stops by the remote controller, the operation does not continue.
7. High pressure restraintTE control
1) Control to restraint abnormal rising of high pressure in cooling operation
2) Stop the compressor at TE ≥ 67°C and the error is counted by 1.
3) After 2 minutes and 30 seconds, if TE < 67°C, restart the compressor.
When the operation continues for 10 minutes, the error count is cleared.
4) If TE ≥ 67°C was detected again within 10 minutes, add 1 to the error count and then repeat to restart
the compressor.
5) When the error count 10 is detected, determine it as an error.
Do not restart the compressor. The error “P04” is displayed.
6) After restart of the compressor, control the current release by lowering control value by 70% to 90% for
minimum 30 minutes or more.
8. Over-current protective control
1) When the over-current protective circuit detected an abnormal current, stop the compressor.
2) Restart the compressor 2 minutes and 30 seconds after the error count 1 was indicated.
3) When the error is determined as the error count 8, do not restart the compressor.
The error display is “H01”, “H02” or “P26”.
9. Current release value shift control
1) This control purposes to prevent trouble of the electronic parts such as G-Tr, etc of the inverter in the
compressor driving system and trouble of the compressor.
2) This control corrects the current release control value (I1) of item 3. by TO sensor value.
3) The correction amount is based on the following control diagram and correction amount table.
TO [˚C]
Correction amount
I1 × a %
T + 8
T + 7
T + 5
T + 4
T + 2
T + 1
T
SM160
39°C
60
I1 × b %
T
a
b
c
d
I1 × c %
70
I1 × d %
80
T – 1
Remains as I1
90
– 67 –
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10. Defrost control
In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition
in A zone to D zone.
The defrost operation is immediately finished if TE sensor temperature has become 12°C or more, or it
‚
<
also is finished when condition of 7°C TE < 12°C has continued for 1 minute.The defrost operation is
also finished when defrost operation has continued for 10 minutes even if TE sensor temperature has
become 7°C or lower.
After defrost operation has finished, the compressor and the outdoor fan start heating operation after
stopped for approx. 50 seconds.
ƒ
Start of heating operation
0
10
15
c
b
a
d
[min.]
TE [˚C]
–5
A zone
–10
–13
B zone
–18
D zone
∗
C zone
* The minimum TE value between 10 and 15 minutes after heating operation has started is stored in memory as TE0.
>
A zone
B zone
C zone
D zone
Defrost operation is performed in this zone when TE0-TE 3 continued for T seconds.
>
Defrost operation is performed in this zone when TE0-TE 3 continued for T seconds.
Defrost operation is performed when this zone continued for T seconds.
Defrost operation is performed when this zone continued for T seconds.
SM160
55
a
b
c
d
T
45
40
150
20
– 68 –
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9. INDOOR UNITTROUBLESHOOTING
9-1. Summary ofTroubleshooting
<Wired remote controller type>
1. Before troubleshooting
1) Required tools/instruments
+
–
•
and
screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is not 3-minutes delay (3 minutes after compressor OFF)?
• Is not the outdoor unit in standby status though the remote controller reached the setup
temperature?
• Does not timer operate during fan operation?
• Is not an overflow error detected on the indoor unit?
• Is not outside high-temperature operation controlled in heating operation?
2. Indoor fan does not rotate.
• Does not cool air discharge preventive control work in heating operation?
3. Outdoor fan does not rotate or air volume changes.
• Does not high-temperature release operation control work in heating operation?
• Does not outside low-temperature operation control work in cooling operation?
• Is not defrost operation performed?
4. ON/OFF operation cannot be performed from remote controller.
• Is not the control operation performed from outside/remote side?
• Is not automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed,
the operation cannot be performed for maximum approx. 5 minutes after power-ON.)
• Is not being carried out a test run by operation of the outdoor controller?
b) Did you return the cabling to the initial positions?
c) Are connecting cables of indoor unit and remote controller correct?
2. Troubleshooting procedure
When a trouble occurred, check the parts along with the following procedure.
→
→
Trouble
Confirmation of check code display
Check defective position and parts.
NOTE :
For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer
noise is considered except the items to be checked. If there is any noise source, change the cables of the
remote controller to shield cables.
– 69 –
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9-2. Troubleshooting
9-2-1. Check Code List (Indoor)
(Indoor unit detected)
Check code indication
Air conditioner operation
Representative defective position
Explanation of error contents
TCC-LINK central &
Wired remote controller
Automatic
reset
Operation
continuation
No communication from remote controller and network adapter
E03
Regular communication error between indoor and remote controller
¡
×
(Also no communication from central control system)
E04
E08
E10
Indoor/Outdoor serial error
There is error on serial communication between indoor and outdoor units
Same address as yours was detected.
¡
¡
¡
×
×
×
Duplicated indoor addresses
²
Communication error between indoor MCU
MCU communication error between main motor and micro computer
Regular communication between indoor master and follower units is impossible,
Communication between twin master (main) and follower (sub) units is impossible.
E18
Regular communication error between indoor master and follower units
¡
×
F01
F02
F10
F29
L03
L07
L08
L09
L20
L30
P01
P10
P19
P31
Indoor unit, Heat exchanger (TCJ) error
Indoor unit, Heat exchanger (TC) error
Indoor unit, Room temp. sensor (TA) error
Indoor unit, other indoor P.C. board error
Duplicated setting of indoor group master unit
There is group cable in individual indoor unit.
Unset indoor group address
Open/short was detected on heat exchanger (TCJ).
Open/short was detected on heat exchanger (TC).
¡
¡
¡
×
×
×
×
×
¡
×
×
×
¡
¡
×
×
×
×
×
×
×
×
Open/short was detected on room temp. sensor (TA).
EEPROM error (Other error may be detected. If no error, automatic address is repeated.
There are multiple master units in a group.
²
²
²
When even one group connection indoor unit exists in individual indoor unit.
Indoor group address is unset.
Unset indoor capacity
Capacity of indoor unit is unset.
Duplicated central control system address
Outside error input to indoor unit (Interlock)
Indoor unit, AC fan error
Duplicated setting of central control system address
Abnormal stop by outside error (CN80) input
×
×
×
×
×
×
An error of indoor AC fan was detected. (Fan motor thermal relay worked.)
Float switch worked.
Indoor unit, overflow detection
4-way valve system error
In heating operation, an error was detected by temp. down of indoor heat exchanger sensor.
Follower unit in group cannot operate by warning from [E03/L03/L07/L08] of master unit.
Other indoor unit error
When this warning was detected before group construction/address check finish at power supply was turned on, the mode shifts automatically to AUTO address setup mode.
²
(Remote controller detected)
Check code indication
Air conditioner operation
Representative defective position
Explanation of error contents
Automatic
reset
Operation
continuation
Wired remote controller
Signal cannot be received from indoor unit. Master remote controller was not set.
(including 2 remote controllers)
E01
E02
E09
No master remote controller, Remote controller communication (Receive) error
Remote controller communication (Send) error
—
—
×
—
—
Signal cannot be sent to indoor unit.
In 2-remote controller control, both were set as master.
(Indoor master unit stops warning and follower unit continues operation.)
Duplicated master remote controller
(Central control devices detected)
Check code indication
Air conditioner operation
Representative defective position
Explanation of error contents
Automatic
reset
Operation
continuation
TCC-LINK central
Signal sending operation of central control system is impossible.
There are multiple same central devices. (AI-NET)
C05
—
—
Central control system communication (send) error
C06
C12
P30
Central control system communication (receive) error
General-purpose device control interface batched warning
Group follower unit is defective.
Signal receiving operation of central control system is impossible.
—
—
—
—
—
—
An error on device connected to general-purpose device control interface of exclusive to TCC-LINK/AI-NET
Group follower unit is defective. (For remote controller, above-mentioned [∗∗∗] details are displayed with unit No.)
NOTE: Even for the same contents of error such as communication error, the display of check code may differ according to detection device.
When remote controller or central controller detects an error, it is not necessarily related to operation of the air conditioner. In this list, the check codes that outdoor unit detects are not described.
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Error mode detected by indoor unit
Operation of diagnostic function
Judgment and measures
Check
code
Status of
air conditioner
Cause of operation
Condition
1. Check cables of remote controller and communication adapters.
• Remote controller LCD display OFF (Disconnection)
• Central remote controller [97] check code
No communication from remote
controller (including wireless) and
communication adapter
Stop
Displayed when
E03
(Automatic reset) error is detected
The serial signal is not output from
outdoor unit to indoor unit.
1. Outdoor unit does not completely operate.
• Inter-unit wire check, correction of miswiring
• Check outdoor P.C. board. Correct wiring of P.C. board.
• Miswiring of inter-unit wire
Stop
Displayed when
E04
• Defective serial sending circuit on
outdoor P.C. board
(Automatic reset) error is detected
2. When outdoor unit normally operates
Check P.C. board (Indoor receiving / Outdoor sending).
• Defective serial receiving circuit on
indoor P.C. board
E08
L03
Duplicated indoor unit address
Duplicated indoor master unit
1. Check whether remote controller connection (Group/Individual)
was changed or not after power supply turned on
(Finish of group construction/Address check).
Displayed when
error is detected
* If group construction and address are not normal when the
power has been turned on, the mode automatically shifts to
address setup mode. (Resetting of address)
Stop
There is group wire in individual indoor
unit.
L07
L08
L09
Unset indoor group address
Unset indoor capacity
Displayed when 1. Set indoor capacity (DN=11)
error is detected
Stop
Stop
Displayed when 1. Check outside devices.
L30
P10
Abnormal input of outside interlock
error is detected
2. Check indoor P.C. board.
1. Trouble of drain pump
Float switch operation
Displayed when 2. Clogging of drain pump
Stop
Stop
• Float circuit, Disconnection,
Coming-off, Float switch contact error
error is detected
3. Check float switch.
4. Check indoor P.C. board.
1. Check 4-way valve.
4-way valve system error
Displayed when 2. Check 2-way valve and check valve.
P19
• After heating operation has started,
indoor heat exchangers temp. is
down.
(Automatic reset) error is detected
3. Check indoor heat exchanger (TC/TCJ).
4. Check indoor P.C. board.
Stop
1. Judge follower unit while master unit is [E03], [L03], [L07] or [L08].
2. Check indoor P.C. board.
Own unit stops while warning is output
to other indoor units.
Displayed when
(Follower unit)
error is detected
(Automatic reset)
P31
F01
F02
Coming-off, disconnection or short of
indoor heat exchanger temp. sensor
(TCJ)
1. Check indoor heat exchanger temp. sensor (TCJ).
2. Check indoor P.C. board.
Stop
Displayed when
(Automatic reset) error is detected
Coming-off, disconnection or short of
indoor heat exchanger temp. sensor
(TC)
1. Check indoor heat exchanger temp. sensor (TC).
2. Check indoor P.C. board.
Stop
Displayed when
(Automatic reset) error is detected
Coming-off, disconnection or short of
indoor heat exchanger temp. sensor
(TA)
1. Check indoor heat exchanger temp. sensor (TA).
2. Check indoor P.C. board.
Stop
Displayed when
F10
F29
(Automatic reset) error is detected
Indoor EEPROM error
Stop
Displayed when 1. Check indoor EEPROM. (including socket insertion)
(Automatic reset) error is detected
• EEPROM access error
2. Check indoor P.C. board.
Communication error between indoor
MCU
1. Check indoor P.C. board.
Stop
Displayed when
E10
E18
(Automatic reset) error is detected
• Communication error between fan
driving MCU and main MCU
1. Check remote controller wiring.
2. Check indoor power supply wiring.
3. Check indoor P.C. board.
Regular communication error between
indoor aster and follower units and
between main and sub units
Stop
Displayed when
(Automatic reset) error is detected
– 71 –
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Error mode detected by remote controller or central controller (TCC-LINK)
Operation of diagnostic function
Judgment and measures
Status of
air conditioner
Check code
Cause of operation
Condition
Power supply error of remote controller, Indoor
EEPROM error
1. Check remote controller inter-unit wiring.
2. Check remote controller.
No communication with master indoor unit
• Remote controller wiring is not correct.
• Power of indoor unit is not turned on.
• Automatic address cannot be completed.
Not displayed at all
(Operation on
remote controller
is impossible.)
3. Check indoor power wiring.
4. Check indoor P.C. board.
Stop
—
5. Check indoor EEPROM.
(including socket insertion)
→ Automatic address repeating phenom-
enon generates.
Receiving error from remote controller
1. Check remote controller inter-unit wiring.
2. Check remote controller.
No communication with master indoor unit
Stop
(Automatic reset)
E01
Displayed when
error is detected
• Disconnection of inter-unit wire between
remote controller and master indoor unit
(Detected by remote controller side)
∗ If center exists,
operation continues.
∗2
3. Check indoor power wiring.
4. Check indoor P.C. board.
Stop
Sending error of remote controller
(Automatic reset)
Signal send error to indoor unit
(Detected by remote controller side)
Displayed when 1. Check sending circuit inside of remote
E02
∗ If center exists,
operation continues.
error is detected
controller.
→ Replace remote controller.
1. In 2-remote controllers (including wireless),
there are multiple main units.
Stop
(Sub unit
continues operation.)
There are multiple main remote controllers.
(Detected by remote controller side)
Displayed when
error is detected
E09
L20
Check that there are 1 main remote
controller and other sub remote controllers.
Duplicated indoor central addresses on
communication of central control system
(Detected by indoor/central controller side)
1. Check setting of central control system
network address. (Network adapter SW01)
Stop
(Automatic reset)
Displayed when
error is detected
Central controller
L20
2. Check network adapter P.C. board.
—
1. Check communication wire / miswiring
2. Check communication (U3, U4 terminals)
3. Check network adapter P.C. board.
∗3
Communication circuit error of central
control system
(Detected by central controller side)
Continues
Displayed when
Central controller
(Send)
4. Check central controller (such as central
control remote controller, etc.)
(By remote controller) error is detected
C05
(Receive)
C06
5. Check terminal resistance. (TCC-LINK)
—
Continuation/Stop
(According
to each case)
Indoor Gr sub unit error
(Detected by central controller side)
Displayed when Check the check code of the corresponding
unit from remote controller.
error is detected
Central controller
P30
∗2 The check code cannot be displayed by the wired remote controller.
(Usual operation of air conditioner becomes unavailable.)
For the wireless models, an error is notified with indication lamp.
∗3 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4), and
[E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according to the
contents.
– 72 –
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9-2-2. Diagnostic Procedure for Each Check Code (Indoor Unit)
Check code
[E01 error]
NO
Correct inter-unit cable
of remote controller
Is inter-unit cable of A and B normal?
YES
Is there no disconnection or
contact error of connector on harness
from terminal block of indoor unit?
YES
Correct connection of connector.
Check circuit wiring.
NO
NO
Is group control operation?
YES
NO
Check power connection of indoor unit.
(Turn on power again.)
Is power of all indoor units turned on?
YES
NO
Check indoor P.C. board (MCC-1403).
Is power supplied to remote controller?
AB terminal: Approx. DC18V
Defect → Replace
YES
YES
Are 2 remote controllers set
without master unit?
Correct a master unit/a follower unit.
(Remote controller address connector)
NO
Check remote controller P.C. board.
Defect → Replace
[E09 error]
YES
Are 2 master units set in
2 remote controllers?
Correct as a master unit
and a follower unit.
NO
Check remote controller P.C. board.
Defect → Replace
– 73 –
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[E04 error]
NO
NO
NO
NO
NO
Is group address setup of
remote controller correct?
Does outdoor operate?
Check Item code [14].
YES
YES
Are wiring in indoor unit and
1, 2, 3 inter-unit cables correct?
Correct wiring and
inter-unit cables.
YES
Correct wiring of connector
and terminal blocks.
Are wirings of terminal blocks
(1, 2, 3) wired to CN04 normal?
YES
Check indoor P.C. board.
Does D502 (Orange LED) flash
after power supply turned on again?
Defect → Replace
YES
Check outdoor P.C. board.
Check indoor P.C. board.
Defect → Replace
Defect → Replace
[E10 error]
YES
Check power supply voltage.
Correct lines.
Check and eliminate noise, etc.
Is there no disorder of power supply?
NO
Check indoor control P.C. board
(MCC-1403).
Defect → Replace
– 74 –
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[E18 error]
NO
Correct inter-unit cable
of remote controller.
Is inter-unit cable
of A and B normal?
YES
Is there no disconnection
or contact error of connector
on harness from terminal block
of indoor unit?
YES
Correct connection of connector.
Check circuit wiring.
NO
NO
Is group control operation?
YES
Check power
connection status of indoor unit
(Connect again).
NO
Is power of all indoor units turned on?
YES
NO
Is Twin or Triple control?
YES
Is there no contact error
of indoor/outdoor inter-unit cable
(Signal line) of the main unit?
YES
Correct indoor/outdoor inter-unit cable
(Serial signal line).
NO
Check indoor P.C. board
(MCC-1403).
Defect → Replace
[E08, L03, L07, L08 error]
E08: Duplicated indoor unit No.
L03: There are 2 or more master units in a group control.
L07: There is 1 or more group address [Individual] in a group control.
L08: The indoor group address is unset. (13. ADDRESS SETUP)
If the above error is detected when power supply turned on, the mode enters automatically in the automatic
address set mode. (Check code is not output.)
However, if the above error is detected during the automatic address set mode, a check code may be
output.
[L09 error]
YES
Set capacity data of indoor unit.
(Setup item code (DN)=11)
Is not yet capacity setting
of indoor unit set up?
NO
Check indoor P.C. board (MCC-1403).
Defect → Replace
– 75 –
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[L20 error]
Are wiring connections
to communication lines
U3 and U4 normal?
NO
Correct wiring connection.
YES
YES
Is not the multiple same central
control system addresses connected?
Correct central control system address.
NO
Check central controller
(including network adapter) and
indoor P.C. board (MCC-1403).
Defect → Replace
[L30 error]
NO
NO
Are outside devices of
Check indoor P.C. board (MCC-1403).
connector CN80 connected?
Defect → Replace
YES
Check outside devices.
Defect → Replace
Do outside devices normally work?
YES
Check cause of operation.
[P30 error] (Central controller)
NO
NO
Is group operation carried out?
YES
Is there check code
on sub remote controller in main
and sub remote controllers?
YES
Check indoor P.C. board (MCC-1403).
Check corresponding
indoor unit/outdoor unit.
Defect → Replace
– 76 –
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[P10 error]
Is connection of
NO
NO
float switch connector
(Indoor control board CN34)
normal?
Correct connection
of connector.
YES
YES
Does float switch work?
YES
Is circuit wiring normal?
NO
Check and correct wiring
and wire circuit.
NO
Does drain pump work?
YES
Are connector pins 1 and 2
at drain pump unit side shorted
(Resistance value 0)?
NO
NO
Is power of
drain pump turned on? ∗
YES
YES
Replace drain pump
and indoor P.C. board
(MCC-1403).
Check the drain pipe, etc.
Check indoor P.C. board
(MCC-1403).
Replace drain pump.
Check wiring.
Defect → Replace
∗ Check that voltage of 1-2 pin of CN504 on the indoor P.C. board is +12V. (1 pin is plus (+).)
[F10 error]
NO
Is connection of TA sensor connector
Correct connection of connector.
Replace TA sensor.
(CN104 on indoor P.C. board) correct?
YES
NO
Are characteristics of
TA sensor resistance value normal?
YES
∗ Refer to TA sensor
(Temperature-Resistance value characteristic table)
Check indoor P.C. board (MCC-1403).
Defect → Replace
– 77 –
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[P19 error]
Temperature sensor check
TE sensor CN601
YES
NO
Is operation of 4-way valve normal?
TS sensor CN600
(Check pipe temp., etc. in cooling/heating operation.)
Indoor TC sensor
Defect → Correct and repair
NO
Is the coil resistance value of
4-way valve between 1.3 and 1.6kΩ?
Replace coil of 4-way valve.
YES
Error
Check operation of outdoor P.C. board.
(See below.)
Check outdoor P.C. board.
Defect → replace
OK
Check 4-way valve.
Defect → Replace
Check method of outdoor P.C. board operation (Self-hold valve type : SP110, SP140)
1) Set SW804 of Dip switch as the following figure and then push SW801 for approx. 1 second to check
exchange operation to cooling cycle/heating cycle.
• Power is turned on for approx. 10 seconds.
• When checking again, check operation 1 minute or more after the first check because exothermic of part
(Coil, resistance R700) is large. (There is no problem when coil is not connected.)
2) After check, turn off all the Dip switch SW804.
Exchange to cooling cycle
Exchange to heating cycle
SW804 SW801 CN701
1
SW804 SW801 CN701
1
Push
4
Push
4
DC200V or more
DC200V or more
Note) Check by tester
Analog tester : Good if over DC200V
Digital tester : Good if Max. value is over DC200V though the varied value may be displayed.
– 78 –
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[F02 error]
NO
NO
Is connection of TC sensor connector
Correct connection of connector.
(CN101 on Indoor P.C. board) correct?
YES
Are characteristics of
TC sensor resistance value normal?
Replace TC sensor.
YES
∗ Refer to TC sensor
(Temperature-Resistance value characteristic table)
Check indoor P.C. board (MCC-1403).
Defect → Replace
[F01 error]
NO
NO
Is connection of TCJ sensor connector
(CN102 on Indoor P.C. board) correct?
Correct connection of connector.
Replace TCJ sensor.
YES
Are characteristics of
TCJ sensor resistance value normal?
YES
∗ Refer to TCJ sensor
(Temperature-Resistance value characteristic table)
Check indoor main P.C. board (MCC-1403).
Defect → Replace
– 79 –
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[C06 error] (TCC-LINK central controller)
NO
NO
Are U3 and U4 communication lines normal?
YES
Correct communication line.
∗1
Correct connection of connector.
Is connection of connector normal?
YES
∗1
TCC-LINK central:
CN51 of TCC-LINK adapter P.C. board (MCC-1440) and CN050 of indoor P.C. board
NO
Check connection of A and B terminal blocks.
Correct communication line of remote controller.
Are A and B communication lines normal?
YES
YES
NO
Is there no connection error of power supply cable?
NO
Correct power wiring.
Is not the source power supply turned on?
YES
Turn on the source power supply.
YES
Did a power failure occur?
NO
YES
YES
Is the network address changed
from the remote controller?
Clear the check code.
Eliminate noise, etc.
NO
Is there no noise source?
NO
Uncontrolled
(Same to others)
Can the other indoor units
be normally controlled from the central controller?
Or is the operation status of indoor unit reflected?
Check central controller.
Defect → Replace
YES
Uncontrolled
Can the indoor unit be normally controlled
from the remote controller?
Check indoor P.C. board (MCC-1403).
Defect → Replace
YES
Check power supply transformer on
TCC-LINK adapter P.C. board (MCC-1440).
Defect → Replace
– 80 –
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[E03 error] (Master indoor unit)
[E03 error] is detected when the indoor unit cannot receive a signal from the remote controller
(also central controller).
Check A and B remote controllers and communication lines of the central control system U3 and U4.
As communication is impossible, this check code [E03] is not displayed on the remote controller and the central
controller. [E01] is displayed on the remote controller and [C06 error] is displayed on the central controller.
If these check codes generate during operation, the air conditioner stops.
[F29 error]
This check code indicates a detection error of IC10 non-volatile memory (EEPROM) on the indoor unit P.C.
board, which generated during operation of the air conditioner. Replace the service P.C. board.
∗ When EEPROM was not inserted when power supply turned on or when the EEPROM data read/write
operation is impossible at all, the automatic address mode is repeated. In this time, [97 error] is displayed on
the central controller.
(Approx.
3 minutes)
(Approx.
1 minute)
LED (D02) on indoor unit
P.C. board flashes with
1Hz for approx. 10 seconds.
[SET] is displayed
on remote controller.
[SET]
goes off.
Reboot
(Reset)
(Power ON)
(Repetition)
[P31 error] (Follower indoor unit)
When the master unit of a group operation detected [E03], [L03], [L07] or [L08] error, the follower unit of the
group operation detects [P31 error] and then the unit stops.
There is no display of the check code or alarm history of the remote controller. (In this model, the mode enters
in automatic address set mode when the master unit detected [L03], [L07] or [L08] error.)
– 81 –
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Temperature sensor
Temperature – Resistance value characteristic table
TA,TC,TCJ,TE,TS,TO sensors
TD,TL sensors
Representative value
Representative value
Resistance value (k
Ω
)
Resistance value (k
Ω
)
Temperature
Temperature
(°C)
(°C)
(Minimum value) (Standard value) (Maximum value)
(Minimum value) (Standard value) (Maximum value)
0
10
20
25
30
40
50
60
70
80
90
100
32.33
19.63
12.23
9.75
33.80
20.35
12.59
10.00
7.990
5.192
3.451
2.343
1.623
1.146
0.8237
0.6023
35.30
21.09
12.95
10.25
8.218
5.375
3.594
2.454
1.709
1.213
0.8761
0.6434
0
10
20
25
30
40
50
60
70
80
90
100
150.5
92.76
58.61
47.01
37.93
25.12
17.00
11.74
8.269
5.925
4.321
3.205
161.3
99.05
62.36
49.93
40.22
26.55
17.92
12.34
8.668
6.195
4.507
3.336
172.7
105.6
66.26
52.97
42.59
28.03
18.86
12.95
9.074
6.470
4.696
3.468
7.764
5.013
3.312
2.236
1.540
1.082
0.7740
0.5634
TA,TC,TCJ,TE,TS,TO sensors
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90 100
Temperature (˚C)
TD,TL sensors
200
150
100
50
20
15
10
5
0
0
0
10
20
30
40
50
60
70
80
90 100
Temperature (˚C)
∗ As TH sensor (Outdoor unit heat sink temp. sensor) is incorporated in the outdoor control P.C. board, the
resistance value cannot be measured.
– 82 –
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10. OUTDOOR UNITTROUBLESHOOTING
10-1. Summary ofTroubleshooting
<Wired remote controller type>
1. Before troubleshooting
1) Required tools/instruments
+
–
•
and
screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is not 3-minutes delay (3 minutes after compressor OFF)?
• Is not the outdoor unit in standby status though the remote controller reached the setup
temperature?
• Does not timer operate during fan operation?
• Is not an overflow error detected on the indoor unit?
• Is not outside high-temperature operation controlled in heating operation?
2. Indoor fan does not rotate.
• Does not cool air discharge preventive control work in heating operation?
3. Outdoor fan does not rotate or air volume changes.
• Does not high-temperature release operation control work in heating operation?
• Does not outside low-temperature operation control work in cooling operation?
• Is not defrost operation performed?
4. ON/OFF operation cannot be performed from remote controller.
• Is not the control operation performed from outside/remote side?
• Is not automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed, the
operation cannot be performed for maximum approx. 5 minutes after power-ON.)
• Is not being carried out a test run by operation of the outdoor controller?
b) Did you return the cabling to the initial positions?
c) Are connecting cables of indoor unit and remote controller correct?
2. Troubleshooting procedure
When a trouble occurred, check the parts along with the following procedure.
→
→
Trouble
Confirmation of check code display
Check defective position and parts.
NOTE :
For cause of a trouble, power conditions or malfunction/erroneous diagnosis of microcomputer due to outer
noise is considered except the items to be checked. If there is any noise source, change the cables of the
remote controller to shield cables.
– 83 –
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<Wireless remote controller type>
1. Before troubleshooting
1) Required tools/instruments
+
–
•
and
screwdrivers, spanners, radio cutting pliers, nippers, etc.
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
a) The following operations are normal.
1. Compressor does not operate.
• Is not 3-minutes delay (3 minutes after compressor OFF)?
• Is not the outdoor unit in standby status though the remote controller reached the setup
temperature?
• Does not timer operate during fan operation?
• Is not an overflow error detected on the indoor unit?
• Is not outside high-temperature operation controlled in heating operation?
2. Indoor fan does not rotate.
• Does not cool air discharge preventive control work in heating operation?
3) Outdoor fan does not rotate or air volume changes.
• Does not high-temperature release operation control work in heating operation?
• Does not outside low-temperature operation control work in cooling operation?
• Is not defrost operation performed?
4) ON/OFF operation cannot be performed from remote controller.
• Is not forced operation performed?
• Is not the control operation performed from outside/remote side?
• Is not automatic address being set up?
(When the power is turned on at the first time or when indoor unit address setting is changed, the
operation cannot be performed for maximum approx. 5 minutes after power-ON.)
a) Did you return the cabling to the initial positions?
b) Are connecting cables between indoor unit and receiving unit correct?
2. Troubleshooting procedure
(When the power is turned on at the first time or when indoor unit address setting is changed, the operation
cannot be performed for maximum approx. 5 minutes after power-ON.)
When a trouble occurred, check the parts along with the following procedure.
Check defective position
→
→
Trouble
Confirmation of lamp display
and parts.
– 84 –
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10-2. Troubleshooting
10-2-1. Outline of Judgment
The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with
the following method.
Method to judge the erroneous position by flashing indication on the display part of the indoor unit
(sensors of the receiving part)
The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis
are displayed restricted to the following cases if a protective circuit works.
: Go off,
: Go on,
: Flash (0.5 sec.)
Lamp indication
Operation Timer Ready
Check code
Cause of trouble occurrence
—
Power supply OFF or miswiring between receiving unit and indoor unit
No indication at all
E01
E02
E03
E08
E09
E10
Receiving error
Receiving unit
Miswiring or wire connection error
Sending error
between receiving unit and indoor unit
Communication stop
Operation Timer
Ready
Duplicated indoor unit No.
Setup error
Duplicated master units of remote controller
Flash
Communication error between CPUs on indoor unit P.C. board
Wire connection error between indoor units, Indoor power OFF
(Communication stop between indoor master and follower or between main
and sub indoor twin)
E18
E04
Operation Timer
Operation Timer
Ready
Miswiring between indoor unit and outdoor unit or connection erorr
(Communication stop between indoor and outdoor units)
Flash
Ready
P01
P10
P12
P03
P04
P19
Indoor AC fan error
Overflow was detected.
Indoor DC fan error
Protective device of indoor unit worked.
Alternate flash
Outdoor unit discharge temp. error
Outdoor high pressure system error
Protective device of
outdoor unit worked.
∗1
Operation Timer
Ready
4-way valve system error (Indoor or outdoor unit judged.)
Alternate flash
Stopped because of error of other indoor unit in a group
(Check codes of E03/L03/L07/L08)
P31
∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.
– 85 –
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Lamp indication
Operation Timer
Check code
F01
Cause of trouble occurrence
Heat exchanger sensor (TCJ) error
Ready
Ready
Ready
F02
Heat exchanger sensor (TC) error
Heat exchanger sensor (TA) error
Indoor unit sensor error
Alternate flash
F10
Operation Timer
F04
Discharge temp. sensor (TD) error
Temp. sensor (TE, TS) error
Temp. sensor (TO) error
F06
Sensor error of outdoor unit
∗1
Alternate flash
F08
Operation Timer
F29
Indoor EEPROM error
Simultaneous flash
H01
H02
H03
H06
Compressor break down
Compressor lock
Operation
Timer Ready
Outdoor compressor system error ∗1
Current detection circuit error
Flash
Outdoor unit low pressure system error
L03
L07
L08
L09
Duplicated master indoor units
There is indoor unit of group connection → AUTO address
in individual indoor unit.
Operation Timer
Ready
* If group construction and
Unsetting of group address
address are not normal
when power supply turned on,
automatically goes to address
setup mode.
Missed setting
(Unset indoor capacity)
Simultaneous flash
L20
L29
L30
L31
Duplicated indoor central addresses
Outdoor unit and other error
Outside interlock error
Operation
Timer Ready
Others
Simultaneous flash
Negative phase error
∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.
– 86 –
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10-2-2. Others (Other than Check Code)
Lamp indication
Operation Timer Ready
Check code
Cause of trouble occurrence
—
During test run
Simultaneous flash
Operation Timer Ready
Disagreement of cool/heat
(Automatic cool/heat setting to automatic cool/heat prohibited model, or
—
setting of heating to cooling-only model)
Alternate flash
New Check Code
1. Difference between the new check code and the existing check code
Existing check code
Hexadecimal, 2 digits
Few classifications for communication
New check code
Alphabet + decimal, 2 digits
Many classifications for communication and defective setting
Used characters
Characteristics of
code classification and defective setting
Indoor P.C. board, outdoor P.C. board,
cycle, communication
Communication/defective setting (4 types), indoor protection,
outdoor protection, sensor, compressor protection, etc.
Block display
Display
Classification
NEW SPE is not used.
→
A
C
E
F
H
J
<Display on wired remote controller>
Central control system error
Communication system error
Each sensor error (Defective)
Compressor protection system error
NEW SPE is not used.
TEST
• [
] goes on.
• [UNIT No.] + Check code + Operation lamp (Green) flash.
<Display on wireless sensor>
• Combination block of [Operation
[Ready ] is displayed.
], [Timer
] and
L
Setting error / Other error
Protective device operated
P
– 87 –
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10-2-3. Check Code List (Outdoor)
: Go on,
: Flash, l : Go off
¡
¥
ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED
Sensor lamp part
Remote
Automatic
reset
Operation
continuation
controller
indication
Block indication
Operation Timer Ready Flash
ALT
Representative defective position
Detection
Explanation of error contents
F04
F06
F08
H01
Outdoor unit Discharge temp. sensor (TD) error
Outdoor unit Temp. sensor (TE, TS, TL) error
Outdoor unit Outside temp. sensor (TO) error
Outdoor unit Compressor break down
Outdoor
Outdoor
Open/Short of discharge temp. sensor was detected.
×
×
¡
×
×
×
¡
×
¥
¥
¥
l
¥
¥
¥
¥
¡
¡
¡
l
Open/Short of heat exchanger temp. sensor was detected.
Miswiring between TE sensor and TS sensor
ALT
ALT
Outdoor
Outdoor
Open/Short of outside temp. sensor was detected.
When reached min-Hz by current release control, short-circuited current (Idc) after
DC excitation was detected.
H02
H03
H06
Outdoor unit Compressor lock
Outdoor
Outdoor
Outdoor
Compressor lock was detected.
¥
¥
¥
×
×
×
×
×
×
l
l
l
l
l
l
Outdoor unit Current detection circuit error
Outdoor unit Low pressure system error
Current detection circuit error
Ps pressure sensor error, low pressure protective operation.
1) Defective parts on outdoor P.C. board (MCU communication, EEPROM, TH sensor error)
2) When outdoor service P.C. board was used, model type selection was inappropriate.
3) Other error (Heat sink abnormal overheat, gas leak, 4-way valve inverse error) was detected.
L29
SIM
Outdoor unit Other outdoor unit error
Outdoor unit Discharge temp. error
Outdoor
×
×
¥
¡
¥
P03
P04
ALT
ALT
Outdoor
Outdoor
Error was detected by discharge temp. release control.
×
×
×
×
¥
¥
¥
¥
l
l
Outdoor unit
When case thermostat worked, error was detected by high release control from indoor/
outdoor heat exchanger temp. sensor. Power supply voltage error
High pressure system error, Power supply voltage error
P22
P26
P29
ALT
ALT
ALT
Outdoor unit Outdoor fan error
Outdoor
Outdoor
Outdoor
Error (Over-current, lock, etc.) was detected on outdoor fan drive circuit.
Short-circuited protective operation of compressor drive circuit element (G-Tr /IGBT) worked.
Position detection error of compressor motor was detected.
¥
¥
¥
¥
¥
¥
×
×
×
×
×
×
l
l
l
Outdoor unit Inverter Idc operation
Outdoor unit Position detection error
No remote controller master unit
Remote controller communication error
Remote
controller
Signal was not received from indoor unit.
Main remote controller was not set. (including 2 remote controllers)
E01
E02
E03
—
—
¥
¥
¥
l
l
l
l
l
l
Remote
controller
Remote controller send error
Signal cannot be sent to indoor unit.
—
—
Regular communication error between indoor and
remote controller
Indoor
No communication from remote controller and network adapter
¡
×
×
E04
E08
Indoor/Outdoor serial error
Indoor
Indoor
Serial communication error between indoor and outdoor
Same address as yours was detected.
¥
¡
¡
l
l
l
Duplicated indoor addresses
¥
²
l
Remote
In 2-remote controller control, both were set as master.
E09
E10
E18
Duplicated main remote controllers
Communication error between CPU
×
¡
¡
×
¥
¥
¥
l
l
l
l
l
l
controller
(Indoor master unit stops warning and follower unit continues operation.)
Indoor
Indoor
MCU communication error between main motor and micro computer
Regular communication error between master and
follower indoor units
Regular communication was impossible between master and follower indoor units.
Communication between twin master (Main unit) and follower (sub unit) was impossible.
×
L03
L07
L08
L09
L30
L31
SIM
SIM
SIM
SIM
SIM
SIM
Duplicated indoor master units
Indoor
Indoor
Indoor
Indoor
Indoor
Outdoor
There are multiple master units in a group.
¥
¥
¥
¥
¥
¥
¥
¥
¥
¥
¥
¥
×
×
×
×
×
×
×
×
×
×
×
²
l
l
l
l
¡
¡
There is group cable in individual indoor unit.
When even one group connection indoor unit exists in individual indoor unit
Indoor address group was unset.
²
Unset indoor group address
²
Unset indoor capacity
Capacity of indoor unit was unset.
Outside error input to indoor unit (Interlock)
Phase order error and others
Abnormal stop by CN80 outside error input
Phase order of 3-phases power supply is abnormal (Thermo-OFF operation continues.) and others.
Indoor
Outdoor
P19
ALT
4-way valve inverse error
In heating operation, error was detected by temp. down of indoor heat exchanger or temp. up ofTE, TS.
¡
×
¥
¥
l
When this warning was detected before group construction/address check finish at power supply was turned on, the mode shifts automatically to AUTO address setup mode.
²
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: Go on,
: Flash, l : Go off
¡
¥
ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED
Sensor lamp part
Block indication
Remote
controller
indication
Automatic
reset
Operation
continuation
Representative defective position
Detection
Explanation of error contents
Operation Timer Ready Flash
ALT
F01
F02
F10
F29
P01
P10
P12
P31
Indoor unit Heat exchanger sensor (TCJ) error
Indoor unit Heat exchanger sensor (TC) error
Indoor unit Room temp. sensor (TA) error
Indoor unit Other indoor P.C. board error
Indoor unit Indoor fan error
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
Open/Short of heat exchanger (TCJ) was detected.
¥
¥
¥
¥
l
l
l
¥
¥
¥
¥
¥
¥
¥
¥
l
¡
¡
¡
×
×
×
×
¡
×
×
×
×
×
×
×
×
l
l
l
l
¥
¥
¥
¥
ALT
ALT
SIM
ALT
ALT
ALT
ALT
Open/Short of heat exchanger (TC) was detected.
Open/Short of room temp. (TA) was detected.
EEPROM error (Other error may be detected. If no error, automatic address is repeated.
Indoor AC fan error was detected. (Fan thermal relay worked.)
Float switch worked.
Indoor unit Overflow detection
Indoor unit Indoor fan error
Indoor fan error (Over-current / Lock, etc.) was detected.
Other indoor under condition of warning in group. E03/L07/L03/L08 warning
Other indoor unit error
Sub remote controller error in a group
(Details of remote controller are displayed with unit No. Only central control side is displayed.)
—
—
By unit with warning No.
ALT
Error in indoor group
Network adapter
—
—
Communication error of central control system signal
∗ Is not displayed on the remote controller
Network adapter/
Center
—
LAN system communication error
¡
¡
Network adapter/
Center
L20
—
SIM
LAN system communication error
Duplicated indoor address of central control system communication
¥
¡
¥
¡
¡
×
¡
—
There are multiple communication adapters.
Network adapter
There are multiple communication adapters on remote controller communication line.
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Error mode detected by indoor unit
Operation of diagnostic function
Judgment and measures
Check
code
Status of
air conditioner
Cause of operation
Condition
1. Check cables of remote controller and communication adapters.
• Remote controller LCD display OFF (Disconnection)
• Central remote controller [97] check code
No communication from remote
controller (including wireless) and
communication adapter
Stop
Displayed when
E03
(Automatic reset) error is detected
The serial signal is not output from
outdoor unit to indoor unit.
1. Outdoor unit does not completely operate.
• Inter-unit wire check, correction of miswiring
• Check outdoor P.C. board. Correct wiring of P.C. board.
• Miswiring of inter-unit wire
Stop
Displayed when
E04
• Defective serial sending circuit on
outdoor P.C. board
(Automatic reset) error is detected
2. When outdoor unit normally operates
Check P.C. board (Indoor receiving / Outdoor sending).
• Defective serial receiving circuit on
indoor P.C. board
E08
L03
Duplicated indoor unit address
Duplicated indoor master unit
1. Check whether remote controller connection (Group/Individual)
was changed or not after power supply turned on
(Finish of group construction/Address check).
Displayed when
error is detected
* If group construction and address are not normal when the
power has been turned on, the mode automatically shifts to
address setup mode. (Resetting of address)
Stop
There is group wire in individual indoor
unit.
L07
L08
L09
Unset indoor group address
Unset indoor capacity
Displayed when 1. Set indoor capacity (DN=11)
error is detected
Stop
Stop
1. Check outside devices.
2. Check indoor P.C. board.
Displayed when
error is detected
L30
P01
Abnormal input of outside interlock
Fan motor thermal protection
1. Check fan motor thermal relay.
2. Check indoor P.C. board.
Displayed when
error is detected
Stop
Stop
1. Trouble of drain pump
Float switch operation
Displayed when 2. Clogging of drain pump
P10
P12
P19
• Float circuit, Disconnection,
Coming-off, Float switch contact error
error is detected
3. Check float switch.
4. Check indoor P.C. board.
1. Position detection error
Displayed when 2. Over-current protective circuit of indoor fan driving unit operated.
Indoor DC fan error
Stop
Stop
error is detected
3. Indoor fan locked.
4. Check indoor P.C. board.
1. Check 4-way valve.
4-way valve system error
Displayed when 2. Check 2-way valve and check valve.
• After heating operation has started,
indoor heat exchangers temp. is
down.
(Automatic reset) error is detected
3. Check indoor heat exchanger (TC/TCJ).
4. Check indoor P.C. board.
Stop
1. Judge follower unit while master unit is [E03], [L03], [L07] or [L08].
2. Check indoor P.C. board.
Own unit stops while warning is output
to other indoor units.
Displayed when
(Follower unit)
error is detected
(Automatic reset)
P31
F01
F02
Coming-off, disconnection or short of
indoor heat exchanger temp. sensor
(TCJ)
1. Check indoor heat exchanger temp. sensor (TCJ).
2. Check indoor P.C. board.
Stop
Displayed when
(Automatic reset) error is detected
Coming-off, disconnection or short of
indoor heat exchanger temp. sensor
(TC)
1. Check indoor heat exchanger temp. sensor (TC).
2. Check indoor P.C. board.
Stop
Displayed when
(Automatic reset) error is detected
Coming-off, disconnection or short of
indoor heat exchanger temp. sensor
(TA)
1. Check indoor heat exchanger temp. sensor (TA).
2. Check indoor P.C. board.
Stop
Displayed when
F10
F29
(Automatic reset) error is detected
Indoor EEPROM error
Stop
Displayed when 1. Check indoor EEPROM. (including socket insertion)
(Automatic reset) error is detected
• EEPROM access error
2. Check indoor P.C. board.
Communication error between indoor
MCU
1. Check indoor P.C. board.
Stop
Displayed when
E10
E18
(Automatic reset) error is detected
• Communication error between fan
driving MCU and main MCU
1. Check remote controller wiring.
2. Check indoor power supply wiring.
3. Check indoor P.C. board.
Regular communication error between
indoor aster and follower units and
between main and sub units
Stop
Displayed when
(Automatic reset) error is detected
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Error mode detected by remote controller or central controller (TCC-LINK)
Opera.tion of diagnostic function
Judgment and measures
Status of
air conditioner
Check code
Cause of operation
Condition
Power supply error of remote controller, Indoor
EEPROM error
1. Check remote controller inter-unit wiring.
2. Check remote controller.
No communication with master indoor unit
• Remote controller wiring is not correct.
• Power of indoor unit is not turned on.
• Automatic address cannot be completed.
Not displayed at all
(Operation on
remote controller
is impossible.)
3. Check indoor power wiring.
4. Check indoor P.C. board.
Stop
—
5. Check indoor EEPROM.
(including socket insertion)
→ Automatic address repeating phenom-
enon generates.
Receiving error from remote controller
1. Check remote controller inter-unit wiring.
2. Check remote controller.
No communication with master indoor unit
Stop
(Automatic reset)
E01
• Disconnection of inter-unit wire between
remote controller and master indoor unit
(Detected by remote controller side)
Displayed when
error is detected
∗ If center exists,
∗2
3. Check indoor power wiring.
operation continues.
4. Check indoor P.C. board.
Stop
Sending error of remote controller
(Automatic reset)
Signal send error to indoor unit
(Detected by remote controller side)
Displayed when 1. Check sending circuit inside of remote
E02
∗ If center exists,
error is detected
controller.
operation continues.
→ Replace remote controller.
1. In 2-remote controllers (including wireless),
there are multiple main units.
Stop
(Sub unit
continues operation.)
There are multiple main remote controllers.
(Detected by remote controller side)
Displayed when
error is detected
E09
L20
Check that there are 1 main remote
controller and other sub remote controllers.
1. Check setting of central control system
network address. (Network adapter SW01)
Duplicated indoor central addresses on
communication of central control system
(Detected by indoor/central controller side)
Stop
(Automatic reset)
Displayed when
error is detected
Central controller
98
2. Check network adapter P.C. board.
1. Check the multiple network adapters.
—
∗3
There are multiple network adapters on the
remote controller communication line.
(Central controller side detected.)
Displayed when 2. Check inter-unit wire of remote controller /
Continues
error is detected
miswiring.
Central controller
99
→ There should be only 1 adapter on the
A
network.
1. Check communication wire / miswiring
2. Check communication (U3, U4 terminals)
—
∗3
Communication circuit error of central
control system
(Detected by central controller side)
Continues
Displayed when 3. Check network adapter P.C. board.
(By remote controller) error is detected
4. Check central controller (such as central
control remote controller, etc.)
Central controller
97
5. Check terminal resistance. (TCC-LINK)
—
Continuation/Stop
(According
to each case)
Indoor Gr sub unit error
(Detected by central controller side)
Displayed when Check the check code of the corresponding
error is detected unit from remote controller.
Central controller
67
∗2 The check code cannot be displayed by the wired remote controller.
(Usual operation of air conditioner becomes unavailable.)
For the wireless models, an error is notified with indication lamp.
∗3 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4), and
[E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according to the
contents.
– 91 –
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Error mode detected by outdoor unit
Operation of diagnostic function
Check code
Indoor unit
Judgment anAd measures
Status of
air conditioner
Cause of operation
Condition
Disconnection, short of discharge temp. sensor
(TD)
1. Check discharge temp. sensor (TD).
2. Check outdoor P.C. board.
Displayed when
error is detected
Stop
Stop
F04
F06
F08
Disconnection, short of outdoor temp. sensor
(TE, TS)
1. Check temp. sensor (TE, TS).
Displayed when
error is detected
2. Check outdoor P.C. board (CDB, IPDU).
1. Check outside temp. sensor (TO).
Displayed when
error is detected
Continue
Disconnection, short of outside temp. sensor (TO)
Compressor break down
2. Check outdoor P.C. board (CDB, IPDU).
1. Check power supply voltage.
(AC198 to 264V)
Displayed when
error is detected
H01
Stop
∗ Although operation has started, operation
frequency decreases and operation stops.
2. Overload operation of refrigerating cycle
1. Trouble of compressor (Lock, etc.):
Replace compressor.
Compressor lock
Displayed when
error is detected
H02
H03
H06
Stop
Stop
∗ Over-current detection after compressor start-up
2. Wiring error of compressor (Open phase)
1. Check outdoor P.C. board.
(AC current detection circuit)
Displayed when
error is detected
Current detection circuit error
1. Check the refrigerating cycle. (Gas leak)
2. Check low-pressure switch system circuit.
3. Check P.C. board of the outdoor CDB.
Low pressure switch operated.
(Model with low-pressure switch)
Displayed when
error is detected
Stop
Stop
Cooling: 30 seconds
Heating: 10 minutes
Overload for (compressing) of compressor,
outdoor unit error and other error
1. Check wiring of CDB and IPDU.
2. Abnormal overload operation of refrigerating
cycle.
• Communication error between CDB and IPDU
(Coming-out of connector)
Displayed when
error is detected
L29
3. Check power supply voltage.
• Temperature error of heat sink (Temperature
over specified value was detected.)
1. Check phase missing.
Displayed when
error is detected
Continues
(Compressor stops.)
2. Check outdoor P.C. board.
L31 ∗1
Phase detection protective circuit operated.
3. Check high pressure switch.
4. Check circuit wiring of high pressure switch.
1. Check refrigerating cycle. (Gas leak)
2. Trouble of electron expansion valve
3. Check piping sensor (Td).
Discharge temperature error
Displayed when
error is detected
P03
Stop
Stop
• Discharge temperature higher than specified
value was detected.
1. Overload operation of refrigerating cycle
2. Check outdoor temperature sensor (TE).
High-pressure protection error of TE sensor
(Temperature higher than specified value was
detected.)
Displayed when
error is detected
P04
P22
3. Check outdoor control P.C. board.
(CDB and main P.C. board)
High pressure switch
(Model with high pressure switch)
4. Check high pressure switch and circuit.
1. Check lock of fan motor.
Displayed when
error is detected
2. Check power supply voltage. AC198 to 264V
3. Check outdoor P.C. board.
Outdoor fan system error
Stop
1. When performing operation while taking-off
compressor wire, P26 error occurs.
Check control P.C. board.
Displayed when
error is detected
P26
P29
Stop
Stop
Short-circuit error of compressor driving element
Position detection circuit error
2. When performing operation while taking-off
compressor wire, an error does not occur.
(Compressor rare short)
1. Check control P.C. board.
Displayed when
error is detected
– 92 –
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10-2-4. Distinction of error mode by LED indication of outdoor unit
On the Type AP112, AP140 and AP160, a Dip switch (SW801) and LED are provided on the P.C. board of the
outdoor unit.
Exchanging this Dip switch enables users to know the status of the outdoor unit in that time.
Lighting status of LED enables users to know the distinction stage before trouble of the outdoor unit will be
determined and displayed on the remote controller.
Depending on the indoor unit to be combined, the error of the outdoor temperature sensor (TO) may be
confirmed on LED indication only.
Model
Dip switch
SW801
LED
SM160
(MCC-1531)
D800
(Red)
D801
(Yellow)
D802
D803
(Yellow)
(Yellow)
Bit 1
Bit 2
For error display,
refer to on the next page.
During timer short
OFF
OFF
²
l
l
l
l
During pump down operation
²
²
²
Protective operation count
Normal time, Count 1
Count2, Count 3
l
l
¡
l
¡
Under backup control
l
¡
¡
ON
OFF
ON
——
Count 4, Count 5
¥
Count 6, Count 7
Protective operation
² ²
PMV opening data (Lower 4 bits data)
OFF
When this LED lights,
add +16 pulses.
When this LED lights,
add +8 pulses.
When this LED lights,
add +4 pulses.
When this LED lights,
add +2 pulses.
PMV opening data (Upper 4 bits data)
When this LED lights,
add +256 pulses.
When this LED lights,
add +128 pulses.
When this LED lights,
add +64 pulses.
When this LED lights,
add +32 pulses.
ON
ON
Total pulses of LED which lights at the respective positions become PMV opening.
For example, in case of (Upper 4 bits, Lower 4 bits),
¡
¡
¡¡
ll
PMV opening becomes 25l6 +l32 + 4 + 2 = 294 pulses.
: Go on,
: 1Hz flash,
: 5Hz flash
l : Go off,
²
¡
¥
– 93 –
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You can perform fault diagnosis of the outdoor unit with the LEDs on the P.C. board of the outdoor unit in
addition to check codes displayed on the wired remote controller of the indoor unit.
Use the LEDs and check codes for various checks. Details of check codes displayed on the wired remote
controller of the indoor unit are described in the Installation Manual of the indoor unit.
LED indication and code checking
Cycle control P.C. board
LED indication
LED indication
Cause
D800 D801 D802 D803
Heat exchanger sensor (TE) error
Suction sensor (TS) error
¡
l l l
¡
l l
l
Discharge sensor (TD) error
Thermostat for compressor activated.
Outdoor temperature sensor (TO) error
DC outdoor fan error (Upper side)
DC outdoor fan error (Lower side)
Communication error between IPDU (Abnormal stop)
Comp. case thermo. operate – Serial signal error
Discharge temp. error
¡
l
l
¡
¡
¡
¥
l
¡
¡
¡
¡
¡
¡
l l
¡
l
D800
D801
D802
D803
: Red
¡
¡
¡
¡
:Yellow
:Yellow
:Yellow
l l
¡
¡
l
¡
¡
l
l
¡
¡
l l
¥
¡
¡
¥
¡
l
¡
EEPROM error
Communication error between IPDU (No abnormal stop)
G – Tr short – circuit protection
Detect circuit error
l l
¥
l
¥
l l l
: Rapid flash
: Go off
¥
¥
l l
l l
¥
l
¡
Current sensor error
: Go on
Comp. lock error
¥
¥
l
¥
l l
l
l
¡
l
Comp. break down
¥
l
¥
l
¡
¥
High-pressure release operation
TH sensor error
– 94 –
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10-2-5. Diagnostic Procedure for Each Check Code (Indoor Unit)
Check code
[E01 error]
NO
Correct inter-unit cable
of remote controller
Is inter-unit cable of A and B normal?
YES
Is there no disconnection or
contact error of connector on harness
from terminal block of indoor unit?
YES
Correct connection of connector.
Check circuit wiring.
NO
NO
Is group control operation?
YES
NO
Check power connection of indoor unit.
(Turn on power again.)
Is power of all indoor units turned on?
YES
NO
Check indoor P.C. board (MCC-1570).
Is power supplied to remote controller?
AB terminal: Approx. DC18V
Defect → Replace
YES
YES
Are 2 remote controllers set
without master unit?
Correct a master unit/a sub unit.
(Remote controller address connector)
NO
Check remote controller P.C. board.
Defect → Replace
[E09 error]
YES
Are 2 master units set in
2 remote controllers?
Correct as a master unit
and a sub unit.
NO
Check remote controller P.C. board.
Defect → Replace
– 95 –
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[E04 error]
NO
Does outdoor unit operate?
YES
NO
NO
Check item code [14].
Correct inter-unit cable.
Is setup of group address correct?
YES
Are 1, 2, 3 inter-unit cables normal?
YES
Are connections from connectors
of inter-terminal blocks (1, 2, 3)
of indoor/outdoor units normal?
NO
NO
Correct connection of connector.
YES
Does voltage between
2 and 3 of inter-terminal blocks (1, 2, 3)
of indoor unit vary?∗
Check indoor P.C. board.
Defect → Replace
YES
∗ As shown in the following figure, perform measurement
within 20 seconds after power ON.
S5277G
Black
White
3
2
1
Inter-terminal block
Is DC280V applied between
terminals of the electrolytic condenser
of IPDU main circuit?
NO
NO
YES
Is power DC280V supplied to CDB? (CN03)
YES
Replace IPDU.
Is power DC7V supplied to CDB?
Are wiring between (CN800)
2
pin
NO
Replace IPDU.
Correct connection of connector.
and
5
pin, and wiring between
IPDU and CDB correct?
CN06 ↔ CN800
YES
NO
Is case thermo (CN500) connected?
YES
Correct connection of connector.
YES
Check/Correct charged
refrigerant amount.
Does case thermo. operate?
NO
Check indoor P.C. board.
Defect → Replace
– 96 –
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[E10 error]
YES
Check power supply voltage.
Correct lines.
Check and eliminate noise, etc.
Is there no disorder of power supply?
NO
Check indoor control P.C. board.
Defect → Replace
[E18 error]
NO
Correct inter-unit cable
of remote controller.
Is inter-unit cable
of A and B normal?
YES
Is there no disconnection
or contact error of connector
on harness from terminal block
of indoor unit?
YES
Correct connection of connector.
Check circuit wiring.
NO
NO
Is group control operation?
YES
Check power
connection status of indoor unit
(Connect again).
NO
Is power of all indoor units turned on?
YES
NO
Is Twin or Triple control?
YES
Is there no contact error
of indoor/outdoor inter-unit cable
(Signal line) of the main unit?
YES
Correct indoor/outdoor inter-unit cable
(Serial signal line).
NO
Check indoor P.C. board.
Defect → Replace
[E08, L03, L07, L08 error]
E08: Duplicated indoor unit No.
L03: There are 2 or more master units in a group control.
L07: There is 1 or more group address [Individual] in a group control.
L08: The indoor group address is unset. (13. ADDRESS SETUP)
If the above error is detected when power supply turned on, the mode enters automatically in the automatic
address set mode. (Check code is not output.)
However, if the above error is detected during the automatic address set mode, a check code may be
output.
– 97 –
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[L09 error]
YES
Is not yet capacity setting
of indoor unit set up?
Set capacity data of indoor unit.
(Setup item code (DN)=11)
NO
Check indoor P.C. board.
Defect → Replace
[L20 error]
Are wiring connections
to communication lines
X and Y normal?
NO
NO
Correct wiring connection.
YES
Check indoor P.C. board.
Is the central controller
[98] displayed?
Defect → Replace
YES
Is the indoor remote controller
[L20] displayed?
YES
YES
Is not the multiple same central
control system addresses connected?
Correct central control system address.
NO
Check central controller
(including network adapter).
Defect → Replace
[L30 error]
NO
NO
Check indoor P.C. board.
Are outside devices of
Defect → Replace
connector CN80 connected?
YES
Check outside devices.
Defect → Replace
Do outside devices normally work?
YES
Check cause of operation.
– 98 –
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[b7 error] (Central controller)
NO
NO
Is group operation carried out?
YES
Is there check code
on the follower unit of
main/sub remote controllers?
Check indoor P.C. board.
Defect à Replace
YES
Check the corresponding
indoor unit and outdoor unit.
[P01 error]
Isn’t there
any connection error/disconnection
of CN076 connector?
YES
Correct wiring circuit
of the connector connection.
NO
NO
Replace condenser.
Replace fan motor.
Is the condenser normal?
YES
YES
Isn’t there mechanical lock
of the fan motor?
NO
Replace fan motor.
Check indoor P.C. board.
Defect → Replace
– 99 –
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[P10 error]
Is connection of
NO
NO
float switch connector
(Indoor control board CN34)
normal?
Correct connection
of connector.
YES
YES
Does float switch work?
YES
Is circuit wiring normal?
NO
Check and correct wiring
and wire circuit.
NO
Does drain pump work?
YES
NO
Is power of
drain pump turned on?
∗
YES
Replace drain pump.
Check wiring.
Check indoor P.C. board.
Defect → Replace
Check the drain pipe, etc.
∗ Check that voltage of 1-3 pin of CN68 on the indoor P.C. board is +200V.
[F10 error]
NO
Is connection of TA sensor connector
Correct connection of connector.
Replace TA sensor.
(CN104 on indoor P.C. board) correct?
YES
NO
Are characteristics of
TA sensor resistance value normal?
∗∗
YES
Refer to 10-2-6. Relational graph of
temperature sensor resistance value
and temperature Characteristics-1.
∗∗
Check indoor P.C. board.
Defect → Replace
– 100 –
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[P12 error]
Turn off the power.
Is there no connection error or
disconnection on connectors CN333
and CN334 of indoor unit
YES
Correct connection
of connector.
CN333
P.C. board (MCC-1402)?
NO
Remove connectors CN333 and CN334
of indoor unit P.C. board (MCC-1402).
CN334
NO
Does the fan rotate without trouble
when handling the fan with hands?
Replace indoor fan motor.
YES
Are resistance values
between phases at fan motor connector
CN333 motor side of indoor P.C. board
(MCC-1402) correct? ∗1
Incorrect
Replace indoor fan motor.
Correct
∗1
• Are not coil windings between ꢀ (Red lead) and ꢁ (White lead),
between ꢁ (White lead) and ꢂ (Black lead),
between ꢂ (Black lead) and ꢀ (Red lead) opened or shorted?
→ The resistance should be the resistance value below.
SM56, SM80 → Approx. 70 to 100Ω
SM110, SM140, SM160 → Approx. 27 to 40Ω
• Is not grounded between cabinet and ꢀ, ꢁ, ꢂ. → It should be 10MΩ or more.
Is resistance value of
fan motor connector CN334 motor side
Incorrect
Replace indoor fan motor.
of indoor P.C. board correct? ∗2
Correct
∗2
Resistance value confirmation of the fan motor position detection circuit
Is not status between ꢀ (Yellow lead) and ꢃ (Pink lead) opened or shorted?
→ The resistance should be approx. 5k to 20kΩ.
Is output of
indoor fan motor position
NO
Replace indoor fan motor.
detection signal correct? ∗3
YES
∗3
Confirmation of the fan motor position detection signal
• Using a voltage tester, measure voltage between CN334 ꢀ and ꢁ on the indoor P.C. board
(MCC-1570) under condition that CN333 and CN334 are mounted and the power supply is turned on.
→ When rotating the fan slowly with hands, the pin voltage should shake between 0 and 5V.
• Between ꢃ and ꢁ: 5V
Check indoor P.C. board.
Defect → Replace
– 101 –
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[P22 error]
Are connections of CN300, CN301, CN302 and
Correct connection of connector.
CN303 of P.C. board correct?
YES
Does the fan rotate without trouble
when handling the fan with hands under condition
of removing CN300, CN301, CN302
and CN303 from P.C. board?
NO
NO
CN301,
∗
CN303
YES
The status that the resistance values
between leads below are 12 to 22Ω.
Between
Between
Between
1
2
3
(Red lead) and
(White lead) and
(Black lead) and
2
3
1
(White lead)
(Black lead)
(Red lead) of
motor winding of connector (CN301, CN303)
YES
CN300
The status that there is
CN300 : Motor coil winding
CN301 : Motor position detection
10k to 12kΩ resistance values between
NO
1
(Yellow lead) and
4
(Pink lead)
of motor position detection of connector
(CN300, CN302) is normal.
∗
CN301, CN303 : Motor coil winding
CN300, CN302 : Motor position detection
YES
Normal fan motor
Defective fan motor
(Defective CDB P.C. board)
NOTE :
However, GND circuit error inside of the motor is rarely detected even if the above check is carried out.
When the circuit does not become normal even if P.C. board has been replaced, replace outdoor fan motor.
RAV-SM160AT-E
Objective P.C. board
Fan motor winding
CDB P.C. board (MCC-1531)
CN301/CN303
Motor position detection
Fan motor model
CN300/CN302
ICF-280-100
Motor winding resistance
12 to 22 Ω
– 102 –
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[P19 error]
NO
NO
Is operation of
4-way valve normal?
4-way valve coil
conduction?
YES
YES
NO
Is flow of refrigerant
by electron expansion
valve normal?
YES
Is 4-way valve
coil terminal 200V
Check 4-way valve
Defect → Replace
NO
YES
Is circuit cable normal?
Connection of CN01 on CDB
and CN13 on IPDU
Check and replace
electron expansion valve.
NO
(Both connectors are Red)
YES
Are characteristics
NO
Check and
correct circuit.
of TC sensor resistance
value normal?
∗
YES
Defect
Check CDB P.C. board.
Normal
Check indoor P.C. board.
Check CDB P.C. board.
Replace TC sensor.
Defect → Replace
Defect → Replace
• In cooling operation, if high pressure is abnormally raised, [P19 error]/[08 error] may be displayed. In this
case, remove cause of pressure up and then check again referring to the item [P04 error]/[21 error].
[F02 error]
NO
Is connection of TC sensor connector
Correct connection of connector.
(Indoor P.C. board CN101) normal?
YES
NO
Are characteristics of
Replace TC sensor.
TC sensor resistance value normal?
∗
YES
Refer to 10-2-6. Relational graph of
∗
Check indoor P.C. board.
temperature sensor resistance value
Defect → Replace
and temperature Characteristics-2.
– 103 –
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[F01 error]
NO
NO
Is connection of TCJ sensor connector
Correct connection of connector.
Replace TCJ sensor.
(Indoor P.C. board CN102) normal?
YES
Are characteristics of
TCJ sensor resistance value normal?
∗
YES
Refer to 10-2-6. Relational graph of
temperature sensor resistance value
and temperature Characteristics-2.
∗
Check indoor P.C. board.
Defect → Replace
[P26 error]
NO
NO
Improve the power supply line.
Is power voltage normal?
YES
Check and correct circuit cables.
Correct connection of connector.
Check and correct reactor connection.
Are connections of
cabling/connector normal?
YES
NO
NO
“14” error does not occur during operation when
Replace IPDU.
3P connector of compressor is not connected ?
YES
Check defective rear short of compressor.
Is compressor normal?
YES
Defect → Replace
Check IPDU.
Defect → Replace.
– 104 –
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[P29 error]
NO
NO
Check and correct circuit cabling
such as cabling to compressor.
Are connections of
cable/connector normal?
YES
YES
Is not earthed?
NO
Is compressor normal?
YES
YES
Is not winding shorted?
(Is resistance between windings 0.6 to 1.2Ω?)
NO
YES
Is not winding opened?
NO
Check IPDU P.C. board.
Compressor error → Replace
Defect → Replace
[F06 error]
NO
Are connections of TE/TS sensor
Correct connection of connector.
Replace TE and TS sensors.
connectors of CDB CN604/CN605 normal?
YES
NO
Are characteristics of TE/TS sensor
resistance values normal?
∗
YES
Check CDB.
Defect → Replace
Refer to relational graph of temperature sensor resistance value
and temperature Characteristics-3.
∗
[P04 error]
NO
NO
Is connection of TD sensor connector
of CDB CN600 normal?
Correct connection of connector.
Replace TD sensor.
YES
Are characteristics of TD sensor
resistance value normal?
∗
YES
Check control P.C. board.
Refer to relational graph of temperature sensor resistance value
and temperature Characteristics-4.
∗
Defect → Replace
– 105 –
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[F08 error]
NO
NO
Is connection of TO sensor connector
Correct connection of connector.
Replace TO sensor.
of CDB CN601 normal?
YES
Are characteristics of TO sensor
resistance value normal?
∗
YES
Check CDB.
Defect → Replace
Refer to relational graph of temperature sensor resistance value
and temperature Characteristics-5.
∗
[L29 error]
NO
Are connections of CDB CN800
and IPDU CN06 connectors normal?
Correct connection of connector.
YES
YES
NO
Was the error just
after power ON determined?
Are cabling/
connector normal?
Check cabling between IPDU
and CDB and connector.
YES
NO
IPDU P.C. board error
Defect → Replace
YES
NO
Improve and eliminate the cause.
Correct mounting.
Is there no abnormal overload?
NO
Is IPDU P.C. board come
to closely contact with heat sink?
YES
IPDU P.C. board error
Defect → Replace
[H02 error]
NO
NO
NO
Improve power line.
Is power voltage normal?
YES
Check and correct circuit cabling such
as cabling to compressor
(phase missing) and connector.
Are connections of
cable/connector normal?
YES
NO
Is there no
Compressor lock → Replace
Is compressor normal?
YES
slackened refrigerant?
YES
YES
NO
Does electron expansion
valve normally operate?
Check IPDU and CDB.
Defect → Replace
Check TE and TS sensors. → Replace
Check electron expansion valve. → Replace
– 106 –
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[P03 error]
NO
NO
Is protective control
such as discharge temprelease
control normal?
Correct the cabling and
connection of connector.
Are connections of
cable/connector normal?
YES
YES
Check parts.
Defect → Replace
NO
Is charged refrigerant
amount normal?
Check and correct the
charged refrigerant amount.
YES
YES
Improve and
delete the cause
Is not abnormal overload?
NO
Are characteristics
NO
of TD sensor resistance
Replace TD sensor.
value normal?
∗
YES
Check CDB.
Defect → Replace
Refer to 10-2-6. Relational graph of temperature sensor
resistance value and temperature Characteristics-4.
∗
[H01 error]
NO
Is power voltage normal?
YES
Improve power line.
YES
Is not abnormal overload?
NO
Improve and delete the cause.
Check IPDU.
Defect → Replace
– 107 –
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[P04 error]
Is high-voltage
protective operation by
TE sensor normal?
NO
YES
NO
Is connection of cabling
connector normal?
Correct connection
of cabling connector.
YES
Check TE sensor.
Defect → Replace
NO
Does cooling outdoor fan
normally operate?
YES
NO
NO
Is connection of
Correct connection
of connector.
connector normal?
YES
Is fan motor normal?
YES
Replace fan motor.
NO
Does PMV normally operate?
YES
NO
NO
Check TE, TC, TS sensors.
Replace electron expansion valve.
Do not TD and TO sensors
come off the detection part?
Correct coming-off.
YES
Are characteristics of
TD, TO, TC sensor resistance
Replace TD, TO,
and TC sensors.
values normal?
∗
YES
Check charged refrigerant amount.
Check CDB.
Defect → Replace
Check liquid/gas valves.
Check abnormal overload.
Refer to 10-2-6. Relational graph of temperature sensor
resistance value and temperature Characteristics-3, 4.
∗
– 108 –
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[97 error] (Central controller)
NO
NO
Are X and Y communication lines normal?
YES
Correct communication line.
Are CN01, CN02 and CN03
of the network adapter P.C. board
(MCC-1401) and CN309 and CN41
connectors correctly connected?
Correct connection of connector.
YES
NO
YES
NO
Check connection of A and B terminal blocks.
Correct communication line of remote controller.
Are A and B communication lines normal?
YES
Correct power supply wire.
Turn on main power supply.
Is there no connection error of power supply wire?
NO
Is the main power supply electrified?
YES
YES
Did a power failure occur?
NO
YES
YES
Is the network address changed
from the remote controller?
Clear the check code.
Eliminate noise, etc.
NO
Is there noise source, etc?
NO
No
(Same to others)
Can other indoor units be correctly
controlled from central remote controller?
And is the operation status
Check central controller.
Defect → Replace
of the indoor unit reflected?
YES
NO
Does the network adapter P.C. board
LED (D01) go on?
YES
NO
YES
Can indoor unit be normally controlled
from the remote controller?
Check network adapter P.C. board
Check indoor P.C. board.
(MCC-1401) and transformer of power supply.
Defect → Replace
Defect → Replace
– 109 –
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[E03 error] (Master indoor unit)
[E03 error] is detected when the indoor unit cannot receive a signal sent from the main remote controller
(and central controller).
In this case, check the communication cables of the remote controllers A and B, the central control system X
and Y. As communication is disabled, [E03] is not displayed on the main remote controller and the central
controller. [E01] is displayed on the main remote controller and [97 error] on the central controller, respectively.
If [E03] occurs during an operation, the air conditioner stops.
[F29 error] / [12 error]
[F29 error] or [12 error] indicates detection of trouble which occurred on IC10 non-volatile memory (EEPROM)
on the indoor unit P.C. board during operation of the air conditioner. Replace the service P.C. board.
∗ If EEPROM has not been inserted when the power was turned on or if EEPROM data never be read/written,
the automatic address mode is repeated. In this time, the central controller displays [97 error].
(Power ON)
(Approx. 3 minutes)
[SET] is displayed on
main remote controller.
(Approx. 1 minute)
[SET] goes off.
(Repetition)
LED (D02) on
indoor unit P.C. board flashes
with 1Hz for approx. 10 seconds.
Reboot
(Reset)
[P31 error] (Sub indoor unit)
When the master unit of a group operation has detected [E03], [L03], [L07], or [L08] error, the sub unit of the
group operation detects [P31 error] and then it stops.
There is no display of the check code or alarm history of the main remote controller.
(In this model, the mode enters in automatic address set mode when the master unit has detected [E03], [L03],
[L07], or [L08] error.)
– 110 –
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10-2-6. Relational Graph ofTemperature Sensor Resistance Value andTemperature
TA sensor
TC,TCJ sensor
20
10
0
40
30
20
10
0
Caracteristics-1
Caracteristics-2
Resistance
Resistance
(kΩ)
(kΩ)
10 20 30 40 50 60
–10
0
10 20 30 40 50 60 70
Temperature [˚C]
Temperature [˚C]
TE, TO, TS sensor
Caracteristics-3
20
200
Resistance
Resistance
(kΩ)
(10˚C or higher)
10
0
(kΩ)
100
0
(10˚C or lower)
–10
0
10 20 30 40 50 60 70
Temperature [˚C]
TD sensor
200
100
0
20
Caracteristics-4
Resistance
(kΩ)
(50˚C or lower)
Resistance
(kΩ)
(50˚C or higher)
10
0
50
100
Temperature [˚C]
TH sensor
200
150
100
50
20
15
10
5
Caracteristics-5
Resistance
Resistance
(kΩ)
(kΩ)
0
0
–30 –20 –10
0
10 20 30 40 50 60 70 80 90 100
Temperature [˚C]
– 111 –
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11. REPLACEMENT OF SERVICE P.C. BOARD
11-1. Indoort Unit
<Note: when replacing the P.C. board for indoor unit servicing>
The nonvolatile memory (hereafter called EEPROM, IC503) on the indoor unit P.C. board before replacement
includes the model specific type information and capacity codes as the factory-set value and the important setting
data which have been automatically or manually set when the indoor unit is installed, such as system/indoor/group
addresses, high ceiling select setting, etc.
When replacing the P.C. board for indoor unit servicing, follow the procedures below.
After replacement completes, confirm whether the settings are correct by checking the indoor unit No., Group
master unit / sub unit settings and perform the cooling cycle confirmation through the trial operation.
<Replacement procedures>
CASE 1
Before replacement, the indoor unit can be turned on and the setting data can be read out by wired
remote control operation.
EEPROM data read out [1]
ò
Replacement of P.C. board for Indoor unit servicing and power on [2]
ò
Writing the read out EEPROM data [3]
ò
Power reset
(for all indoor units connected to the remote control when the group operation control is performed.)
CASE 2
Before replacement, the indoor unit cannot be turned on or the wired remote controller operation is
impossible due to trouble of the power supply circuit to the remote controller. (Defective P.C. board)
Replacement of EEPROM
Remove EEPROM installed on the P.C. board before replacement
and then replace it with EEPROM of the service P.C. board.
ò
Replacement & power ON for service P.C. board [2]
ò
Read-out of EEPROM data [1]
If reading-out is impossible, proceed to CASE 3.
ò
Replacement of EEPROM
Replace EEPROM again. (Set the original EEPROM to the service P.C. board.)
ò
Replacement & power ON for service P.C. board [2]
ò
Writing-in of the read-out EEPROM data [3]
Power reset
(for all indoor units connected to the remote controller when the group operation control is performed.)
CASE 3
The EEPROM before replacement is defective and the setting data cannot be read out.
Replacement & power ON for service P.C. board [2]
ò
Writing the setting data to EEPROM, such as high ceiling installation setting
and optional connection setting, etc., based on the customer information. [3]
ò
Power reset
(for all indoor units connected to the remote control when the group operation control is performed.)
– 112 –
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[1] Setting data read out from EEPROM
The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out.
SET
CL
TEST
Step 1 Push
,
and
button on the remote controller simultaneously for more than 4 seconds.
∗ When the group operation control is performed, the unit No. displayed for the first time is the header unit No.
At this time, the CODE No. (DN) shows “10 ”. Also, the fan of the indoor unit selected starts its operation
and the swing operation also starts if it has the louvers.
UNIT LOUVER
Step 2 Every time when the
button is pushed, the indoor unit No. under the group control is displayed in
order. Specify the indoor unit No. to be replaced.
1. Change the CODE No. (DN) to 10 → 01 by pushing
/
buttons for the temperature
setting. (this is the setting for the filter sign lighting time.)
At this time, be sure to write down the setting data displayed.
2. Change the CODE No. (DN) by pushing
/
buttons for the temperature setting.
Similarly, be sure to write down the setting data displayed.
3. Repeat the step 2-2 to set the other settings in the same way and write down the setting data as shown
in the table 1 (example).
∗ The CODE No. (DN) are ranged from “01 ” to “FF ”. The CODE No. (DN) may skip.
TEST
Step 3 After writing down all setting data, push
button to return to the normal stop status.
(It takes approx. 1 min until the remote controller operation is available again.)
CODE No. required at least
1. The CODE No. for the Indoor unit type and Indoor unit capacity are
DN
10
11
12
13
14
Contents
Type
required to set the rotation number setting of the fan.
2. If the system/indoor/group addresses are different from those before
replacement, the auto-address setting mode starts and the manual
resetting may be required again.
Indoor unit capacity
System address
Indoor unit address
Group address
(when the multiple units group operation including twin system.)
[2] P.C. Board for indoor unit servicing replacement procedures
Step 1 Replace the P.C. board to the P.C. board for indoor unit servicing.
On the new P.C. board, set the same setting of the jumper wire and setting of shortcut connection connec-
tor as those of the P.C. board before replacement.
Step 2 According to the system configuration, turn on the indoor unit following to the either methods shown below.
a) Single operation (Indoor unit is used as standalone.)
Turn on the indoor unit.
1. After completion of the auto-address setting mode (required time: approx. 5 min.), proceed to [3].
(System address = 1, Indoor unit address = 1, Group address = 0 (standalone) are automatically set.)
SET
CL
TEST
2. Push
,
and
buttons simultaneously for more than 4 seconds to interrupt the auto-address
setting mode, and proceed to [3]. (The unit No. “
” is displayed.)
b) Group operation (including twin system)
Turn on the indoor unit(s) with its P.C. board replaced to the P.C. board for indoor unit servicing, accord-
ing to either methods 1 or 2 shown below.
1. Turn on only the indoor unit with its P.C. board replaced. (Be sure to confirm the remote controller is
surely connected. If not, the operation [3] cannot be performed.)
Perform either methods 1 or 2 described in item a) above.
2. Turn on the multiple indoor units including the indoor unit with its P.C. board replaced.
• Twin 1 system only
• All group connections
After completion of the auto-address setting mode (required time: approx. 5 min.), proceed to [3].
∗ The header unit of the group may be changed by performing the auto-address setting.
Also, the system address/Indoor unit address of the indoor unit with its P.C. board replaced may be
assigned to the addresses (not used) other than those of the indoor units without its P.C. board replaced.
It is recommended to keep the information in advance, which cooling system the indoor unit belongs to
or whether the indoor unit works as the header unit or the follower unit in the group control operation.
– 113 –
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[3] Writing the setting data to EEPROM
The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values.
SET
CL
TEST
Step 1 Push
,
and
buttons on the remote controller simultaneously for more than 4 seconds.
∗ In the group control operation, the unit No. displayed for the first time is the header unit No.
At this time, the CODE No. (DN) shows “10 ”. Also, the fan of the indoor unit selected starts its operation
and the swing operation starts if it has the louvers.
(The unit No. “
” is displayed if the auto-address setting mode is interrupted in [2] step 2 a))
UNIT LOUVER
Step 2 Every time when
button is pushed, the indoor unit No. in the group control operation are displayed
in order.
(The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values.)
Specify the indoor unit No. with its P.C. board replaced to the P.C. board for indoor unit servicing.
(You cannot perform this operation if “
” is displayed.)
Step 3 Select the CODE No. (DN) can be selected by pushing the
/
button for the temperature setting.
• Set the indoor unit type and capacity.
The factory-set values shall be written to the EEPROM by changing the type and capacity.
1. Set the CODE No. (DN) to “10 ”. (without change)
2. Select the type by pushing
/
buttons for the timer setting.
(For example, 4-way Air Discharge Cassette Type is set to “0001”. Refer to table 2)
SET
3. Push
button.
(The operation completes if the setting data is displayed.)
4. Change the CODE No. (DN) to “11 ” by pushing
/
buttons for the temperature setting.
5. Select the capacity by pushing buttons for the timer setting.
/
(For example, 80 Type is set to “0012”. Refer to table 3)
SET
6. Push
button.
(The setting completes if the setting data are displayed.)
TEST
7. Return to the normal stop status by pushing
button.
(Approx. 1 minute is needed to start operation of the remote controller.)
Step 4 Write the on-site setting data to the EEPROM, such as address setting, etc. Perform the steps 1 and 2
above again.
Step 5 Change the CODE No. (DN) to “01 ” by pushing
/
buttons for the temperature setting.
(this is the setting for the filter sign lighting time.)
Step 6 Check the setting data displayed at this time with the setting data put down in [1].
1. If the setting data is different, modify the setting data by pushing
the data put down in [1].
/
buttons for the timer setting to
The operation completes if the setting data is displayed.
2. If the data is the same, proceed to next step.
Step 7 Change the CODE No. (DN) by pushing
As described above, check the setting data and modify to the data put down in [1].
Step 8 Repeat the steps 6 and 7.
Step 9 After the setting completes, push
/
buttons for the temperature setting.
TEST
button to return to the
normal stop status. (It takes approx. 1 min until the remote control
operation is available again.)
<Fig. 1 RBC-AMT32E>
∗ The CODE No. (DN) are ranged from “01 ” to “FF ”.
The CODE No. (DN) is not limited to be serial No.
SET
Even after modifying the data wrongly and pushing
button,
it is possible to return to the data before modification by
CL
pushing
button if the CODE No. (DN) is not changed.
3 6 5 1 4 2
– 114 –
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Table 1
DN
01
02
03
Item
Filter sign lighting time
Setting data
Factory-set value
Depending on Type
Filter pollution leve
0000: standard
Central control address
0099: Not determined
0002: +2°C
(flooring installation type: 0)
06
Heating suction temperature shift
OF
10
11
12
13
14
Cooling only
0000: Heat pump
Type
Depending on model type
Depending on capacity type
0099: Not determined
0099: Not determined
0099: Not determined
Indoor unit capacity
System address
Indoor unit address
Group address
Temperature range of cooling/heating
automatic SW control point
1E
0003: 3 deg (Ts ± 1.5)
28
2b
31
32
40
60
Power failure automatic recovery
0000: None
Thermo output SW (T10
)
0000: Thermo ON
0000: Not available
0000: Body sensor
0003: Humidifier ON + Pump OFF
0000: Available
ƒ
Ventilation fan (standalone)
Sensor SW (Selection of static pressure)
Humidifier control (+ drain pump control)
Timer setting (wired remote controller)
Table 2. Type: CODE No. 10
Setting data
Type
Type name abb.
0023
Concealed Duct High Static Type
RAV-SM∗∗∗DT-A
Table 3. Indoor unit capacity: CODE No. 11
Setting data
0000∗
Type
Disable
140
0017
0018
160
∗ EEPROM initial value on the P.C. board for indoor unit servicing.
– 115 –
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12. SETUP AT LOCAL SITE AND OTHERS
12-1. Indoor Unit
12-1-1. Test Run Setup on Remote Controller
<Wired remote controller>
TEST
1. When pushing
button on the remote controller for 4 seconds or more, “TEST” is displayed on LC display.
ON / OFF
Then push
button.
• “TEST” is displayed on LC display during operation of Test Run.
• During Test Run, temperature cannot be adjusted but air volume can be selected.
• In heating and cooling operation, a command to fix the Test Run frequency is output.
• Detection of error is performed as usual. However, do not use this function except case of Test Run
because it applies load on the unit.
2. Use either heating or cooling operation mode for [TEST].
NOTE : The outdoor unit does not operate after power has been turned on or for approx. 3 minutes after
operation has stopped.
TEST
3. After a Test Run has finished, push
button again and check that [TEST] on LC display has gone off.
(To prevent a continuous test run operation, 60-minutes timer release function is provided to this remote
controller.)
12-1-2. Forced Defrost Setup of Remote Controller (For wired remote controller only)
(Preparation in advance)
TEST
SET
CL
1
Push
+
+
buttons simultaneously for 4 seconds or more on the remote controller.
(Push buttons while the air conditioner stops.)
The first displayed unit No. is the master indoor unit address in the group control.
UNIT
2
Every pushing
other.
button, the indoor unit No. in the group control is displayed one after the
Select a main indoor unit (outdoor unit is connected) which is to be defrosted. In this time, fan and louver of
the selected indoor unit operate.
TEMP.
3
4
5
6
Using the set temperature
buttons, specify the item code (DN) 8C.
TIME
Using the timer time
buttons, set time to data 0001. (0000 at shipment)
SET
Push
button. (OK if indication lights)
TEST
Pushing
button returns the status to the normal stop status.
(Practical operation)
ON / OFF
• Push ON/OFF
Key.
• Select the HEAT mode.
• After while, the forced defrost signal is sent to the outdoor unit and then the outdoor unit starts defrost operation.
(The forced defrost operation is performed for Max. 12 minutes.)
• After defrost operation finished, the operation returns to the heating operation.
To execute the defrost operation again, start procedure from above item
(If the forced defrost operation was executed once, setting of the above forced defrost operation is cleared.)
1
.
– 116 –
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12-1-3. LED Display on P.C. Board
1. D02 (Red)
• Goes on at the same time when power was turned on (Main microcomputer operates and goes on.)
• Flashes with 1-second interval (every 500ms): When EEPROM is not provided or writing was an error.
• Flashes with 10-seconds interval (every 5S): When the mode is DISP
2. D203 (Red)
• Goes on when power is supplied to remote controller (Lights on the hardware)
12-1-4. Function Selection Setup
<Procedure> Perform setting while the air conditioner stops.
TEST
SET
CL
1
Push
+
+
buttons simultaneously for 4 seconds or more.
The first displayed unit No. is the master indoor unit address in the group control.
In this time, fan and louver of the selected indoor unit operate.
ò
button (button at left side), the indoor unit No. in the group control is
displayed one after the other. In this time, fan and louver of the selected indoor unit only operate.
UNIT LOUVER
2
Every pushing
ò
TEMP.
3
4
5
Using the set temperature
buttons, specify the item code (DN).
ò
TIME
Using the timer time
buttons, select the set data.
ò
button. (OK if indication lights)
SET
Push
• To change the selected indoor unit, proceed to Procedure
2
.
• To change item to be set up, proceed to Procedure
3
.
ò
button returns the status to the normal stop status.
TEST
6
Pushing
TEMP.
ON / OFF
TIMER SET
TIME
FAN
SAVE
MODE
VENT
3
6
4
5
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
1
2
<Operation procedure>
1 2 3 4 5 6 END
– 117 –
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Function selection item No. (DN) list
DN
Item
Contents
At shipment from factory
0000: None
0001: 150H
01
Filter sign lighting time
0002: 2500H
0004: 10000H
0003: 5000H
0005: Clogging sensor used
According to type
0001: No.1 unit
0099: Undecided
to
to
0064: No.64 unit
03
06
10
Central control address
Heating suction temp. shift
Type
0099: Undecided
0000: No shift
0002: +2°C
0001: +1°C
0010: +10°C
(Up to +6 is recommended.)
0002: +2°C
(Floor type 0000: 0°C)
0000: (1-way air discharge cassette)
0001: (4-way air discharge cassette) to 0037
According to model type
11
12
13
Indoor unit capacity
Line address
0000: Undecided
0001: No.1 unit
0001: No.1 unit
0000: Individual
0001 to 0034
According to capacity type
0099: Undecided
to
to
0030: No.30 unit
Indoor unit address
0064: No.64 unit
0099: Undecided
0001: Master unit in group
14
Group address
0099: Undecided
0002: Follower unit in group
In automatic cooling/heating, temp.
0000: 0 deg to
0010: 10 deg
0003: 3 deg
(Ts±1.5)
1E width of cool → heat, heat →
(Cool/heat are reversed with ± (Data value) /
2 against the set temperature)
cool mode selection control point
28
Automatic reset of power failure
0000: None
0001: Provided
0000: None
0000: Filter input
0002: Humidifier input
0001: Alarm input
2A Selection of option / error input (CN70)
0002: Humidifier
(Air cleaner, etc.)
Selection of thermostat output
(T10 ƒ )
0000: Indoor thermostat ON
0001: ON receiving output of outdoor compressor
2b
0000: Thermostat ON
31
32
Fan (Single operation)
Sensor selection
0000: Impossible
0000: Body TA sensor
0000: No control
0001: Possible
0000: Impossible
0001: Remote controller sensor
0000: Body sensor
Humidifier control
(+Drain pump control)
(This function is not provided.)
0001: Humidifier + Vaporizing type (Pump ON)
0002: Humidifier + Supersonic type
(Pump ON when specified time elapsed)
0003: Humidifier + Natural drain type (Pump OFF)
0003: Humidifier ON
Pump OFF
40
60
Timer setting (Wired remote controller) 0000: Operable
0001: Operation prohibited
0100: 100%
0000: Operable
0075: 75%
C2 Current demand X% to outdoor unit
0050: 50%
to
Existence of remote controller save
function
D0
0000: Invalid (Impossible)
0001: Valid (Possible)
0001: Valid (Possible)
∗ Restriction ratio setting for save operation (DN code No. [C2]) can be set/changed from the normal DN setup
(Detail DN setup).
– 118 –
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12-1-5. Wiring and Setting of Remote Controller Control
2-remote controller control
(Setup method)
(Controlled by 2 remote controllers)
One or multiple indoor units are controlled by
2 remote controllers.
(Max. 2 remote controllers are connectable.)
This control is to operate 1 or multiple indoor units
are operated by 2 remote controllers.
(Max. 2 remote controllers are connectable.)
• When connected 2 remote controllers
operate an indoor unit
<Wired remote controller>
How to set wired remote controller
as sub remote controller
Remote controller
switch (Master)
Remote controller
switch (Sub)
Change DIP switch inside of the rear side of the
remote controller switch from remote controller
master to sub. (In case of RBC-AMT32E)
Sold
separately
Sold
separately
A B
A B
Remote controller (Inside of the rear side)
Remote controller
cables (Procured locally)
Terminal block for
remote controller cables
1 2
Sub remote
controller
A B
Master remote
controller
Indoor unit
1 2 3
1
2
DIP switch
1
2
1 2 3
Outdoor unit
[Operation]
• When connected 2 remote controllers
operate the twin
1. The operation contents can be changed by Last-
push-priority.
2. Use a timer on either Master remote controller or
Sub remote controller.
Remote controller
switch (Master)
Remote controller
switch (Sub)
Remote controller
inter-unit wire
(Procured locally)
Sold
Sold
separately
separately
A B
A B
Terminal block for
remote controller cables
A B
A B
Indoor unit 1
1 2 3
Indoor unit 2
1 2 3
1 2 3
Inter-unit wiring
between indoor units
(Procured locally)
Outdoor unit
– 119 –
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12-1-6. Monitor Function of Remote Controller Switch
n Calling of sensor temperature display
<Contents>
Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor
mode from the remote controller.
<Procedure>
CL
TEST
1
Push
+
buttons simultaneously for 4 seconds to
call the service monitor mode.
The service monitor goes on, the master indoor unit No. is
displayed at first and then the temperature of item code 00 is
displayed.
TEMP.
ON / OFF
ò
TEMP.
TIMER SET
TIME
FAN
SAVE
MODE
VENT
2
Push temperature set
buttons and then change
the item code of data to be monitored.
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
The item code list is shown below.
2 4 1
<Operation procedure>
3
1 2 3 4
Returned to usual display
Item code
Data name
Room temperature
Unit
Item code
Data name
Unit
01
°C
60
61
Outdoor heat exchanger (Coil) temperature (TE)
Outside temperature (TO)
°C
°C
(Remote controller)
02
03
Indoor suction temperature (TA)
°C
°C
62
Compressor discharge temperature (TD)
Compressor suction temperature (TS)
Heat sink temperature (THS)
°C
Indoor heat exchanger (Coil)
temperature (TCJ)
63
°C
65
°C
04
Indoor heat exchanger (Coil)
temperature (TC)
°C
6A
Operation current (× 1/10)
A
∗ 6D
∗ 70
∗ 72
∗ 73
F1
Outdoor heat exchanger (Coil) temperature (TL)
Compressor operation frequency
°C
∗ 07
∗ F2
F3
Indoor fan revolution frequency
rpm
rps
rpm
rpm
×100h
Indoor fan calculated operation time ×100h
Outdoor fan revolution frequency (Lower)
Outdoor fan revolution frequency (Upper)
Compressor calculated operation time
Filter sign time
×1h
°C
∗ F8
Indoor discharge temperature*1
Item with ∗ marks are not provided to the Concealed Duct Type.
ò
button to select the indoor unit to be monitored.
Each data of the indoor unit and its outdoor units can be monitored.
UNIT LOUVER
3
4
Push
ò
button returns the status to the usual display.
TEST
Pushing
∗1 The indoor discharge temperature of item code [F8] is the estimated value from TC or TCJ sensor.
Use this value to check discharge temperature at test run.
(A discharge temperature sensor is not provided to this model.)
• The data value of each item is not the real time, but value delayed by a few seconds to ten-odd seconds.
• If the combined outdoor unit is one before 2 or 3 series, the outdoor unit data [6D], [70], [72] and [73]
are not displayed.
– 120 –
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n Calling of error history
<Contents>
The error contents in the past can be called.
<Procedure>
SET
TEST
TEMP
ON / OFF
1
Push
+
buttons simultaneously for
4 seconds or more to call the service check mode.
TIMER SET
TIME
FAN
SAVE
MODE
VENT
Service Check goes on, the item code 01 is displayed, and
then the content of the latest alarm is displayed. The number
and error contents of the indoor unit in which an error occurred
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
2 are displayed.
In order to monitor another error history, push the set
temperature buttons to change the error
history No. (Item code).
/
2 3 1
<Operation procedure>
Item code 01 (Latest) → Item code 04 (Old)
NOTE : 4 error histories are stored in memory.
1 2 3
TEST
3
Pushing
button returns the display to usual display.
Returned to usual display
REQUIREMENT
CL
Do not push
button, otherwise all the error histories of the indoor unit are deleted.
(Group control operation)
In a group control, operation of maximum 8 indoor units can be controlled by a remote controller.
The indoor unit connected with outdoor unit (Individual/Master of twin) controls room temperature according to
setting on the remote controller.
<System example>
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
Master
2-1
1-1
3-1
4-1
7-1
Max. 8 units
Remote controller
1. Display range on remote controller
The setup range (Operation mode/Air volume select/Setup temp) of the indoor unit which was set to the
master unit is reflected on the remote controller.
1) Concealed duct (RAV-SMXXXDT) is not set up on the master unit.
• If the Concealed duct is the master unit:
Operation mode: [Cooling/Heating AUTO] [HEAT] [COOL] [FAN] and no [DRY]
Air volume select: [HIGH]
• When the operation mode is [DRY], [FAN] stops in duct models.
2. Address setup
Turn on power of the indoor unit to be controlled in a group within 3 minutes after setting of automatic address.
If power of the indoor unit is not turned on within 3 minutes (completion of automatic address setting), the
system is rebooted and the automatic address setting will be judged again.
1) Connect 3 In/Out cables surely.
2) Check line address/indoor address/group address of the unit one by one.
3) The unit No. (line/indoor gout address) which have been set once keep the present status as a rule if the
unit No. is not duplicated with one of another unit.
– 121 –
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n Indoor unit power-ON sequence
• The unit without power feed waits entirely
→ Waiting status is released by system start
• Reboot when power is fed on the way
Power ON
<By indoor unit
which receives power feed from outdoor unit>
<Automatic
address judgment>
Not normal
NO
3 minutes elapse
Gr construction check
YES
Normal
∗ Gr normal
1) There is no duplicated indoor unit address.
2) There is no invalid indoor unit address.
3) Individual unit and master / sub units
are not intermingled.
4) Only a unit for individual.
5) A master indoor unit and 1 or more
sub indoor units for Gr.
System start
Automatic address starts.
(Approx. 1 minute up to finish)
<Initial communication>
Outdoor model distinction (10 seconds) (Indoor unit)
Twin Master / sub distinction (Indoor unit)
Gr construction, louver information (Remote controller)
<Cautions at test run>
• Power supply/Indoor/Outdoor serial and Gr wiring: OK
• Powers of all indoor units are turned on within 3 minutes.
• Reception time for remote controller operation
(After power supply was turned on)
1) When address is OK : Approx. 50 seconds
2) In AUTO address
: Approx. 4 to 5 minutes
Remote controller operation is available.
(Approx. 50 seconds after power-ON)
<Usual regular
communication>
Regular communication between indoor units (Every 30 seconds) (Master / sub)
Regular communication on the identical pipe (every 30 seconds) (Twin Header / sub)
(When the above status changes, immediately communicates.)
(Repetition)
• In a group operation, if the indoor unit which was fed power after judgment of automatic address cannot
receive regular communication from the master unit and regular communication on identical pipe within
120 seconds after power was turned on, it reboots (system reset).
→ The operation starts from judgment of automatic address (Gr construction check) again.
(If the address of the master unit was determined in the previous time, the power fed to the master unit and
reboot works, the master unit may change though the indoor unit line address is not changed.)
– 122 –
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12-2. Setup at Local Site / Others
Model name:TCB-PCNT30TLE2
12-2-1. TCC-LINK Adapter (For TCC-LINK Central Control)
1. Function
This model is an optional P.C. board to connect the indoor unit to TCC-LINK (Central controller).
2. Microprocessor block diagram
Indoor unit
Central controller
TCC-LINK adapter P.C. board
CN40
CN050
Indoor control
P.C. board
CN041
CN51
TCC-LINK
communication circuit
Terminal
resistance
SW01
MCC-1440
Terminal block
(A, B)
TCC-LINK
Communication units
Communication distance : 2000 m
: Total 64 units
Remote controller
3. TCC-LINK wiring connection
CAUTION
1) When controlling customized setup collectively, TCC-LINK adapter (This option) is required.
2) In case of group operation or twin/triple operation, the adapter is necessary to be connected to the main unit.
3) Connect the central control devices to the central control system wiring.
4) When controlling collectively customized setup only, turn on only Bit 1 of SW01 of the least line of the system
address No. (OFF when shipped from the factory)
∗ In case of customized setup, the address is necessary to be set up again from the wired remote
controller after automatic addressing.
Central control device
Central control device
Central control devices: Max. 10 units
U1 U2
U3 U4
U1 U2
U3 U4
Refrigerant line 1
Refrigerant line 2
Refrigerant line 3
1 2 3
Refrigerant line 4
1 2 3
Outdoor unit
1 2 3
1 2 3
Indoor/outdoor inter-unit wire (AC230V serial)
Central control system wiring
Caution 3
* Wiring for No.1 and 2 only
Maater
unit
Sub
unit
Sub unit
Maater unit
Sub unit
1 2 3
Indoor unit
U3 U4 1 2 3
A B
U3 U4 1 2 3
1 2 3
1 2 3
A B
U3 U4 1 2 3
A B
A B
A B
A B
TCC-LINK adapter
This product
(
)
Caution 1
Caution 2
sold separately
Remote controller
wiring
Remote controller
Remote controller
Remote controller
Remote controller
Group operation (Max. 8 units)
Twin/Triple operation (Example of triple)
Indoor units in all refrigerant lines: Max. 64 units
[If mixed with multi model (Link wiring), multi indoor units are included.]
* However group sub units and twin/triple sub units of customized setup are not included in number of the units.
– 123 –
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4. Wiring specifications
• Use 2-core with no polar wire.
• Match the length of wire to wire length of the central
control system.
No. of wires
Size
Up to 1000m: twisted wire 1.25mm2
Up to 2000m: twisted wire 2.0mm2
If mixed in the system, the wire length is lengthened
with all indoor/outdoor inter-unit wire length at side.
2
• To prevent noise trouble, use 2-core shield wire.
• Connect the shield wire by closed-end connection and apply open process (insulating process) to the last
terminal. Ground the earth wire to 1 point at indoor unit side. (In case of central controlling of digital inverter
unit setup)
CAUTION
1) Closed-end connection of shield wire (Connect all the connecting parts of each indoor unit)
2) Apply open process to the last terminal (insulating process).
3) Ground earth wire to 1 point at indoor unit side.
Central control device
U1 U2
Caution 2
Caution 1
Caution 3
Central control system wiring
Outdoor unit
1 2 3
1 2 3
1 2 3
1 2 3
: TCC-LINK adapter
(This option)
Master
unit
U3 U4 1 2 3
Sub unit
1 2 3
Sub unit
Master unit
Sub unit
1 2 3
Indoor unit
U3 U4 1 2 3
A B
1 2 3
U3 U4 1 2 3
A B
A B
A B
A B
A B
Earth terminal
Remote controller
Remote controller
Remote controller
Remote controller
(Group operation)
(Triple operation)
5. P.C. board switch (SW01) setup
When performing collective control by DI or SDI only, the setup of terminator is necessary.
• Using SW01, set up the terminator.
• Set up the terminator to only the adapter connected to the indoor unit of least line address No.
Central control device
Central control device
Central control devices: Max. 10 units
U1 U2
U3 U4
U1 U2
U3 U4
Refrigerant line 1
Refrigerant line 2
1 2 3
Refrigerant line 3
1 2 3
Refrigerant line 4
1 2 3
Outdoor unit
1 2 3
Indoor/outdoor inter-unit wire (AC230V serial)
Central control system wiring
* Wiring for No.1 and 2 only
Master
unit
Sub
unit
Sub unit
Master unit
Sub unit
1 2 3
Indoor unit
U3 U4 1 2 3
U3 U4 1 2 3
1 2 3
1 2 3
A B
U3 U4 1 2 3
A B
A B
A B
A B
A B
TCC-LINK adapter
This product
Remote controller wiring
(
)
sold separately
Remote controller
Remote controller
Remote controller
Remote controller
Remote controller
Group operation (Max. 8 units)
Twin/Triple operation (Example of triple)
4
Line address
SW01 Bit 1
SW01 Bit 2
Remarks
1
ON
OFF
2
OF
OFF
OF
OFF
(OFF at shipment from factory)
(OFF at shipment from factory)
Turn SW01 Bit 1 to ON. As status shipped from factory
As status shipped from factory
(Reference) Setup contents of switch
SW01
Terminator
Remarks
Bit 1
OFF
ON
OFF
ON
Bit 1
OFF
OFF
ON
None
100Ω
75Ω
Mixed with multi (Link wiring) at shipment from factory
Central control by digital inverter only
Spare
Spare
ON
43Ω
– 124 –
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6. External view of P.C. board assembly
Terminator (SW01)
52
85
7. Address setup
In addition to set up the central control address, it is necessary to change the indoor unit number.
(Line/Indoor/Group address). For details, refer to TCC-LINK Adapter Installation Manual.
12-3. How to Set up Central Control Address Number
When connecting the indoor unit to the central control remote controller using TCC-LINK adapter, it is neces-
sary to set up the central control address number.
• The central control address number is displayed as the line No. of the central control remote controller.
<Procedure> Perform setup while the unit stops.
VENT
TEST
1
Push
When group control is executed, first the unit No.
control are selected. In this time, fans of all the selected indoor units are turned on. (Fig. 1)
+
buttons for 4 seconds or more.
is displayed and all the indoor units in the group
UNIT LOUVER
(Keep
displayed status without pushing
button.)
In case of individual remote controller which is not group-controlled, Line address and Indoor unit address
are displayed.
TEMP.
2
3
Using temperature setup
buttons, specify item code 03.
TIME
Using timer time
buttons, select the setup data.
The setup data is shown in the table below (Table 1).
SET
4
5
Push
button. (OK if display goes on.)
(Fig.1)
• To change the item to be set up, return to Procedure 2.
TEST
Push
button.
The status returns to usual stop status.
(Table 1)
TEMP.
ON / OFF
Setup data
Central control address No.
TIMER SET
FAN
SAVE
MODE
VENT
2
1
0001
0002
0003
:
1
2
3
TIME
3
1
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
:
0064
64
0099
Unset (Setup at shipment from factory)
4
5
– 125 –
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How to confirm the central control address (New function for AMT32 remote controller)
<Procedure> It can be confirmed even during operation or stopping.
UNIT LOUVER
1
2
Push
button for 4 seconds or more.
ò
In the frame at left side of the remote controller screen, the lighting set contents are
displayed.
During unset time, 0099 (At shipment from factory) is displayed.
ò
After lighting display for 3 seconds, the display automatically disappears.
3
If any button is pushed during display, immediately the display disappears and then the pushed button is
displayed.
– 126 –
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13. ADDRESS SETUP
13-1. Address Setup Procedure
When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor
unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address
setup completes with power-ON of the outdoor unit.The operation of the remote controller is not accepted while
automatic address works. (Approx. 4 to 5 minutes)
Setup of line address of outdoor unit,
indoor unit address, and group address
Completion of cabling work
NO
Do you arbitrarily set the
indoor unit address?
YES
NO
NO
(MANUAL)
Is refrigerant line 1 line?
YES
Is group control performed?
YES
(To AUTO address mode)
Do you change setting after
automatic setting at the first time?
YES
Connect one remote controller with
one indoor unit (1 : 1) tentatively with
communication cable.
Turn on power of outdoor unit.
Turn on power of outdoor unit.
Turn on power of outdoor unit.
After completion of address
setup, change is to arbitral
address/group manually.
Setup of automatic
address finishes within
4 to 5 minutes.
(
)
Set to all indoor units one by one.
(
)
END
• When the following addresses are not stored in the neutral memory (IC503) on the indoor P.C. board, a test
run operation cannot be performed. (Unfixed data at shipment from factory)
Item code Data at shipment
Setup data range
0001 (No. 1 unit) to 0064 (No. 64 unit)
Line address
12
13
0099
0099
0001 (No. 1 unit) to 0064 (No. 64 unit)
Max. value of indoor units in the identical refrigerant line
Indoor unit address
0000 : Individual (Indoor units which are not controlled in a group)
0001 : Master unit (1 indoor unit in group control)
Group address
14
0099
0002 : Sub unit (Indoor units other than master unit in group control)
– 127 –
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13-2. Address Setup & Group Control
<Terminology>
Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64)
Group address : 0 = Single (Not group control)
1 = Master unit in group control
2 = Sub unit in group control
Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/from
the remote controllers and sub indoor units.
(* It has no relation with an indoor unit which communicates serially with the outdoor units.)
The operation mode and setup temperature range are displayed on the remote controller
LCD. (Except air direction adjustment of louver)
Sub unit (= 2)
: Indoor units other than master unit in group operation
Basically, sub units do not send/receive signals to/from the remote controllers.
(Except errors and response to demand of service data)
Header unit (Representative unit) (Master Twin)
: This unit communicates with the indoor unit (follower) which serial-communicates with the
outdoor units and sends/receives signal (Command from compressor) to/from the outdoor
units as the representative of the cycle control in the indoor units of the identical line address
within the minimum unit which configures one of the refrigerating cycles of Twin.
Follower unit (Subordinate unit) (Sub Twin)
: Indoor units excluding the header unit in Twin
This unit communicates with (Header) indoor unit in the identical line address and performs
control synchronized with (Header) indoor unit.
This unit does not perform the signal send/receive operation with the outdoor units. :
No judgment for serial signal error.
13-2-1. System Configuration
1. Single
2. Twin
Outdoor
1-1
Individual
1-1
Master/Header
1-2
Sub/Follower
Indoor
(Master/Header)
Remote controller
3. Triple
1-1
Master/Header
1-2
Sub/Follower
1-3
Sub/Follower
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4. Single group operation
• Each indoor unit controls the outdoor unit individually.
2-1
Sub/Header
1-1
Sub/Header
4-1
3-1
Sub/Header
8-1
Sub/Header
Master/Header
5. Multiple groups operation (Manual address setting)
2-1
Sub/Header
1-1
Sub/Header
1-2
3-1
3-2
3-3
Sub/Follower
Sub/Follower
Master/Header
Sub/Follower
• Header unit: The header unit receives the indoor unit data (thermo status) of the follower
(Without identical line address & indoor/outdoor serial) and then finally controls the outdoor
compressor matching with its own thermo status.
The header unit sends this command information to the follower unit.
• Follower unit: The follower unit receives the indoor unit data from the header (With identical line address &
indoor/outdoor serial) and then performs the thermo operation synchronized with the header
unit. The follower unit sends own thermo ON/OFF demand to the header unit.
(Example)
No. 1-1 header unit sends/receives signal to/from No. 1-2 and No. 1-3 follower units.
(It is not influenced by the line 2 or 3 address indoor unit.)
– 129 –
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13-2-2. Automatic Address Example from Unset Address (No miswiring)
1. Standard (One outdoor unit)
1) Single
2) Twin
3) Triple
(1-1)
(1-2)
(1-1)
1-2
(1-2)
(1-3)
1-1
Individual
1-2
Master/Header
1-1
1-3
1-1
Sub/Follower
Sub/Header
Master/Follower
Sub/Follower
(Master/Header)
Only turning on source power supply (Automatic completion)
2. Group operation
(Multiple outdoor units = Multiple indoor units with serial communication only, without twin)
2-1
Sub/Header
1-1
Sub/Header
3-1
8-1
Sub/Header
Master/Header
(Max. : 8 units)
Only turning on source power supply (Automatic completion)
3. Multiple groups operation
Single
Twin
Triple
2-1
Sub/Header
1-1
Sub/Header
2-3
3-1
Sub/Header
3-3
1-2
Sub/Follower
Master/Follower
Sub/Follower
Change is necessary
Manually change addresses of the multiple follower units
XXXXXXXsimultaneously from the remote controller.XXXXXXX
2-1
1-1
1-2
3-1
3-2
3-3
– 130 –
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13-3. Address Setup (Manual Setting from Remote Controller)
In case that addresses of the indoor units will be determined
(Example of 2-lines cabling)
(Real line: Cabling, Broken line: Refrigerant pipe)
prior to piping work after cabling work
• Set an indoor unit per a remote controller.
• Turn on power supply.
Outdoor Outdoor
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
Indoor
A B
Indoor
A B
Indoor
A B
Indoor
A B
1
2
2
2
1
2
2
2
2
Line address → 1
Indoor unit address → 1
Group address → 1
SET
CL
TEST
1
2
Push
+
+
buttons simultaneously
A B
for 4 seconds or more.
Remote controller
(← Line address)
Using the temperature setup
set 12 to the item code.
For the above example, perform setting by
connecting singly the wired remote controller
without remote controller inter-unit cable.
/
buttons,
Group address
Individual : 0000
3
4
5
Using timer time
/
buttons, set the line address.
Master unit : 0001
In case of group control
SET
Sub unit
: 0002
Push
button. (OK when display goes on.)
(← Indoor unit address)
Using the temperature setup
/
buttons, set 13 to the item code.
6
7
8
Using timer time
/
buttons, set 1 to the line address.
SET
Push
button. (OK when display goes on.)
(← Group address)
Using the temperature setup
/
buttons, set 14 to the item code.
9
Using timer time
/
buttons, set 0000 to Individual, 0001 to Master unit, and 0002 to sub unit.
SET
10
11
Push
button. (OK when display goes on.)
TEST
Push
button.
Setup completes. (The status returns to the usual stop status.)
TEMP.
ON / OFF
TIMER SET
TIME
FAN
SAVE
MODE
VENT
2, 5, 8
3, 6, 9
END 11
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
4, 7, 10
1
<Operation procedure>
1 2 3 4 5 6 7 8 9 10 11 END
– 131 –
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n Confirmation of indoor unit No. position
1. To know the indoor unit addresses though position of the indoor unit body is recognized
• In case of individual operation (Wired remote controller : indoor unit = 1 : 1)
(Follow to the procedure during operation)
<Procedure>
ON / OFF
1
2
Push
Push
button if the unit stops.
button.
UNIT LOUVER
Unit No. 1-1 is displayed on LCD.
TEMP.
ON / OFF
(It disappears after several seconds.)
1
TIMER SET
TIME
FAN
SAVE
MODE
VENT
The displayed unit No. indicate line address and
indoor unit address.
Operation
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
(When other indoor units are connected to the
identical remote controller (Group control unit), other
unit numbers are also displayed every pushing
UNIT LOUVER
button.
2
<Operation procedure>
END
1 2
2. To know the position of indoor unit body by address
• To confirm the unit No. in the group control
(Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.)
<Procedure>
The indoor unit numbers in the group control are
successively displayed, and fan, louver, and drain pump
of the corresponding indoor unit are turned on.
(Follow to the procedure during operation)
VENT
TEST
1
Push
4 seconds or more.
and
buttons simultaneously for
TEMP.
ON / OFF
TIMER SET
TIME
FAN
SAVE
MODE
VENT
• Unit No.
is displayed.
1
3
• Fans and louvers of all the indoor units in the
group control operate.
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
UNIT LOUVER
2
Every pushing
in the group control are successively displayed.
button, the unit numbers
2
• The unit No. displayed at the first time indicates the
master unit address.
<Operation procedure>
• Fan and louver of the selected indoor unit only
operate.
END
1 2 3
TEST
3
Push
button to finish the procedure.
All the indoor units in the group control stop.
– 132 –
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14. DETACHMENTS
14-1. Indoor Unit
REQUIREMENT
• At the service replacing time of the heat exchanger, the following tools are necessary.
Prepare them before the service work.
• Necessary tools: Plus screwdriver, monkey wrench, spanner, etc
CAUTION
• Be sure to place the heat exchanger at safe and flat place and then start the work.
• Necessarily put gloves when starting the work. Working with the naked hands may cause injury on the hands.
1. Decomposition drawing for the parts replacement of heat exchanger and drain pan
1
8
5
7
2
4
6
9
3
6
2. How to replace the parts
No.
Work procedure
Remove the top plate.
Note)
Explanatory drawing
1
Top plate
Remove the top plate carefully so
that corners of the foaming part of
the inner plate are not chipped off
by being caught.
Foaming part
– 133 –
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2. How to replace the parts (Continued)
No.
Work procedure
Remove the foaming part.
Note)
Explanatory drawing
2
Foaming part
Remove the foaming part
carefully so that corners of the
foaming part of the inner plate
are not chipped off by being
caught.
Remove the right side plates
(2) and (3).
3
Note)
Remove the side plates so as
not to damage the pipe cover.
Right side plate (2)
Right side plate (3)
Take off the shield plate from
the heat exchanger.
4
Shield plate
Pull up the heat exchanger.
5
P
i
i
p
p
e
e
fixing bracket at liquid side 2
Foaming part
1) Take off the pipe fixing
bracket at liquid side.
Note)
Take off the bracket and heat
exchanger carefully so that
insulator materials of the
foaming part and side plates
are not chipped off.
Heat exchanger
– 134 –
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2. How to replace the parts (Continued)
No.
Work procedure
Explanatory drawing
Take off the pipe fixing bracket
(1) and the drain shield plate.
6
Pipe fixing bracket (1)
Drain shield plate
Remove the left side plate.
7
Left side plate
Remove the inner foaming plate
and the insulator material.
8
Fan base
1) Pull off the insulator mate-
rial between the drain pan
and the mounting plate.
2) Take off the inner foaming
which is fit into between the
fan base and the drain pan.
Inner foaming plate
Insulator
material
Note)
Remove them carefully so that
corners of the inner foaming part
are not chipped off by being
caught.
Drain pan
Remove the drain pan.
9
Note)
Remove the drain pan carefully
so that the foaming part or
drain socket part of the drain
pan are not chipped off or
damaged.
Drain pan
– 135 –
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REQUIREMENT
• At the service replacing time of the fan motor, the following tools are necessary.
Prepare them before the service work.
• Necessary tools:
Plus screwdriver, L-shape hexagonal wrench (For ØM8mm (Face to face 4mm)),
ratchet wrench (For Ø6mm nut (Face to face 10mm)), monkey wrench, spanner, etc.
CAUTION
• The weight of the fan motor which is mounted on this product is heavy (Approx. 20kg) (including peripheral parts).
Therefore perform the service work with great care; otherwise an excessive work may cause backache.
• Necessarily put gloves when starting the work. Working with the naked hands may cause injury on the hands.
• When taking out the fan motor from the main unit and put it tentatively in the ceiling and others, set it at a
place durable the motor weight; otherwise a fall may be caused.
3. Decomposition drawing for the parts replacement of fan motor
8
7
6
5
3
2
1
4
4. How to replace the parts
No.
Work procedure
Explanatory drawing
Remove the electric parts cover and then
remove 9P connector of the motor lead wire
which is connected inside of the electric
parts box.
1
9P connector
Note)
1) Do not remove other cords than 9P
connector from the terminal block.
2) Keep the electric parts cover in the
empty space.
Electric parts cover
– 136 –
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4. How to replace the parts (Continued)
No.
Work procedure
Remove the electric parts box.
Note)
Explanatory drawing
2
• When keeping the electric parts box, be
sure not to damage or take off the sensor
lead wire connected to the main unit.
Motor lead wire
Remove the right side plates (1) and (2).
3
1) First remove the right side plate (2) and
then the right side plate (1).
Note)
• After removing the right side plate (1), do
not tear or put out the bushing when
pulling off the motor lead wire through
bushing.
Right side plate (2)
Right side plate (1)
Motor lead wire
Remove the fan case (Side face) and the
mounting leg.
4
1) First remove the mounting leg fixed to
the fan case (Side face).
2) Next remove the fan case (Side face).
Note)
• When taking out the fan case (Side face),
do not damage the foaming parts.
Mounting leg
Foaming parts
Fan case (Side face)
Remove the Silocco fan.
5
1) When removing the Silocco fan, loosen
the set screw which fixes it to the fan
motor shaft part, pull it toward you and
then remove it from the shaft.
L-shape hexagonal wrench
(Face to face 4mm)
Set screw
Silocco fan
Remove the fan case (Main unit).
6
Note)
• When taking out the fan case (Main unit),
do not damage the foaming parts.
Fan case (Main unit)
– 137 –
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4. How to replace the parts (Continued)
No.
Work procedure
Remove the reinforcing plate.
Note)
Explanatory drawing
7
• The reinforcing plate is provided to protect
the transportation. Scrap it after unpacking
because it is unnecessary to attach when
reassembling.
Reinforcing plate
Take off the screws which fix the bell mouth at the rear side of the motor and also take off the screws of
the motor mounting plate of the mounted fan motor.
8
Pull the motor mounting plate toward you while pushing it to the frame.
Be careful not to drop it.
Frame
Bell mouth
Motor mounting plate
Together with the removed bell mouth, slide
Bell mouth
9
the motor mounting plate under fan motor
mounting status toward you and then take it
out from the main unit.
Motor mounting plate
Note)
• Take out the motor mounting plate by
sliding it while pushing it to the frame side
so that the motor mounting plate is not
dropped from the frame.
5. Assembling work after replacing fan motor
• After replacing of the parts, assemble the fan motor in the reverse procedure of the parts removal process.
• Mount the removed Silocco fan at the following position as shown in the figure.
15
Removed Silocco fan (Front side)
Detailed drawing of Silocco fan mounting position
– 138 –
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6. How to replace the sensor
No.
Work procedure
Explanatory drawing
As same as the work procedure of the fan motor
replacing, remove the right side plates (1) and (2).
1
Right side plate (2)
Right side plate
(1)
Remove the shielding plate.
2
As the shielding plate is assembled with screws, take the fixing screws off to divide the plate.
Shielding plate
Shielding plate
Cut the bunding band which ties 3 sensors together
and then remove each sensor to replace them.
3
1) TC sensor
TC sensor can be mounted and fixed also by
removing the sensor holder and inserting the
sensor from the backward direction.
2) TCJ sensor
TA sensor
(Suctioninng surrfface)
TCJ sensor can be mounted and fixed by
entering the sensor into the sensor holder and
then push the holder including the sensor on
the pipes.
TCJ seensor
(Red)
3) TA sensor
Remove TA sensor together with the holder
because the work space is narrow.
If remounting of the holder is difficult, direct the
sensor receiving part to the suction port and
then mount and fix the sensor to the pipes
using bunding band, etc.
TC sensor
(Black)
– 139 –
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6. How to replace the sensor (Continued)
No.
Work procedure
Explanatory drawing
Insert the connectors into the specified positions on P.C. board.
4
Check carefully the directions on P.C. board so that wrong insertion is not done.
• TA sensor : CN104 (Yellow)
• TC sensor : CN101 (Black)
• TCJ sensor : CN102 (Red)
CN102
CN101
Red
White
CN104
7. How to clean the drain port
No.
Work procedure
Explanatory drawing
As same as the work procedure of the sensor
replacing, remove the right side plates and the
shielding plate, and then carry on the work.
1
– 140 –
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14-2. Outdoor Unit
No.
Part name
Procedure
Remarks
Frontt panel
1
Common
procedure
XREQUIREMENTX
Be sure to put on the gloves at any process; otherwise an
injury will be caused by the parts, etc.
1. Detachment
1) Stop operation of the air conditioner and then turn off
switch of the breaker.
2) Remove the front panel.
(Hexagonal screws Ø4 × 10, 2 pcs.)
• Remove the screws and then remove the front panel
by pulling it downward.
3) Remove the power supply cable and the indoor/outdoor
connecting wire from the cord clamp and the terminal.
4) Remove the top plate.
(Hexagonal screws Ø4 × 10, 5 pcs.)
2. Attachment
1) Attach the top plate.
(Hexagonal screws Ø4 × 10, 5 pcs.)
2) Connect the power supply cable and the indoor/outdoor
connecting wire to the terminal and then fix them with
the cord clamp.
Top plate
XREQUIREMENTX
For the power supply cable and the indoor/outdoor
connecting wire, be sure fix them using the bundling band
(procured locally) along the crossover pipe so that they do
not come to contact with the compressor, valve at gas side,
pipe at gas side and discharge pipe.
3) Attach the front panel.
(Hexagonal screws Ø4 × 10, 2 pcs.)
2
Air outlet
cabinet
1. Detachment
Heat exchanger
Reactor assembly
Motor base
Partition plate
1
1) Carry out work of 1 of
.
2) Remove screws for the air outlet cabinet and the
partition board. (ST1T Ø4 × 8, 4 pcs.)
Air outlet
cabinet
3) Remove screws for the air outlet cabinet and the bottom
plate. (Hexagonal screws Ø4 × 10, 2 pcs.)
4) Remove screws for the air outlet cabinet and the motor
base. (ST1T Ø4 × 8, 2 pcs.)
5) Remove screw for the air outlet cabinet and the heat
exchanger. (ST1T Ø4 × 8, 1 pc.)
6) Remove screws for the air outlet cabinet and the fin
guard. (Hexagonal screws Ø4 × 10, 2 pcs.)
7) Remove screws for the air outlet cabinet and the reactor
assembly. (ST1T Ø4 × 8, 2 pcs.)
Fin guard
3
Side cabinet 1. Detachment
1) Carry out work of 1 of
Side cabinet
1
.
2) Remove the screws which fix the inverter assembly and
the side cabinet. (ST1T Ø4 × 8, 2 pcs.)
3) Remove the screws which fix the side cabinet and the
valve fixing plate. (ST1T Ø4 × 8, 2 pcs.)
4) Remove screws which fix the side cabinet and the piping
panel (Rear). (Hexagonal screws Ø4 × 10, 2 pcs.)
5) Remove screw for the side cabinet and the bottom plate.
(Hexagonal screws Ø4 × 10, 1 pc.)
6) Remove screws for the side cabinet and the fin guard
(Heat exchanger). (Hexagonal screws Ø4 × 10, 5 pcs.)
Valve fixing plate
– 141 –
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No.
Part name
Procedure
Remarks
Upside of fan motor Electric parts box
4
Replacement
of electric parts
1. Detachment
1
3
1) Carry out works of 1 of
and
.
(B)
Screw
Bundling band
Power supply
Common
procedure
2) Remove the connectors connected to CDB board.
(Connector of power supply and upper side fan
motor)
Screw
• Unlock the lock of the housing part and then
remove the connectors.
3) Cut the bundling band which binds the power
supply leads.
Supporter
4) Remove the fixing screws for the electric parts
box (B). (BT2T Ø4 × 6, 2 pcs.)
5) Unlock the lock of the supporter for the electric
parts box (B).
6) Open the CDB part.
5
Replacement
of electric parts
1. Detachment
4-way valve coil
connector
Serial crossover wire
connector
1
1) Carry out work of 1 of
.
CDB board
2) Remove connectors connected to CDB board.
(Power supply, serial, upper/lower fan motor, 4-way
valve coil, PMV coil, compressor case thermo,
temperature sensor, IPDU crossover wire, DC15V,
DC280V)
Upper fan
motor connector connector
Power supply
3) Remove CDB board. (Supporters at 4 positions)
4) Attach a new CDB board.
PMV coil
connector
CDB board
DC15V
IPDU crossoover wire
connector
DC280V
Compressor
case thermo
connector
Lower
fan motor connector
Temperature sensor connector
6
Replacement
of electric parts
1. Detachment
1
3
4
1) Carry out works of 1 of
,
and
.
Terminal block crossover wire terminal
Noise filter
board
2) Remove the lead wire connected to the noise filter
board. (Power supply crossover wire, fuse
crossover wire, terminal block crossover wire)
3) Remove the earth screw. (BT2T Ø4 × 6, 1 pc.)
4) Remove the noise filter board.
(Supporter: 4 positions)
5) Attach a new noise filter board.
Earth
screw
Fuse crossover
wire terminal
Power supply
crossover wire terminal
– 142 –
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No.
Part name
Procedure
Remarks
7
Replacement
of electric parts
1. Detachment
Electric parts box (A)
Terminal block
1
3
4
1) Carry out works of 1 of
,
and
.
Electrolytic
condenser
2) Remove the lead wire connected to the terminal block.
(IPDU crossover wire)
3) Remove the connector connected to the noise filter.
(IPDU crossover wire)
4) Remove the lead wire connected to the noise filter.
(Fuse crossover wire, power supply crossover wire)
IPDU
crossover wire
Fuse
crossover wire
Power supply
crossover wire
Bundling band
5) Cut the bundling band which binds the upper lead of
the fan motor/lead of reactor.
6) Remove the fixing screws for the electric parts box (A).
(BT2T Ø4 × 6, 7 pcs.)
7) Remove the noise filter.
8) Remove the lead wires connected to the electrolytic
condenser. (Hexagonal bolt Ø5 × 12, 2 pcs.)
Condeenser
mountiing band
9) Remove screw of the condenser mounting band.
(BT2T Ø4 × 6, 1 pc.)
Hexagonal bolt
10) Remove the electrolytic condenser.
11) Mount a new electrolytic condenser.
– 143 –
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No.
Part name
Procedure
Remarks
8
Replacement of 1. Detachment
Electric parts box (A) Terminal block
electric parts
1
3
4
1) Carry out works of 1 of
,
and
.
IPDU P.C. board
2) Remove the lead wire connected to the terminal
block. (IPDU crossover wire, reactor lead wire)
3) Remove the lead wire connected to the noise filter.
(Fuse crossover wire, power supply crossover wire)
Reactor
lead wire
IPDU
crossoveer wire
Fuse
crossover wire
Power supply
crossover wire
4) Close CDB part. (Tentative fixing with supporter)
4-way valve
Serial crossover wire
5) Remove the connector connected to CDB board.
(Serial, lower fan motor, 4-way valve coil, PMV coil,
compressor case thermostat, temperature sensor,
IPDU crossover wire, DC15V, DC280V)
Power
supply
6) Cut the bundling band which binds the serial lead
wires.
Bundling
band
7) Remove the connector connected to IPDU P.C. board.
(Power supply)
PMV
Lower
fan motor
7
8) Carry out works of 5) and 8) of
.
IPDU
crossover wire
Compressor
case thermostat
Temperature sensor
9) Remove screws to connect the electric parts box and
screws of the terminal block mounting plate.
(BT2T Ø4 × 6, 3 pcs.)
10) Pull up the electric parts box to separate the unit at
CDB side.
Screws
11) Remove the compressor lead wire.
12) Remove IGPT fixing screws. (B Ø4 × 15, 2 pcs.)
13) Remove screws which fix the P.C. board.
(TT2P Ø3 × 18, 2 pcs.)
14) Remove IPDU P.C. board. (Supporter: 2 positions)
15) Remove lead wires connected to P.C. board.
P.C. board
fixing screws
Compressor
lead wires
IGBT
fixing screws
16) Mount a new IPDU P.C. board.
(Apply silicon grease to surface to be contacted with
IGBT heat sink.)
IGBT
Silicon ggrease
– 144 –
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No.
Part name
Reactor
Procedure
Remarks
9
1. Detachment
assembly
Bundling band
1
3
4
1) Carry out works of 1 of
,
and
.
2) Remove lead wires connected to the terminal block.
3) Cut the bundling band which binds the rector lead
wires.
Reactor lead
4) Remove screws of the rector assembly.
(ST1T Ø4 × 8, 7 pcs.)
Screws
5) Lift up the reactor assembly and then remove it from
the main unit.
X
CAUTIONX
The reactor assembly has heavy weight (9kg);
be careful for handling it.
Reactor cover (A)
6) Remove the reactor cover. (ST1T Ø4 × 10, 6 pcs.)
Screws
(at opppositee side,, also)
Note)
The lead wires pass through the square hole of the rector
cover. Therefore pay attention so that lead wires are not
damaged by edge when they are pulled out.
7) Remove the reactor. (ST1T Ø4 × 10, 4 pcs.)
1. Assembly
1) Assemble the reactor with procedure 7) to 1).
Marking ((Red)
XREQUIREMENTX
Arrange the reactor as same as that which is replaced.
Service reactor
N side
Marking
No
L side
Yes
N side (Upper side)
No marking
L side (Lower side)
Marking
– 145 –
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No. Part name
Procedure
Remarks
10
1
2
Fan motor
1) Carry out works of
and work of
.
2) Remove the flange nut fixing the fan motor and the
propeller fan.
Propeller fan
Loosened by
turning clockwise
∗ The flange nut is loosened by turning it clockwise.
(When tightening it, turn it counterclockwise.)
3) Remove the propeller fan.
4) Remove the connector for the fan motor from CDB.
5) Remove fan motor lead wires at lower side from the fan
motor lead fixing rubber of the penetrated part of the
partition plate.
Flangge nut
6) Remove sealing material from the fan motor lead wires at
upper side of the upper penetrated part of the partition
plate.
Propeller fan
Remove the sealing material carefully because it is
reused for the fan motor to be replaced.
7) Remove fixing screws (4 pieces each) while support the
fan motor with hands so that it does not fall.
∗ Cautions at assembling of fan motor
• Tighten the flange nut with 4.95N•m (50kgf•cm).
• Adjust length of the fan motor lead wire at the fan
motor lead fixing rubber so that the fan motor lead is
not slackened; otherwise the fan motor lead may
come to contact with the propeller fan.
Fan motor
Attach the fan motor lead fixing rubber to the partition
plate so that the projection is set at the refrigerating
cycle side.
Upper fan motor
• Stick the sealing material, which is wound around the
upper fan motor lead wires, at the position 550mm
from the connector part.
(After replacement of the fan motor and after piping
work, confirm that the fan motor lead wires do not
come to contact with the propeller fan.)
• Be sure to bind the removed bundling band with the
bundling band (procured locally).
XREQUIREMENTX
Be sure to fix the fan motor lead wires to the motor base
with metal band of the motor base so that they do not
come to contact with the propeller fan.
Lower fan motor
Sealing material
Lead wire on fan motor
Projectiion/Reefrigeerating
cycle side
Fan motor
– 146 –
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No.
Part name
Procedure
Remarks
11
Compressor
1. Removal of defective compressor
Piping panel (Front)
Compressor lead
1) Recover the refrigerant gas.
1
2) Carry out work of item 1 of
and work of
3
.
3) Remove the piping panel (Front).
Remove the piping panel (Front) and screws
of the bottom plate.
(Hexagonal screw Ø4 × 10, 2 pcs.)
Piping paanel (Rear)
Remove screw of the piping panel (Front)
and the piping panel (Rear).
(Hexagonal screw Ø4 × 10, 1 pc.)
Pipe cover
Bundling band
(For thermal proof)
4) Remove the piping panel (Rear).
Remove the piping panel (Rear) and screws
of the bottom plate.
(Hexagonal screw Ø4 × 10, 2 pcs.)
Compressor lead
TD sensor
5) Remove the sound-insulation plate.
(Upper, rolling in, rolling out)
6) Remove the terminal cover of the compres-
sor and then remove the compressor lead
and the compressor case thermo.
Compressor case thermo.
7) Remove TD sensor which is fixed to the
discharge pipe.
Compressor lead
8) Remove the inverter partition plate.
(ST1T Ø4 × 10, 2 pcs.)
9) Remove the compressor lead wires.
• IPDU P.C. board: U : CN09 Red
V : CN10 White
Ferritee
core
W : CN11 Black
• Remove the ferrite core.
(TT2P Ø4 × 10, 1 pc.)
10) Using a burner, remove the discharge pipe
and the suction pipe which are connected to
the compressor.
Inverter partition plate
Remove
(Discharge pipe)
X
WARNINGX
In case of removing the piping by broiling the
welded part with a burner, if there is oil in the
pipe, it may burst into flames at the moment that
wax melted, so take sufficient care.
Remove
(Suction pipe)
X CAUTIONX
Note so that the flame does not catch the
4-way valve and PMV.
(A malfunction may be caused.)
11) Pull off the discharge pipe and the suction
pipe of the refrigerating cycle upward.
12) Remove the compressor nuts which fix the
compressor to the bottom plate. (3 pcs.)
13) Pull out the compressor toward you.
Compresssor nuts
(3 pcs.)
X CAUTIONX
As weight of the compressor is 20kg or more,
handle it by 2 workers.
– 147 –
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No.
Part name
Procedure
Remarks
11
Compressor
2. Mounting of compressor
Compressor lead
(Continued)
1) Mount the compressor in the reverse
procedure for removal.
Note)
• After replacement of the compressor,
necessarily replace the compressor lead wires.
(Spare parts code: 43160591)
180
In this time, wind compressor lead around the
ferrite core by 5 times.
Pay attention to
finishhed diirection.
Treat the compressor lead wire which was
wound around the ferrite core so that it does
not come to contact with piping.
Winding by 5 times
Wind lead wires while tightening
so that loop does not expand.
After replacement of compressor lead as
original, perform piping along the partition
plate with natural tension.
• As shown in the right figure, mount the
sound-insulation plate (rolling in, rolling out) by
passing through it between compressor and
the piping, and between the piping and the
partition plate.
Partition plate
Bundlinng band
• Fix TD sensor by the bundling band for
heat-proof (procured locally) via the pipe cover
so that TD sensor does not directly come to
contact with the discharge pipe.
Compressor lead
(Bind TD sensor lead, case thermo lead
and fan motor lead together.)
3. Vacuuming
Put the end of sound-
Pass through sound-
insulation plate
1) Connect the vacuum pump to the charge port
and the check joint of the gas pipe valve and
then drive the vacuum pump.
insulation plate
(rolling out) on the other
end at this position.
(rolling out) between
suction pipe and
header pipe.
2) Carry out vacuuming until the vacuum low
pressure gauge indicates 1 (mmHg).
Header pipe
4. Refrigerant charge
1) Add the refrigerant amount determined by
the pipe length from the charge port of the
valve.
Suction pipe
Discharge pipe
Pass through sound-insulation plate (rolling in)
between compressor and discharge pipe,
suction pipe and then put the end of sound-
insulation plate on the other end at this position.
There should be no clearance between sound-
insulation plate (upper) and sound-insulation plate
(rolling out).
Sound-insulation plate
(upper)
Cultural rivet
Insert oone side
under cultural rivet.
Sound-insulation plate
(rolling out)
– 148 –
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No.
Part name
PMV coil
Procedure
Remarks
1. Detachment
1) Carry out work of item 1 of
12
Concave part
PMV main unit
1
.
2) Turn the coil while pulling upward and then
remove the coil from the PMV main unit.
2. Attachment
1) Surely match the positioning projection of the
coil with the concave part of PMV main unit
and then fix it.
Positioning projection
PMV coil
Fan guard
1. Detachment
13
Fan guard
Bell mouth
Discharge
port cabinet
1
2
1) Carry out works of item 1 of
and work of
.
XREQUIREMENTX
To prevent scratch on the product, carry out the
work on cardboard, cloth, etc.
2) Remove the discharge port cabinet and then
put on it so that the fan guard side directs
downward.
3) Remove the hooking claws (8 positions) of the
fan guard.
2. Attachment
1) Push the hooking claws (8 positions) with
hands from the front side to fix the claws.
Hooking claw
XREQUIREMENTX
Check that all the hooking claws are fixed at the
specified positions.
Wiring process 1. Sensor lead, compressor case thermo lead, PMV
14
lead
(Final check)
1) Turn the remained length of lead, bind it and
then fix with bundling band.
Terminal block
mountinng plate
Earth sscrew
2) Fix the lead with bundling band so that it does
not come to contact with earth screw.
Bundling band Bundling band (Forming)
(Binding)
∗ 1 piece: att rearr side
2. Fan motor lower lead, 4-way valve lead
Fan motor
lower lead
1) Fix them to terminal block fixing plate with
bundling band. (Bind with crossed right-up)
Bundling band
Terminal block
fixing plate
4-way valve lead
– 149 –
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15. EXPLODED VIEWS AND PARTS LIST
15-1. Indoor Unit
RAV-SM1403DT-A, RAV-SM1603DT-A
204
207
213
208
211
205
207
209
213
202
212
201
203
206
214
210
215
216
– 150 –
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Model Name
Location
No.
Part No.
Description
RAV-SM1403DT-A
RAV-SM1603DT-A
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
43172203 Pan Ass’y, Drain
4312C041 Motor, Fan, AC240V, 50Hz, 600W
43019830 Bushing
1
1
1
1
1
1
2
2
2
1
1
1
2
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
2
1
1
1
43020352 Fan
43020353 Fan
43170244 Hose, Drain, 25A
43139167 Bell Mouth
43139154 Band, Motor, Left
43139155 Band, Motor, Right
43179135 Band, Hose, 37-40
431S8089 Owner’s Manual
4314J404
Refrigeration Cycle Ass’y
43122118 Case Ass’y, Fan
43166011 Remote Controller, SX-A4EE
43166004 Remote Controller, SX-A11JE2
43166005 Remote Controller, EX-W2JE2
– 151 –
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RAV-SM1403DT-A, RAV-SM1603DT-A
411
403, 413
401
402
406
412
404, 410
405
409
408
407
Model Name
Location
No.
Part No.
Description
RAV-SM1403DT-A
RAV-SM1603DT-A
401
402
403
404
405
406
407
408
409
410
411
412
413
43050425 Sensor TC (F6) Ass’y, Service
43050426 Sensor TA, Service
2
1
1
1
3
1
1
1
1
1
1
1
2
1
43055529 Capacitor, AC450V, 8µF
43060859 Fuse Block, 30A, 250V, ∗ FH153-PB
43154175 Relay, LY1F, AC220 / 240V
43158204 Transformer, TT13 (AC220 – 240V)
43160565 Terminal Block, 3P, AC250V, 20A
43160568 Terminal, 2P, AC30V / DC42V, 1A
43160575 Terminal Block, 2P, AC300V, 20A
43160577 Fuse, 10A
1
3
1
1
1
1
1
1
4316V345 P.C. Board Ass’y, MCC-1520
4316V369 P.C. Board Ass’y, MCC-1403 (220 – 240V)
43155215 Capacitor, AC450V, 10MFD
1
– 152 –
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15-2. Outdoor Unit
RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
13
18
38
39
17
42
30
2
41
28
29
26, 32
31, 33
24
1
35
40
34
4, 25
27, 37
21
5
3
16
14
23
22
6, 9
7, 8, 36
15
20
11
19
12
10
– 153 –
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Model Name
RAV-SM
Location
No.
Part No.
Description
Holder, Sensor, SUS
1603AT-E 1603ATZ-E
1603ATZG-E
1
43019904
43032441
43041794
43047246
43047669
43197164
43049739
43050407
43063317
43097212
43197174
43100437
43100438
43100439
43100451
43100441
43100442
43100443
43107274
43107275
43107276
43109422
43120244
43122113
43121744
43146676
43146686
43146687
43146724
43148170
43148188
4314G266
4314G267
4314G268
4314G269
4314G270
4314G271
4314N023
43146722
4314N025
4314Q031
4314Q032
43160591
43194029
4301P703
4301P729
43060029
43155216
43158197
2
1
1
1
2
2
1
1
1
2
1
1
1
2
Nipple, Drain
3
Compressor, DA422A3F-25M
Bonnet, 3/8 IN
4
5
Nut, Flange
5
Nut, Flange, SUS304-WSB
Cushion, Rubber
2
3
1
1
2
3
1
1
6
3
1
1
3
7
Thermostat, Bimetal
Holder, Thermostat
Nut
8
9
9
Nut, Comp., SWCH10R
Panel, Front, Piping
Panel, Back, Piping
Panel, Front
3
1
1
1
1
1
1
1
1
1
3
2
2
2
2
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
3
2
2
2
2
1
1
1
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
28
29
29
29
30
30
30
31
32
33
34
35
36
37
38
39
40
41
42
1
1
1
1
1
1
1
1
1
3
2
2
2
2
1
1
1
1
1
Plate, Roof
Panel, Side
Panel, Air Outlet
Base Ass’y
Guard, Fin, Side
Guard, Fin, Back
Hanger, PP
Guard, Fan, PP
Fan, Propeller, PB521, SAN-GF20
Bell, Mouth, PP
Motor, Fan, ICF-280-100-1R
Joint, Check
Valve, Packed, 9.52
Valve, 4-Way, STF-0401G
Valve, Ball, SBV-JA5GTC-1, RoHs
Accumulator Ass’y, 2.5L
Accumulator, 2.5L
Condenser Ass’y, Down
Condenser Ass’y, Down
Condenser Ass’y, Down
Condenser Ass’y, Up
Condenser Ass’y, Up
Condenser Ass’y, Up
Valve, Pulse, Modulaing, UKV-25D100
Coil, Valve, Solenoid, STF-01AJ502E1
Coil, PMV, UKV-A038
Strainer, DIA 9.52, C1220T-H
Strainer
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
Lead Ass’y, Compressor
Bonnet
Mark, TOSHIBA
Mark, Inverter
Filter, Noise
Filter, Noise
Reactor, CH-65
– 154 –
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RAV-SM1603AT-E, RAV-SM1603ATZ-E, RAV-SM1603ATZG-E
708
716, 717
702
712
718
704
707
703
713
718
701
711
705
709, 710
714, 715
706
Model Name
RAV-SM
Location
Part No.
Description
No.
1603AT-E, 1603ATZ-E, 1603ATZG-E
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
43050425 Sensor TC (F6) Ass’y, Service
43063325 Holder, Sensor, 6 - 6.35, 8
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
43150319 Sensor Ass’y, TD (F4), Service
43155211 Capacitor
43160565 Terminal Block, 3P, AC250V, 20A
43160581 Terminal, 3P, 60A
43160579 Terminal, 4P, 30A
43163055 Holder, Sensor
43160594 Fuse, AC250V, 50A
43160595 Holder-Fuse
4316V370 P.C. Board Ass’y, CDB, MCC-1531
4316V371 P.C. Board Ass’y, A3-IPDU, MCC-1535
4316V372 P.C. Board Ass’y, Noise-Filter, MCC-1551
43060859 Fuse Block, 30A, 250V, ∗ FH153-PB
43060700 Fuse, 10A, 250V
43282001 Bushing, NB-300
43183020 Collar, NA310
43063248 Supporter Ass’y
– 155 –
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WARNINGS ON REFRIGERANT LEAKAGE
Important
Check of Concentration Limit
NOTE 2 :
The room in which the air conditioner is to be
installed requires a design that in the event of
refrigerant gas leaking out, its concentration will not
exceed a set limit.
The standards for minimum room volume are as follows.
(1) No partition (shaded portion)
The refrigerant R410A which is used in the air
conditioner is safe, without the toxicity or combustibility of
ammonia, and is not restricted by laws to be imposed
which protect the ozone layer. However, since it contains
more than air, it poses the risk of suffocation if its
concentration should rise excessively. Suffocation from
leakage of R410A is almost non-existent. With the recent
increase in the number of high concentration buildings,
however, the installation of multi air conditioner systems
is on the increase because of the need for effective use
of floor space, individual control, energy conservation by
curtailing heat and carrying power etc.
(2) When there is an effective opening with the adjacent
room for ventilation of leaking refrigerant gas
(opening without a door, or an opening 0.15% or
larger than the respective floor spaces at the top or
bottom of the door).
Most importantly, the multi air conditioner system is able
to replenish a large amount of refrigerant compared with
conventional individual air conditioners. If a single unit of
the multi conditioner system is to be installed in a small
room, select a suitable model and installation procedure
so that if the refrigerant accidentally leaks out, its
concentration does not reach the limit (and in the event
of an emergency, measures can be made before injury
can occur).
In a room where the concentration may exceed the limit,
create an opening with adjacent rooms, or install
mechanical ventilation combined with a gas leak
detection device.
Outdoor unit
Refrigerant piping
Indoor unit
(3) If an indoor unit is installed in each partitioned room
and the refrigerant piping is interconnected, the
smallest room of course becomes the object. But
when a mechanical ventilation is installed interlocked
with a gas leakage detector in the smallest room
where the density limit is exceeded, the volume of
the next smallest room becomes the object.
The concentration is as given below.
Total amount of refrigerant (kg)
Min. volume of the indoor unit installed room (m³)
≤ Concentration limit (kg/m³)
Refrigerant piping
Outdoor unit
The concentration limit of R410A which is used in multi
air conditioners is 0.3kg/m³.
Very
small
Indoor unit
room
NOTE 1 :
Small
room
Medium
room
If there are 2 or more refrigerating systems in a single
refrigerating device, the amounts of refrigerant should be
as charged in each independent device.
Large room
Mechanical ventilation device - Gas leak detector
NOTE 3 :
The minimum indoor floor area compared with the
amount of refrigerant is roughly as follows:
(When the ceiling is 2.7m high)
Outdoor unit
e.g., charged
e.g.,
amount (10kg)
charged amount (15kg)
40
Range below the
35
m²
density limit
of 0.3 kg/m³
30
25
20
15
10
5
(countermeasures
not needed)
Room A Room B Room C Room D Room E Room F
Indoor unit
Range above
the density limit
of 0.3 kg/m³
(countermeasures
needed)
For the amount of charge in this example:
The possible amount of leaked refrigerant gas in
rooms A, B and C is 10kg.
The possible amount of leaked refrigerant gas in
rooms D, E and F is 15kg.
0
10
20
30
Total amount of refrigerant
kg
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TOSHIBA CARRIER CORPORATION
23-17, TAKANAWA 3 CHOME, MINATOKU, TOKYO, 108-8580, JAPAN
Copyright © 1999 to 2007 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.
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