FILE NO. A10-001
Revised: May, 2010
SERVICE MANUAL
SPLIT TYPE
INDOOR UNIT <DIGITAL INVERTER>
RAV-SM2242DT-E
RAV-SM2802DT-E
RAV-SM2242DT-TR
RAV-SM2802DT-TR
R410A
PRINTED IN JAPAN, Apr., 2010 ToMo
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Original instruction
Please read carefully through these instructions that contain important information which complies with the
“Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.
Some of the details provided in these instructions differ from the service manual, and the instructions provided
here take precedence.
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified
service person.
When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge
described in the table below.
Agent
Qualified
Qualifications and knowledge which the agent must have
• The qualified installer is a person who installs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation.
installer (∗1)
He or she has been trained to install, maintain, relocate and remove the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by
an individual or individuals who have been trained and is thus thoroughly acquainted with the
knowledge related to these operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation
and removal has the qualifications pertaining to this electrical work as stipulated by the local laws
and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has
been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualifications pertaining to this refrigerant handling
and piping work as stipulated by the local laws and regulations, and he or she is a person who
has been trained in matters relating to refrigerant handling and piping work on the air conditioners
made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such
matters by an individual or individuals who have been trained and is thus thoroughly acquainted
with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such matters by an individual or individuals who have been
trained and is thus thoroughly acquainted with the knowledge related to this work.
Qualified service • The qualified service person is a person who installs, repairs, maintains, relocates and removes
the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install,
repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to these operations.
person (∗1)
• The qualified service person who is allowed to do the electrical work involved in installation,
repair, relocation and removal has the qualifications pertaining to this electrical work as stipulated
by the local laws and regulations, and he or she is a person who has been trained in matters
relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work
involved in installation, repair, relocation and removal has the qualifications pertaining to this
refrigerant handling and piping work as stipulated by the local laws and regulations, and he or
she is a person who has been trained in matters relating to refrigerant handling and piping
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained
and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters
relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
– 3 –
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Definition of Protective Gear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective
gloves and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the
special work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
Work undertaken
All types of work
Protective gear worn
Protective gloves
“Safety” working clothing
Gloves to provide protection for electricians and from heat
Insulating shoes
Electrical-related work
Clothing to provide protection from electric shock
Work done at heights (50 cm or more)
Transportation of heavy objects
Repair of outdoor unit
Helmets for use in industry
Shoes with additional protective toe cap
Gloves to provide protection for electricians and from heat
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.
– 4 –
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Warning Indications on the Air Conditioner Unit
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions
If removing the label during parts replace, stick it as the original.
Warning indication
Description
WARNING
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies
before servicing.
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric
power supplies before servicing.
WARNING
WARNING
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
CAUTION
CAUTION
High temperature parts.
You might get burned when removing this panel.
High temperature parts.
You might get burned when removing
this panel.
CAUTION
CAUTION
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
CAUTION
CAUTION
BURST HAZARD
Open the service valves before the operation,
otherwise there might be the burst.
BURST HAZARD
Open the service valves before the
operation, otherwise there might be the
burst.
– 5 –
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Precaution for Safety
WARNING
Before starting to repair the air conditioner, read carefully through the Service Manual, and repair
the air conditioner by following its instructions.
Only qualified service person (∗1) is allowed to repair the air conditioner.
Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury,
water leaks and/or other problems.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to carry out the electrical
work of the air conditioner.
Under no circumstances must this work be done by an unqualified individual since failure to carry
out the work properly may result in electric shocks and/or electrical leaks.
Wear protective gloves and safety work clothing during installation, servicing and removal.
When connecting the electrical wires, repairing the electrical parts or undertaking other electrical
jobs, wear gloves to provide protection for electricians and from heat, insulating shoes and
clothing to provide protection from electric shocks.
Failure to wear this protective gear may result in electric shocks.
Use wiring that meets the specifications in the Installation Manual and the stipulations in the local
regulations and laws.
Use of wiring which does not meet the specifications may give rise to electric shocks, electrical
leakage, smoking and/or a fire.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to undertake work at
heights using a stand of 50 cm or more or to remove the intake grille of the indoor unit to
undertake work.
General
When working at heights, use a ladder which complies with the ISO 14122 standard, and follow
the procedure in the ladder’s instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
When working at heights, put a sign in place so that no-one will approach the work location,
before proceeding with the work.
Parts and other objects may fall from above, possibly injuring a person below.
Do not touch the aluminum fin of the outdoor unit.
You may injure yourself if you do so. If the fin must be touched for some reason, first put on
protective gloves and safety work clothing, and then proceed.
Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall off of the outdoor unit and result in injury.
When transporting the air conditioner, wear shoes with additional protective toe caps.
When transporting the air conditioner, do not take hold of the bands around the packing carton.
You may injure yourself if the bands should break.
This air conditioner has passed the pressure test as specified in IEC 60335-2-40 Annex EE.
DENGER
Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit
breaker to the OFF position. Otherwise, electric shocks may result.
Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the
circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact
with the interior parts.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to remove the intake grille
of the indoor unit or service panel of the outdoor unit and do the work required.
Turn off
breaker.
Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuit
breaker to the OFF position, and place a “Work in progress” sign on the circuit breaker.
When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF without
fail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work.
– 6 –
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Even if the circuit breaker has been set to the OFF position before the service panel is removed
and the electrical parts are repaired, you will still risk receiving an electric shock.
For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before
proceeding with the repair work.
For details on the short-circuiting procedure, refer to the Service Manual.
You may receive an electric shock if the voltage stored in the capacitors has not been sufficiently
discharged.
Execute
discharge
between
terminals.
Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair
or removal work is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
Prohibition
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the
electrical parts with the electrical parts box cover of one or more of the indoor units and the
service panel of the outdoor unit removed in order to find out exactly where the trouble lies, wear
insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to
avoid touching any live parts.
You may receive an electric shock if you fail to heed this warning. Only qualified service person
(∗1) is allowed to do this kind of work.
Stay on
protection
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.
After completing the repair or relocation work, check that the ground wires are connected properly.
Check earth
wires.
Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for
telephone wires.
Do not modify the products.Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.
Prohibition of
modification.
When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the
specifications given in the Service Manual (or use the parts contained on the parts list in the
Service Manual).
Use specified Use of any parts which do not satisfy the required specifications may give rise to electric shocks,
parts.
smoking and/or a fire.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the
electrical parts with the electrical parts box cover of one or more of the indoor units and the
service panel of the outdoor unit removed in order to find out exactly where the trouble lies, place
"Keep out" signs around the work site before proceeding.
Do not bring
a child close to
Third-party individuals may enter the work site and receive electric shocks if this warning is not
the equipment. heeded.
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 performing repairs using a gas burner, replace the refrigerant with nitrogen gas because
the oil that coats the pipes may otherwise burn.
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.
– 7 –
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The refrigerant used by this air conditioner is the R410A.
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
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).
Insulator
check
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
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.
Ventilation
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.
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.
Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may
result in refrigerant leakage.
Compulsion
Nitrogen gas must be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
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.
– 8 –
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Once the repair work has been completed, check for refrigerant leaks, and check the insulation
resistance and water drainage.
Then perform a trial run to check that the air conditioner is running properly.
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 matters before a test run after repairing piping.
• Connect the pipes surely and there is no leak of refrigerant.
• The valve is opened.
Running the compressor under condition that the valve closes causes an abnormal high
pressure resulted in damage of the parts of the compressor and etc. and moreover if there is
leak of refrigerant at connecting section of pipes, the air is suctioned and causes further
abnormal high pressure resulted in burst or injury.
Do not
operate the
unit with the
valve closed.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air
conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual
since a fire, electric shocks, injury, water leakage, noise and/or vibration may result.
Check the following items 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.
Check after
reinstallation
When carrying out the pump-down work shut down the compressor before disconnecting the
refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still
operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to
an abnormally high level, and possibly resulting in reputing, injury, etc.
When the service panel of the outdoor unit is to be opened in order for the compressor or the
area around this part to be repaired immediately after the air conditioner has been shut down, set
the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the
service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the compressor
pipes and other parts will be very hot to the touch. In addition, before proceeding with the repair
work, wear the kind of insulated heat-resistant gloves designed to protect electricians.
When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor,
Cooling check inverter or the areas around these parts to be repaired immediately after the air conditioner has
been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes
before opening the service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the fan motor,
reactor, inverter heat sink and other parts will be very hot to the touch.
In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant
gloves designed to protect electricians.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to install the air
conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
Before starting to install the air conditioner, read carefully through the Installation Manual, and
follow its instructions to install the air conditioner.
Do not install the air conditioner in a location that may be subject to a risk of expire to a
combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure
themselves or receive electric shocks if they poke their fingers or other objects into the indoor unit
while the air conditioner is running.
Installation
Install a circuit breaker that meets the specifications in the installation manual and the stipulations
in the local regulations and laws.
Install the circuit breaker where it can be easily accessed by the qualified service person (∗1).
Do not place any combustion appliance in a place where it is directly exposed to the wind of air
conditioner, otherwise it may cause imperfect combustion.
– 9 –
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Explanations given to user
• If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit
breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the
circuit breaker to the ON position until the repairs are completed.
Relocation
• Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner.
It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
• When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will
cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level,
and possibly resulting in reputing, injury, etc.
(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”
Declaration of Conformity
Manufacturer:
Toshiba Carrier Corporation
336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN
Authorized
Nick Ball
Representative/TCF holder:
Toshiba EMEA Engineering Director
Toshiba Carrier UK Ltd.
Porsham Close, Belliver Industrial Estate,
PLYMOUTH, Devon, PL6 7DB.
United Kingdom
Hereby declares that the machinery described below:
Generic Denomination:
Model/type:
Air Conditioner
RAV-SM2242DT-E, RAV-SM2802DT-E
RAV-SM2242DT-TR, RAV-SM2802DT-TR
Commercial name:
Digital Inverter Series
Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations
transposing into national law.
Complies with the provisions of the following harmonized standard:
EN 378-2: 2008
Note: This declaration becomes invalid if technical or operational modifications are introduced without the
manufacturer’s consent.
Specifications
Sound power level (dB)
Model
Weight (kg)
Cooling
74
Heating
74
RAV-SM2242DT-E
RAV-SM2802DT-E
RAV-SM2242DT-TR
RAV-SM2802DT-TR
160
160
160
160
75
75
74
74
75
75
– 10 –
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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.
– 11 –
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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
conventional equipment
can be used
Whether conventional
equipment can be used
Flare tool
Pipe flaring
Ye s
Ye s
Ye s
Ye s
∗ (Note)
∗ (Note)
N o
Ye s
∗ (Note)
No
‚
Copper pipe gauge
for adjusting
projection margin
Flaring by
conventional flare tool
Torque wrench
Gauge manifold
Charge hose
Tightening of flare nut
ƒ
„
ꢀ
†
Evacuating, refrigerant
charge, run check, etc.
N o
No
Vacuum pump adapter Vacuum evacuating
Ye s
Ye s
N o
Ye s
Ye s
Electronic balance for
Refrigerant charge
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
– 12 –
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1. SPECIFICATIONS
1-1. Indoor Unit
1-1-1. Concealed Duct High static pressureType
Indoor unit
Model
RAV-SM2242DT-E
RAV-SM2242AT8-E
20.0
RAV-SM2802DT-E
RAV-SM2802AT8-E
23.0
Outdoor unit
Cooling capacity
(kW)
(kW)
(V)
Heating capacity
22.4
27.0
Power supply
1 phase 220-240V~ 50Hz
Running current
Indoor unit
(A)
5.25 – 4.81
1.12
5.25 – 4.81
1.12
Power consumption
(kW)
(%)
Power factor
97
97
Power supply
(V)
3 phase 380-415V
Cooling
Running current
Power consumption
Power factor
(A)
9.83 – 9.00
12.33 – 11.29
Outdoor unit
(kW)
(%)
6.08
7.63
94
94
Power consumption
EER
(kW)
7.20 (3.26 – 9.09)
8.75 (3.36 – 12.76)
Total
2.78
D
2.63
D
Energy efficiency class *
Power supply
(V)
(A)
1 phase 220-240V~ 50Hz
Electrical
characteristics
Running current
Power consumption
Power factor
5.25-4.81
1.12
5.25-4.81
1.12
Indoor unit
(kW)
(%)
97
97
Power supply
(V)
3 phase 380 – 415V
Heating
Running current
Power consumption
Power factor
(A)
8.68 – 7.95
11.36 – 10.40
Outdoor unit
Total
(kW)
(%)
5.37
7.03
94
94
Power consumption
COP
(kW)
6.49 (2.57 – 7.45)
8.15 (2.57 – 11.01)
3.45
B
3.31
C
Energy efficiency class ∗
Indoor unit
(A)
(A)
15.0
18.0
15.0
20.0
Maximum
current
Outdoor unit
Appearance
Main unit
Zinc hot dipping steel plate
Height
Width
Depth
(mm)
(mm)
(mm)
(kg)
470
1380
1250
160
470
1380
1250
160
Outer dimension Main unit
Total weight
Main unit
Fan
Heat exchanger
Finned tube
Centrifugal fan
3600
Centrifugal fan
4200
Standard air flow at 137Pa / (at Mid tap)
Fan Speed
(m³/min)
Fan unit
Air filter
1
1
Motor
(W)
370 × 3
370 × 3
External static pressure (H/M/L)
(Pa)
196 / 137 / 69
None (Local procure)
196 / 137 / 69
None (Local procure)
Controller (Sold Separately)
Sound pressure level
Sound power level
Gas side
RBC-AMT32E, AMS41E, AS21E2
H/M/L
H/M/L
(dB•A)
(dB•A)
(mm)
54
74
55
75
28.6
12.7
28.6
12.7
Connecting pipe Liquid side
Drain port
(mm)
(mm)
32 (VP25)
– 13 –
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1-1-1. Concealed Duct High static pressureType (Contined)
Indoor unit
Model
RAV-SM2242DT-TR
RAV-SM2244AT8-E
20.0
RAV-SM2802DT-TR
RAV-SM2804AT8-E
23.0
Outdoor unit
Cooling capacity
Heating capacity
(kW)
(kW)
(V)
22.4
27.0
Power supply
1 phase 220-240V~ 50Hz
Running current
Power consumption
Power factor
(A)
5.25 – 4.81
1.12
5.25 – 4.81
1.12
Indoor unit
(kW)
(%)
97
97
Power supply
(V)
3 phase 380-415V
Cooling
Running current
Power consumption
Power factor
(A)
9.83 – 9.00
12.33 – 11.29
Outdoor unit
(kW)
(%)
6.08
7.63
94
94
Power consumption
EER
(kW)
7.20 (3.26 – 9.09)
8.75 (3.36 – 12.76)
Total
2.78
D
2.63
D
Energy efficiency class *
Power supply
(V)
(A)
1 phase 220-240V~ 50Hz
Electrical
characteristics
Running current
Power consumption
Power factor
5.25 – 4.81
1.12
5.25 – 4.81
1.12
Indoor unit
(kW)
(%)
97
97
Power supply
(V)
3 phase 380-415V
Heating
Running current
Power consumption
Power factor
(A)
8.68 – 7.95
11.36 – 10.40
Outdoor unit
Total
(kW)
(%)
5.37
7.03
94
94
Power consumption
COP
(kW)
6.49 (2.57 – 7.45)
8.15 (2.57 – 11.01)
3.45
B
3.31
C
Energy efficiency class ∗
Indoor unit
(A)
(A)
15.0
18.0
15.0
20.0
Maximum
current
Outdoor unit
Appearance
Main unit
Zinc hot dipping steel plate
Height
Width
Depth
(mm)
(mm)
(mm)
(kg)
470
1380
1250
160
470
1380
1250
160
Outer dimension Main unit
Total weight
Main unit
Fan
Heat exchanger
Finned tube
Centrifugal fan
3600
Centrifugal fan
4200
Standard air flow at 137Pa / (at Mid tap)
Fan Speed
(m³/min)
Fan unit
Air filter
1
1
Motor
(W)
370 × 3
370 × 3
External static pressure (H/M/L)
(Pa)
196 / 137 / 69
None (Local procure)
196 / 137 / 69
None (Local procure)
Controller (Sold Separately)
Sound pressure level
Sound power level
Gas side
RBC-AMT32E, AMS41E, AS21E2
H/M/L
H/M/L
(dB•A)
(dB•A)
(mm)
54
74
55
75
28.6
12.7
28.6
12.7
Connecting pipe Liquid side
Drain port
(mm)
(mm)
32 (VP25)
– 14 –
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2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
2-1. Indoor Unit
RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR
e r o m o r
1 0 0
e r o m o r
5 0
9
6 0
2 5 3
4
0 8 1 3
0 1 0
0 6 1 2
) h c t i p g n i t u o n m t l o b n g g i a n H (
0 4 7
5 4
1 3
0 1 5 0 2 0
e r m r o o 0 0 1 0
0 2 0
e r o m o r
2 0 0
5 3
0 3 7
5 6
– 15 –
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3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM
3-1. Indoor Unit
RAV-SM2242DT-E, RAV-SM2802DT-E
RAV-SM2242DT-TR, RAV-SM2802DT-TR
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
Indoor unit
Outer diameter of refrigerant pipe
Gas side ØA
Liquid side ØB
SM224, SM280 type
28.6
12.7
– 16 –
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4. WIRING DIAGRAM
4-1. Indoor Unit
RAV-SM2242DT-E, RAV-SM2802DT-E
RAV-SM2242DT-TR, RAV-SM2802DT-TR
– 17 –
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4-2. Fan Characteristics
Current value as a criterion, adjust the air volume value to become within the range of the chart below.]
< RAV-SM2242 type >
Standard air volume: 3600m³/h
8
7.5
7
6.5
High static pressure tap (50Hz)
6
5.5
5
Medium static pressure tap (50Hz)
Low static pressure tap (50Hz)
4.5
4
300
250
200
150
100
High static pressure tap (50Hz)
Medium static pressure tap (50Hz)
Low static pressure tap (50Hz)
50
5
2800
3000
3400
3800
4200 4400
4000 4320
2880
3200
3600
Lower limit of air volume
Air volume (m³/h)
Upper limit of air volume
– 18 –
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< RAV-SM2802 type >
Standard air volume: 4200m³/h
8.5
8
7.5
7
High static pressure tap (50Hz)
6.5
6
Medium static pressure tap (50Hz)
Low static pressure tap (50Hz)
5.5
5
4.5
4
350
300
250
200
150
100
High static pressure tap (50Hz)
Medium static pressure tap (50Hz)
50
5
Low static pressure tap (50Hz)
3200 3400
3800
4200
4600
5000 5200
4800 5040
3360
3600
4000
4400
Lower limit of air volume
Air volume (m³/h)
Upper limit of air volume
REQUIREMENT
Add a air volume damper to the air supply duct, and adjust the air volume in the range from 80% to 120% of
the standard air volume.
– 19 –
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n Wire connection change of fan motor
This duct is composed of 3 fan motors.
To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires
that are connected to the underside of the fan tap changing terminal block to the same number
(F1, F2 or F3) terminal.
The wires of the fan motor has been connected to (F2) [External static pressure 137Pa (14mmAq)] as
factory default.
Low static pressure (F1)
YEL: Yellow
BLU: Blue
ORG: Orange
FM
FM
FM
Fan motor
Fan motor
Fan motor
F
1
F
2
F
3
F
4
F
1
F
2
F
3
F
4
F
F
F
1
1
1
F
F
F
2
2
2
F3
F3
F3
F4
FAN2
FAN1
FAN3
Standard (Middle) static pressure (F2)
Fan tap changing
terminal block
Electrical control box
FM
FM
FM
Control
P.C. board
Fan motor
Fan motor
Fan motor
4P terminal
block
F1
F2
F
3
F
4
F
1
F2
F3
F
4
F4
3P terminal
block
FAN2
FAN1
FAN3
2P terminal
block
High static pressure (F3)
FM
FM
Fan motor
FM
Fan motor
Fan motor
F
1
F2
F3
F
4
F
1
F
2
F3
F4
F4
FAN2
FAN1
FAN3
External static pressure
Pa (mmAq)
Terminal block No.
Fan motor wiring
Remarks
Yellow
F1
F2
F3
69 (7)
Low static pressure
Blue
137 (14)
196 (20)
Factory default
Middle static pressure
Orange
High static pressure
∗ Do not use F4.
NOTE
When the external static pressure is changed, write down the static pressure once change in the wiring
diagram of the indoor unit is made.
– 20 –
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5. SPECIFICATIONS OF ELECTRICAL PARTS
5-1. Indoor Unit
RAV-SM2242DT-E, RAV-SM2802DT-E
RAV-SM2242DT-TR, RAV-SM2802DT-TR
No.
1
Parts name
Fan motor
Type
Specifications
Output (Rated) 370 W
10 kΩ at 25°C
STF-200-370-4AR
2
TA sensor
TC sensor
TCJ sensor
Lead wire length : 818mm
3
Ø6 size lead wire length : 2000mm Vinyl tube (Black)
Ø6 size lead wire length : 2000mm Vinyl tube (Red)
10 kΩ at 25°C
4
10 kΩ at 25°C
– 21 –
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6. INDOOR CONTROL CIRCUIT
6-1. Indoor Controller Block Diagram
RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR
6-1-1. Connection of Wired (Simple) Remote Controller
Wired (Simple) Master remote controller
(Max. 2 units)
Schedule timer
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 (Header)
A
B
#2
(Follower)
A
#3
(Follower)
Network adapter (Option)
B
A
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)
(Sold separately)
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 wired (simple) remote controllers are connected,
Max. 7 units are connectable.
∗2 A network adapter is mounted to only 1 unit.
∗3 Connection of schedule timer to the simple remote controller is unavailable.
– 22 –
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6-2. 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
Control outline
command
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, Setup air volume operation
continues.)
Cooling
operation
+1.0
Setup air volume operation
• Setup air volume
Ta
(˚C)
Ts +
α
-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 ≥ 24°C
24 > To ≥ 18°C
To < 18°C
To error
+1K
0K
– 23 –
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No.
Item
Outline of specifications
Remarks
3
Room temp.
control
1) Adjustment range: Remote controller setup temperature (°C)
COOL
HEAT
AUTO
Wired type
18 to 29
18 to 29
18 to 29
2) Using the Item code 06, the setup temperature in heating
operation can be corrected.
Shift of suction
temperature in heating
operation
Setup data
0
2
4
6
Setup temp. correction
+0°C
+2°C
+4°C
+6°C
Setup air volume operation
Indoor formation
Setup data
2
1-way Air Discharge Cassette Type
2-way Air Discharge Cassette Type
Concealed Duct Standard Type
High Wall Type
Under Ceiling Type
Floor Standing Concealed Type
Floor Standing Type
0
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
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.
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
NOTE)
In case that Low volume is set, the maximum frequency is
restricted to approx. [SB].
– 24 –
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No.
Item
Outline of specifications
Remarks
5
Automatic cooling/
heating control
1) The judgment of selecting COOL/HEAT is carried out
as shown below. When exceeding +1.5 against Tsh
10 minutes and after thermo.-OFF, heating operation
(Thermo. OFF) exchanges to cooling operation.
Tsc: Setup temp. in
cooling operation
Tsh: Setup temp. in
heating operation
+ temp. correction of
room temp. control
Description in the parentheses shows an example of
cooling ON/OFF.
Cooling
Ta (˚C)
+1.5
(Cooling ON)
Tsc
or
Tsh
(Cooling OFF)
-1.5
Heating
WWhen –1.5 or more 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.
6
Cool air discharge
preventive control
1) In heating operation, the indoor fan is controlled
In A zone, [PRE-HEAT
based on the detected temperature of Tc sensor or Tcj (Heating ready)] is
sensor. As shown below, the upper limit of the
revolution frequency is restricted.
displayed.
However B zone is assumed as C zone for 6 minutes
and after when the compressor activated.
In defrost operation, the control value of Tc or Tcj are
shifted by 6°C.
Tc
Tcj
(˚C)
HH
26
B zone
OFF
16
A zone
– 25 –
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No.
Item
Outline of specifications
Remarks
Tc,Tcj:
7
Freeze preventive control 1) The cooling operation is performed as follows
(Low temperature release)
based on the detected temperature of Tc sensor or
Tcj sensor.
When [J] zone is detected for 6 minutes
Indoor heat exchanger
sensor temperature
(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 [Fan] 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
‚
– 26 –
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No.
Item
Outline of specifications
Remarks
8
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.
• In [N] zone, the commanded frequency is held.
• When [L] zone is detected, the commanded fre-
quency is returned to the original value by approx.
6Hz every 60 seconds.
Setup at shipment
Tc(˚C)
M
N
Tcj
A
Control temp. (°C)
A
B
B
56 (54)
52 (52)
L
NOTE:
When the operation has started or when Tc or Tcj < 30°C Same status as that
at start of the operation or after operation start,
temperature is controlled between values in parentheses
of A and B.
when “thermostat-OFF”
9
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.
(
When drain up kit
sold separately is
mounted
Check code [P10]
)
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.
10 After-heat
elimination
When heating operation stops, in some cases, the indoor
fan operates with [FAN] for approx. 30 seconds.
11 HA control
1) ON/OFF is possible by HA signal input from the
remote site when it is connected to the wireless
remote unit or the remote Start/Stop I/F.
2) ON/OFF status is output to HA output terminal.
3) HA I/O specification conforms to JEMA Standard.
Use for remote start/stop
When using HA terminal
(CN61), the connecting
connector sold sepa-
rately is necessary.
In a group operation,
connect it to any of
master or follower indoor
unit for use.
– 27 –
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No.
Item
Outline of specifications
Remarks
12 Frequency fixed
operation
<In case of wired remote controller>
Approx. command
frequency [S7]
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.)
13 Filter sign display
1) The operation time of the indoor fan is calculated,
the filter reset signal is sent to the remote controller
when the specified time has passed, and it is
displayed on LCD.
[FILTER
] goes on.
Specified time
Duct: 2500H
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
selection
1) Setting at the centerl controller side enables to
select the contents which can be operated on the
remote controller at indoor unit side.
2) Setup contents
• 64 line central controller (TCB-SC642TLE2)
[Individual]: Operated on the remote controller
(Priority to second pushing)
Display at remote
controller side
(No display)
[Central 1]: ON/OFF operation cannot be
operated on the remote controller.
[Central
] goes on
[Central 2]: ON/OFF, mode selection, temp. setup [Central
operations cannot be operated on
] goes on
] goes on
] goes on
the remote controller.
[Central 3]: Mode selection and temp. setup
operations cannot be operated on the
remote controller.
[Central
[Central 4]: Mode selection cannot be operated
on the remote controller.
[Central
“Fixed with 75%”.)
∗ 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).
– 28 –
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No.
Item
Outline of specifications
Remarks
15 Save operation
(By connected
outdoor unit)
1) When selecting [AUTO] mode, the save operation is enabled.
2) Shift (Correct) the setup temperature from input values of the
every sensor in the range of not spoiling comfortable ability.
3) The input values mean the room temperature Ta, outside
temperature To, air volume, and indoor heat exchanger sensor
temperature Tc. Their data for 20 minutes are averaged to
calculate the correction value of the setup temperature.
4) The setup temperature is shifted every 20 minutes, and the
shift value is
In cooling time: +1.5 to ~1.0K
In heating time: –1.5 to +1.0K.
16 Max. frequency 1) When selecting [AUTO] mode, the Max. frequency cut control
cut control
operation is enabled.
2) Cooling operation mode: In case of To <28°C, Max. frequency
cut is controlled based on the following figure.
Ta (˚C)
+4
Usual control
+3
The Max. frequency is restricted
to approx. cooling rated value.
Tsc
3) Heating operation mode: In case of To > 15°C, Max. frequency
cut is controlled based on the following figure.
Ta (˚C)
Tsh
The Max. frequency is restricted
to approx. cooling rated value.
–3
–4
Usual control
– 29 –
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6-3. Indoor Print Circuit Board
<MCC-1403>
– 30 –
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6-3-1. 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, 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
CN20
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
∗ 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.
– 31 –
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7. INDOOR UNITTROUBLESHOOTING
7-1. 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 it during thermo-OFF?
• 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.
– 32 –
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Main remote controller (RBC-AMT32E)
How to read check monitor display
<7-segment display>
Procedure 1
n Confirmation and check
SET
TEST
When pushing
and
buttons at the same time
When an error occurred in the air conditioner, an
error code and indoor UNIT No. appear on the
display part of the remote controller.
for 4 seconds or more, the following display appears.
If is displayed, the mode enters in the error log
mode.
The error code is only displayed during the
operation.
• [01: Order of error log] is displayed in CODE No.
• [Error code] is displayed in CHECK.
If the display disappears, operate the air
conditioner according to the following
“Confirmation of error log” for confirmation.
• [Indoor unit address in which an error occurred] is
displayed in Unit No..
Error code
Indoor UNIT No. in
which an error occurred
Procedure 2
n Confirmation of error log
TEMP.
Every pushing of
button used to set
When an error occurred on the air conditioner,
the error log can be confirmed with the following
procedure. (The error history is stored in
memory up to 4 errors.)
temperature, the error log stored in memory is
displayed in order.
The numbers in CODE No. indicate CODE No.
[01] (latest) → [04] (oldest).
The log can be confirmed from both operating
status and stop status.
REQUIREMENT
CL
Do not push
the indoor unit will be deleted.
button because all the error log of
2
3
1
Procedure 3
TEST
After confirmation, push
usual display.
button to return to the
– 33 –
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n Remote controller switch monitoring function
This function is available to call the service
monitor mode from the remote controller during a
test run to acquire temperatures of sensors of the
remote controller, indoor unit, and outdoor unit.
Outdoor unit data
Data name
CODE No.
Outdoor unit heat exchanger (coil)
temperature (TE)
60
61
62
63
64
65
6A
Outside air temperature (TO)
Compressor discharge temperature (TD)
Compressor suction temperature (TS)
—
Heatsink temperature (THS)
Operating current (x1/10)
2
4
Compressor cumulative operating hours
(x100h)
F1
1
3
CL
TEST
1. Push
and
buttons simultaneously for at
least 4 seconds to call the service monitor mode.
The service monitor indicator lights up and the
header indoor unit number is displayed first.
CODE No. 00 is also displayed.
2. Pushing TEMP.
buttons, select the
number of sensor, etc. (CODE No.) to be
monitored. (See the following table.)
LOUVER
3. Pushing UNIT
(left side of the button), select an
indoor unit to be monitored.
The sensor temperatures of indoor units and
their outdoor unit in the control group are displayed.
TEST
4. Push
button to return to the normal display.
Indoor unit data
CODE No.
Data name
01
02
Room temperature (remote controller)
Indoor unit intake air temperature (TA)
Indoor unit heat exchanger (coil)
temperature (TCJ)
03
04
F3
Indoor unit heat exchanger (coil)
temperature (TC)
Indoor unit fan cumulative
operating hours (x1 h)
– 34 –
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7-1-1. Check Code List (Indoor)
(Indoor unit detected)
Check code indication
Air conditioner operation
Representative defective position
Explanation of error contents
TCC-LINK central &
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
E18
F01
F02
F10
F29
L03
L07
L08
L09
L20
L30
P01
P10
P19
P31
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
Regular communication error between indoor master and follower units
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
MCU communication error between main motor and micro computer
Regular communication between indoor master and follower units is impossible.
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
Remote controller
Air conditioner operation
Representative defective position
Explanation of error contents
Automatic
reset
Operation
continuation
E01
E02
No master remote controller, Remote controller communication (Receive) error
Remote controller communication (Send) error
Signal cannot be received from indoor unit. Master remote controller was not set. (including 2 remote controllers)
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.)
E09
Duplicated master remote controller
×
(Central control devices detected)
Check code indication
TCC-LINK central
Air conditioner operation
Representative defective position
Explanation of error contents
Automatic
reset
Operation
continuation
C05
C06
C12
P30
Central control system communication (send) error
Signal sending operation of central control system is impossible. There are multiple same central devices. (AI-NET)
Signal receiving operation of central control system is impossible.
—
—
—
—
—
—
—
—
Central control system communication (receive) error
General-purpose device control interface batched warning
Group follower unit is defective.
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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Check Code List
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 header 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 header and follower units
Stop
Displayed when
(Automatic reset) error is detected
– 36 –
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Error mode detected by outdoor unit
The check code has been ramified from 4 series and after
The ramified check code is displayed only when both the indoor unit and the outdoor unit are 4 series and after.
(Ex. Combination of RAV-SM1404UT-E with RAV-SM2804AT8-E)
When the indoor unit is 3 series and before, the conventional check code is displayed.
(Ex. Combination of RAV-SM1402BT-E and RAV-SM2804AT8-E: Outdoor unit only is 4 series.)
Operation of diagnostic function
Check code
Indoor unit
before after
Status of
air conditioner
Judgment and measures
Cause of operation
Condition
3 series 4 series
1. Check discharge temp. sensor (TD).
2. Check outdoor P.C. board (MCC-1599).
Disconnection, short of discharge
temp. sensor (TD)
Displayed when
error is detected
F04
F06
F08
F04
F06
F07
F12
F15
F08
Stop
Stop
1. Check temp. sensor (TE).
Disconnection, short of outdoor temp.
sensor (TE)
Displayed when
error is detected
2. Check outdoor P.C. board (MCC-1599).
1. Check temp. sensor (TL).
Disconnection, short of outdoor temp.
sensor (TL)
Displayed when
error is detected
Stop
2. Check outdoor P.C. board (MCC-1599).
1. Check suction temp. sensor (TS).
Disconnection, short of suction temp.
sensor (TS)
Displayed when
error is detected
Stop
2. Check outdoor P.C. board (MCC-1599).
1. Check temp. sensor (TE, TS).
Miss-mounting of outdoor temp.
sensor (TE, TS)
Displayed when
error is detected
Stop
2. Check outdoor P.C. board (MCC-1599).
1. Check outside temp. sensor (TO).
Disconnection, short of outside temp.
sensor (TO)
Displayed when
error is detected
Continue
2. Check outdoor P.C. board (MCC-1599).
Disconnection, short of heat sink
temp. sensor (TH)
Displayed when 1. Check outdoor P.C. board (MCC-1599).
error is detected (Q201 is incorporated in TH sensor.)
F13
F31
L10
Stop
Stop
Stop
Displayed when 1. Check outdoor P.C. board (MCC-1599).
error is detected
Outdoor P.C. EEPROM error
Displayed when 1. Outdoor service P.C. board
Unset jumper of service P.C. board
error is detected
Check model type setting jumper wire.
1. Check outdoor P.C. board
Communication error between
outdoor P.C. board MCU
(MCC-1596, MCC-1597, MCC-1599).
Displayed when
Stop
Stop
error is detected 2. Connection check between CN802 of MCC-1599 and
CN504 of MCC-1597, and also connection check
L29
P07
between CN505 of MCC-1597 and CN851 of MCC-1596.
Heat sink overheat error
1. Check screw tightening between PC. Board and heat
sink and check radiator grease (MCC-1596).
Displayed when
error is detected
∗ Heat sink temp. sensor detected
over specified temperature.
L29
2. Check heat sink blast path.
1. Check gas leak, recharge
Detection of gas leak
2. Check full open of service valve.
Displayed when
error is detected
∗ Discharge temp. sensor (TD),
Suction temp. sensor (TS) detected
temperature over specified temp.
3. Check PMV (Pulse Motor Valve).
4. Check broken pipe.
P15
P19
Stop
Stop
5. Check discharge temp. sensor (TD), suction temp.
sensor (TS).
4-way valve inverse error
1. Check operation of 4-way valve.
∗ After heating operation has started,
indoor heat exchanger temp. lowers
under the specified temp.
2. Check outdoor heat exchanger (TE), suction temp.
sensor (TS).
Displayed when
error is detected 3. Check indoor heat exchanger sensor (TC).
4. Check 4-way valve coil.
∗ After heating operation has started,
outdoor heat exchanger / suction
temp. rises over the specified temp.
5. Check PMV (Pulse Motor Valve).
Compressor break down
1. Check power supply voltage. (AC342 to 457V)
Displayed when
∗ Although operation has started,
operation frequency decreases and
operation stops.
2. Overload operation of refrigerating cycle
H01
H02
H01
H02
Stop
Stop
error is detected
Compressor lock
1. Trouble of compressor (Lock, etc.): Replace compressor.
Displayed when
* Over-current detection after
compressor start-up
2. Wiring error of compressor (Open phase)
error is detected
– 37 –
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Operation of diagnostic function
Check code
Indoor unit
Status of
air conditioner
Judgment and measures
Cause of operation
Condition
before
after
3 series 4 series
Displayed when 1. Check outdoor P.C. board (MCC-1596).
H03
Current detection circuit error
Stop
Stop
error is detected
(AC current detection circuit)
H03
P05
1. Check open phase of 3-phase power supply.
Open phase of 3-phase power
supply
Displayed when
error is detected
2. Black lead wire to be connected to CN03 of MCC-1596
does not pass through T611.
1. Check connection of Ps sensor connector.
2. Check failure of Ps sensor.
Displayed when
error is detected
F23
Ps sensor error
Stop
3. Check compressing power error of compressor.
4. Check 4-way valve error.
5. Check outdoor P.C. board error.
1. Check service valves are fully opened.
(Gas side, Liquid side)
H06
2. Check clogging of outdoor PMV. (PMV1, 2)
3. Check SV2 circuit.
Displayed when
H06
Low pressure protective operation
Stop
error is detected 4. Check Ps sensor error.
5. Check clogging of indoor filter.
6. Check clogging of refrigerant pipe.
7. Check of outdoor fan operation. (In heating mode)
8. Check short of refrigerant.
Discharge temp. error
1. Check refrigerating cycle (Gas leak)
2. Trouble of electronic expansion valve
3. Check discharge temp. sensor (TD).
Displayed when
error is detected
P03
P03
H04
Stop
Stop
∗ Discharge temp. (TD) over
specified value was detected.
1. Check case thermostat and connector.
2. Check gas leak, recharge
Case thermostat operation
Displayed when
error is detected
3. Check full open of service valve.
4. Check PMV (Pulse Motor Valve).
5. Check broken pipe.
∗ Abnormal overheat of compressor
1. Check service valves are fully opened.
(Gas side, Liquid side)
2. Check of outdoor fan operation.
3. Check motor error of outdoor fan.
4. Check clogging of outdoor PMV. (PMV1, 2)
5. Check clogging of heat exchanger in indoor/outdoor units.
6. Short-circuit status of suction/discharge air in outdoor unit.
7. Check outdoor P.C. board error.
Displayed when
error is detected
P04
High pressure SW system error
Stop
P04
8. Check fan system error (Cause of air volume drop) at
indoor side.
9. Check PMV opening status in indoor unit.
Displayed when 1. Check power supply voltage. AC342 to 457V
error is detected
P05
P20
Power supply voltage error
Stop
Stop
1. Check outdoor heat exchanger sensor (TL).
2. Check indoor heat exchanger sensor (TC, TCJ).
3. Check full open of service valve.
High pressure protective operation
• During cooling operation, outdoor
temp. sensor (TL) detected
temperature over specified temp.
Displayed when 4. Check indoor/outdoor fan.
error is detected
5. Check PMV (Pulse Motor Valve).
• During heating operation, indoor
temp. sensor (TC, TCJ) detected
temperature over specified temp.
6. Check clogging and short circuit of indoor/outdoor heat
exchanger.
7. Overcharge of refrigerant. Recharge
1. Check lock of fan motor.
2. Check power supply voltage between L2 and N.
AC198 to 264V
Displayed when
error is detected
P22
P22
Outdoor fan system error
Stop
3. Check outdoor P.C. board.
1. When performing operation while taking-off compressor
wire, P26 error occurs. Check control P.C. board
(MCC-1596).
Displayed when
error is detected
Short-circuit error of compressor
driving element
Stop
Stop
P26
P29
P26
P29
2. When performing operation while taking-off compressor
wire, an error does not occur. (Compressor rare short)
Displayed when 1. Check control P.C. board (MCC-1596).
error is detected
Position detection circuit error
– 38 –
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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
There are multiple main remote controllers.
(Detected by remote controller side)
Displayed when
error is detected
E09
L20
(Sub unit
Check that there are 1 main remote
controller and other sub remote controllers.
continues operation.)
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
Indoor Gr sub unit error
(Detected by central controller side)
Displayed when Check the check code of the corresponding
unit from remote controller.
(According
error is detected
Central controller
P30
to each case)
∗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.
– 39 –
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7-1-2. 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
– 40 –
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[E04 error]
NO
NO
NO
NO
Is group address setup of
remote controller correct?
Does outdoor operate?
Check CODE No. [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 CN67 normal?
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
– 41 –
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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
Is there no contact error
of indoor/outdoor inter-unit cable
(Signal line)?
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. (99)
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 CODE No. (DN)=11)
Is not yet capacity setting
of indoor unit set up?
NO
Check indoor P.C. board (MCC-1403).
Defect → Replace
– 42 –
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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
– 43 –
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[P10 error]
Is connection of
NO
float switch connector
(Indoor control board CN34)
normal?
Correct connection
of connector.
YES
NO
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 3
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 – 3 pin of CN068 on the indoor P.C. board is 220–240V.
[P01 error]
YES
Is there no connection error or
disconnection of CN083 connector?
Connect connector.
Correct the wiring circuit.
NO
NO
Is condenser normal?
Replace condenser.
Replace fan motor.
YES
YES
Is there no mechanical lock of the fan motor?
NO
Check indoor P.C. board (MCC-1403).
Defective → Replace
– 44 –
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[P19 error]
NO
Is operation of 4-way valve normal?
YES
NO
In heating mode,
4-way valve coil terminal 200V
YES
NO
Is circuit wiring normal?
YES
Check 4-way valve.
Defective → Replace
Check and correct circuit.
NO
Is refrigerant flow by PMV normal?
YES
Check and replace PMV.
NO
NO
Check CDB P.C. board.
YES
Are resistance value characteristics
of TC sensor normal?
YES
Check CDB P.C. board.
Defective → Replace
Replace TC sensor.
∗ Refer to temperature-Resistance value
characteristic table.
Check indoor P.C. board (MCC-1403).
Defective → Replace
• In cooling operation, the outdoor unit [P19 error] may be displayed when high pressure is abnormally up.
In this case, referring to item [P04 error], eliminate the pressure-up cause and then diagnose the error again.
– 45 –
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[F02 error]
NO
NO
Is connection of TC sensor connector
Correct connection of connector.
Replace TC sensor.
(CN101 on Indoor P.C. board) correct?
YES
Are characteristics of
TC sensor resistance value normal?
YES
∗ Refer to Charqacteristics-2.
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 Charqacteristics-2.
Check indoor P.C. board (MCC-1403).
Defect → Replace
– 46 –
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[C06 error] (1:1 model connection interface)
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
In case of 1:1 model connection interface
1:1 model connection interface (MCC-1440) CN51 and indoor P.C. board CN050.
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 wired 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 wired remote controller?
Check indoor P.C. board (MCC-1403).
Defect → Replace
YES
Check the power supply transformer of
1:1 model connection interface (MCC-1440).
Defective → Replace
– 47 –
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[E03 error] (Master indoor unit)
[E03 error] is detected when the indoor unit cannot receive a signal from the wired 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 wired remote controller and the
central controller.
[E01] is displayed on the wired 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 (D002) on indoor unit
P.C. board flashes with
1Hz for approx. 10 seconds.
[SET] is displayed on
wired remote controller.
[SETTING]
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 wired remote controller. (In this model, the mode
enters in automatic address set mode when the master unit detected [L03], [L07] or [L08] error.)
– 48 –
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Temperature – Resistance value characteristic table
Temperature sensorTA,TC,TCJ
Representative value
Resistance value (k
(Standard value)
33.80
Ω
)
Temperature
(°C)
(Minimum value)
32.33
(Maximum value)
35.30
0
10
20
25
30
40
50
60
70
80
90
100
19.63
20.35
21.09
12.23
12.59
12.95
9.75
10.00
10.25
7.764
7.990
8.218
5.013
5.192
5.375
3.312
3.451
3.594
2.236
2.343
2.454
1.540
1.623
1.709
1.082
1.146
1.213
0.7740
0.5634
0.8237
0.8761
0.6434
0.6023
TA,TC,TCJ sensors
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Temperature (˚C)
– 49 –
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Inspection of Fan Motor
Part name
Checking procedure
Measure the resistance value of each winding by using the tester.
Fan motor
STF200–370–4AR
Fan motor inside wiring diagram
Position
Black – Red
Resistance value
12.1 Ω
YEL
BLU
Black – White
Black – Yellow
Orange – White
Blue – White
12.4 Ω
ORN
3.94 Ω
BLK
WHI
GRY
RED
13.47 Ω
49F
15.02 Ω
Motor over heating protection switch
Under 20°C
– 50 –
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8. REPLACEMENT OF SERVICE P.C. BOARD
8-1. 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.)
– 51 –
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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
order. Specify the indoor unit No. to be replaced.
1. Change the CODE No. (DN) to 10 → 01 by pushing
button is pushed, the indoor unit No. under the group control is displayed in
/
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
DN
10
11
12
13
14
Contents
Type
are 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,
according 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.
– 52 –
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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
5. Select the capacity by pushing buttons for the timer setting.
(For example, 80 Type is set to “0012”. Refer to table 3)
/
buttons for the temperature setting.
/
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 pushing
CL
button if the CODE No. (DN) is not changed.
3 6 5 1 4 2
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Table 1
DN
01
02
03
Item
Filter sign lighting time
Filter pollution leve
Setting data
Factory-set value
Depending on Type
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.
0006
Concealed Duct High Static Type
RAV-SM∗∗∗DT-E (TR)
Table 3. Indoor unit capacity: CODE No. 11
Setting data
Type
Disable
224
0000∗
0021
0023
280
∗ EEPROM initial value on the P.C. board for indoor unit servicing.
– 54 –
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9. SETUP AT LOCAL SITE AND OTHERS
9-1. Indoor Unit
9-1-1. 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.)
9-1-2. 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 CODE No. (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 1 .
(If the forced defrost operation was executed once, setting of the above forced defrost operation is cleared.)
– 55 –
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9-1-3. LED Display on Indoor P.C. Board
1. D002 (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)
9-1-4. 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
UNIT LOUVER
2
Every pushing
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.
ò
TEMP.
3
4
5
Using the set temperature
buttons, specify the CODE No. (DN).
ò
TIME
Using the timer time
buttons, select the set data.
ò
SET
Push
button. (OK if indication lights)
• To change the selected indoor unit, proceed to Procedure
2
.
• To change item to be set up, proceed to Procedure
3
.
ò
TEST
6
Pushing
button returns the status to the normal stop status.
TEMP
ON / OFF
TIMER SET
FAN
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
– 56 –
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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
According to type
0005: Clogging sensor used
0001:No.1 unit
to
to
0064: No.64 unit
03
Central control address
0099:Undecided
0099:Undecided
0000:No shift
0002:+2°C
0001: +1°C
0002:+2°C
(Floor type 0000: 0°C)
06
10
Heating suction temp. shift
Type
0010: +10°C
(Up to +6 is recommended.)
0000:(1-way air discharge cassette)
According to model type
0001:(4-way air discharge cassette) to 0038
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.
width of cool → heat, heat →
0000:0 deg to
0020: 20 deg
1E
28
(Cool/heat are reversed with ± (Data value) /
2 against the set temperature)
0003:3 deg (Ts±1.5)
0000:None
cool mode selection control point
Automatic reset of power failure
0000:None
0001: Provided
0000:Filter input
Selection of option / error input
(CN70)
2A
0001:Alarm input (Air cleaner, etc.)
0002:Humidifier input
0002:Humidifier
0000:Indoor thermostat ON
Selection of thermostat output
2b
31
32
0000:Thermostat ON
0000:Impossible
(T10
)
ƒ
0001:ON receiving output of outdoor compressor
Fan (Single operation)
Sensor selection
0000:Impossible
0001: Possible
0000: Body TA sensor
0000:Body sensor
0001: Remote controller sensor
0000:No control
0001:Humidifier + Vaporizing type (Pump ON)
Humidifier control
(+Drain pump control)
(This function is not provided.)
0003:Humidifier ON
Pump OFF
40
60
0002:Humidifier + Supersonic type
(Pump ON when specified time elapsed)
0003:Humidifier + Natural drain type (Pump OFF)
0000:Operable
Timer setting
(Wired remote controller)
0000:Operable
0001:Operation prohibited
C2 Current demand X% to outdoor unit
0050:50%
to
0100: 100%
0075:75%
Existence of remote controller save
function
0000:Invalid (Impossible)
0001: Valid (Possible)
D0
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).
– 57 –
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9-1-5. Wiring and Setting of Remote Controller Control
2-remote controller control
(Setup method)
(Controlled by 2 remote controllers)
This control is to operate 1 or multiple indoor units
are operated by 2 remote controllers.
One or multiple indoor units are controlled by
2 remote controllers.
(Max. 2 remote controllers are connectable.)
(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
Change DIP switch inside of the rear side of the
remote controller switch from remote controller
master to sub. (In case of RBC-AMT32E)
Remote controller
switch (Master)
Remote controller
switch (Sub)
Sold
Sold
separately
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
Indoor unit
1 2 3
Master remote
controller
1
2
DIP switch
1
2
1 2 3
Outdoor unit
[Operation]
1. The operation contents can be changed by Last-
push-priority.
2. Use a timer on either Master remote controller or
Sub remote controller.
– 58 –
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9-1-6. 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>
TEST
CL
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 CODE No. 00
is displayed.
TEMP
ON / OFF
TIMER SET
TIME
FAN
SAVE
MODE
VENT
ò
TEMP.
2
Push temperature set
the CODE No. of data to be monitored.
buttons and then change
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
CODE No.
Data name
Unit
CODE No.
Data name
Unit
01
Room temperature
°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
∗ 07
∗ F2
F3
Indoor fan revolution frequency
rpm
∗ 6D
∗ 70
∗ 72
∗ 73
F1
Outdoor heat exchanger (Coil) temperature (TL)
Compressor operation frequency
°C
Indoor fan calculated operation time ×100h
rps
rpm
rpm
×100h
Filter sign time
×1h
°C
Outdoor fan revolution frequency (Lower)
Outdoor fan revolution frequency (Upper)
Compressor calculated operation time
∗ F8
Indoor discharge temperature*1
Item with ∗ marks are not provided to the Concealed Duct Type.
ò
UNIT LOUVER
3
4
Push
button to select the indoor unit to be monitored.
Each data of the indoor unit and its outdoor units can be monitored.
ò
TEST
Pushing
button returns the status to the usual display.
∗1 The indoor discharge temperature of CODE No. [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.
– 59 –
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n Calling of error history
<Contents>
The error contents in the past can be called.
<Procedure>
TEMP
ON / OFF
SET
TEST
1
Push
+
buttons simultaneously for 4 seconds or
more to call the service check mode.
Service Check goes on, the CODE No. 01 is displayed, and
then the content of the latest alarm is displayed.
TIMER SET
TIME
FAN
SAVE
MODE
VENT
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
The number and error contents of the indoor unit in which an
2 error occurred are displayed.
In order to monitor another error history, push the set
temperature
/
buttons to change the error
2 3 1
<Operation procedure>
history No. (CODE No.)
CODE No. 01 (Latest) → CODE No. 04 (Old)
1 2 3
NOTE : 4 error histories are stored in memory.
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.
– 60 –
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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 header / follower 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)
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) (Header / Follower)
(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.)
– 61 –
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9-2. Setup at Local Site / Others
Model name:TCB-PCNT30TLE2
9-2-1. 1:1 Model Connection Interface
1. Function
This model is an optional P.C. board to connect the indoor unit to 1:1 model connection interface.
2. Microprocessor block diagram
Indoor unit
Central controller
1:1 model connection interface
P.C. board
CN40
CN050
Indoor control
P.C. board
CN041
1:1 model
connection interface
communication circuit
CN51
Terminal
resistance
SW01
MCC-1440
Terminal block
(A, B)
1:1 model
connection interface
Communication units
Communication distance : 2000 m
: Total 64 units
Remote controller
3. 1:1 model connection interface wiring connection
CAUTION
1) When controlling customized setup collectively, 1:1 model connection interface (This option) is required.
2) In case of group operation, the 1:1 model connection interface is necessary to be connected to the main unit.
3) Connect the central control devices to the central control system wiring.
4) When controlling DI, SDI series 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 DI, SDI series, 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
Outdoor unit
Refrigerant line 2
Refrigerant line 3
1 2 3
1 2 3
1 2 3
Caution 3
Header
unit
Follower
unit
Indoor unit
U3 U4
1 2 3
A B
U3 U4
1 2 3
1 2 3
A B
A B
1:1 model connection interface
This product
(
)
Caution 1
Caution 2
sold separately
Remote controller
wiring
Remote controller
Remote controller
Remote controller
Group operation (Max. 8 units)
Indoor units in all refrigerant lines: Max.64 units
[If mixed with SMMS series (Link wiring), multi indoor units are included.]
* However group follower units of SDI, DI series are not included in number of the units.
– 62 –
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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.
If mixed in the SMMS system, the wire length is lengthened
with all indoor/outdoor inter-unit wire length at side.
No. of wires
Size
Up to 1000m: twisted wire 1.25mm2
Up to 2000m: twisted wire 2.0mm2
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
(DI, SDI) 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
Central control
system wiring
Caution 2
Caution 1
Outdoor unit
1
2
3
3
1
2
2
3
3
1
2
2
3
3
Header
unit
Follower
unit
Indoor unit
U3 U4
1
2
U3 U4
1
U3 U4
1
: 1:1 model connection interface
(This option)
A
B
A
B
A
B
Remote controller
Remote controller
Remote controller
(Group 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
Outdoor unit
Refrigerant line 2
Refrigerant line 3
1 2 3
1 2 3
1 2 3
Central control
system wiring
Indoor/outdoor inter-unit wire
(AC230V serial)
Header
unit
Follower
unit
U3 U4
1 2 3
A B
U3 U4
1 2 3
1 2 3
Indoor unit
A B
A B
1:1 model
connection interface
This product
Remote controller wiring
Remote controller
(
)
sold separately
Remote controller
Remote controller
Group operation (Max. 8 units)
Line address
SW01 Bit 1
SW01 Bit 2
Remarks
1
ON
OFF
2
OF
OFF
(OFF at shipment from factory)
(OFF at shipment from factory)
Turn SW01 Bit 1 to ON.
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
– 63 –
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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 1:1 model connection interface Installation Manual.
9-3. How to Set up Central Control Address Number
When connecting the indoor unit to the central control remote controller using 1:1 model connection interface, it
is necessary 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 CODE No. 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.)
• To change the item to be set up, return to Procedure 2.
(Fig.1)
TEST
Push
button.
The status returns to usual stop status.
(Table 1)
TEMP
ON / OFF
Setup data
Central control address No.
0001
0002
0003
:
1
2
TIMER SET
FAN
MODE
VENT
2
1
SAVE
3
1
3
FILTER
RESET TEST
:
SET
CL
SWING/FIX
UNIT LOUVER
0064
64
0099
Unset (Setup at shipment from factory)
4
5
– 64 –
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How to confirm the central control address (New function for AMT32E 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
3
After lighting display for 3 seconds, the display automatically disappears.
If any button is pushed during display, immediately the display disappears and then the pushed button is
displayed.
– 65 –
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10. ADDRESS SETUP
10-1. 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)
CODE No. Data at shipment
Setup data range
0001 (No. 1 unit) to 0030 (No. 30 unit)
Line address
12
13
0099
0099
Indoor unit
address
0001 (No. 1 unit) to 0064 (No. 64 unit)
Max. value of indoor units in the identical refrigerant line
0000 : Individual (Indoor units which are not controlled in a group)
0001 : Header unit (1 indoor unit in group control)
0002 : Follower unit (Indoor units other than master unit in group control)
Group address
14
0099
– 66 –
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10-2. Address Setup & Group Control
<Terminology>
Indoor unit No.
Group address
: N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64)
: 0 = Single (Not group control)
1 = Header unit in group control
2 = Follower unit in group control
Header unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals
to/from the remote controllers and follower 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)
Follower unit (= 2) : Indoor units other than header unit in group operation
Basically, follower units do not send/receive signals to/from the remote controllers.
(Except errors and response to demand of service data)
10-2-1. System Configuration
1. Single
Outdoor
1-1
Individual
Indoor
(Header/Master)
Remote controller
2. Single group operation
• Each indoor unit controls the outdoor unit individually.
2-1
Header/Sub
1-1
Header/Sub
4-1
3-1
Header/Sub
8-1
Header/Sub
Header/Master
– 67 –
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10-2-2. Automatic Address Example from Unset Address (No miswiring)
1. Standard (One outdoor unit)
1) Single
1-1
(Header/Master)
Individual
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
Header/Sub
1-1
Header/Sub
3-1
8-1
Header/Sub
Header/Master
(Max. : 8 units)
Only turning on source power supply (Automatic completion)
– 68 –
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10-3. Address Setup (Manual Setting from Remote Controller)
In case that addresses of the indoor units will be
determined prior to piping work after cabling work
• Set an indoor unit per a remote controller.
• Turn on power supply.
(Example of 2-lines cabling)
(Real line: Cabling, Broken line: Refrigerant pipe)
Outdoor Outdoor
1
2
3
1
2
3
1
2
3
1
2
3
Indoor
A B
Indoor
A B
2
1
2
Line address → 1
Indoor unit address → 1
Group address → 1
SET
CL
TEST
A B
1
2
Push
+
+
buttons simultaneously
for 4 seconds or more.
Remote controller
For the above example, perform setting by
connecting singly the wired remote controller
without remote controller inter-unit cable.
(← Line address)
Using the temperature setup
set 12 to the CODE No.
/
buttons,
Group address
Individual
: 0000
Header unit : 0001
Follower unit: 0002
In case of group control
3
4
5
Using timer time
/
buttons, set the line address.
SET
Push
button. (OK when display goes on.)
(← Indoor unit address)
Using the temperature setup
/
buttons, set 13 to the CODE No.
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 CODE No.
9
10
11
Using timer time
/
buttons, set 0000 to Individual, 0001 to Master unit, and 0002 to sub unit.
SET
Push
Push
button. (OK when display goes on.)
TEST
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
– 69 –
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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.
UNIT LOUVER
button.
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.
• Unit No. is displayed.
and
buttons simultaneously for
TEMP
ON / OFF
TIMER SET
TIME
FAN
SAVE
MODE
VENT
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
button, the unit numbers
in the group control are successively displayed.
• The unit No. displayed at the first time indicates the
master unit address.
2
<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.
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Owner’s Manual
Concealed Duct High Static Pressure
Concealed Duct High Static Pressure
Thank you for purchasing this Toshiba air conditioner.
Please read carefully through these instructions that contain important information which complies with the “Machinery”
Directive (Directive 2006/42/EC), and ensure that you understand them.
11. OWNER’S MANUAL
Some of the details provided in these instructions differ from the Installation Manual supplied with your product, and the
instructions provided here take precedence.
Original instruction
After reading these instructions, be sure to keep them in a safe place together with the Owner’s Manual and Installation
Manual supplied with your product.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner uses R410A an environmentally friendly refrigerant.
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
This appliance is not intended for use by person (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person.
When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the table
below.
Agent
Qualifications and knowledge which the agent must have
• Qualified installer
• The qualified installer is a person who installs, maintains, relocates and removes the air conditioners
made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate and
remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such operations by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to these operations.
Contents
1
2
3
4
5
6
7
8
9
PRECAUTIONS FOR SAFETY .......................................................................................... 4
PART NAMES.................................................................................................................... 7
WIRED REMOTE CONTROLLER ..................................................................................... 8
CORRECT USAGE........................................................................................................... 11
TIMER OPERATION......................................................................................................... 13
POWER SAVING MODE .................................................................................................. 14
ADVANCED SETTINGS ................................................................................................... 15
ENERGY SAVING RECOMMENDATIONS ...................................................................... 16
MAINTENANCE ............................................................................................................... 17
• The qualified installer who is allowed to do the electrical work involved in installation, relocation and
removal has the qualifications pertaining to this electrical work as stipulated by the local laws and
regulations, and he or she is a person who has been trained in matters relating to electrical work on the
air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in
such matters by an individual or individuals who have been trained and is thus thoroughly acquainted
with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualifications pertaining to this refrigerant handling and
piping work as stipulated by the local laws and regulations, and he or she is a person who has been
trained in matters relating to refrigerant handling and piping work on the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to working
at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has
been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• Qualified service
person
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair,
maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such operations by an individual or individuals who have been trained
and is thus thoroughly acquainted with the knowledge related to these operations.
10 AIR CONDITIONER OPERATIONS AND PERFORMANCE ........................................... 19
11 INSTALLATION ................................................................................................................ 20
12 TROUBLESHOOTING..................................................................................................... 21
13 SPECIFICATIONS ........................................................................................................... 22
• The qualified service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local
laws and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
acquainted with the knowledge related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work involved in
installation, repair, relocation and removal has the qualifications pertaining to this refrigerant handling
and piping work as stipulated by the local laws and regulations, and he or she is a person who has been
trained in matters relating to refrigerant handling and piping work on the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or
she has been instructed in such matters by an individual or individuals who have been trained and is
thus thoroughly acquainted with the knowledge related to this work.
– 1 –
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n Warning Indications on the Air Conditioner Unit
1
PRECAUTIONS FOR SAFETY
Warning indication
Description
WARNING
General
• Carefully read Owner’s Manual before starting the air conditioner.
There are many important things to keep in mind for daily operation.
WARNING
WARNING
Transportation and storage
• When transporting the air conditioner, wear shoes with additional protective toe caps.
• When transporting the air conditioner, do not take hold of the bands around the packing carton.
You may injure yourself if the bands should break.
• When stacking the packing cartons for storage or transportation, heed the precautions written on the packing cartons.
Failure to heed the precautions may cause the stack to collapse.
ELECTRICAL SHOCK HAZARD
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies
before servicing.
Disconnect all remote electric power supplies
before servicing.
Installation
• Only a qualified installer (*1) or qualified service person (*1) is allowed to carry out the electrical work of the air conditioner.
Under no circumstances must this work be done by an unqualified individual since failure to carry out the work properly may
result in electric shocks and/or electrical leaks.
• After the installation work has been completed, have the installer explain about the circuit breaker positions.
WARNING
WARNING
In the event that trouble has occurred in the air conditioner, set the circuit breaker to the OFF position, and contact a service person.
• If you install the unit in a small room, take appropriate measures to prevent the refrigerant from exceeding the limit concentration
even if it leaks. Consult the dealer from whom you purchased the air conditioner when you implement the measures.
Accumulation of highly concentrated refrigerant may cause an oxygen deficiency accident.
Moving parts.
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
Do not operate unit with grille removed.
Stop the unit before the servicing.
• Do not install the air conditioner in a location that may be subject to a risk of expire to a combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
Operation
• Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts.
Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the intake grille of the indoor unit or service
panel of the outdoor unit and do the work required.
• Inside the air conditioner are high-voltage areas and rotating parts.
Due to the danger of electric shocks or of your fingers or physical objects becoming trapped in the rotating parts, do not remove
the intake grille of the indoor unit or service panel of the outdoor unit.
When work involving the removal of these parts is required, contact a qualified installer or a qualified service person.
CAUTION
CAUTION
• Do not move or repair any unit by yourself. Since there is high voltage inside the unit, you may get electric shock when removing
the cover and main unit.
• Use of a stand more than 50 cm high to clean the filter of the indoor unit or to carry out other such jobs constitutes working at
heights. Due to the danger of falling off the stand and injuring yourself while working at heights, this kind of work should not be
done by unqualified individuals. When this kind of work must be carried out, do not do it yourself but ask a qualified installer or a
qualified service person to do it for you.
High temperature parts.
High temperature parts.
You might get burned when removing this panel.
You might get burned when removing this panel.
• Do not touch the aluminum fin of the outdoor unit. You may injure yourself if you do so.
If the fin must be touched, do not touch it yourself but contact a qualified installer or a qualified service person.
• Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall off of the outdoor unit and result in injury.
• Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner, otherwise it may
cause imperfect combustion.
CAUTION
CAUTION
• When the air conditioner is operated with a combustion appliance in the same place, be careful of ventilation to let fresh air enter
the room. Poor ventilation causes oxygen shortage.
• When the air conditioner is used in a closed room, be careful of sufficient ventilation of the room.
Poor ventilation causes oxygen shortage.
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
Repairs
• When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of burning,
abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner, do not
touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a qualified service person.
Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until
qualified service person arrives. Continuing to use the air conditioner in the trouble status may cause mechanical problems to
escalate or result in electric shocks, etc.
CAUTION
CAUTION
• If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF
position, and contact a qualified service person to have the repairs done.
BURST HAZARD
BURST HAZARD
Do not set the circuit breaker to the ON position until the repairs are completed.
Open the service valves before the operation,
otherwise there might be the burst.
Open the service valves before the operation,
otherwise there might be the burst.
• If you have discovered that there is a danger of the indoor unit’s falling, do not approach the indoor unit but set the circuit breaker
to the OFF position, and contact a qualified installer or a qualified service person to refit the unit.
Do not set the circuit breaker to the ON position until the unit has been refitted.
• If you have discovered that there is a danger of the outdoor unit’s toppling over, do not approach the outdoor unit but set the
circuit breaker to the OFF position, and contact a qualified installer or a qualified service person to have the improvements or
refitting done. Do not set the circuit breaker to the ON position until the improvements or refitting is completed.
– 3 –
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Relocation
n Information on theTransportation, Handling and Storage of the Carton
• When the air conditioner is to be relocated, do not relocate it yourself but contact a qualified installer or a qualified service
person. Failure to relocate the air conditioner properly may result in electric shocks and/or a fire.
Examples of indication on the carton
(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”
CAUTION
Symbol
Description
Symbol
Description
TO DISCONNECTTHE APPLIANCE FROMTHE MAINS SUPPLY
• This appliance must be connected to the mains by means of a switch with a contact separation of at least 3 mm.
• The installation fuse 25A must be used for the power supply line of this air conditioner.
Keep dry
Fragile
Do not drop
CAUTIONS ABOUT INSTALLATION (Be sure to confirm the following cautions.)
• Certainly lay the drain hose for perfect draining.
Bad drainage may cause flooding in the house and getting furniture wet.
• Make sure to connect the air conditioner to an exclusive power supply of the rated voltage, otherwise the unit may break
down or cause a fire.
Do not lay down
CAUTIONS ABOUT OPERATION
• Do not use this air conditioner for special purpose such as preserving food, precision instruments, art objects, breeding
animals, car, vessel, etc.
• Do not touch any switches with wet finger, otherwise you may get an electric shock.
• If the air conditioner will not be used for a considerably long time, turn off the main switch or the circuit breaker, for safety.
• To make the air conditioner operate in its original performance, operate it within the range of the operating temperature
specified in the instructions. Otherwise it may cause a malfunction, or water leak from the unit.
11
cartons
Stacking height
(12 cartons can be stacked in
this case)
Do not walk on this carton
• Prevent any liquid from falling into the remote controller. Do not spill juice, water or any kind of liquid.
This side up
Do not step
Handle with care
Other cautions
CAUTION
Injury possibility.
Description
CAUTION
Injury possibility.
Don’t hande with packing
band, or may get injured
in case of brolen band.
Don’t handle with packing band, or may get injured in case of broken band.
Stacking notice.
In case that cardboard boxes protrude out of pallet when stacking.
Lay a 10 mm thick plywood over the pallet.
– 5 –
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2
PART NAMES
3
WIRED REMOTE CONTROLLER
This remote controller can control the operation of up to 8 indoor units.
n Indoor unit
n Display section
Air discharge
Connect a discharge duct.
In the display illustration below all the icons are shown.
When the unit is in operation, only relevant icons will be displayed.
Display
section
• When turning on the leak breaker at the first time,
on the display part of the remote controller.
• While this icon is flashing, the model is being automatically confirmed.
flashes
Air intake
Connect a suction duct.
TEMP.
ON / OFF
Wait till
icon has disappeared to use the remote controller.
TIMER SET
TIME
FAN
SAVE
MODE
VENT
Operation
section
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
Electrical control box
The earth screw is provided in the
electrical control box.
11
12
10
3 4
Drain pan
Separate sold part
Remote controller
1
2
6
9
5
7
13
15
14
8
n Outdoor unit
Air intake
(Side and rear)
1 Operation mode
6 Timer mode display
The selected operation mode is displayed.
The selected timer mode is displayed.
2 Error display
7 Filter display
Displayed while the protective device works or a
error occurs.
Reminder to clean the air filter.
Front panel
8 Fan speed display
Fan speed is not adjustable. It is fixed to High.
(HIGH)
There is an earth screw, valves,
and electric parts inside.
3 SETTING display
Displayed during setup of the timer or other settings.
Air discharge
4 TEST run display
9 Set temperature display
Displayed during a test run.
The selected set temperature is displayed.
5 Timer display
10 Power saving mode display
Pipe cover
When an error occurs, error code is displayed.
Limits compressor speed (capacity) to save
energy.
Wire connection holes
Mounting leg
Refrigerant pipe connection
holes
– 7 –
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n Operation section
Push each button to select a desired operation.
• The control saves commands in memory and after the initial setting, there is no need for any additional settings unless
changes are desired. The air conditioner can be operated by pushing the
button.
11
12
10
3 4
5
6
1
2
5
6
7
1
2
7
9
9
8
10
13
15
3
4
11
14
8
12
11 UNIT No. display
13 Remote controller sensor display
1
button (Temperature set button)
Adjusts the set point.
Select the desired set point by pushing
TEMP. or TEMP.
9
button (Ventilation button)
Use when a power ventilation kit (locally procured)
is connected.
Displays the number of the indoor unit selected.
Displayed while the sensor of the remote
controller is used.
Also displays error code of indoor and outdoor
units.
.
• If “
” is displayed on the remote controller
when this button is pushed no vent kit connected.
14 Pre-heat display
Displayed when the heating mode is energized or
defrost cycle is initiated.
12 Central control display
2
3
4
button (Timer set button)
Use to setup the timer.
10
11
button (Power save operation)
Use to initiate power saving mode.
Displayed when the air conditioner is used under
the central control in combination with a central
control remote controller.
While this icon is displayed, the indoor fan stops.
button (Filter reset button)
Resets “ ” icon after cleaning filter.
15 No function display
button (Unit/Louver select button)
Selects a unit number (left) and louver number
(right).
In case the remote controller is disabled by the
central control system,
Displayed when the function requested is not
available on that model.
flashes.
button (Test button)
Use only for service.
(During normal operation, do not use this button.)
The button operation is not accepted.
UNIT:
Even when you push ON/OFF, MODE, or TEMP.
button, and the button operation is not accepted.
Selects an indoor unit when multiple indoor units
are controlled with one remote controller.
(Settings made by the remote controller vary with
the central control mode.
For details, refer to the Owner’s Manual of the
central control remote controller.)
5
button
When the button is pushed, the operation starts,
and it stops by pushing the button again.
LOUVER:
No Function.
When the operation has stopped, the operation
lamp and all the displays disappear.
12
button (Swing/Louver direction
button)
6 Operation lamp
No Function.
Green light illuminates when unit is on.
Although it flashes when operating the protection
device or an error occurs.
OPTION :
Remote controller sensor
Usually the temperature sensor of the indoor unit senses
the temperature.
The temperature on the surrounding of the remote
controller can also be sensed.
For details, contact the dealer from which you have
purchased the air conditioner.
7
8
button (Operation mode button)
Selects desired operation mode.
button (Fan speed button)
Fan speed is not adjustable.
It is fixed to High.
– 9 –
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n 8°C OPERATION (For object pre-heating)
4
CORRECT USAGE
• When you use the air conditioner for the first time or when you change the setting, follow the steps below. Settings are
(Available for Super Digital Inverter outdoor units)
The air conditioner can control the heating temperature to about 8°C in the heating mode.
saved in memory and are displayed anytime the unit is turned on by pushing the
button.
The 8°C heating operation requires settings with the wired remote controller. Ask the installer or dealer for the settings
according to the installation manual of the indoor unit.
n Preparation
Start
Turn on the main power switch and/or the leakage breaker.
• When the power supply is turned on, a partition line is displayed on the display part of the remote controller.
• After the power supply is turned on, the remote controller does not accept an operation for approx. 1 minute, but it is not a
failure.
1
2
Set the displayed temperature to 18°C in the heating mode by pushing TEMP.
Set the displayed temperature to 8°C by pushing TEMP.
button.
button for at least four seconds.
Stop
REQUIREMENT
1
Set the displayed temperature to 18°C by pushing TEMP.
button.
• The air conditioner returns to the normal HEAT mode. Select a desired temperature and operation mode.
• While using the air conditioner, operate it only with
leakage breaker.
button without turning off the main power switch and the
• When you re-power the air conditioner after it has not been used for a long period, turn on the leakage breaker at least
12 hours before starting the air conditioner. (This is required to turn on the compressor case heater for warming in order
to prevent overload on the compressor when activating the outdoor unit.)
NOTE
• The discharged air temperature is lower than that in the normal heating operation.
• The room temperature may not be heated evenly depending on the remote controller installation location.
• The room temperature may not reach 8°C depending on the room size or the installation conditions.
The 8°C heating operation is cancelled in the following cases.
Stop
Push
button.
• When operation is stopped with
• When another operation mode is selected with
button
button
The operation lamp goes off, and the operation stops.
• When temperature setting or operation mode is changed or operation is started/stopped by the wireless remote
controller or the central control remote controller.
• If one or more models other than the 4-way air discharge cassette type (4 series), slim duct, Concealed Duct High Static
Pressure are connected in the same control group, the 8°C heating operation is not available.
• When you use this operation mode, observe proper operating hours and we recommend that you ask service staff for
periodic maintenance of the air conditioner.
NOTE
ON / OFF
1
2
Auto Changeover
• When in Auto Mode, the unit selects the operating mode
(cooling, heating or fan only) based on the user selected
set point temperature.
3
DE
FILTER
RESET
• If the Auto mode is uncomfortable, you can select the
desired conditions manually.
Cooling
• If there is a demand for cooling, unit will start
approximately 1 minute after mode is selected.
Start
Heating
1 Push
button.
• If there is a demand for heating, unit will start
approximately 3 to 5 minutes after the mode is selected.
The operation lamp illuminates, and the
operation starts.
• After the heating operation has stopped, fan may continue
to run for approx. 30 seconds.
• When the room temperature reaches the set temperature,
the outdoor unit stops and the indoor unit will carry on fan
operation.
2 Select an operation mode with the
“
” button.
One push of the button, and the display
changes in the order shown below.
During defrost operation, the fan stops so that cool air is
not discharged. (“
” Pre-heat is displayed.)
When restarting the operation after stop
• When attempting to restart the unit immediately after it was
stopped, the unit can not start for approx. 3 minutes this is
to protect the compressor.
Cool
Fan
3 Select a desired set point by pushing
the “TEMP. ” or “TEMP. ” button.
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5
TIMER OPERATION
• Three timer modes are available: (Setting of up to 168 hours is enabled.)
Off timer : The unit stops when the set time is reached.
Repeat Off timer : The unit stops daily when the set time is reached.
6
POWER SAVING MODE
• The power saving mode saves energy by limiting the maximum current which will effect heating or cooling capacity that
the unit can generate.
On timer
: The unit starts when the set time is reached.
Push
button during operation.
• The air conditioner enters power saving mode.
appears on the display.
•
1
Power saving mode will stay in effect until it is cancelled.
To cancel the power saving mode, push button again.
2
4
•
disappears.
3
NOTE
3 Push
button.
icon disappears and time display goes on,
or icon flashes.
Set
1 Push
• When other electric appliances are used at the same time, to avoid triggering the circuit breaker, power saving mode is
recommended. Of course you can use power saving mode to save energy as well.
• Power saving mode consumes less energy, but may not heat/cool the room as much as normal mode.
(The maximum current is limited to approximately 75% (factory default) of the normal mode.)
•
and
button.
(When On timer is activated, time and On timer
are icons and other icons disappear.)
The timer mode changes with every push of the button.
• To adjust the power-save settings, see “Power saving mode” in ADVANCED SETTINGS.
• Even when operation start/stop, operation mode change, or power reset is performed during the power saving mode, the
power saving mode is retained until the next operation.
4 Cancel timer operation
Off
Off
On
Push
button.
(Off timer)
(Repeat Off timer)
No display
(On timer)
Timer icon disappears.
•
and timer display flashes.
NOTE
• When the operation stops after the timer reached the
preset time, the Repeat Off timer resumes the operation
2 Push
to select “set time”.
• With every push of
button, the set time
by pushing
the time of the timer has reached the set time.
• When you push while the Off timer function of
button and stops the operation after
increases by 0.5 hr (30 minutes).
When setting a time more than 24 hours for timer
operation, timer can be set in increments of 1 hr.
The maximum set time is 168hr (7 days).
The remote control displays the set time with time
(between 0.5 and 23.5 hours) (∗1) or number of days
and time (24 hours or more) (∗2) as shown below.
the air conditioner is active, the indication of the timer
function disappears and then appears again after about
5 seconds.
This is due to normal processing of the remote controller.
• With every push of
button, the set time
decreases by 0.5 hr (30 minutes)
(0.5 - 23.5 hours) or 1 hr (24 - 168 hours).
Example of remote control display
• 23.5 hours (∗1)
• 34hours (∗2)
Number of days Time
shows 1 day (24 hours).
shows 10 hours. (Total 34 hours)
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7
ADVANCED SETTINGS
8
ENERGY SAVING RECOMMENDATIONS
Select a comfortable set point and minimize adjusting it.
n Power saving mode
• Clean the filter when ever the filter display
• Keep doors and windows closed and open them only when necessary.
is illuminated on remote controller.
Clean, please.
• Use drapes, curtains, or shades to keep direct sun light from heating the room
on very hot days.
• Do not obstruct the return air grille.
Adjust the air flow direction for even air distribution in the room.
Checks before operating
• Check whether the earth wires are properly connected.
• Check whether the air filters are installed.
1
3
• Turn on the leakage breaker at least 12 hours before operating.
Protective device
• The protective device stops operation when the air conditioner is overloaded.
• When the protective device is activated, the current operation stops and the
2
4
5
operation lamp and
on the remote controller flash.
1 Push
button for at least four seconds when the air conditioner is not working.
, symbol, and numbers flash.
When the protective device is activated
• When the protective device has been activated and stopped operation, turn off the leakage breaker immediately, and ask
the installer to find the cause.
If the air conditioner is operated without fixing the problem, the air conditioner may malfunction.
• Check whether the air filters are installed.
If the air filters are not installed, the air heat exchanger may be clogged with dust, which may result in water leakage.
•
2 Push
(left side of the button) to select an indoor unit to be set.
• Each time you push the button, UNIT No. change
as follows:
UNITNo.
1-1
UNIT No.
1-2
UNIT No.
1-3
UNIT No.
1-4
For cooling
The fan of the selected unit runs.
• When the air inlet and/or outlet of the outdoor unit are blocked
• When the air outlet of the outdoor unit is continuously exposed to strong wind
3 Push TIME
/
buttons, to adjust the power saving mode setting.
• Each push of the button changes the power level
by 1% within the range from 100% to 50%.
For heating
• When the air filters are clogged with too much dust or dirt
• The factory default is 75%.
• When the suction port and/or discharge port of the indoor unit are blocked
Do not turn off the leakage breaker
• Do not turn off the leakage breaker during a test run of the air conditioner. Use the ON/OFF button on the air conditioner
instead to control the power.
Setting of power level in
power saving mode
4 Push
5 Push
button.
button to complete the setting.
– 15 –
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Maintenance List
9
MAINTENANCE
Part
Unit
Check (visual/auditory)
Maintenance
WARNING
Heat exchanger
Indoor/outdoor • Dust/dirt clogging, scratches • Wash the heat exchanger when it is clogged.
Cleaning the air filter and other parts of the air filter involves dangerous work in high places, so be sure
to have a qualified installer or qualified service person to do it. Do not attempt it by yourself.
• Take appropriate measures when abnormal sound is
Fan motor
Filter
Indoor/outdoor • Sound
generated.
• Wash the filter with water when it is contaminated.
Cleaning air filters
Clogged air filters will reduce the cooling and heating performance.
1
Indoor
Indoor
• Dust/dirt, breakage
• Replace it when it is damaged.
• Vibration, balance
• Replace the fan when vibration or balance is terrible.
• Brush or wash the fan when it is contaminated.
1 If “ ” is displayed on the remote controller, clean the air filters.
Fan
• Dust/dirt, appearance
2 When the cleaning of air filters has been completed, push
button.
• Fix or replace them when they are deformed or
damaged.
“
” disappears.
Air inlet/outlet grilles
Drain pan
Indoor/outdoor • Dust/dirt, scratches
2
CAUTION
• Dust/dirt clogging,
Indoor
• Clean the drain pan and check the downward slope
for smooth drainage.
drain contamination
Cleaning remote controller
• Use a dry cloth to wipe the remote controller.
Ornamental panel,
louvers
• Wash them when they are contaminated or apply
repair coating.
Indoor
• Dust/dirt, scratches
• Never use a damp cloth on the remote controller.
• Rust, peeling of insulator
• Peeling/lift of coat
• Do not use a chemically-treated duster for wiping or leave such materials on the unit for long.
It may damage or fade the surface of the unit.
Exterior
Outdoor
• Apply repair coating
• Do not use benzine, thinner, polishing powder, or similar solvents for cleaning.
These may cause the plastic surface to crack or deform.
Periodic check
Long-period use of the air conditioner may cause deterioration or failure of parts due to heat,
humidity, dust, and operating conditions, or may cause poor drainage of dehumidified water.
Preparing for long Shut Down Period
1) Clean the filters and reposition them in unit.
2) Operate the unit in fan mode for 3 or 4 hours to dry all internal parts.
3) Turn the unit off and disconnect the main power supply.
4) Before unit is turned on again, make sure the circuit breaker has been
turned on for at least 12 hours.
Check points before operation
1) Check that the air filters are installed.
2) Check that the air outlet or inlet is not blocked.
3) Turn on the main power switch or the circuit breaker for the main power supply to the air conditioner.
NOTE
For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use
be cleaned and maintained regularly to ensure efficient operation of the air conditioner.
When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended.
Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if
necessary.
As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and outdoor unit at least
once every 3 months. Ask a professional for this cleaning/maintenance work.
Such maintenance can extend the life of the product though it involves the owner’s expense.
Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leakage, and even
compressor failure.
– 17 –
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10
AIR CONDITIONER OPERATIONS AND
PERFORMANCE
11
INSTALLATION
Do not install the air conditioner in the following places
• Do not install the air conditioner in any place within 1 m from a TV, stereo, or radio set.
If the unit is installed in such place, noise transmitted from the air conditioner affects the operation of these appliances.
3 minutes protection function
3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main power switch/
circuit breaker is turned on for re-starting the air conditioner.
• Do not install the air conditioner near a high frequency appliance (sewing machine or massager for business use, etc.),
otherwise the air conditioner may malfunction.
• Do not install the air conditioner in a humid or oily place, or in a place where steam, soot, or corrosive gas is generated.
• Do not install the air conditioner in a salty place such as seaside area.
Power failure
• Do not install the air conditioner in a place where a great deal of machine oil is used.
• Do not install the air conditioner in a place where it is usually exposed to strong wind such as in seaside area.
• Do not install the air conditioner in a place where sulfureous gas generated such as in a spa.
• Do not install the air conditioner in a vessel or mobile crane.
• Do not install the air conditioner in an acidic or alkaline atmosphere
(in a hot-spring area or near a chemicals factory, or in a place subject to combustion emissions).
Power failure during operation will stop the unit completely.
• To restart the operation, push the ON/OFF button on the remote controller.
• Lightning or a wireless car telephone operating nearby may cause the unit to malfunction.
Turn off the main power switch or circuit breaker and then turn them on again.
Push the ON/OFF button on the remote controller to restart.
Corrosion may be generated on the aluminum fin and copper pipe of the heat exchanger.
• Do not install the air conditioner near an obstacle (air vent, lighting equipment, etc.) that disturbs discharge air.
(Turbulent airflow may reduce the performance or disable devices.)
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or
where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)
• Do not install the air conditioner over an object that must not get wet.
Heating characteristics
Preheating operation
The air conditioner will not deliver warm air immediately after it is turned on.
Warm air will start to flow out after approximately 5 minutes when the indoor heat exchanger warmed up.
(Condensation may drop from the indoor unit at a humidity of 80% or more or when the drain port is clogged.)
Warm air control (In heating operation)
When the room temperature has reached the set temperature while the outdoor unit is stopping, the indoor unit discharges
wind with a very small air volume.
• Do not install the air conditioner in a place where an organic solvent is used.
• Do not install the air conditioner near a door or window subject to humid outside air.
Condensation may form on the air conditioner.
• Do not install the air conditioner in a place where special spray is used frequently.
Defrosting operation
If the outdoor unit is frosted during the heating operation, defrosting starts automatically (for approximately 2 to 10 minutes)
to maintain the heating capacity.
• The fans in both indoor and outdoor units will stop during the defrosting operation.
Be careful with noise or vibrations
• Do not install the air conditioner in a place where noise by outdoor unit or hot air from its air outlet annoys your neighbors.
• Install the air conditioner on a solid and stable foundation so that it prevents transmission of resonating, operation noise
and vibration.
• During the defrosting operation, the defrosted water will be drained from the bottom plate of the outdoor unit.
• If one indoor unit is operating, some sound may be audible from other indoor units that are not operating.
Heating capacity
In the heating operation, the heat is absorbed from the outside and brought into the room.
This way of heating is called heat pump system. When the outside temperature is too low, it is recommended to use
another heating apparatus in combination with the air conditioner.
Attention to snowfall and freeze on the outdoor unit
• In snowy areas, the air inlet and air outlet of the outdoor unit are often covered with snow or frozen up.
If snow or freeze on the outdoor unit is left as it is, it may cause machine failure or poor warming.
• In cold areas, pay attention to the drain hose so that it perfectly drains water without water remaining inside for freeze
prevention. If water freezes in the drain hose or inside the outdoor unit, it may cause machine failure or poor warming.
Air conditioner operating conditions
For proper performance, operate the air conditioner under the following temperature conditions:
Outdoor temperature : –15°C to 46°C
Room temperature : 21°C to 32°C (Dry bulb temp.), 15°C to 24°C (Wet bulb temp.)
Cooling operation
Room relative humidity – less than 80 %. If the air conditioner operates in excess
[CAUTION]
of this figure, the surface of the air conditioner may cause dewing.
Outdoor temperature : –20°C to 15°C (Wet bulb temp.)
Heating operation
Room temperature : 15°C to 28°C (Dry bulb temp.)
If air conditioner is used outside of the above conditions, safety protection may work.
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12
TROUBLESHOOTING
13
SPECIFICATIONS
CAUTION
Sound power level (dB)
Model
Weight (Kg)
If any of the following conditions occur, turn off the main power supply switch and immediately contact the dealer :
• Switch operation does not work properly.
• The main power fuse often blows out, or the circuit breaker is often activated.
• A foreign matter or water fall inside the air conditioner.
Cooling
74
Heating
74
RAV-SM2242DT-E
RAV-SM2802DT-E
160
160
75
75
• When the air conditioner does not operate even after the cause of the protective device activation has been removed.
(The operation lamp and
on the remote controller are flashing.)
• Any other unusual conditions are observed.
Declaration of Conformity
Before you ask for servicing or repairs, check the following points.
Manufacturer:
Authorized
Toshiba Carrier Corporation
336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN
u Recheck
Nick Ball
Inoperative
Representative/TCF holder: Toshiba EMEA Engineering Director
Toshiba Carrier UK Ltd.
• The main power switch is turned off.
• The circuit breaker is activated to cut off power supply.
• The main power fuse has blown out.
Porsham Close, Belliver Industrial Estate,
PLYMOUTH, Devon, PL6 7DB.
Does not cool well or heat well
United Kingdom
• The air inlet and/or outlet of the outdoor unit is blocked.
Hereby declares that the machinery described below:
Generic Denomination: Air Conditioner
• Doors or windows are opened.
• The set temperature is too high (In cooling) or low (In heating).
u These are not failures.
Model/type:
RAV-SM2242DT-E,
RAV-SM2802DT-E,
RAV-SM2242DT-TR,
RAV-SM2802DT-TR
Indoor unit or outdoor unit makes a strange noise.
• When the temperature suddenly changes, the indoor or outdoor unit occasionally makes a strange noise because of
expansion/ contraction of parts or change of refrigerant flow.
• Air leaking noise is heard occasionally.
Commercial name:
Digital Inverter Series Air Conditioner
It is generated by the solenoid valve when it is actuated.
• A clattering sound is heard when the power is turned on.
It is generated by the outdoor unit during preparation for operation.
Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations transposing into
national law
The room air is smelly or a bad odor comes from the air conditioner.
• Smells impregnated in the walls‚ carpets, furniture, clothing, or furs, come out.
Complies with the provisions of the following harmonized standard:
EN 378-2: 2008
Outdoor unit is frosted in heating operation.
Water drains from outdoor unit.
• he outdoor unit is sometimes frosted in heating operation.
NOTE
In that case, the unit automatically performs defrosting (for 2 to 10 minutes) for increasing the heating efficiency.
• In defrosting operation, both the indoor and outdoor units stop air flow.
• Hiss sound is heard when flow of the refrigerant is changed for defrosting.
• Resultant water of automatic defrosting in heating operation drains from outdoor unit.
This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer’s consent.
Information according to EMC Directive 2004/108/EC
A white mist of chilled air or water is generated from the outdoor unit.
• When the indoor unit in cooling operation or the outdoor unit in defrosting operation occasionally steams.
Check these items. If any of these problems still remains, stop the operation, turn off the leakage breaker, and then
notifies the dealer of the serial number and details of the error. Never repair any part by yourself as it is dangerous.
(Name of the manufacture)
(Address, city, country)
TOSHIBA CARRIER CORPORATION
336 Tadehara, Fuji-shi, Shizuoka-ken
416-8521 Japan
When
and a combination of
and a number are displayed on the remote controller, also inform
,
,
,
or
(Name of the Importer/Distributor)
(Address, city, country)
TOSHIBA CARRIER UK Ltd.
the dealer of the display content.
Porsham Close, Belliver Industrial Estate, PLYMOUTH,
Devon, PL6 7DB. United Kingdom
– 21 –
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Thank you for purchasing this Toshiba air conditioner.
Please read carefully through these instructions that contain important information which complies with the “Machinery”
Directive (Directive 2006/42/EC), and ensure that you understand them.
12. INSTALLATION MANUAL
Some of the details provided in these instructions differ from the Installation Manual supplied with your product, and the
instructions provided here take precedence.
Original instruction
After reading these instructions, be sure to keep them in a safe place together with the Owner’s Manual and Installation
Manual supplied with your product.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner uses R410A an environmentally friendly refrigerant.
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person.
When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the table
below.
Agent
Qualifications and knowledge which the agent must have
Contents
• The qualified installer is a person who installs, maintains, relocates and removes the air conditioners
made by Toshiba Carrier Corporation.
1
2
3
4
5
6
7
8
9
PRECAUTIONS FOR SAFETY .......................................................................................... 5
ACCESSORY PARTS ......................................................................................................... 8
SELECTION OF INSTALLATION PLACE.......................................................................... 9
INSTALLATION ................................................................................................................ 11
FAN CHARACTERISTICS................................................................................................ 15
DRAIN PIPINGWORK ..................................................................................................... 18
REFRIGERANT PIPING AND EVACUATING .................................................................. 22
ELECTRICAL CONNECTION .......................................................................................... 25
APPLICABLE CONTROLS .............................................................................................. 28
He or she has been trained to install, maintain, relocate and remove the air conditioners made by Toshiba
Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or
individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these
operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation and
removal has the qualifications pertaining to this electrical work as stipulated by the local laws and
regulations, and he or she is a person who has been trained in matters relating to electrical work on the
air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in
such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with
the knowledge related to this work.
Qualified installer
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation,
relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as
stipulated by the local laws and regulations, and he or she is a person who has been trained in matters
relating to refrigerant handling and piping work on the air conditioners made by Toshiba Carrier
Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals
who have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to working at
heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
acquainted with the knowledge related to this work.
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation.
10 TEST RUN ........................................................................................................................ 35
11 MAINTENANCE ............................................................................................................... 36
12 TROUBLESHOOTING...................................................................................................... 38
He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to these operations.
• The qualified service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local
laws and regulations, and he or she is a person who has been trained in matters relating to electrical work
on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
acquainted with the knowledge related to this work.
Qualified service
person
• The qualified service person who is allowed to do the refrigerant handling and piping work involved in
installation, repair, relocation and removal has the qualifications pertaining to this refrigerant handling and
piping work as stipulated by the local laws and regulations, and he or she is a person who has been
trained in matters relating to refrigerant handling and piping work on the air conditioners made by Toshiba
Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or
individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or
she has been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
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Definition of Protective Gear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’
work clothing.
n Warning Indications on the Air Conditioner Unit
In addition to such normal protective gear, wear the protective gear described below when undertaking the special work
detailed in the table below.
Warning indication
Description
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric
shocks and other injuries.
WARNING
WARNING
Work undertaken
Protective gear worn
ELECTRICAL SHOCK HAZARD
ELECTRICAL SHOCK HAZARD
Protective gloves
“Safety” working clothing
All types of work
Disconnect all remote electric power supplies
before servicing.
Disconnect all remote electric power supplies
before servicing.
Gloves to provide protection for electricians and from heat
Insulating shoes
Electrical-related work
Clothing to provide protection from electric shock
Work done at heights (50 cm or more)
Transportation of heavy objects
Repair of outdoor unit
Helmets for use in industry
WARNING
WARNING
Shoes with additional protective toe cap
Gloves to provide protection for electricians and from heat
Moving parts.
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
Do not operate unit with grille removed.
Stop the unit before the servicing.
CAUTION
CAUTION
High temperature parts.
High temperature parts.
You might get burned when removing this panel.
You might get burned when removing this panel.
CAUTION
CAUTION
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
CAUTION
CAUTION
BURST HAZARD
BURST HAZARD
Open the service valves before the operation,
otherwise there might be the burst.
Open the service valves before the operation,
otherwise there might be the burst.
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Refrigerant piping
1
PRECAUTIONS FOR SAFETY
• Install the refrigerant pipe securely during the installation work before operating the air conditioner.
If the compressor is operated with the valve open and without refrigerant pipe, the compressor sucks air and the refrigeration
cycles is over pressurized, which may cause a injury.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.
WARNING
General
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas may be generated.
• Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to
install the air conditioner.
• Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner.
If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or
vibration may result.
• When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air
completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle.
Failure to purge the air completely may cause the air conditioner to malfunction.
• Nitrogen gas must be used for the airtight test.
• The charge hose must be connected in such a way that it is not slack.
• Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts.
Only a qualified installer (∗1) or qualified service person (∗1) is allowed to remove the intake grille of the indoor unit or
service panel of the outdoor unit and do the work required.
• Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker to the OFF
position. Otherwise, electric shocks may result.
• Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removal work is
being carried out. There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
• Only a qualified installer (∗1) or qualified service person (∗1) is allowed to undertake work at heights using a stand of
50 cm or more or to remove the intake grille of the indoor unit to undertake work.
• Wear protective gloves and safety work clothing during installation, servicing and removal.
• Do not touch the aluminium fin of the outdoor unit. You may injure yourself if you do so.
If the fin must be touched for some reason, first put on protective gloves and safety work clothing, and then proceed.
• Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall off of the outdoor unit and result in injury.
• When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in the
ladder’s instructions. Also wear a helmet for use in industry as protective gear to undertake the work.
• When cleaning the filter or other parts of the outdoor unit, set the circuit breaker to OFF without fail, and place a “Work in
progress” sign near the circuit breaker before proceeding with the work.
• When working at heights, put a sign in place so that no-one will approach the work location, before proceeding with the work.
Parts and other objects may fall from above, possibly injuring a person below.
• The refrigerant used by this air conditioner is the R410A.
• You shall ensure that the air conditioner is transported in stable condition.
• Do not move or repair any unit by yourself. There is high voltage inside the unit.
You may get electric shock when removing the cover and main unit.
• If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may be generated.
Electrical wiring
• Only a qualified installer (∗1) or qualified service person (∗1) is allowed to carry out the electrical work of the air conditioner.
Under no circumstances must this work be done by an unqualified individual since failure to carry out the work properly may
result in electric shocks and/or electrical leaks.
• When connecting the electrical wires, repairing the electrical parts or undertaking other electrical jobs, wear gloves to provide
protection for electricians and from heat, insulating shoes and clothing to provide protection from electric shocks.
Failure to wear this protective gear may result in electric shocks.
• Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and laws.
Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage, smoking and/or a fire.
• Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
• Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for telephone wires.
• After completing the repair or relocation work, check that the ground wires are connected properly.
• Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the local regulations and laws.
• Install the circuit breaker where it can be easily accessed by the agent.
• When installing the circuit breaker outdoors, install one which is designed to be used outdoors.
• Under no circumstances must the power cable be extended.
Connection trouble in the places where the cable is extended may give rise to smoking and/or a fire.
• Electrical wiring work shall be conducted according to law and regulation in the community and installation manual.
Failure to do so may result in electrocution or short circuit.
Test run
• Before operating the air conditioner after having completed the work, check that the electrical parts box cover of the indoor unit
and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position.
You may receive an electric shock if the power is turned on without first conducting these checks.
• When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of burning,
abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner, do not
touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a qualified service person.
Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until
qualified service person arrives.
Selection of installation location
• If you install the unit in a small room, take appropriate measures to prevent the refrigerant from exceeding the limit
concentration even if it leaks.
Consult the dealer from whom you purchased the air conditioner when you implement the measures.
Accumulation of highly concentrated refrigerant may cause an oxygen deficiency accident.
• Do not install the air conditioner in a location that may be subject to a risk of exposure to a combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
Continuing to use the air conditioner in the trouble status may cause mechanical problems to escalate or result in electric shocks, etc.
• After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 2 MΩ or more
between the charge section and the non-charge metal section (Earth section).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
• Upon completion of the installation work, check for refrigerant leaks and check the insulation resistance and water drainage.
Then conduct a test run to check that the air conditioner is operating properly.
• When transporting the air conditioner, wear shoes with additional protective toe caps.
• When transporting the air conditioner, do not take hold of the bands around the packing carton.
You may injure yourself if the bands should break.
• Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure themselves or receive
electric shocks if they poke their fingers or other objects into the indoor unit while the air conditioner is running.
• Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner, otherwise it
may cause imperfect combustion.
Explanations given to user
• Upon completion of the installation work, tell the user where the circuit breaker is located.
If the user does not know where the circuit breaker is, he or she will not be able to turn it off in the event that trouble has occurred
in the air conditioner.
• If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF
position, and contact a qualified service person (∗1) to have the repairs done.
Do not set the circuit breaker to the ON position until the repairs are completed.
• After the installation work, follow the Owner’s Manual to explain to the customer how to use and maintain the unit.
Installation
• When the indoor unit is to be suspended, the designated hanging bolts (M10 or W3/8) and nuts (M10 or W3/8) must be used.
• Install the air conditioner at enough strong places to withstand the weight of the unit.
If the strength is not enough, the unit may fall down resulting in injury.
• Follow the instructions in the Installation Manual to install the air conditioner. Failure to follow these instructions may
cause the product to fall down or topple over or give rise to noise, vibration, water leakage, etc.
• The designated bolts (M10, M12) and nuts (M10, M12) for securing the outdoor unit must be used when installing the unit.
Relocation
• Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner.
It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury, water
leakage, noise and/or vibration may result.
• When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air, etc. to be
sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in rupture, injury
or other trouble.
• Install the outdoor unit property in a location that is durable enough to support the weight of the outdoor unit.
Insufficient durability may cause the outdoor unit to fall, which may result in injury.
(∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”
– 5 –
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CAUTION
2
ACCESSORY PARTS
New Refrigerant Air Conditioner Installation
Part name
Q’ty
Shape
Usage
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE
LAYER.
(Be sure to hand over to customers)
(For other languages that do not appear in this Installation Manual,
please refer to the enclosed CD-R.)
• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is approx.
1.6 times higher than that of refrigerant R22.
Installation Manual
1
This manual
Accompanied with the new refrigerant, refrigerating oil has also been changed. Therefore, during installation work, be
sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.
Owner’s Manual
1
(Be sure to hand over to customers)
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of the
main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.
1
1
For heat insulation of Gas pipe connecting section
For heat insulation of Liquid pipe connecting section
Heat insulator
To Disconnect the Appliance from Main Power Supply.
• This appliance must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm.
• The installation fuse must be used for the power supply line of this conditioner.
Joint (Ø22.2 – Ø28.6 mm)
1
For connecting the gas side pipe
– 7 –
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n Installation space
(Unit: mm)
3
SELECTION OF INSTALLATION PLACE
Reserve space required for maintenance the indoor unit and service work.
Upon approval of the customer, install the air conditioner in a place that satisfies the following
conditions.
• Place where the unit can be installed horizontally.
200 or more Servicing space
• Place where a sufficient servicing space can be ensured for safety maintenance and check.
• Place where drained water will not cause any problem.
Avoid installing in the following places.
• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide gas (hot spring).
(Should the unit be used in these places, special protective measures are needed.)
Concealed duct
high static
pressure
• A restaurant kitchen where a lot of oil is used or place near machines in a factory
(Oil adhering to the heat exchanger and resin part (fan) in the indoor unit may reduce the performance, generate mist or
dew drop, or deform or damage resin parts.)
• Place where organic solvent is used nearby.
• Place close to a machine generating high frequency.
• Place where the discharged air blows directly into the window of the neighbour house. (Outdoor unit)
1000 or more
Check port with carrying
in port 600 × 600
Air flow direction
• Place where noise of the outdoor unit is easily transmitted.
(When install the outdoor unit on the boundary with the neighbour, pay due attention to the level of noise.)
• Place with poor ventilation.
(Before air duct installation, check whether value of air volume, static pressure and duct resistance are correct.)
<Installation example>
Concealed duct
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or
where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)
• Place where any of high-frequency appliances (including inverter devices, private power generators, medical equipment,
and communication equipment) and inverter-type fluorescent light is installed.
Filter chamber
Air inlet chamber
high static pressure
Air outlet chamber
(A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances/equipment may occur.)
• When the wireless remote controller is used in a room equipped with an inverter-type fluorescent light or at a place
exposed to direct sunlight, signals from the remote controller may not be received correctly.
• Place where organic solvent is used.
• Place where special spray is used frequently.
Duct hose
Duct hose
n Installation under high-humidity atmosphere
In some cases including the rainy season, especially inside of the ceiling may become high-humidity atmosphere
(dew-point temperature: 23°C or higher).
1. Installation to inside of the ceiling with tiles on the roof
Duct hose
2. Installation to inside of the ceiling with slated roof
3. Installation to a place where inside of the ceiling is used for pathway to intake the fresh air
Air flow direction
• In the above cases, additionally attach the heat insulator to all positions of the air conditioner, which come to contact
with the high-humidity atmosphere. In this case, arrange the side plate (Check port) so that it is easily removed.
• Apply also a sufficient heat insulation to the duct and connecting part of the duct.
REQUIREMENT
[Reference]
Condensation test conditions
Indoor side: 27°C dry bulb temperature
24°C wet bulb temperature
Air volume: Low air volume, operation time 4 hours
1. Attach the optional accessories (drain-up kit etc.) on the unit before installing the unit.
Also, set the check port with carrying in port to the side surface of the unit except air inlet panel.
2. Prepare the check port with carrying in port hole with the size of 600x600mm.
n Filter cleaning sign term setting
The lighting term setup of the filter sign (Notification of filter cleaning) of the remote controller can be changed according to
the condition of installation. For setup method, refer to “Filter sign setting” and “To secure better effect of heating” in the
Applicable controls of this Manual.
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n Installation of hanging bolt
n Installation of indoor unit
4
INSTALLATION
• Consider the piping/wiring after the unit is hung when
determining the location of the indoor unit installation
and orientation.
Treatment of ceiling
The ceiling differs according to structure of building.
WARNING
For details, consult your constructor or interior finish
contractor.
In the process after the ceiling board has been removed, it
is important to reinforce ceiling foundation (frame) and to
keep horizontal level of installed ceiling correctly in order
to prevent vibration of ceiling board.
• Attach the nuts and the M10 flat washers to the hanging
bolt.
• Put washers at up and down of the hanging bracket of
the indoor unit to hang down the indoor unit.
• After the location of the indoor unit installation has been
determined, install hanging bolts.
• For the dimensions of the hanging bolt pitches, refer to
the external view.
• When a ceiling already exists, lay the drain pipe,
refrigerant pipe, system interconnection wires, and
remote controller wires to their connection locations
before hanging the indoor unit.
Procure hanging bolts washer and nuts for installing the
indoor unit (these are not supplied).
• Install the air conditioner certainly to sufficiently withstand the weight.
• If the strength is insufficient, the unit may fall down resulting in human injury.
• Perform a specified installation work to guard against strong wind or earthquake.
• An incomplete installation can cause accidents by the units falling and dropping.
REQUIREMENT
Strictly comply with the following rules to prevent damage of the indoor units and human injury.
• Do not put a heavy article on the indoor unit. (Even units are packaged)
• Carry in the indoor unit as it is packaged if possible.
If carrying in the indoor unit unpacked by necessity, be sure to use buffering cloth, etc. to not damage the unit.
• To move the indoor unit, hold the hooking metals (4 positions) only.
• Using a level vial, check that four sides are horizontal.
(Horizontal degree: Within 5mm)
Hanging bolt
Nut
M10 or W3/8
M10 or W3/8
M10
4 pieces
12 pieces
8 pieces
Washer
Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, or resin parts, etc.).
• Hanging bolt pitch of air inlet chamber side is different (centre position), make sure not to make mistake to install the
setting direction.
• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specified.
Hanging bolt
M10 flat washer
(W3/8 or M10)
Installation of hanging bolt
Use M10 hanging bolts (4 pcs, to be local procure).
Matching to the existing structure, set pitch according to
size in the unit external view as shown below.
Nut
(W3/8 or M10)
M10 flat washer
Nut
(W3/8 or M10)
n External Dimensions
(Unit: mm)
New concrete slab
Install the bolts with insert brackets or anchor bolts.
• Check that four sides are horizontal using a level vial.
(Horizontal degree: Within 5mm)
Rubber
Anchor bolt
(Blade type (Slide type (Pipe hanging
bracket)
bracket)
anchor bolt)
REQUIREMENT
• Hang the unit in a horizontal position.
Steel flame structure
When unit is hanged to slant, it may cause overflow of
drainage.
• Install the unit within the dimension according to the
figure below.
• Using level vial or vinyl hose to confirm whether the unit
is hang horizontally.
Use existing angles or install new support angles.
Hanging bolt
4-M10 hanging bolt
(Local procure)
1288 (Hanging bolt pitch)
1328
Hanging bolt
Support angle
Electrical control box
Side view
Front view
Existing concrete slab
Refrigerant pipe connecting port
(Gas side Ø22.2 Brazed)
Refrigerant pipe connecting port
(Liquid side Ø12.7 Flared)
Water pouring
Vinyl hose
Use a hole-in anchors, hole-in plugs, or a hole-in bolts.
1250
Set the drain pipe connecting
port side within 5mm lower
than opposite side.
Set the air inlet and air outlet
sides are within 5mm with
each other.
22
Drain pipe
connecting port
624
698
46
65
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n Diagrams for making connecting flanges
(Unit: mm)
n Duct design
The connecting flange (Incl. the fixing screw) is not supplied to the indoor unit.
When the connecting flange is necessary, produce them in locally.
Drawing figure is as follows. (Material: Galvanized steel plate, thickness of 1.6 mm)
1. In order to prevent short circuits, design the duct installation, so that the intake and discharge openings are not adjacent
to each other.
2. The indoor unit does not have a built-in air filter. Make sure to set up the filter chamber etc. and install the air filter
(Locally procured).
<Air outlet port flange>
If no air filter is installed, the heat exchanger will be blocked by dust, which may cause the malfunction of air conditioner
or the water leakage.
<Duct installation example (First floor)>
1130
65
250
250
250
250
65
Air outlet chamber
(with heat insulation)
High efficiency filter
inserting port
Air outlet port
connecting flange
Pre filter
1080
inserting port
Flexible duct hanging band
Duct hose (with heat insulation)
Air inlet port
connecting flange
25
25
Indoor unit
10-Ø8 hole
<Air inlet port connecting flange>
Electrical
control box
Filter
Air inlet
chamber chamber
1130
65
250
250
250
250
65
Ceiling
Duct hose
1080
Air outlet port
Air outlet port
Check port or carrying
in port (600 × 600)
25
25
Check port cap
To ground floor
From ground floor
10-Ø8 hole
NOTE
All duct connection between units except outdoor unit must be procured and enforced locally.
– 13 –
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5
FAN CHARACTERISTICS
Current value as a criterion, adjust the air volume value to become within the range of the chart below.
<RAV-SM2242 Type>
<RAV-SM2802 Type>
Standard air volume: 3600m³/h
8
Standard air volume: 4200m³/h
8.5
8
7.5
7
7.5
7
6.5
High static pressure tap (50Hz)
6.5
6
High static pressure tap (50Hz)
6
5.5
5
Medium static pressure tap (50Hz)
Low static pressure tap (50Hz)
Medium static pressure tap (50Hz)
Low static pressure tap (50Hz)
5.5
5
4.5
4.5
4
4
300
250
200
150
100
350
300
250
200
150
100
High static pressure tap (50Hz)
Medium static pressure tap (50Hz)
Low static pressure tap (50Hz)
50
5
High static pressure tap (50Hz)
Medium static pressure tap (50Hz)
50
5
2800
3000
3400
3800
4200 4400
4320
2880
Lower limit of air volume
3200
3600
Air volume (m³/h)
4000
Low static pressure tap (50Hz)
Upper limit of air volume
3200 3400
3800
4200
4600
5000 5200
4800 5040
3360
3600
4000
4400
Lower limit of air volume
Air volume (m³/h)
Upper limit of air volume
REQUIREMENT
Add a air volume damper to the air supply duct, and adjust the air volume in the range from 80% to 120% of the standard
air volume.
– 15 –
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n Wire connection change of fan motor
6
DRAIN PIPING WORK
This duct is composed of 3 fan motors.
To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are
connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal.
CAUTION
The wires of the fan motor has been connected to (F2) [External static pressure 137Pa (14mmAq)] as factory default.
Following the Installation Manual, perform the drain piping work that water is properly drained, and apply a heat
insulation not to cause a dew condensation.
Low static pressure (F1)
Inappropriate piping work may cause the water leakage in the room and wet of furniture.
YEL : Yellow
FM
FM
FM
BLU : Blue
REQUIREMENT
ORG : Orange
Fan motor
Fan motor
Fan motor
• The drain piping flows the natural drainage. Make sure to set the drain piping from the unit with descending slope of 1/50
to 1/100 and do not make up-down or trap in the midway.
• Set the horizontal pulling of the drain pipe to 20m or less. When drain piping is too long, attach the support bracket at
intervals of 1.5m to 2m to avoid the pipe becomes undulant as shown in figure below.
F
1
F2
F3
F4
F1 F2 F3 F4
F1 F2 F3 F4
<Example for installation of the main piping (Incl. piping support)>
FAN3
FAN2
FAN1
Standard (Middle) static pressure (F2)
Fan tap changing terminal block
Electrical control box
As long as possible
1.5 to 2 m
FM
FM
FM
Up-down bend
Control
P.C. board
Fan motor
Fan motor
Fan motor
4P terminal block
3P terminal block
Trap
Descending slop of
1/50 to 1/100
Descending slop of
1/50 to 1/100
VP-30
F1 F2 F3 F4
F1 F2 F3 F4
F1 F2 F3 F4
FAN2
FAN1
FAN3
2P terminal block
High static pressure (F3)
• Be sure to connect the drain pipe to the air conditioner with adhesive to avoid water leakage from the joint portion.
• Condensation may occur on the drain pipes including collective pipes.
All drain pipes must be wrapped with heat insulator to prevent dew condensation.
Especially a part where drain pipe is connected to the indoor unit must be firmly insulated with the provided heat insulator.
FM
FM
FM
Fan motor
Fan motor
Fan motor
F1 F2 F3 F4
F1 F2 F3 F4
F1 F2 F3 F4
FAN2
FAN1
FAN3
Terminal block No.
Fan motor wiring
External static pressure Pa (mmAq)
Remarks
Yellow
Low static pressure
F1
69 (7)
Blue
F2
F3
137 (14)
196 (20)
Factory default
Middle static pressure
Orange
High static pressure
∗ Do not use F4.
NOTE
When the external static pressure is changed, write down the static pressure once change in the wiring diagram of the
indoor unit is made.
– 17 –
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n Pipe material, size and insulator
n Check the draining
The following materials for piping work and insulating process are procured locally.
Check if the water can flow out properly during the test run. Also, check if no water leakage from the piping connection port.
Hard vinyl chloride pipe socket for VP25
REQUIREMENT
Pipe material
Hard vinyl chloride pipe VP25 (Nominal outer diameter Ø32mm)
Foamed polyethylene foam, thickness: 10mm or more
• Do drain test even if installation of heating season.
• Pour water into the drain pan port of the air inlet port gently using the kettle or hose when duct is not connected to the
drain pipe. When duct is connected to the drain pipe, remove the Access plate and perform it.
Insulator
Access plate
n Connecting drain pipe
REQUIREMENT
• Using adhesive agent for vinyl chloride, connect the hard vinyl chloride pipes certainly so that water does not leak.
• It takes some time to dry and indurate the adhesive agent. (Refer to the manual of adhesive agent.)
Do not apply any extra force on the connecting section until the adhesive agent dried.
n Drain up
Pour into the drain pan with a hose
or other materials.
• When install the drain up kit of optional accessory, read the Installation Manual supplied to a drain up kit.
– 19 –
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n Heat insulating process
7
REFRIGERANT PIPING AND EVACUATING
• After drain check, covering the heat insulator for drain connecting section, wrap the drain pipe with heat insulator
(Locally procured) without clearance from the end of the drain pipe connecting port of the indoor unit.
n Refrigerant Piping
n Liquid side refrigerant pipe
connection
1. If the outdoor units are to be mounted on a wall, make
sure that the supporting platform is sufficiently strong.
The platform should be designed and manufactured to
maintain its strength over a long period of time, and
sufficient consideration should be given to ensuring that
the outdoor unit will not fall.
2. Use general copper pipes with a wall thickness of
0.8 mm for Ø12.7 mm, and with a wall thickness of
1.0 mm for Ø28.6 mm (half hard).
Do not use any copper pipes with a wall thickness
less than these thicknesses.
Permissible Piping Length and Height
Difference
They vary according to the outdoor unit.
For details, refer to the Installation Manual attached to
the outdoor unit.
Drain pipe
connecting port
Heat insulation (Locally procured)
Thickness 10mm or more
Indoor unit
Flaring
• Cut the pipe with a pipe cutter.
Remove burrs completely.
Remaining burrs may cause gas leakage.
• Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured for
R410A are recommended.
3. Flare nut and flare works are also different from those of
the conventional refrigerant.
Take out the flare nut attached to the main unit of the air
conditioner, and use it.
REQUIREMENT
B
However, the conventional tools can
be used by adjusting projection
margin of the copper pipe.
When the refrigerant pipe is long, provide support brackets
at intervals of 2.5 to 3 m to clamp the refrigerant pipe.
Otherwise, abnormal sound may be generated.
u Projection margin in flaring: B (Unit: mm)
Rigid (Clutch type)
CAUTION
IMPORTANT 4 POINTS FOR PIPING WORK
1. Remove dust and moisture from the inside of the
connecting pipes.
R410A tool used Conventional tool used
Outer dia. of
copper pipe
R410A
R410A
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes using VACUUM
PUMP.
12.7
0 to 0.5
1.5 to 2.0
4. Check the gas leakage. (Connected points)
u Flaring dia. meter size: A (Unit: mm)
+0
A
–0.02” (–0.4)
Outer dia. of copper pipe
n Pipe size
R410A
16.6
12.7
Gas side
Liquid side
Pipe size
28.6 mm
12.7 mm
A
∗ In case of flaring for R410A with the
conventional flare tool, pull it out approx.
0.5 mm more than that for R22 to adjust to
the specified flare size.
The copper pipe gauge is useful for
adjusting projection margin size.
– 21 –
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Tightening connection
CAUTION
Refrigerant amount to be added
For addition of the refrigerant, add refrigerant “R410A”
referring to the attached Installation Manual of outdoor unit.
Heat insulation process
Apply heat insulation for the pipes separately at liquid
side and gas side.
n Gas side refrigerant pipe
connection
Be sure to use a scale to charge the refrigerant of specified
amount.
For the heat insulation to the pipes at gas side, be sure to
use the material with heat-resisting temperature 120°C or
higher.
Using the attached heat insulation material, apply the
heat insulation to the pipe connecting section of the
indoor unit securely without gap.
• Turn up the pipe heat insulator to the unit side.
• Wrap the pipe with wet cloth.
Do not apply excessive torque. Otherwise, the
nut may crack depending on the conditions.
Turn up pipe heat insulator
(Unit: N•m)
REQUIREMENT
• Charging an excessive or too little amount of refrigerant
causes a trouble of the compressor.
Be sure to charge the refrigerant of specified amount.
• A personnel who charged the refrigerant should write
down the pipe length and the added refrigerant amount in
the nameplate attached to the service panel of the
outdoor unit.
It is necessary to fix the compressor and refrigeration
cycle malfunction.
Outer dia. of copper pipe
Tightening torque
Wet cloth
12.7 mm (dia.)
50 to 62 (5.0 to 6.2 kgf•m)
REQUIREMENT
Remove the all brazed part.
• Apply the heat insulation to the pipe connecting section
of the indoor unit securely up to the root without
exposure of the pipe.
(The pipe exposed to the outside causes water leak.)
• Wrap heat insulator with its slits facing up (ceiling side).
u Tightening torque of flare pipe connections
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times)
Therefore, using a torque wrench, tighten the flare pipe
connecting sections which connect the indoor and
outdoor units of the specified tightening torque.
Incorrect connections may cause not only a gas leak,
but also a trouble of the refrigeration cycle.
• Remove the cup on the gas side piping by using a
brazing machine.
CAUTION
Do not burn the pipe heat insulator.
Remove the cap.
Indoor unit
Union
Open the valve fully
Open the valve of the outdoor unit fully.
Align the centres of the connecting pipes and tighten
the flare nut as far as possible with your fingers.
A 4mm-hexagonal wrench is required for opening the valve.
For details, refer to the Installation Manual attached to the
outdoor unit.
Then tighten the nut with a spanner and torque wrench
as shown in the figure.
Attached joint part
Half union
Flare nut
Connection pipe
Locally procured
Ø28.6 mm
Gas leak check
Heat insulator
of the pipe
Check with a leak detector or soap water whether gas leaks
or not, from the pipe connecting section or cap of the valve.
Externally
threaded side
Internally
threaded side
• Braze the attached joint part to the gas side piping and
braze the connection piping to the joint part.
Heat insulation
(Accessory)
Flare nut
Use a wrench to secure. Use a torque wrench to tighten.
REQUIREMENT
Brazing
Use a leak detector manufactured exclusively for HFC
refrigerant (R410A, R134a, etc.).
REQUIREMENT
Braze all around
Brazing
Tightening with an excessive torque may crack the nut
depending on installation conditions.
Tighten the nut within the specified tightening torque.
• Turn back the pipe heat insulator and tie up with a
banding band.
Tie up with a banding band.
Piping with outdoor unit
• For details of installation, refer to the Installation Manual
of the outdoor unit.
n Evacuation
Using a vacuum pump, perform vacuuming from the
charge port of valve of the outdoor unit.
For details, follow to the Installation Manual attached to the
outdoor unit.
• Never use the refrigerant sealed in the outdoor unit for
evacuation.
REQUIREMENT
For the tools such as charge hose, etc., use those
manufactured exclusively for R410A.
– 23 –
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n Wire connection
8
ELECTRICAL CONNECTION
Remote controller wiring
WARNING
REQUIREMENT
2-core non polarity wire is used for the remote controller
wiring.
• Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Be sure to pass the wires through the bushing of wire connection holes of the indoor unit.
• Keep a margin (Approx. 100mm) on a wire to hang down the electrical control box at servicing, etc.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
1. Using the specified wires, ensure to
connect the wires, and fix wires securely so
that the external tension to the wires do not
affect the connecting part of the terminals.
Incomplete connection or fixation may cause a fire, etc.
Wiring
1. Figure below shows the wiring connections indoor
power line and between the indoor and outdoor units
and between the indoor units and remote controller.
The wires indicated by the dash lines are provided at
the installation place.
2. Insulate the unsheathed redundant cords (conductors)
with electrical insulation tape.
Process them so that they do not touch any electrical or
metal parts.
2. Be sure to connect earth wire.
(grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes,
lightning rods or ground wires for telephone wires.
1. Remove the cover of the electrical control box by taking off the mounting screws (2 positions)
2. Tighten the screws of the terminal block, and fix the wires with cord attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
3. Mount the cover of the electrical control box without pinching wires.
<Terminal block of electrical control box>
3. Appliance shall be installed in accordance
with national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
n Wiring diagram
Electrical control
box cover
System interconnecting Wired remote controller connecting
Terminal block Terminal block
CAUTION
Indoor fan power supply
Terminal block
Outdoor Input power
380-415V 3N~, 50 Hz
• If incorrect/incomplete wiring is carried out, it will cause
an electrical fire or smoke.
• Be sure to install an earth leakage breaker that is not
tripped by shock waves.
If an earth leakage breaker is not installed, an electric
shock may be caused.
L
L
L
1
2
3
Fixing screw
Outdoor
unit
N
• Be sure to use the cord clamps attached to the product.
1
1
2
3
Circuit breaker
Bushing
• Do not damage or scratch the conductive core and inner
insulator of power and inter-connecting wires when
peeling them.
• Use the power cord and Inter-connecting wire of
specified thickness, type, and protective devices
required.
(Leakage breaker)
Indoor Fan Input power
220-240V~, 50 Hz
2
3
L
Indoor
unit
N
A
B
Indoor fan
power supply wire
Wired
remote controller wire
Circuit breaker
(Leakage breaker)
REQUIREMENT
System interconnecting wire
Cord clamp
• For power supply wiring, strictly conform to the Local
Regulation in each country.
Wired remote controller
• Power supply for indoor unit must be exclusive and
separated from the one for outdoor unit.
• For wiring of power supply of the outdoor units, follow
the Installation Manual of each outdoor unit.
• Never connect 220–240V power to the terminal blocks
( A , B , etc.) for control wiring.
(Otherwise, the system will fail.)
n Power and Wiring Specification
• Perform the electric wiring so that it does not come to
contact with the high-temperature part of the pipe.
The coating may melt resulting in an accident.
• After connecting wires to the terminal blocks, provide a
trap and fix wires with the cord clamp.
• Run the refrigerant piping line and control wiring line in
the same line.
Indoor fan Power supply
Maximum running current
Fuse rating
220-240V~, 50 Hz
15A
25A
3 × 2.5mm² or more
(H07 RN-F or 60245 IEC 66)
Indoor fan power supply wire∗
• Do not turn on the power of the indoor unit until
vacuuming of the refrigerant pipes completes.
4 × 1.5mm² or more
(H07 RN-F or 60245 IEC 66)
System interconnecting wires∗
∗ Number of wire × wire size
– 25 –
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Group control
9
APPLICABLE CONTROLS
Wired remote controller
(Unit: mm)
Procedure 1
REQUIREMENT
R (L) S (N)
Push
button and TEMP.
button simultaneously for
• When you use this air conditioner for the first time, it takes
approx. 5 minutes until the remote controller becomes
available after power-on. This is normal.
at least 4 seconds.
After a while, the display flashes as shown in the figure.
Confirm that the CODE No. is [01].
A
B
A
B
Indoor Unit
Indoor Unit
<When power is turned on for the first time after
installation>
It takes approx. 5 minutes until the remote controller
• If the CODE No. is not [01], push
display content, and repeat the procedure from the
beginning. (No operation of the remote controller is
button to erase the
accepted for a while after
button is pushed.)
becomes available.
Approx. 5 minutes
Remote
Outdoor Unit
Outdoor Unit
Indoor fan power supply wire
“SETTING”
flashes
“SETTING”
goes out
Power on
controller
is available
(∗ Display content varies
with the indoor unit model.)
<When power is turned on for the second
(or later) time>
1
2
3
It takes approx. 1 minute until the remote controller
becomes available.
Procedure 2
Each time you push
button, indoor unit numbers
Approx. 1 minute
in the control group change cyclically.
Select the indoor unit you want to change settings for.
The fan of the selected unit runs.
You can confirm the indoor unit for which you want to
change settings.
Remote
controller
is available
“SETTING”
flashes
“SETTING”
goes out
Power on
System interconnecting wire
• Normal settings were made when the indoor unit was
shipped from factory.
Change the indoor unit settings as required.
• Use the wired remote controller to change the settings.
* The settings cannot be changed using the wireless
remote controller, sub remote controller, or remote
controller-less system (for central remote controller only).
Therefore, install the wired remote controller to change
the settings.
n Remote Controller Wiring
• Strip off approx. 9mm the wire to be connected.
• Non polarity, 2 core wire is used for wiring of the remote controller. (0.5mm² to 2.0mm² wires)
Procedure 3
Using TEMP.
/
buttons, specify CODE No.
buttons, select SET DATA
[
].
✻✻
Wiring diagram
n Changing of setting applicable
Procedure 4
Using TIME
/
control
[
].
✻✻✻✻
Terminal block for
Terminal block
Basic procedure for changing settings
Change the settings while the air conditioner is not working.
(Be sure to stop the air conditioner before making settings.)
Procedure 5
remote controller wiring of indoor unit
Push
button. When the display changes from flashing
to lit, the setup is completed.
• To change settings of another indoor unit, repeat from
A
B
A
B
Remote controller unit
Procedure 2.
Remote controller wire
(Locally procured)
• To change other settings of the selected indoor unit,
repeat from Procedure 3.
Use
button to clear the settings.
To make settings after
from Procedure 2.
button was pushed, repeat
1
4
6
3
1 5
2
– 27 –
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Procedure 6
n Power saving mode
n Remote controller switch monitoring function
When settings have been completed, push
determine the settings.
button to
1. Push
button for at least four seconds when the
This function is available to call the service monitor mode from the remote controller during a test run to acquire
temperatures of sensors of the remote controller, indoor unit, and outdoor unit.
When
button is pushed, “SETTING” flashes and then
air conditioner is not working.
the display content disappears and the air conditioner
enters the normal stop mode. (While “SETTING” is flashing,
no operation of the remote controller is accepted.)
flashes.
Indicates CODE No. “C2.”
2. Select an indoor unit to be set by pushing
(left side of the button).
Each time you push the button, unit numbers change
as follows:
UNIT No.
1-1
UNIT No.
1-2
UNIT No.
1-3
2
4
n Filter sign setting
UNIT No.
1-4
According to the installation condition, the filter sign term
(Notification of filter cleaning) can be changed.
Follow to the basic operation procedure
The fan of the selected unit runs.
3. Adjust the power save setting by pushing
TIME buttons.
Each push of the button changes the power level by 1%
within the range from 100% to 50%.
1
3
→
→
→
→
→
/
( 1 2 3 4 5 6 ).
• For the CODE No. in Procedure 3, specify [01].
• For the [SET DATA] in Procedure 4, select the SET
1. Push
and
buttons simultaneously for at least 4 seconds to call the service monitor mode.
The service monitor indicator lights up and the header indoor unit number is displayed first.
∗ The factory default is 75%.
DATA of filter sign term from the following table.
CODE No. 00 is also displayed.
SET DATA
0000
Filter sign term
None
2. Pushing TEMP.
(See the following table.)
3. Pushing (left side of the button), select an indoor unit to be monitored.
The sensor temperatures of indoor units and their outdoor unit in the control group are displayed.
/
buttons, select the number of sensor, etc. (CODE No.) to be monitored.
0001
150H
0002
2500H (Factory default)
5000H
4. Push
button to return to the normal display.
0003
0004
10000H
Indoor unit data
Outdoor unit data
Data name
Setting of power level
in power saving mode
CODE No.
Data name
CODE No.
60
n To secure better effect of
01
02
Room temperature (remote controller)
Indoor unit intake air temperature (TA)
Outdoor unit heat exchanger (coil)
temperature (TE)
4. Determine the setting by pushing
button.
heating
5. Push button to complete the setting.
61
62
63
64
65
6A
Outside air temperature (TO)
Compressor discharge temperature (TD)
Compressor suction temperature (TS)
—
Indoor unit heat exchanger (coil)
temperature (TCJ)
When it is difficult to obtain satisfactory heating due to
installation place of the indoor unit or structure of the
room, the detection temperature of heating can be raised.
Also use a circulator, etc. to circulate heat air near the
ceiling.
03
04
F3
Indoor unit heat exchanger (coil)
temperature (TC)
Indoor unit fan cumulative operating hours
(× 1 h)
Follow to the basic operation procedure
Heatsink temperature (THS)
Operating current (× 1/10)
→
→
→
→
→
( 1 2 3 4 5 6 ).
• For the CODE No. in Procedure 3, specify [06].
• For the set data in Procedure 4, select the SET DATA of
shift value of detection temperature to be set up from the
table below.
Compressor cumulative operating hours
(× 100)
F1
SET DATA
0000
Detection temperature shift value
No shift
0001
+1°C
0002
+2°C (Factory default)
0003
+3°C
+4°C
+5°C
+6°C
0004
0005
0006
– 29 –
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Procedure 3
Procedure example 1
n Group control
1. Using TEMP.
/
buttons, specify CODE No.
Manual address setup procedure
While the operation stops, change the setup.
(Be sure to stop the operation of the unit.)
[12]. (CODE No. [12]: Line address)
2. Using TIME
from [3] to [2].
Group control for system of multiple units
One remote controller can control up to 8 indoor units as a group.
/
buttons, change the line address
3. Push
button.
In this time, the setup finishes when the display
changes from flashing to lighting.
t Group control in single system
7
3
4--22,,
Indoor unit No. before setup change is displayed.
4 --11,,
3
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
5 -1,
6
5
-2
Indoor unit
7
3
4 -3,
(Max. 8 units)
5 --33,,
Remote controller
Finish of address setup by power-ON
1
2,6
Procedure 4
Procedure 1
• For wiring procedure and wiring method of the individual line (Identical refrigerant line) system, refer to
“ELECTRICAL CONNECTION”.
• Wiring between lines is performed in the following procedure.
Connect the terminal block (A/B) of the indoor unit connected with a remote controller to the terminal blocks (A/B) of
the indoor units of other indoor units by wiring the inter-unit wire of the remote controller.
• When the power supply has been turned on, the automatic address setup starts and which indicates that address is
being set up flashes on the display part.
During setup of automatic address, the remote controller operation is not accepted.
Required time up to the finish of automatic addressing is approx. 5 minutes.
NOTE
1. Using TEMP.
/
buttons, specify CODE No.
Push simultaneously
or more.
+
+
buttons for 4 seconds
[13]. (CODE No. [13]: Indoor address)
2. Using TIME buttons, change the indoor
address from [3] to [2].
/
After a while, the display part flashes as shown below.
Check the displayed CODE No. is [10].
• When the CODE No. is other than [10], push
to erase the display and repeat procedure from the first
3. Push
button.
button
In this time, the setup finishes when the display
changes from flashing to lighting.
step. (After pushing
button, operation of the remote
controller is not accepted for approx. 1 minute.)
(For a group control, No. of the firstly displayed indoor
unit becomes the header unit.)
Indoor unit No. before setup change is displayed.
In some cases, it is necessary to change the address manually after setup of the automatic address according to the
system configuration of the group control.
(∗ Display changes according
to the model No. of indoor unit.)
Procedure 2
Procedure 5
Every pushing
button, the indoor UNIT No. in the
1. Using TEMP.
/
buttons, specify CODE No.
group control is displayed in order. Select the indoor unit of
which setup is changed.
[14]. (CODE No. [14]: Group address)
2. Using TIME buttons, change the SET DATA
/
In this time, the position of the indoor unit of which setup is
changed can be confirmed because fan of the selected
indoor unit operate.
from [0001] to [0002]. (SET DATA [Header unit: 0001]
[Follower unit: 0002])
3. Push
button.
In this time, the setup finishes when the display
changes from flashing to lighting.
Indoor unit No. before setup change is displayed.
– 31 –
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Procedure 6
To recognize the position of the
corresponding indoor unit though the
indoor UNIT No. is known
Check the position during operation stop.
(Be sure to stop operation of the set.)
n 8°C Operation
If there is other indoor unit to be changed, repeat
procedure 2 to 5 to change the setup.
When the above setup has finished, push
the indoor UNIT No. before change of setup, specify CODE
No. [12], [13], [14] in order with TEMP.
and then check the changed contents.
Address change check Before change:
[3-3-1] → After change: [2-2-2]
Pre-heating operation can be set for cold regions where
room temperature drops to below zero.
to select
Procedure 1
/
buttons,
Push simultaneously
+
+
buttons for 4 seconds
or more when the air conditioner is not working.
After a while, the display part flashes as shown below.
Check the Displayed CODE No. is [10].
• When the CODE No. is other than [10], push
Pushing
button clears the contents of which setup was
changed. (In this case, procedure from 2 is repeated.)
button
to erase the display and repeat procedure from the first
step. (After pushing
controller is not accepted for approx. 1 minute.)
button, operation of the remote
Indoor unit No. before setup change is displayed.
1
2
1,3
(∗ Display changes according to
Procedure 1
the model No. of indoor unit.)
Push simultaneously
+
buttons for 4 seconds or
more. After a while, the display part flashes and the
display appears as shown below.
In this time, the position can be checked because fan of
the indoor unit operate.
Procedure 2
Every pushing
button, the indoor unit No. in the
group control is displayed in order.
• For the group control, the indoor UNIT No. is displayed
Select the indoor unit of which setup is changed.
as [
] and fans of all the indoor units in the group
In this time, the position of the indoor unit of which setup is
changed can be confirmed because fan of the selected
indoor unit operate.
control operate.
Check the displayed CODE No. is [01].
• When the CODE No. is other than [01], push
button
Procedure 7
Procedure 3
to erase the display and repeat procedure from the first
step. (After pushing button, operation of the remote
controller is not accepted for approx. 1 minute.)
After check of the changed contents, push
(Setup is determined.)
button.
Using TEMP.
/
buttons, specify CODE No. [d1].
When pushing
status becomes the usual stop status.
(When pushing
button, the display disappears and the
Procedure 4
Using TIME
/
buttons, select SET DATA [0001].
button the operation from the remote
controller is not accepted for approx. 1 minute.)
SET DATA
0000
8°C Operation setting
None (Factory default)
8°C Operation setting
∗ If the operation from the remote controller is not
accepted even 1 minute or more passed after pushing
button, it is considered that the address setup is
incorrect.
(∗ Display changes according to
the model No. of indoor unit.)
0001
In this case, the automatic address must be again set
up.
Therefore repeat procedure of the setup change from
the Procedure 1.
Procedure 2
In the group control, every pushing
button, the
Procedure 5
indoor UNIT No. in the group control is displayed in order.
Push
button.
In this time, the position of the indoor unit can be
confirmed because only fan of the selected indoor unit
operate.
In this time, the setup finishes when the display changes
from flashing to lighting.
(For a group control, No. of the firstly displayed indoor unit
becomes the header unit.)
Procedure 6
Push
button. (Setup is determined.)
Procedure
After confirmation, push
the usual mode.
3
When pushing
status
Becomes the usual stop status.
button, the display disappears and the
button to return the mode to
(When pushing
controller is not accepted for approx. 1 minute.)
button the operation from the remote
When pushing
status becomes the usual stop status.
button, the display disappears and the
(When pushing
button the operation from the remote
controller is not accepted for approx. 1 minute.)
– 33 –
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10
TEST RUN
11
MAINTENANCE
Procedure 1
CAUTION
n Before test run
Keep
button pushed for 4 seconds or more.
When connecting a return air duct to the unit, the cleaning method of the air filter differs according
to the construction of duct end. Ask a qualified installer or qualified service person.
[TEST] is displayed on the display part and the selection of
mode in the test mode is permitted.
• Before turning on the power supply, carry out the
following procedure.
1) Using 500V-megger, check that resistance of 1MΩ or
more exists between the terminal block 1 to 3 and the
earth (grounding).
If resistance of less than 1MΩ is detected, do not run
the unit.
2) Check the valve of the outdoor unit being opened
fully.
• To protect the compressor at activation time, leave
power-ON for 12 hours or more before operating.
<Daily maintenance>
Cleaning of air filter
1. If
is displayed on the remote controller, contact to qualified
installer or qualified service person.
2. Take out the air filter.
Procedure 2
• Push the extrusion of the air filter to inside and pull out it to
take out the air filter.
3. Cleaning with water or vacuum cleaner
• If dirt is heavy, clean the air filter by tepid water with neutral
detergent or water.
• After cleaning with water, dry the air filter sufficiently in a
shade place.
1,2
3
Push
button.
Procedure 3
n Execute a test run
Using
button, select the operation mode, [Cool] or
[Heat].
Using the wired remote controller, operate the unit as
usual.
For the procedure of the operation, refer to the attached
Owner’s Manual.
A forced test run can be executed in the following
procedure even if the operation stops by thermostat-OFF.
• Do not run the air conditioner in a mode other than [Cool]
or [Heat].
• The temperature controlling function does not work
during test run.
4. Mount the air filter.
5. After cleaning, push
display disappears.
.
• The detection of error is performed as usual.
In order to prevent a serial operation, the forced test run is
released after 60 minutes have passed and returns to the
usual operation.
CAUTION
• Do not start the air conditioner while leaving air filter removed.
• Push the filter reset button. ( indication will be turn off.)
CAUTION
• Do not use the forced test run for cases other than the
test run because it applies an excessive load to the
devices.
Procedure 4
PERIODIC MAINTENANCE
• For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use
be cleaned and maintained regularly to ensure efficient operation of the air conditioner.
When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended.
Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if
necessary.
As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and outdoor unit at least
once every 3 months. Ask a professional for this cleaning/maintenance work.
Such maintenance can extend the life of the product though it involves the owner’s expense.
Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leakage, and even
compressor failure.
After the test run, push
button to stop a test run.
(Display part is same as procedure 1.)
Procedure 5
Push
check button to cancel (release from) the test run
mode. ([TEST] disappears on the display and the status
returns to a normal.)
2, 4
3
• When a drain pump kit (sold separately) is installed.
If it is used in a place full of dust or oil mist, the pump will be clogged and proper drainage is disabled.
Clean the drain pump periodically. For how to clean the drain pump, contact the dealer.
1,5
– 35 –
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Maintenance List
12
TROUBLESHOOTING
Part
Heat exchanger
Fan motor
Unit
Check (visual/auditory)
Maintenance
• Wash the heat exchanger when it is clogged.
n Confirmation and check
n Confirmation of error log
• Dust/dirt clogging,
scratches
Indoor/outdoor
When an error occurred in the air conditioner, an error
code and indoor UNIT No. appear on the display part of
the remote controller.
When an error occurred on the air conditioner, the error log
can be confirmed with the following procedure.
(The error history is stored in memory up to 4 errors.)
Indoor/outdoor • Sound
•
Take appropriate measures when abnormal sound is generated.
The error code is only displayed during the operation.
The log can be confirmed from both operating status and
stop status.
• Wash the filter with water when it is contaminated.
• Replace it when it is damaged.
Filter
Fan
Indoor
Indoor
• Dust/dirt, breakage
If the display disappears, operate the air conditioner
according to the following “Confirmation of error log” for
confirmation.
• Vibration, balance
• Replace the fan when vibration or balance is terrible.
• Brush or wash the fan when it is contaminated.
2
• Dust/dirt, appearance
Air inlet/outlet grilles Indoor/outdoor • Dust/dirt, scratches
• Dust/dirt clogging,
• Fix or replace them when they are deformed or damaged.
• Clean the drain pan and check the downward slope for smooth
drainage.
3
1
Drain pan
Indoor
drain contamination
Error code
Indoor UNIT No. in
which an error occurred
Ornamental panel,
louvres
• Wash them when they are contaminated or apply repair
coating.
Indoor
• Dust/dirt, scratches
Procedure 1
When pushing
and
buttons at the same time for
• Rust, peeling of insulator
• Peeling/lift of coat
Exterior
Outdoor
• Apply repair coating.
4 seconds or more, the following display appears.
If is displayed, the mode enters in the error log mode.
• [01: Order of error log] is displayed in CODE No..
• [Error code] is displayed in CHECK.
• [Indoor unit address in which an error occurred] is
displayed in Unit No..
Procedure 2
Every pushing of
button used to set temperature,
the error log stored in memory is displayed in order.
The numbers in CODE No. indicate CODE No. [01] (latest)
→ [04] (oldest).
REQUIREMENT
Do not push
button because all the error log of the
indoor unit will be deleted.
Procedure 3
After confirmation, push
display.
button to return to the usual
– 37 –
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n Error codes and parts to be checked
Wired remote
Wired remote
controller
Air
conditioner
status
Air
conditioner
status
controller
Judging
device
Judging
device
Main defective parts
Parts to be checked / error description
Main defective parts
Parts to be checked / error description
display
display
Indication
Indication
Incorrect remote controller setting – The header remote controller
has not been set (including two remote controllers).
Indoor
Indoor
Indoor address setting error –
There are two or more header units in the group.
No header remote controller
L03
L07
Duplicated header indoor units
Entire stop
«
Remote
E01
∗
controller
Remote controller communication error
Remote controller transmission error
No signal can be received from the indoor unit.
Group line in individual indoor unit
«
Indoor address setting error – There is at least one group-connected
indoor unit among individual indoor units.
Entire stop
Remote System interconnecting wires, indoor P.C. board, remote controller –
controller No signal can be sent to the indoor unit.
E02
E03
∗
L08
L09
L10
Indoor group address not set
Indoor power level not set
Outdoor unit P.C. board
Indoor
Indoor
Indoor address setting error – Indoor address group has not been set. Entire stop
Indoor power level has not been set. Entire stop
«
Indoor unit-remote controller regular
communication error
Remote controller, network adapter, indoor P.C. board – No data is
Indoor
Auto-reset
received from the remote controller or network adapter.
Outdoor
In the case of outdoor P.C. board jumper wire (for service) setting error. Entire stop
Address setting, central control remote controller, network adapter
Indoor unit-outdoor unit serial
communication error
System interconnecting wires, indoor P.C. board, outdoor P.C. board.
Indoor
Network
adapter
central control
E04
E08
Auto-reset
Auto-reset
– Serial communication error between indoor unit and outdoor unit
L20
L29
LAN communication error
Other outdoor unit error
– Duplication of address in central control communication.
Auto-reset
IPDU-CDB communication error
Indoor address setting error –
Indoor
Other outdoor unit error Entire stop
Duplicated indoor addresses
«
The same address as the self-address was detected.
1) Communication error between IPDU MCU and CDB MCU
Outdoor
Indoor
Entire stop
Entire stop
2) Abnormal temperature was detected by the heat sink temp.
sensor in IGBT.
Remote controller address setting error – Two remote controllers are
set as header in the double-remote controller control.
Remote
controller
E09
Duplicated header remote controllers
CPU-CPU communication error
∗
Abnormal external input into
indoor unit (interlock)
External devices, outdoor unit P.C. board – Abnormal stop due to
incorrect external input into CN80
(∗ The header indoor unit stops raising alarm and follower indoor
units continue to operate.)
L30
L31
Operation
continued
(thermostat
OFF)
Indoor P.C. board – Communication error between main MCU and
motor microcomputer MCU
E10
E18
Indoor
Auto-reset
Auto-reset
Power supply phase sequence, outdoor unit P.C. board
– Abnormal phase sequence of the 3-phase power supply
Phase sequence error, etc.
Outdoor
Indoor P.C. board –
Regular communication is not possible between header and follower
indoor units or between twin header (main) and follower (sub) units.
Header indoor unit-indoor follower unit
regular communication error
Indoor
Indoor fan motor, indoor P.C. board – Indoor AC fan error
(fan motor thermal relay activated) was detected.
P01
P03
P04
Indoor unit fan error
Indoor
Outdoor
Outdoor
Entire stop
Entire stop
Entire stop
E31
F01
IPDU communication error
Outdoor Communication error between IPDU and CDB
Entire stop
Auto-reset
Outdoor unit discharge temp. error
An error was detected in the discharge temp. releasing control.
Indoor unit heat exchanger sensor
(TCJ) error
Heat exchanger sensor (TCJ), indoor P.C. board – Open-circuit or
Indoor
Outdoor unit high-pressure system
error
High-pressure switch – The IOL was activated or an error was
detected in the high-pressure releasing control using the TE.
short-circuit of the heat exchanger sensor (TCJ) was detected.
Indoor unit heat exchanger sensor (TC)
error
Heat exchanger sensor (TC), indoor P.C. board – Open-circuit or
Indoor
F02
F04
Auto-reset
Entire stop
The power supply wire may be connected incorrectly.
Check open phase and voltages of the power supply.
short-circuit of the heat exchanger sensor (TC) was detected.
P05
P07
P10
P15
Open phase detected
Heat sink overheat
Outdoor
Outdoor
Indoor
Entire stop
Entire stop
Entire stop
Entire stop
Outdoor unit discharge temp. sensor
(TD) error
Outdoor temp. sensor (TD), outdoor P.C. board – Open-circuit or
Outdoor
Abnormal temperature was detected by the temp. sensor of the IGBT
heat sink.
short-circuit of the discharge temp. sensor was detected.
Outdoor unit temp. sensor (TE/TS)
error
Outdoor temp. sensors (TE/TS), outdoor P.C. board – Open-circuit or
Outdoor
F06
F07
F08
Entire stop
Entire stop
Indoor unit water overflow
detected
Drain pipe, clogging of drainage, float switch circuit, indoor P.C. board
– Drainage is out of order or the float switch was activated.
short-circuit of the heat exchanger temp. sensor was detected.
TL sensor error
Outdoor TL sensor may be displaced, disconnected or short-circuited.
There may be gas leakage from the pipe or connecting part.
Check for gas leakage.
Gas leakage detected
4-way valve error
Outdoor
Outdoor unit outside air temp. sensor
error
Outdoor temp. sensor (TO), outdoor P.C. board – Open-circuit or
Outdoor
Operation
continued
short-circuit of the outdoor air temp. sensor was detected.
4-way valve, indoor temp. sensors (TC/TCJ)
– An error was detected due to temperature drop of the indoor unit
heat exchanger sensor when heating.
Outdoor
(Indoor)
Auto-reset
(Auto-reset)
P19
Indoor unit room temp. sensor (TA)
error
Room temp. sensor (TA), indoor P.C. board – Open-circuit or short-
Indoor
F10
F12
F13
Auto-reset
Entire stop
Entire stop
circuit of the room temp. sensor (TA) was detected.
P20
P22
High-pressure protective operation
Outdoor unit fan error
Outdoor
Outdoor
High-pressure protection
Entire stop
Entire stop
TS (1) sensor error
Outdoor TS (1) sensor may be displaced, disconnected or short-circuited.
Outdoor unit fan motor, outdoor unit P.C. board – An error (overcurrent,
locking, etc.) was detected in the outdoor unit fan drive circuit.
Abnormal temperature was detected by the temp. sensor of the IGBT
heat sink.
Heat sink sensor error
Outdoor
IGBT, outdoor unit P.C. board, inverter wiring, compressor
– Short-circuit protection for compressor drive circuit devices
(G-Tr/IGBT) was activated.
F15
F29
F31
Temp. sensor connection error
Indoor unit, other P.C. board error
Outdoor unit P.C. board
Outdoor Temp. sensor (TE/TS) may be connected incorrectly.
Entire stop
Auto-reset
Entire stop
P26
P29
P31
Outdoor unit inverter Idc activated
Outdoor unit position error
Other indoor unit error
Outdoor
Outdoor
Indoor
Entire stop
Entire stop
Indoor
Indoor P.C. board – EEPROM error
Outdoor unit P.C. board, high-pressure switch
– Compressor motor position error was detected.
Outdoor Outdoor P.C. board – In the case of EEPROM error.
Current detect circuit, power voltage –
Outdoor Minimum frequency was reached in the current releasing control or
short-circuit current (Idc) after direct excitation was detected
Another indoor unit in the group is raising an alarm.
Entire stop
Auto-reset
H01
Outdoor unit compressor breakdown
Entire stop
E03/L07/L03/L08 alarm check locations and error description
H02
H03
H04
Outdoor unit compressor lock
Outdoor Compressor circuit – Compressor lock was detected.
Entire stop
Entire stop
Entire stop
: The air conditioner automatically enters the auto-address setting mode.
«
Current detect circuit, outdoor unit P.C. board – Abnormal current
Outdoor
Outdoor unit current detect circuit error
Case thermostat operation (1)
was detected in AC-CT or a phase loss was detected.
Outdoor Malfunction of the case thermostat.
Current, high-pressure switch circuit, outdoor P.C. board –
Outdoor unit low-pressure system error Outdoor Ps pressure sensor error was detected or low-pressure protective
operation was activated.
H06
Entire stop
– 39 –
– 40 –
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Revised: May, 2010
13. DETACHMENTS
13-1. 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.
NOTE
“Each fan motor weights approx. 8 kg. An air blower assembly with 1 fan weights approx. 20 kg and with 2 fans
weights approx. 39 kg. An air blower assembly can be derived from main unit by one person. However, the assembly
must be carried by two people.”
Air blower assembly (1 fan type)
Air blower assembly (2 fans type)
13-2. How to replace the parts
n Fan assembly and replacement
No.
Part name
Fan assembly <Fan assembly>
• SM224 type fan has the same construction
Work procedure
Remarks
1
Appearance Fan assembly Fan assembly
(1 fan)
(2 fans)
with SM280 type for assembling.
1), 2)
• Fan assembly is configured with assembly
of 1 fan and assembly of 2 fans.
Electric parts box cover
(Ø4 screw: 2 positions)
Fan assembly
(2 fans)
Fan asssembly
(1 fan)
– 102 –
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No. Part name
Work procedure
<Fan/Fan case>
1) Take off screws (2 positions) of the electric
parts box cover.
Remarks
1
Fan
assembly
(Continued)
2) Remove the electric parts box cover.
3) Cut the bundling band (3 positions) which
binds the fan motor lead wires.
4) Remove yellow (F1), blue (F2) and orange (F3)
Faston terminals of the fan motor lead wires.
5) Remove FAN1 (White), FAN2 (Blue) and FAN3
(Red) connectors of the fan motor.
Fan motor lead wire
5)
Faston terminal
3)
4)
Connector
Bundlling band
6) Take off screws
6)
(Arrow mark indicating position) of the cabinet.
(M5 screw: 8 positions)
Screws
7) Remove the temperature sensor lead wire from
the cord clamp at the rear side of the cabinet.
8) Put the removed electric parts box on the product.
9) Remove lead wires of the fan motor from the
cord clamp in the fan assembly.
10) Take off screws (Arrow mark indicating
position) of the fan assembly.
(M5 screw: 3 positions)
Electric parts box
11) Pull out the fan assembly (a fan) toward you.
8)
7)
Cord clamp
9) Cord clamp
10)
11)
Screws
Screw
Screw
Pull out iit toward you
Fan motor lead wire
– 103 –
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No. Part name
Work procedure
Remarks
1
Fan
assembly
12) Take off screws (Arrow mark indicating
position) of the fan assembly.
12)
Screws
(M5 screw × 3 positions)
(Continued)
13) Pull out the fan assembly (two fans) toward you.
∗ Status when all the fan assemblies are pulled out ∗
Pull out it toward you.
Fan motoor earth
(Ø4: 1 poosition)
14)
14) Take off earth screw (Arrow mark indicating
position) of the fan motor.
(Ø4 screw × 1 position)
15) Take off screws (Arrow mark indicating
position) which mount the fan case.
(A side: M8 screw × 2 positions)
(B side: M8 screw × 2 positions)
(B side: Ø4 screw × 1 position)
Fan case
(M8 screw: 2 positions)
A side
15)
16) Take off screws (Arrow mark indicating
position) which mount the motor base.
(M8 screw × 4 positions)
17) Remove the bell mouth.
(Ø4 screw × 8 positions)
18) Loosen the set screw of the fan.
(M8 screw × 1 position)
19) Remove the fan.
Bell mmouth
(Ø4 sccrew: 88 posittions)
B side
15)
17)
Fan set screw
18)
(M8 screw: 1 position)
Fan case
(Ø4 sccrew:: 11 posittion)
Fan case
(M8 screw: 2 positions)
16)
19)
Motor base
(M8 screw: 4 positions)
– 104 –
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No. Part name
Work procedure
Remarks
1
Fan
assembly
(Continued)
<Fan motor>
1)
1) Take off screws (Arrow mark indicating
position) of the tightening band and then
remove the tightening band, the fixing bracket
and the fan motor.
2) Cut the bundling band (2 positions) that fix the
protective tube (white) on the relay connector
of the fan motor.
3) Remove the fan motor lead wire assembly and
the protective tube from lead wire of the fan
motor.
4) Mount the fan motor lead wire assembly and
the protective tube to the fan motor to be
replaced, arrange the tube so that it covers the
relay connector and then fix it with bundling
band (2 positions).
1)
5) Put the fan motor to be replaced on the motor
base.
Set the fan motor so that label of the model
name is at upper side when replaced.
Tighteniing band
(Ø4: 1 poosition foor left/rright each)
∗ After replacement, assemble the fan motor in
reverse order so that it becomes the same
status as that before replacement.
Be careful there is no loosening of screws
when assembling.
2), 3)
Relay connector
Protective tube Fan motor lead wire
Check also that there is no fitting of fan with
fan case, no air discharge and no abnormal
sound
Fan mottor lead
wire assembly
Fix the both ends of the
protective tube so that it
covers the relay connector section.
4)
Fan motor
5)
Fan motor model name label
Motor base
Fixing bracket
Tightening band
(Left): 2 pcs.
(Right): 2 pcs.
– 105 –
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14. EXPLODED VIEWS AND PARTS LIST
14-1. Indoor Unit
204, 205
212
211
201 203
208
202
210
209
206, 207
Model Name
RAV-SM
Location
Part No.
Description
No.
2242DT-E
2802DT-E 2242DT-TR 2802DT-TR
201
202
203
204
205
206
207
208
209
210
4312C023 Motor, Fan
43122106 Case, Fan
43120237 Fan
3
3
3
6
6
1
3
3
3
6
6
1
3
3
3
6
6
3
3
3
6
6
43139154 Band, Motor, Left
43139155 Band, Motor, Right
431S8155 Owner’s Manual
431S8156 Owner’s Manual
1
1
1
1
1
1
1
1
43166011 Remote Controller, SX-A4EE
43166004 Remote Controller, SX-A11JE2
43166012 Remote Controller, SX-A5EE
1
1
1
1
1
1
Pump, Drain, PCD-4N230TF-2,
43177009
211
212
1
1
1
1
1
1
1
1
230V, 50/60Hz
43151300 Switch, Float, FS-0208-603
– 106 –
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215, 216, 217
219
218
218
214
213
Model Name
RAV-SM
Location
No.
Part No.
Description
2242DT-E
2802DT-E 2242DT-TR 2802DT-TR
213
214
215
216
217
218
219
4314J446 Evaporator Ass’y
4314Q091 Distributor Ass’y
43047688 Nut, Flare, 1/2 IN
43149332 Socket
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
43147195 Bonnet, 1/2 IN
43019904 Holder, Sensor
43147726 Strainer
– 107 –
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401
404
412
405
411
410
409
414
403
407
406
408
413
402
Model Name
RAV-SM
Location
No.
Part No.
Description
2242DT-E
2802DT-E 2242DT-TR 2802DT-TR
401
402
403
404
405
406
407
408
409
410
411
412
413
414
43155165 Capacitor, 12MF, 450VAC
43050425 Sensor Ass’y, Service, TC
43050426 Sensor, Service, TA
3
2
1
2
1
1
1
3
1
1
1
1
1
3
3
2
1
2
1
1
1
3
1
1
1
1
1
3
3
2
1
2
1
1
1
3
1
1
1
1
1
3
3
2
1
2
1
1
1
3
1
1
1
1
1
3
43154141 Relay, LY2F-L, AC230V
43158204 Transformer, TT-13 (AC220–240V)
43160565 Terminal Block, 3P, 20A, AC250V
43160575 Terminal Block, 2P, 20A, AC300V
43060859 Fuse Block, 30A, 250V
4316V419 P.C. Board Ass’y, MCC-1263
4316V418 P.C. Board Ass’y, MCC-1403
4316V247 P.C. Board Ass’y, MCC-1520
43060157 Terminal Block, 4P
43160582 Terminal, 4P
43060700 Fuse, 10A, 250V
– 108 –
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WARNINGS ON REFRIGERANT LEAKAGE
Check of Concentration Limit
Important
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.
NOTE 2 :
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).
Outdoor unit
Most importantly, the multi air conditioner system is able
to replenish a large amount of refrigerant compared with
conventional individual air conditioners.
Refrigerant piping
Indoor unit
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.
(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.
Refrigerant piping
Total amount of refrigerant (kg)
Min. volume of the indoor unit installed room (m³)
≤ Concentration limit (kg/m³)
Outdoor unit
Very
small
Indoor unit
room
The concentration limit of R410A which is used in multi
air conditioners is 0.3kg/m³.
Small
room
Medium
room
Large room
Mechanical ventilation device - Gas leak detector
NOTE 1 :
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.
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)
40
charged amount (15kg)
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.
0
10
20
30
The possible amount of leaked refrigerant gas in
rooms D, E and F is 15kg.
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 2010 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.
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