SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
June 2007
No. OC368
REVISED EDITION-B
SERVICE MANUAL
Revision:
• WIRING DIAGRAM has been
changed in REVISED EDI-
TION-B.
Indoor unit
[Model names]
[Service Ref.]
• Some descriptions have been
modified.
PCA-A24GA
PCA-A24GA1
PCA-A30GA
PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
PCA-A24GA
• Please void OC368 REVISED
EDITION-A.
PCA-A30GA
PCA-A36GA
PCA-A42GA
NOTE:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
• For servicing RoHS compli-
ant products, refer to the RoHS
PARTS LIST.
CONTENTS
1. TECHNICAL CHANGES··································2
2. REFERENCE MANUAL ······································2
3. SAFETY PRECAUTION···································3
4. PART NAMES AND FUNCTIONS ···················5
5. SPECIFICATIONS············································8
6. NOISE CRITERION CURVES··························9
7. OUTLINES AND DIMENSIONS ·····················10
8. WIRING DIAGRAM············································12
9. REFRIGERANT SYSTEM DIAGRAM··················13
10. TROUBLESHOOTING ···································14
11. DISASSEMBLY PROCEDURE·······················26
12. PARTS LIST ···················································31
13. RoHS PARTS LIST ········································34
INDOOR UNIT
Model name
indication
TEMP.
ON/OFF
REMOTE CONTROLLER
3 3 2 2 3
3
SAFETY PRECAUTION
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminals, all supply
circuits must be disconnected.
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilising refrigerant R410A
Use new refrigerant pipes.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil etc.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
Use a vacuum pump with a reverse flow check
valve.
In addition, use pipes with specified thickness.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
The following tools are necessary to use R410A refrigerant.
Tools for R410A
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Flare tool
Size adjustment gauge
Vacuum pump adaptor
Electronic refrigerant
charging scale
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
Keep the tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of the refrigerant oil or malfunction of
the compressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil etc.
Charge refrigerant from liquid phase of gas
cylinder.
Do not use a charging cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
[1] Cautions for service
(1) Perform service after collecting the refrigerant left in a unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
3
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No.
Specifications
specifications
1
Gauge manifold
Charge hose
·Only for R410A
·Use the existing fitting
. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
·Only for R410A
2
·Use pressure performance of 5.09MPa·G or over.
3
4
5
6
7
Electronic scale
Gas leak detector
·Use the detector for R134a, R407C or R410A.
·Attach on vacuum pump.
Adaptor for reverse flow check
Refrigerant charge base
Refrigerant cylinder
·Only for R410A
Top of cylinder (Pink)
Cylinder with syphon
8
Refrigerant recovery equipment
4
4
PART NAMES AND FUNCTIONS
● Indoor Unit
Left/right guide vanes
Change the direction of airflow
from the horizontal blower.
Air outlet
Long-life filter
Removes dust and foreign matter from air coming in
through the grille (Recommended cleaning interval :
Approx. every 2,500 operating hours)
Air intake
Up/down guide vanes
Intake grille
Change the direction of airflow from the
vertical blower.
● Wired remote controller
Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
ON/OFF button
Temperature setting buttons
Down
Up
Fan Speed button
Timer Menu button
(Monitor/Set button)
Filter
button
(<Enter> button)
Mode button (Return button)
Set Time buttons
Test Run button
TEMP.
ON/OFF
Check button (Clear button)
Back
MENU
ON/OFF
DAY
FILTER
Ahead
BACK
MONITOR/SET
CHECK TEST
CLEAR
Airflow Up/Down button
Louver button
PAR-21MAA
CLOCK
OPERATION
Timer On/Off button
(Set Day button)
(
Operation button)
To return operation
number
Opening the
lid
Ventilation button
(
Operation button)
To go to next operation
number
Built-in temperature sensor
5
● Wired remote controller
Display Section
Day-of-Week
“Sensor” indication
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
Shows the current day of the week.
Displayed when the remote controller
sensor is used.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, the time to be
switched off is shown.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
Identifies the current operation
“Clean The Filter” indicator
Shows the operating mode, etc.
To be displayed on when it is time to
clean the filter.
*Multilanguage display is available.
TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER
Hr
ON
AFTER OFF
ERROR CODE
˚F˚C
FUNCTION
FILTER
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
˚F˚C
“Centrally Controlled” indicator
WEEKLY
SIMPLE
AUTO OFF
Indicates that operation from the
remote controller has been prohib-
ited by a master controller.
ONLY1Hr.
Fan Speed indicator
Shows the selected fan speed.
Up/Down Air Direction indica-
tor
Room Temperature display
Ventilation indicator
Shows the room temperature. The room
temperature display range is 46–102°F.
The display blinks if the temperature
Appears when the unit is running in
Ventilation mode.
“Timer is Off” indicator
Shows the direction of the
outcoming airflow.
Indicates that the timer is off.
is less than 46°F or 102° or more.
F
“One Hour Only” indicator
Louver display
Displayed if the airflow is set to
Low or downward during COOL
or DRY mode. (Operation varies
according to model.)
Indicates the action of the swing louver.
Does not appear if the louver is not
running.
Temperature Setting
Shows the target temperature.
The indicator goes off in one hour,
at which time the airflow direction
also changes.
(Power On indicator)
Indicates that the power is on.
Note:
● “PLEASE WAIT” message
This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.
● “NOT AVAILABLE” message
This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).
If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as
far as any of the indoor units is equipped with the function.
6
● Wireless remote controller
display
CHECK TEST RUN
Indicate that the unit is being checked or
test-run.
display
display
MODEL SELECT
Blinks when model is selected.
Lights up while the signal is transmitted to
the indoor unit when the button is pressed.
Temperature setting display
indicates the desired temperature setting
which is set.
OPERATION MODE display
CLOCK display
Displays the current time.
TIMER display
OPERATION MODE display
Indicates which operation mode is in effect.
TEST
RUN
CHECK
COOL
DRY
˚F
Displays when in timer operation or when
setting timer.
MODEL
˚C
SELECT
STOP AMPM
AUTO
FAN
FAN
“
” “ ” display
SWING
AMPM
START
Displays the order of timer operation.
HEAT
NOT AVAILABLE
“
” “
” display
display
The vertical direction of air flow is indicated.
display
ON/OFF
TEMP
Displays whether timer is on or off.
button
Displays selected fan speed.
Sets any desired room temperature.
ON/OFF button
FAN
AUTO STOP
The unit is turned ON and OFF alternately
each time the button is pressed.
MODE VANE
CHECK LOUVER
TEST RUN
AUTO START
h
TIMER CONTROL buttons
AUTO STOP (OFF timer): when this switch
is set, the air conditioner will be au-
tomatically stopped at the preset time.
AUTO START (ON timer): when this switch
is set, the air conditioner will be automatical-
ly started at the preset time.
FAN SPEED SELECT button
Changes the fan speed.
min
MODE SELECT button
SET
RESET
CLOCK
Switches the operation mode between
COOLING/DRY/FAN/HEATING and AUTO
mode.
"h" and "min" buttons
wIn case the outdoor unit is cooling only
type, the heating and auto mode are not
available.
Buttons used to set the “hour and minute” of
the current time and timer settings.
LOUVER button
CHECK-TEST RUN button
Changes left / right airflow direction.
(Not available for this model.)
Performs an inspection check or test opera-
tion.
Do not use it for normal operation.
CLOCK button
RESET button
SET button
VANE CONTROL button
Changes the air flow direction.
7
5
SPECIFICATIONS
PCA-A24GA, PCA-A24GA1
Service Ref.
Power supply(phase, cycle, voltage)
Max. Fuse Size
Min.Circuit Ampacity
External finish
Single phase, 60Hz, 208/230V
15
1
A
A
Munsell 0.70Y 8.59/0.97
Plate fin coil
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Fan motor
Sirocco fan (direct) o 3
0.070
kW
F.L.A
0.53
Dry: 14-15-16-18(495-530-565-635)
Wet: 13-14-15-16(445-480-510-570)
0(direct blow)
m3/min(CFM)
Airflow(Low-Medium2-Medium1-High)
External static pressure
Pa(mmAq)
Remote controller & built-in
37-39-41-43
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Field drain pipe O.D.
dB
26(1-1/32)
1,310(51-9/16)
680(26-25/32)
210(8-9/32)
34(75)
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
Dimensions
W
D
H
Weight
PCA-A30GA, PCA-A30GA1
Service Ref.
Single phase, 60Hz, 208/230V
Power supply(phase, cycle, voltage)
Max. Fuse Size
Min.Circuit Ampacity
External finish
15
1
A
A
Munsell 0.70Y 8.59/0.97
Plate fin coil
Heat exchanger
Sirocco fan (direct) o 3
0.070
Fan
Fan(drive) o No.
Fan motor output
Fan motor
kW
F.L.A
0.53
Dry: 14-15-16-18(495-530-565-635)
Wet:13-14-15-16(445-480-510-570)
0(direct blow)
Airflow(Low-Medium2-Medium1-High) K/min(CFM)
Pa(mmAq)
External static pressure
Remote controller & built-in
37-39-41-43
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Field drain pipe O.D.
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
26(1-1/32)
1,310(51-9/16)
680(26-25/32)
210(8-9/32)
34(75)
W
Dimensions
D
H
Weight
Service Ref.
PCA-A36GA, PCA-A36GA1
Power supply(phase, cycle, voltage)
Max. Fuse Size
Min.Circuit Ampacity
External finish
Single phase, 60Hz, 208/230V
15
1
A
A
Munsell 0.70Y 8.59/0.97
Plate fin coil
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Fan motor
Sirocco fan (direct) o 3
0.090
kW
F.L.A
0.69
Dry: 20-21-23-25(705-740-810-885)
Wet:18-19-21-22(635-670-730-790)
0(direct blow)
K/min(CFM)
Airflow(Low-Medium2-Medium1-High)
External static pressure
Pa(mmAq)
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Field drain pipe O.D.
Remote controller & built-in
40-41-43-45
dB
26(1-1/32)
1,310(51-9/16)
680(26-25/32)
270(10-5/8)
37(82)
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
Dimensions
D
H
Weight
8
PCA-A42GA, PCA-A42GA1
Service Ref.
Power supply(phase, cycle, voltage)
Max. Fuse Size
Min.Circuit Ampacity
External finish
Single phase, 60Hz, 208/230V
A
A
15
1
Munsell 0.70Y 8.59/0.97
Plate fin coil
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Fan motor
Sirocco fan (direct) o 3
0.090
kW
F.L.A
0.69
Dry: 20-21-23-25(705-740-810-885)
Wet:18-19-21-22(635-670-730-790)
0(direct blow)
K/min(CFM)
Airflow(Low-Medium2-Medium1-High)
Pa(mmAq)
External static pressure
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Field drain pipe O.D.
Remote controller & built-in
40-41-43-45
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
26(1-1/32)
1,310(51-9/16)
680(26-25/32)
270(10-5/8)
37(82)
Dimensions
W
D
H
Weight
6 NOISE CRITERION CURVES
NOTCH SPL(dB) LINE
NOTCH SPL(dB) LINE
PCA-A36GA
PCA-A42GA
PCA-A36GA1
PCA-A24GA
PCA-A30GA
PCA-A24GA1
High
Medium1
Medium2
Low
45
43
41
40
High
Medium1
Medium2
Low
43
41
39
37
PCA-A42GA1
PCA-A30GA1
90
90
80
70
60
50
40
30
80
70
60
50
40
30
NC-70
NC-70
NC-60
NC-50
NC-40
NC-30
NC-60
NC-50
NC-40
NC-30
APPROXIMATE
APPROXIMATE
20
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-20
NC-20
10
10
63
125
250
500
1000
2000
4000
8000
63
125
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
BAND CENTER FREQUENCIES, Hz
ceiling
3.3ft
3.3ft
unit
about 4.62ft
MICROPHONE
9
7
OUTLINES AND DIMENSIONS
Unit : inch(mm)
PCA-A24GA PCA-A24GA1
PCA-A30GA PCA-A30GA1
6
NOTES:
Use M10 or W3/8 screw for anchor bolt.
MODEL
24/30
5
4
Liquid pipe
3/8F
5-1/2(140)
2-3/4(70)
Gas pipe
5/8F
48-13/16(1240)
(Suspension bolt pitch)
3-7/16(87)
5/8(16)
50-13/16(1290)
7-3/16(182)
7/15/16(201)
9-1/2(241)
liquid
gas
(Drainage)
47-13/16(1214)
51-9/16(1310)
Air outlet
Rear wall
Allowing clearances
Ceiling
6-3/8(161)
3-17/32(90)
9-13/16(250)
Less than
48-3/8(1228)
10-5/8(270)
or more
51-9/16(1310)
11-13/16(300)
or more
Air intake
[FRONT VIEW]
8
9
Electrical box
1
5
2
4
3
Ceiling
1 Drainage pipe connection(1-1/32(26mm)I.D.)
2 Drainage pipe connection(for the left arrangement)
3 Knockout hole for left drain-piping arrangement
4 Refrigerant-pipe connection(gas pipe side/flared connection)
5 Refrigerant-pipe connection(liquid pipe side/flared connection)
6 Knockout hole for upper pipe arrangement
7 Knockout hole for left drain pipe arrangement
8 Knockout hole for wiring arrangement
3-3/8(86)
5-7/16(138)
6-3/4(171)
10-3/8(263)
11-13/16(300)
9 Knockout hole for fresh air intake
3-15/16(100)
20-21/32(525)
48-5/8(1235)
16-3/8(416)
2-3/4(70)
When electrical box
is pulled down
Electrical box
7
9-1/32(229)
2
10
Unit : inch(mm)
PCA-A36GA PCA-A36GA1
PCA-A42GA PCA-A42GA1
6
NOTES:
Use M10 or W3/8 screw for anchor bolt.
5-1/2(140)
2-3/4(70)
MODEL
36/42
3/8F
5
4
Liquid pipe
Gas pipe
5/8F
48-13/16(1240)
(Suspension bolt pitch)
3-7/16(87)
5/8(16)
50-13/16(1290)
7-3/16(182)
liquid
gas
Air outlet
47-13/16(1214)
51-9/16(1310)
7-13/16(198)
9-5/8(245)
(Drainage)
Rear wall
Allowing clearances
Ceiling
6-3/8(160)
3-17/32(90)
9-13/16(250)
Less than
48-3/8(1228)
11-13/16
(300)
or more
10-5/8(270)
or more
51-9/16(1310)
Air intake
[FRONT VIEW]
Electrical box
Ceiling
5 1
4
2
9
8
3
1Drainage pipe connection(1-1/32(26mm)I.D.)
2 Drainage pipe connection(for the left arrangement)
3 Knockout hole for left drain-piping arrangement
4 Refrigerant-pipe connection(gas pipe side/flared connection)
3-3/8(86)
5-7/16(138)
6-3/4(171)
5 Refrigerant-pipe connection(liquid pipe side/flared connection)
6 Knockout hole for upper pipe arrangement
7 Knockout hole for left drain pipe arrangement
8 Knockout hole for wiring arrangement
10-3/8(263)
13(330)
7-7/8(200)
9 Knockout hole for fresh air intake
20-21/32(525)
27-1/16(687)
When electrical box
is pulled down
48-5/8(1235)
2-3/4(70)
Electrical box
7
9-1/32(229)
2
11
WIRING DIAGRAM
8
PCA-A24GA PCA-A30GA
PCA-A24GA1 PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
[LEGEND]
SYMBOL
P.B
I.B
FUSE
NAME
INDOOR POWER BOARD
INDOOR CONTROLLER BOARD
FUSE (6.3A/250V)
SYMBOL
C
MF
MV
NAME
CAPACITOR<FAN MOTOR>
FAN MOTOR
SYMBOL
W.B
RU
BZ
NAME
WIRELESS REMOTE CONTROLLER BOARD(OPTION)
RECEIVING UNIT
BUZZER
VANE MOTOR
LED1
LED<RUN INDICATOR >
ZNR
CN2L
CN32
CN41
CN51
SW1
SW2
SWE
X1
VARISTOR
CONNECTOR<LOSSNAY>
TB4
TERMINAL BLOCK<INDOOR/OUTDOOR
CONNECTING LINE>
TERMINAL BLOCK<REMOTE CONTROLLER
TRANSMISSION LINE >
LED2 LED<HOT ADJUST>
SW1 SWITCH<HEATING ON/OFF>
SW2 SWITCH<COOLING ON/OFF>
CONNECTOR<REMOTE SWITCH>
CONNECTOR<HA TERMINAL-A>
CONNECTOR<CENTRALLY CONTROL>
SWITCH <MODEL SELECTION>wSee Table 1.
SWITCH <CAPACITY CODE>wSee Table 2.
SWITCH<EMERGENCY OPERATION>
RELAY<DRAIN PUMP>
RELAY<FAN MOTOR>
FAN CONTROL ELEMENT
POWER SUPPLY<I.B>
POWER SUPPLY<R.B>
TB5,TB6
TH1
ROOM TEMP.THERMISTOR
°
°
<32 F/15k
Ω, 77 F/5.2kΩ DETECT>
TH2
PIPE TEMP.THERMISTOR/LIQUID
°
°
Please set the voltage using the remote
controller.
For the setting method, please refer to
the indoor unit Installation Manual.
<32 F/15k
Ω, 77 F/5.2kΩ DETECT>
TH5
COND./EVA.TEMP.THERMISTOR
°
°
<32 F/15kΩ, 77 F/5.2kΩ DETECT>
X4
BCR
LED1
LED2
LED3
R.B
WIRED REMOTE CONTROLLER BOARD
TRANSMISSION<INDOOR-OUTDOOR>
P.B
CNDK
(RED)
CN2S
(WHT)
1
2
3
1
2
DC13.1V
MF
YLW
ORN
TB4
S1
w1
1 2 3
S2
S3
C
YLW
ORN
BRN
TO OUTDOOR UNIT
I.B
FAN
24/30 TYPE
D.U.M
CNP
(BLU)
POWER
CNDK
(RED)
POWER
CND
VANE
CN6V
1 3 5
1 3
1 3
1 3
1 2
1 3
6
6
6
6
MV
MV
(
)
WHT
(ORN)
POWER A-CONTROL
(
)
GRN
MV
9
CN2D(WHT) CN3C(BLU)
X4
X4
36/42 TYPE
CN41
CN51
CN2L
CN32
X1
X1
BCR
5
5
ZNR
WIRELESS
CN90
(
)
WHT
LED3 LED2 LED1
CNB
BZ
SW2 SW1
D.SENSOR INTAKE LIQUID PIPE REMOCON
SWE
ON
OFF
CN31
CN20
CN21
CN29 CN22
) ( )
BLU
(
)
(
)
(
)
(
WHT
RED
WHT
BLK
RU
1 2 3
1 2
1 2
1 2 1 2
RECEIVER LED1 LED2 SW2SW1
W.B
Refer to tables 1 and 2
for service PCB.
1 2
1 2
2
1
TB6
2
TRANSMISSION WIRES DC12V
R.B
1
TH2
TH1
TH5
TB5
Table 1
MODELS
PCA-A,GA
Table 2
SW1
Service board
SW2
MODELS
Service board
MODELS
Service board
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
ON
OFF
ON
OFF
ON
OFF
PCA-A24GA
PCA-A30GA
PCA-A36GA
1
2
3
4
5
1
2
3
4
5
ON
OFF
ON
OFF
PCA-A42GA
NOTES:
1. Since the outdoor side electric wiring may change, be sure to check the outdoor unit
electric wiring for servicing.
2. Indoor and outdoor connecting wires have polarities, make sure to match terminal numbers (S1, S2, S3)
for correct wirings.
3. Symbols used in wiring diagram above are,
: Connector,
: Terminal (block).
4. This diagram shows the wiring of Indoor and Outdoor connecting wires (specification of 230V),
adopting superimposed system of power and signal.
w1.Use copper supply wires.
[Emergency operation procedure]
When the wired remote control or the indoor unit microcomputer has failed, but all other
components work properly, if you set the switch (SWE) on the indoor control board ON, the indoor
unit will begin Emergency Operation.
When Emergency Operation is activated, indoor fan runs at high speed.
12
REFRIGERANT SYSTEM DIAGRAM
9
PCA-A24GA PCA-A30GA
PCA-A24GA1 PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
Strainer
#50
Heat exchanger
Refrigerant GAS pipe connection
(Flare)
Condenser/evaporator
temperature thermistor
(TH5)
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant LIQUID pipe connection
(Flare)
Pipe temperature
thermistor/liquid
(TH2)
Room temperature
thermistor (TH1)
Strainer
#50
Distributor
with strainer
#50
13
10 TROUBLESHOOTING
10-1. TROUBLESHOOTING
<Error code display by self-diagnosis and actions to be taken for service (summary)>
Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit.
Actions to be taken for service and the inferior phenomenon reoccurrence at field are summarized in the table below. Check
the contents below before investigating details.
Unit conditions at service
Actions to be taken for service (summary)
Error code
Displayed
Judge what is wrong and take a corrective action
according to “SELF-DIAGNOSIS ACTION TABLE” (10-2).
The inferior phenomenon is
reoccurring.
Identify the cause of the inferior phenomenon and take
a corrective action according to “TROUBLESHOOTING
BY INFERIOR PHENOMENA ” (10-3).
Not displayed
1Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise and etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
inferior phenomenon occurred, and wiring related.
2Reset error code logs and restart the unit after finishing
service.
Logged
3There is no abnormality in electrical components,
controller boards, and remote controller.
The inferior phenomenon is
not reoccurring.
1Recheck the abnormal symptom.
2Identify the cause of the inferior phenomenon and take
a corrective action according to “TROUBLESHOOTING
BY INFERIOR PHENOMENA ” (10-3).
3Continue to operate unit for the time being if the cause
is not ascertained.
Not logged
4There is no abnormality in electrical components,
controller boards, remote controller etc.
14
Note: Refer to the manual of outdoor unit for the details of display
such as F, U, and other E.
10-2. SELF-DIAGNOSIS ACTION TABLE
Abnormal point and detection method
Countermeasure
Error Code
Cause
Room temperature thermistor (TH1)
1The unit is in 3-minute resume preven-
tion mode if short/open of thermistor is
detected. Abnormal if the unit does not
reset normally after 3 minutes. (The
unit returns to normal operation, if it
has been reset normally.)
2Constantly detected during cooling,
drying, and heating operation.
Short: 90:(194˚F) or more
1Defective thermistor
characteristics
2Contact failure of connector
(CN20) on the indoor controller
board (Insert failure)
3Breaking of wire or contact
failure of thermistor wiring
4Defective indoor controller
board
1–3 Check resistance value of thermistor.
• • • • • • • • • • •
0: (32˚F)
10:(50˚F)
20:(68˚F)
30:(86˚F)
15.0k"
• • • • • • • • • • • • •
9.6k"
6.3k"
4.3k"
3.0k"
• • • • • • • • • • • • •
• • • • • • • • • • • • •
• • • • • • • • • • • •
40:(104˚F)
If you put force on (draw or bend) the lead wire
with measuring resistance value of thermistor
breaking of wire or contact failure can be detected.
2Check contact failure of connector (CN20) on
the indoor controller board. Refer to 10-6.
Turn the power on again and check restart
after inserting connector again.
P1
Open: -40:(-40˚F) or less
4Check room temperature display on remote
controller.
Replace indoor controller board if there is abnor-
mal difference with actual room temperature.
Turn the power off, and on again to operate
after check.
Pipe temperature thermistor/Liquid
(TH2)
1Defective thermistor
characteristics
1–3 Check resistance value of thermistor.
For characteristics, refer to (P1) above.
2Check contact failure of connector (CN21) on
the indoor controller board. Refer to 10-6.
Turn the power on and check restart after
inserting connector again.
4Check pipe <liquid> temperature with remote
controller in test run mode. If pipe <liquid>
temperature is extremely low (in cooling
mode) or high (in heating mode), refrigerant
circuit may have defect.
1The unit is in 3-minute resume
prevention mode if short/open of
thermistor is detected. Abnormal if the
unit does not reset normally after 3 min-
utes. (The unit returns to normal opera-
tion, if it has been reset normally.)
2Constantly detected during cooling,
drying, and heating (except defrosting)
operation.
2Contact failure of connector
(CN21) on the indoor controller
board (Insert failure)
3Breaking of wire or contact
failure of thermistor wiring
4Defective refrigerant circuit is
causing thermistor temperature
of 90:(194˚F) or more or
-40:(-40˚F) or less.
P2
Short: 90:(194˚F) or more
Open: -40:(-40˚F) or less
5Check pipe <liquid> temperature with remote
controller in test run mode. If there is extreme
difference with actual pipe <liquid> temperature,
replace indoor controller board.
5Defective indoor controller board
Turn the power off, and on again to operate
after check.
Drain sensor (DS)
1Defective thermistor
1–3 Check resistance value of thermistor.
1Suspensive abnormality, if short/open of
thermistor is detected for 30 seconds
continuously.
• • • • • • • • • • • •
characteristics
0: (32˚F)
10:(50˚F)
20:(68˚F)
30:(86˚F)
6.0k"
3.9k"
2.6k"
1.8k"
1.3k"
• • • • • • • • • • • •
• • • • • • • • • • • •
• • • • • • • • • • • •
• • • • • • • • • •
2Contact failure of connector
(CN31) on the indoor controller
board (Insert failure)
3Breaking of wire or contact
failure of drain sensor wiring
4Defective indoor controller board
Turn off compressor and indoor fan.
2
Short/open is detected for 30 seconds con-
tinuously during suspensive abnormality.
(The unit returns to normal operation, if
it has been reset normally.)
40:(104˚F)
2Check contact failure of connector (CN31) on
the indoor controller board. Refer to 10-6.
Turn the power on again and check restart
after inserting connector again.
4Replace indoor controller board if drain
pump operates with the line of drain sensor
connector CN31-1 and 2 is short-circuited,
and abnormality reappears.
P4
3Detect the following condition.
• During cooling and drying operation
• In case that pipe <liquid> temperature
- room temperature <-10deg
(Except defrosting)
• When pipe <liquid> temperature or
room temperature is short/open tem-
perature.
Turn the power off, and on again to operate
after check.
• During drain pump operation
Malfunction of drain pump (DP)
1 Suspensive abnormality, if thermistor
of drain sensor heats itself and
temperature rises slightly. Turn off
compressor and indoor fan.
2 Drain pump is abnormal if the condition
above is detected during suspensive
abnormality.
1Malfunction of drain pump
2Defective drain
Clogged drain pump
Clogged drain pipe
3Attached drop of water at the
drain sensor
• Drops of drain trickles from
lead wire.
• Clogged filter is causing
wave of drain.
1 Check if drain pump works.
2Check drain function.
3Check the setting of lead wire of drain sensor
and check clogs of the filter.
4Replace indoor controller board if drain
pump operates with the line of drain sensor
connector CN31-1 and 2 is short-circuited
and abnormality reappears.
P5
Refer to 10-6.
3 Constantly detected during drain pump
operation.
Turn the power off, and on again to operate
after check.
4Defective indoor controller board
15
Abnormal point and detection method
Countermeasure
(Cooling or drying mode)
1Clogged filter (reduced airflow) 1Check clogs of the filter.
Error Code
Cause
Freezing/overheating protection is
working
(Cooling or drying mode)
1 Freezing protection (Cooling mode)
The unit is in 6-minute resume prevention
mode if pipe <liquid or condenser/evap-
orator> temperature stays under
-15:(5˚F) for 3 minutes, 3 minutes after
the compressor started. Abnormal if it
stays under -15:(5˚F) for 3 minutes
again within 16 minutes after 6-minute
resume prevention mode.
2Short cycle of air path
3Low-load (low temperature)
operation out of the tolerance
range
4Defective indoor fan motor
• Fan motor is defective.
• Indoor controller board is
defective.
2Remove shields.
4 Measure the resistance of fan motor's winding.
Measure the output voltage of fan's connector
(FAN) on the indoor controller board.
WThe indoor controller board should be
normal when voltage of AC 208/230V is
detected while fan motor is connected.
Refer to 10-6.
5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit
(clogs)
5 Check outdoor fan motor.
67 Check operating condition of refrigerant
circuit.
(Heating mode)
(Heating mode)
P6
2 Overheating protection (Heating mode)
The units is in 6-minute resume
1 Clogged filter (reduced airflow) 1 Check clogs of the filter.
2 Short cycle of air path
3 Overload (high temperature)
operation beyond the tolerance
range
4 Defective indoor fan motor
• Fan motor is defective.
• Indoor controller board is
defective.
2 Remove shields.
prevention mode if pipe <condenser /
evaporator> temperature is detected as
over 70:(158˚F) after the compressor
started. Abnormal if the temperature of
over 70:(158˚F) is detected again with-
in 10 minutes after 6-minute resume
prevention mode.
4
Measure the resistance of fan motor's winding.
Measure the output voltage of fan's connector
(FAN) on the indoor controller board.
WThe indoor controller board should be
normal when voltage of AC 208/230V is
detected while fan motor is connected.
Refer to 10-6.
5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit
(clogs)
5 Check outdoor fan motor.
6~8Check operating condition of refrigerant
circuit.
8 Bypass circuit of outdoor unit
is defective.
Pipe temperature
<Cooling mode>
1Slight temperature difference
between indoor room
temperature and pipe <liquid
or condenser / evaporator>
temperature thermistor
• Shortage of refrigerant
• Disconnected holder of pipe
<liquid or condenser /
1~4 Check pipe <liquid or condenser /
evaporator> temperature with room
temperature display on remote controller
and outdoor controller circuit board.
Pipe <liquid or condenser / evaporator>
temperature display is indicated by setting
SW2 of outdoor controller circuit board as
follows.
Detected as abnormal when the pipe tem-
perature is not in the cooling range 3 min-
utes after compressor start and 6 minutes
after the liquid or condenser/evaporator pipe
is out of cooling range.
Note 1) It takes at least 9 minutes to
detect.
evaporator> thermistor
Note 2) Abnormality P8 is not detected in
drying mode.
Cooling range:-3 deg C[-5.4deg F]](TH-TH1)
TH: Lower temperature between liquid pipe
temperature (TH2) and
condenser/evaporator temperature
(TH5)
TH1: Intake temperature
• Defective refrigerant circuit
2 Converse connection of
extension pipe (on plural units
connection)
3 Converse wiring of indoor/
outdoor unit connecting wire
(on plural units connection)
4 Defective detection of indoor
room temperature and pipe
<condenser / evaporator>
temperature thermistor
Conduct temperature check with outdoor
controller circuit board after connecting
‘A-Control Service Tool(PAC-SK52ST)’.
)
(
23Check converse connection of extension
pipe or converse wiring of indoor/outdoor
unit connecting wire.
P8
<Heating mode>
When 10 seconds have passed after the
compressor starts operation and the hot
adjustment mode has finished, the unit is
detected as abnormal when
5 Stop valve is not opened
completely.
condenser/evaporator pipe temperature is
not in heating range within 20 minutes.
Note 3) It takes at least 27 minutes to
detect abnormality.
Note 4) It excludes the period of defrosting
(Detection restarts when defrosting
mode is over)
Heating range:3 deg C[5.4deg F][(TH5-TH1)
16
Abnormal point and detection method
Countermeasure
Error Code
Cause
Pipe temperature thermistor /
Condenser-Evaporator (TH5)
1The unit is in 3-minute resume protec-
tion mode if short/open of thermistor is
detected. Abnormal if the unit does not
get back to normal within 3 minutes.
(The unit returns to normal operation, if
it has been reset normally.)
2Constantly detected during cooling, dry-
ing, and heating operation (except
defrosting)
Short: 90:(194˚F) or more
Open: -40:(-40˚F) or less
1 Defective thermistor
characteristics
2 Contact failure of connector
(CN29) on the indoor controller
board (Insert failure)
3 Breaking of wire or contact
failure of thermistor wiring
4Temperature of thermistor is
90:(194˚F) or more or -40:
(-40˚F) or less caused by
defective refrigerant circuit.
5 Defective indoor controller
board
1–3Check resistance value of thermistor.
For characteristics, refer to (P1) above.
2Check contact failure of connector (CN29)
on the indoor controller board. Refer to 10-6.
Turn the power on and check restart after
inserting connector again.
4Operate in test run mode and check pipe
<condenser / evaporator> temperature with
outdoor controller circuit board. If pipe
<condenser / evaporator> temperature is
extremely low (in cooling mode) or high (in
heating mode), refrigerant circuit may have
defect.
5Operate in test run mode and check pipe
<condenser / evaporator> temperature with
outdoor control circuit board. If there is
exclusive difference with actual pipe
<condenser / evaporator> temperature
replace indoor controller board.
P9
There is no abnormality if none of above
comes within the unit.
Turn the power off and on again to operate.
In case of checking pipe temperature
with outdoor controller circuit board,
be sure to connect A-control service
)
(
tool (PAC-SK52ST).
Remote controller transmission
error(E0)/signal receiving error(E4)
1Abnormal if main or sub remote con-
troller cannot receive any transmission
normally from indoor unit of refrigerant
address “0” for 3 minutes.
1Contact failure at transmission
wire of remote controller
1Check disconnection or looseness of indoor
unit or transmission wire of remote controller.
2Set one of the remote controllers “main”
if there is no problem with the action above.
3Check wiring of remote controller.
• Total wiring length: max. 500m
2All remote controllers are set
as “sub” remote controller. In
this case, E0 is displayed on
remote controller, and E4 is
displayed at LED (LED1, LED2)
on the outdoor controller circuit
board.
3Miswiring of remote controller
4Defective transmitting receiving
circuit of remote controller
5Defective transmitting receiving
circuit of indoor controller board
of refrigerant address “0”
(Do not use cable o 3 or more)
• The number of connecting indoor units:
max. 16 units
• The number of connecting remote con-
troller: max. 2 units
(Error code : E0)
2Abnormal if sub-remote controller could
not receive for any signal for 2 minutes.
(Error code: E0)
1Abnormal if indoor controller board can
not receive any data from remote con-
troller board or normally from other
indoor controller board for 3 minutes.
(Error code: E4)
2 Indoor controller board cannot receive
any signal from remote controller for 2
minutes. (Error code: E4)
When the above-mentioned problem 1~3 are not seen.
4Diagnose remote controllers.
a) When “RC OK” is displayed,
remote controllers have no problem.
Turn the power off, and on again to
check. If abnormality generates again,
replace indoor controller board.
b) When “RC NG” is displayed,
replace remote controller.
E0
or
E4
6Noise has entered into the
transmission wire of remote
controller.
c) When “RC E3” is displayed,
d) When “ERC 00-06” is displayed,
[ c),d)→Noise may be causing abnormality. ]
∗ If the unit is not normal after replacing
indoor controller board in group control,
the indoor controller board of address
“0” may be abnormal.
Remote controller transmission
12 remote controller are set as
“main.” (In case of 2 remote
controllers)
2Remote controller is connected
with 2 indoor units or more.
3Repetition of refrigerant
address
4Defective transmitting receiving
circuit of remote controller
5Defective transmitting receiving
circuit of indoor controller board
6Noise has entered into trans-
mission wire of remote controller.
1Set a remote controller to main, and the
other to sub.
error(E3)/signal receiving error(E5)
1Abnormal if remote controller could not
find blank of transmission path for 6 sec-
onds and could not transmit.
2Remote controller is connected with only 1
indoor unit.
3The address changes to a separate setting.
(Error code: E3)
2Remote controller receives transmitted
data at the same time, compares the
data, and when detecting it, judges
different data to be abnormal 30
continuous times. (Error code: E3)
4~6 Diagnose remote controller.
a) When “RC OK” is displayed, remote con-
trollers have no problem.
Turn the power off, and on again to check.
When becoming abnormal again, replace
indoor controller board.
b)When “RC NG” is displayed, replace
remote controller.
E3
or
E5
1Abnormal if indoor controller board could
not find blank of transmission path.
(Error code: E5)
2Indoor controller board receives trans-
mitted data at the same time, compares
the data,and when detecting it, judges
different data to be abnormal 30
continuous times. (Error code: E5)
c)When “RC E3” or “ERC 00-66” is displayed,
noise may be causing abnormality.
17
Abnormal point and detection method
Countermeasure
Error Code
Cause
Indoor/outdoor unit communication
error (Signal receiving error)
∗ Check LED display on the outdoor control cir-
cuit board. (Connect A-control service tool,
PAC-SK52ST.)
Refer to EA-EC item if LED displays EA-EC.
1Check disconnection or looseness of indoor/
outdoor unit connecting wire of indoor unit or
outdoor unit.
Check all the units in case of twin indoor
unit system.
2-4Turn the power off, and on again to
check. If abnormality generates again,
replace indoor controller board or outdoor
controller circuit board.
1Contact failure, short circuit or,
miswiring (converse wiring) of
indoor/outdoor unit connecting
wire
2Defective transmitting receiving
circuit of indoor controller board
3Defective transmitting receiving
circuit of indoor controller board
4Noise has entered into indoor/
outdoor unit connecting wire.
1Abnormal if indoor controller board
cannot receive any signal normally for 6
minutes after turning the power on.
2Abnormal if indoor controller board
cannot receive any signal normally for 3
minutes.
3Consider the unit as abnormal under the
following condition: When 2 or more
indoor units are connected to 1
outdoor unit, indoor controller board
cannot receive a signal for 3 minutes
from outdoor controller circuit board, a
signal which allows outdoor controller
circuit board to transmit signals.
E6
∗ Other indoor controller board may have
defect in case of twin indoor unit system.
Indoor/outdoor unit communication
error (Transmitting error)
Abnormal if “1” receiving is detected 30
times continuously though indoor controller
board has transmitted “0”.
1Defective transmitting receiving 1-3Turn the power off, and on again to
circuit of indoor controller board
2Noise has entered into power
supply.
check. If abnormality generates again,
replace indoor controller board.
E7
Fb
3Noise has entered into outdoor
control wire.
Indoor controller board
1Defective indoor controller
board
1Replace indoor controller board.
Abnormal if data cannot be normally read
from the nonvolatile memory of the indoor
controller board.
Remote controller control board
1Abnormal if data cannot be normally
read from the nonvolatile memory of the
remote controller control board.
(Error code: E1)
1Defective remote controller
1Replace remote controller.
E1
or
E2
2Abnormal if the clock function of remote
controller cannot be normally operated.
(Error code: E2)
Forced compressor stop
1 Drain pump trouble
1 Check the drain pump.
(due to water leakage abnormality)
1
When the intake temperature subtracted
with liquid pipe temperature is less than
-10:(14˚F), drain sensor detects
2 Drain defective
· Drain pump clogging
· Drain pipe clogging
2 Please confirm whether water can be
drained.
whether it is soaked in the water or not
at the interval of 90 seconds. (Drain
pump will start operating when the drain sen-
sor detects to be soaked in the water.)
3 Open circuit of drain sensor
3 Confirm the resistance of the drain sensor.
side heater
2The unit has a water leakage abnormality
when the following conditions, a and b,
are satisfied while the above-mentioned
detection is performed.
a) The drain sensor detects to be
soaked in the water 10 times in a row.
b) The intake temperature subtracted
with liquid pipe temperature is detect-
ed to be less than -10:(14˚F) for a
total of 30 minutes. (When the drain
sensor detects to be NOT soaked in
the water, the detection record of a
and b will be cleared.)
4 Contact failure of drain sensor 4 Check the connector contact failure.
connector
5 Dew condensation on drain
sensor
5 Check the drain sensor leadwire mounted.
Check the filter clogging.
· Drain water trickles along
lead wire.
· Drain water waving due to filter
clogging
PA
(2502)
(2500)
6 Extension piping connection
6 Check the piping connection.
difference at twin system
3The drain sensor detection is performed
in operations other than cooling. (When
the unit stops operating, during heating
or fan operation, when the unit stops
because of some abnormality)
7 Miswiring of indoor/ outdoor
connecting at twin system
7 Check the indoor/ outdoor connecting wires.
*Once the water leakage abnormality is
detected, abnormality state will not be
released until the main power is reset.
8 Room temperature thermistor /
liquid pipe temperature thermis-
tor detection is defective.
8 Check the room temperature display of
remote controller.
Check the indoor liquid pipe temperature
display of outdoor controller board.
18
10-3. TROUBLESHOOTING BY INFERIOR PHENOMENA
Note: Refer to the manual of outdoor unit for the detail of remote controller.
Phenomena
Cause
Countermeasure
(1)LED2 on indoor controller board
is off.
• When LED1 on indoor controller board is also off.
1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power
door unit.
supply terminal block (L1,L2).
• When AC 208/230V is not detected,
check the power wiring to outdoor unit
and the breaker.
• When AC 208/230V is detected,
check 2 (below).
2 Check the voltage between outdoor
terminal block S1 and S2.
2 Defective outdoor controller circuit board
• When AC 208/230V is not detected.
—Check the fuse on outdoor controller
circuit board.
—Check the wiring connection.
• When AC 208/230V is detected,
check 3 (below).
3 Check the voltage between indoor terminal
block S1 and S2.
3 Power supply of 208/230V is not supplied to indoor
unit.
• When AC 208/230V is not detected,
check indoor/outdoor unit connecting
wire for mis-wiring.
• When AC 208/230V is detected,
check 4 (below).
4 Check voltage output from CN2S on indoor
power board (DC13.1V). Refer to 10-6-1.
• When no voltage is output, check the
wiring connection.
4 Defective indoor power board
• When output voltage is between
DC12.5V and DC13.7V, check 5
(below).
5 Check the wiring connection between
indoor controller board and indoor power
board. Check the fuse on indoor controller
board. If no problems are found, indoor
controller board is defective.
5 Defective indoor controller board
(For the separate indoor/outdoor unit power sup-
ply system)
1 Power supply of 208/230V AC is not supplied to
indoor unit.
1 Check the voltage of indoor power supply
terminal block (L1,L2).
• When AC208/230V is not detected,
check the power supply wiring.
• When AC208/230V is detected, check
2 (below).
2 Check that there is no problem in the
method of connecting the connectors.
• When there are problems in the method
of connecting the connectors, connect
the connector correctly referring to instal-
lation manual of an optional kit.
2The connectors of the optional replacement kit are
not used.
• When there is no problem in the
method of connecting the connectors,
check 3 (below).
3 Check voltage output from CNDK on
indoor controller board.
3 Defective indoor controller board
• When AC208/230V is not detected.
—Check the fuse on indoor controller board.
—Check the wiring connection between
indoor power supply terminal block and
CND on indoor controller board.
• When AC208/230V is detected, check
4 (below).
4 Check voltage output from CN2S on
indoor power board.
4 Defective indoor power board
• When no voltage output, check the
wiring connection between CNDK on
indoor controller board and CNSK on
indoor power board.
If no problem are found, indoor power
board is defective.
• When DC12.5~13.7V is detected,
check the wiring connection between
CN2S on indoor power board and
CN2D on indoor power board.
If no problem are found, indoor con-
troller board is defective.
19
Note: Refer to the manual of the outdoor unit for the detail of remote controller.
Phenomena
Cause
Countermeasure
(1)LED2 on indoor controller board
is off.
• When LED1 on indoor controller board is lit.
1 Mis-setting of refrigerant address for outdoor unit
(There is no unit corresponding to refrigerant
address “0”.)
1 Reconfirm the setting of refrigerant
address for outdoor unit.
Set the refrigerant address to “0”.
(For grouping control system under
which 2 or more outdoor units are
connected, set one of the units to “0”.)
Set refrigerant address using SW1 (3-6)
on outdoor controller circuit board.
(2)LED2 on indoor controller board
is blinking.
• When LED1 on indoor controller board is also blinking. Check indoor/outdoor unit connecting wire
Connection failure of indoor/outdoor unit connecting for connection failure.
wire
• When LED1 is lit.
1 Check the connection of remote con-
troller wires in case of twin indoor unit
system. When 2 or more indoor units are
wired in one refrigerant system, connect
remote controller wires to one of those
units.
1 Miswiring of remote controller wires
Under indoor unit system, 2 indoor units are wired
together.
2 Refrigerant address for outdoor unit is wrong or not 2 Check the setting of refrigerant address
set.
in case of grouping control system.
Under grouping control system, there are some units
whose refrigerant address is 0.
If there are some units whose refrigerant
addresses are 0 in one group, set one of
the units to 0 using SW1 (3-6) on outdoor
controller circuit board
.
3 Shortcut of remote controller wires
4 Defective remote controller
34 Remove remote controller wires and
check LED2 on indoor controller board.
• When LED2 is blinking, check the
shortcut of remote controller wires.
• When LED2 is lit, connect remote
controller wires again and:
if LED2 is blinking, remote controller
is defective; if LED2 is lit, connection
failure of remote controller terminal
block etc. has returned to normal.
(3)Upward/downward vane
performance failure
1The vane is not downward during defrosting and
heat preparation and when the thermostat is OFF in
HEAT mode. (Working of COOL protection function)
2 Vane motor does not rotate.
1 Normal operation (The vane is set to hor-
izontal regardless of remote control.)
2 Check 2 (left).
• Check the vane motor. (Refer to “How
to check the parts”.)
• Check for breaking of wire or connec-
tion failure of connector.
• Defective vane motor
• Breaking of wire or connection failure of connector
• Up/down vane setting is “No vanes”.
• Check “Up/down vane setting”. (Unit
function selection by remote controller).
3 Normal operation (Each connector on
vane motor side is disconnected.)
3 Upward/downward vane does not work.
• The vane is set to fixed position.
(4)Receiver for wireless remote
controller
1 Weak batteries of wireless remote controller
1 Replace batteries of the wireless remote
controller.
2 Contact failure of connector (CNB) on wireless
remote controller board(Insert failure)
3 Contact failure of connector (CN90) on indoor con-
troller board(Insert failure)
4 Contact failure of connector between wireless
remote controller board and indoor controller board
2~4
Check contact failure of each connector.
If no problems are found in connector,
replace indoor controller board.
When the same trouble occurs even if
indoor controller board is replaced,
replace wireless remote controller
board.
20
10-4. WHEN WIRED REMOTE CONTROLLER OR INDOOR UNIT
MICROCOMPUTER TROUBLES
1. If there is not any other problem when trouble occurs, emergency operation starts as the indoor controller board switch
(SWE) is set to ON.
During the emergency operation the indoor unit operates with Indoor fan at high speed.
2. For emergency operation of cooling or heating
In emergency operation for COOL or HEAT, setting of the switch (SWE) in the indoor controller board and outdoor unit
emergency operation are necessary.
3. Before you activate emergency operation, check the following points:
(1) Emergency operation cannot be activated when:
· the outdoor unit malfunctions.
· the indoor fan malfunctions.
(2) Emergency operation becomes continuous only by switching the power source on / off. ON / OFF on the remote control
or temperature control etc. does not function.
(3) Avoid operating for a long time when the outdoor unit begins defrosting while emergency operation of the heating is acti-
vated, because it will start to blow cold air.
(4) Emergency cooling should be limited to 10 hours maximum. (The indoor unit heat exchanger may freeze.)
(5) After emergency operation has been deactivated, set the switches etc. to their original positions.
(6) Movement of the vanes does not work in emergency operation, therefore you have to slowly set them manually to the
appropriate position.
21
10-5. HOW TO CHECK THE PARTS
PCA-A24GA PCA-A30GA
PCA-A24GA1 PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
Parts name
Check points
Room temperature
thermistor (TH1)
Disconnect the connector then measure the resistance using a tester.
(At the ambient temperature 10:(50˚F)~30:(86˚F))
Pipe temperature
thermistor
(TH2)
Normal
Abnormal
(Refer to the next pege for a detail.)
Condenser/evaporator
temperature thermistor
(TH5)
4.3k"~9.6k"
Open or short
Measure the resistance between the terminals using a tester.
(Winding temperature 20:(68˚F))
Fan motor (MF)
Relay connector
1
Red
1
Normal
Motor terminal
White
2
or
PCA-A24GA(1)
PCA-A30GA(1)
PCA-A36GA(1)
PCA-A42GA(1)
2
Abnormal
Relay connector
3
Black
3
41.1"
Red–Black
60.8"
Protector
OFF:130i 5:
ON :80i 20:
Open or short
54.3"
White–Black
55.1"
Vane motor (MV)
Normal
Abnormal
Connector
4Orange
PCA-A24·30GA(1)
Red
M
5
Brown–Yellow
Brown–Blue
Red–Orange
Red–Pink
Pink
2
Open or short
140~160"
Yellow Brown Blue
3 6 1
Normal
Pink
4
Abnormal
Connector
PCA-A36·42GA(1)
M
Red–Yellow
Red–Blue
Red–Blue
Red–Pink
2 Orange
Red
5
140~160"
Open or short
Yellow Blue
3
1
22
<Thermistor Characteristic graph>
< Thermistor for lower temperature >
50
40
30
20
10
0
Room temperature thermistor(TH1)
Thermistor for
lower temperature
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R0=15kΩ ± 3%
Fixed number of B=3480 ± 2%
1
1
t(:):Rt=15exp { 3480(
) }
273+t
273
1
1
T(˚F):Rt=15exp { 3480(
) }
T-32
1.8
273+
273
0: (32˚F)
10: (50˚F)
20: (68˚F)
25: (77˚F)
30: (86˚F)
40:(104˚F)
15kΩ
9.6kΩ
6.3kΩ
5.4kΩ
4.3kΩ
3.0kΩ
-20 -10
0
10 20 30 40 50
:
-4 -14 32 50 68 86 104 122 ˚F
Temperature
10-6.TEST POINT DIAGRAM
10-6-1. Power board
PCA-A24GA
PCA-A24GA1
PCA-A30GA
PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
CN2S
Connect to the indoor controller board (CN2D)
Between 1 to 3 12.6-13.7V DC (Pin1 (+))
CNSK
Connect to the indoor controller board
(CNDK)
Between 1 to 3 208/230V AC
23
10-6-2. Indoor controller board
PCA-A24GA
PCA-A24GA1
PCA-A30GA
PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
CN2D
LED1
Power supply (I.B)
LED2
Power supply (R.B)
LED3
Connect to the indoor
power board (CN2S)
(12.5~13.7V DC)
Transmission (Indoor/outdoor)
CN3C
Transmission
(Indoor/outdoor)
(0~24V DC)
CN22
Connect to the terminal
block(TB5)
(Remote controller connecting
wire)
(10.4~14.6V DC)
CNDK
Connect to the indoor
power board (CNSK)
(208/230V AC)
CN20
Room temperature
thermistor (TH1)
CN21
Pipe temperature
thermistor/Liquid (TH2)
CN29
Condenser/evaporator
temperature thermistor (TH5)
FUSE
(6.3 A 250 V)
CN31
Drain sensor (DS)
CND
Power supply input
(208/230V AC)
CN90
Connect to the wireless
remote controller board
(CNB)
CN6V
Vane motor output
(MV)
CNP
Drain-pump output
(DP)
CN41
Connector (HA terminal-A)
(208/230V AC)
CN51
Centrally control
CN24
Heater output
(12V DC)
CN32
Remote switch
SWE
CN2L
Connector
(LOSSNAY)
Emergency operation
FAN
Fan motor output
Jumper wire J41, J42
Pair number setting with
wireless remote controller
SW2
Capacity setting
SW1
Model setting
24
10-7. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE
Each function is controlled by the dip switch and the jumper wire on control P.C. board.
SW1 and SW2 are equipped only for service parts.
Model setting and capacity setting are memorized in the nonvolatile memory of the control P.C. board of
the unit.
(Marks in the table below) Jumper wire ( : Short
Setting by the dip switch and jumper wire
: Open)
Jumper wire
Remarks
Functions
For service board
Model
settings
SW1
1 2 3 4 5
ON
OFF
Service board
MODELS
Capacity
settings
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
SW2
PCA-A24GA
PCA-A24GA1
ON
OFF
PCA-A30GA
PCA-A30GA1
ON
OFF
PCA-A36GA
PCA-A36GA1
ON
OFF
PCA-A42GA
PCA-A42GA1
ON
OFF
<Initial setting>
Wireless remote controller: 0
Control PCB: (for both J41 and J42)
Four pair number settings are supported.
The pair number settings of the wireless remote
controller and indoor control PCB (J41/J42) are
given in the table on the left.
(' ' in the table indicates the jumper wire is disco-
nnected.)
Control PCB setting
Wireless remote
controller setting
Pair number
setting with
wireless
J41
J42
0
1
2
J41
J42
remote
controller
3 ~ 9
Model
Without TH5
With TH5
JP1
There is no jumper (JP1) because these models
have the cond./eva. temperature thermistor (TH5).
Unit type
setting
JP1
JP3
Indoor
Indoor controller board type
For product
JP3
controller
board type
setting
Service parts
25
11
DISASSEMBLY PROCEDURE
PCA-A24GA PCA-A30GA
PCA-A24GA1 PCA-A30GA1
PCA-A36GA
PCA-A36GA1
PCA-A42GA
PCA-A42GA1
OPERATING PROCEDURE
PHOTOS & ILLUSTRATIONS
1. Removing the air intake grille
Figure 1
(1) Slide the intake grille holding 2 knobs backward to open
the intake grille.
(2) When the intake grille left open, push the stoppers on the
rear 2 hinges to pull out the intake grille.
Intake grille
slide
Intake grille
Holding knobs
Hinges
Pull out the intake grille
2. Removing the electrical box
Figure 2
(1) Remove the air intake grille. (See the figure 1)
(2) Remove the screw from the beam and remove the beam.
(3) Remove the screws from the electrical cover, and
remove the electrical cover.
Beam
(4) Disconnect CN6V, CN21 and CN29.
(5) Remove the screws from the electrical box and pull out
the electrical box.
Slide to the left
<Electrical parts in the electrical box>
Terminal block (for indoor / outdoor connecting line)<TB4>
Terminal block (for power supply)<TB2>
Terminal block (for remote controller)<TB5>
Fan motor capacitor<C>
Clamp
Screw(electrical cover)
Electrical cover
Screw(electrical box)
Indoor control board<I.B>
Power board<P.B>
Photo 1
(There might not be TB2 depending on the model.)
Fan motor
capacitor
Power board
Terminal block
(remote control)
Indoor control
board
Terminal block
(power supply)
Terminal block
(Indoor / outdoor
connecting wire)
26
OPERATING PROCEDURE
PHOTOS & ILLUSTRATIONS
3. Removing the fan motor <MF>
Photo 2
(1) Remove the intake grille.
(2) Disconnect the fan motor connector.
(3) Remove the screw for removing the motor support at both
left and right side.
Motor
set screws
Screws
(4) Loosen the set screws at the fan motor side of the con-
necting joint.
(5) Slide the fan motor <MF> to the left side and pull it out.
connecting joint
Motor support
4. Removing the sirocco fan
Photo 3
(1) Remove the air intake grille.
(2) Remove 1 beam.
(3) Remove the lower casing while pressing the stoppers at
upper side of the casing.
Casing
Catch
Motor
Set screw
(4) Loosen the set screws at the connecting joint.
(5) Remove the sirocco fan and shaft together by sliding the
shaft to the left.
(Note)
Make sure that the upper side casing is snapped to the fan
plate securely with catch.
Shaft
Sirocco fan
Connecting joint
Bearing
Screws
5. Removing the side panel
Figure 3
(1) Remove the air intake grille.
side panel
(2) Remove the screw from the side panel, and remove the
side panel by sliding the panel to the front.
sliding the panel
to the front
screw
27
OPERATING PROCEDURE
PHOTOS
6. Removing the vane motor <MV>
Photo 4
(1) Remove the air intake grille. (See the figure 1)
(2) Remove the left side panel. (See the figure 3)
(3) Remove the relay connector of vane motor.
(4) Remove the electrical box.
Relay connector of
the vane motor
Screw
(5) Remove the screws of vane motor, then remove vane
motor <MV>.
(Note)
Connect the lead wires and connectors properly and place
them in the proper position so that the wires are not pinched
by other parts.
Vane motor
Photo 5
7. Removing the Indoor coil thermistor <TH2/TH5>
(1) Remove the air intake grille. (See the figure 1)
(2) Remove the right side panel. (See the figure 3)
(3) Remove the relay connector of the pipe thermistor
<TH2/TH5>.
Relay connector of
the pipe thermistor
Check
panel
Screw
(4) Remove the screw, and remove the check panel.
(5) Extract the indoor coil thermistor <TH2/TH5> from the
holder.
<Caution for the installation>
There is a possibility for the short circuit when connector gets
wet by water through the thermistor lead wire.
Therefore, lead wire of the indoor coil thermistor <TH2/TH5>
should be tied as shown in the photo 6.
Left side
panel
Photo 6
Hold
Indoor coil thermistor
Screws
Clamp
8. Removing the Under panel
Photo 7
(1) Remove the air intake grille. (See the figure 1)
(2) Remove the beam.
(3) Remove the side panel (right and left). (See the figure 3)
(4) Remove the 9 screws of the under panel, then remove
the under panel.
w Weight of the under panel : Approx. 2kg.
Under panel
28
OPERATING PROCEDURE
PHOTOS
9. Removing the drain pan
Photo 8
(1) Remove the air intake grille. (See the figure 1)
(2) Remove the beam.
(3) Remove the side panels of right and left. (See the figure 3)
(4) Remove the under panel. Remove the screws of the right
and left side drain pan.
(5) Remove the 2 insulations in centre of the drain pan, and
after removing the 2 screws, remove the drain pan.
(Note)
Please be aware that there might be drain left in the drain
pan when you remove the drain pump (option).
Screw
Drain pan
Screw
(Insulation)
Screw
10. Removing the guide vane
Photo 9
(1) Remove the intake grille. (See the figure 1)
(2) Remove the beam.
(3) Remove the side panels (right and left). (See the figure 3)
(4) Remove the under panel. (See the photo 7)
(5) Remove the drain pan. (See the photo 8)
(6) Remove the screw from the guide vane, then remove the
guide vane.
Screw
Drain pan
Guide vane
Photo 10
11. Removing the Auto vane
(1) Remove the intake grille. (See the figure 1)
(2) Remove the left side panel. (See the figure 3)
(3) Remove the left side box.
(4) Remove the under panel.
(5) Remove the screw from the auto vane.
(6) Slide the auto vane to the right side and pull the auto
vane out.
Screw
Auto vane
29
OPERATING PROCEDURE
PHOTOS
12. Removing the heat exchanger
Photo 11
(1) Remove the air intake grille. (See the figure 1)
(2) Remove the beam.
(3) Remove the side panel (right and left). (See the figure 3)
(4) Disconnect the relay connector of the pipe thermistor.
(5) Remove the under panel. (See the photo 7)
(6) Remove the drain pan. (See the photo 8)
(7) Unscrew the screw of the pipe cover, and remove the
pipe cover.
Pipe
support
Screws
(8) Unscrew the screw of the pipe support, and remove the
pipe support.
(9) Unscrew the screw of the heat exchanger, and remove
the heat exchanger.
Screws
Heat
exchanger
Remove the heat exchanger with care. Since this is quite
heavy, removing work should be done with more than 2
people.
Pipe cover
wWeight of heat exchanger : Approx. 5.3kg
30
12
PARTS LIST (non-RoHS compliant)
FAN AND FUNCTIONAL PARTS
PCA-A24GA PCA-A30GA
PCA-A36GA PCA-A42GA
16
1
15
2
3
4
5
14
13
12
11
10
6
7
8
9
Q'ty/set
PCA-A
Wiring Recom-
Diagram mended
Remarks
(Drawing No.)
No.
1
Parts No.
Parts Name
Specifications
24/30
36/42
Symbol
Q'ty
GA
R01 29J 130 MOTOR LEG
R01 35J 130 MOTOR LEG
1
1
1
2 R01 43E 126 PIECE(MOTOR)
1
1
T7W 30J 762 FAN MOTOR
T7W E14 762 FAN MOTOR
D09C4P70MS
D10C4P90MS
MF
MF
3
1
1
4 R01 700 116 SHAFT JOINT
1
2
R01 E17 114 SIROCCO FAN
R01 E19 114 SIROCCO FAN
5
2
1
1
1
6 R01 E26 202 ROOM TEMPERATURE THERMISTOR
7 R01 29J 100 SHAFT
8 R01 E00 103 SLEEVE BEARING
1
1
1
1
TH1
R01 29J 145 BEARING SUPPORT
R01 35J 145 BEARING SUPPORT
9
1
1
10 R01 17J 524 DRAIN PLUG
1
1
T7W E20 529 DRAIN PAN ASSY
T7W E15 529 DRAIN PAN ASSY
R01 17J 110 CASING
R01 35J 110 CASING
R01 E15 114 SIROCCO FAN
R01 E20 114 SIROCCO FAN
11
1
3
3
1
12
13
1
1
1
14 R01 E27 202
15 R01 17J 202 COND/EVA TEMPERATURE THERMISTOR
LIQUID PIPE TEMPERATURE THERMISTOR
1
1
1
TH2
TH5
T7W H23 480 HEAT EXCHANGER
T7W H24 480 HEAT EXCHANGER
16
1
31
STRUCTURAL PART
PCA-A24GA
24 23 22 21
20
19
18
PCA-A30GA
1
2
17
16
15
PCA-A36GA
PCA-A42GA
3
4
5
14
13
12
6
7
11
8
10
9
Part numbers that are circled are not shown in the figure.
Q'ty/set
PCA-A
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Remarks
(Drawing No.)
No.
Parts No.
Parts Name
Specifications
24/30
36/42
GA
R01 17J 662
R01 35J 662
2 R01 17J 809
1
LEFT SIDE PANEL
LEFT SIDE PANEL
LEFT LEG
S.PLATE-L
S.PLATE-L
1
1
1
1
1
T7W E01 666
T7W E00 666
3
1
T7W E05 676
T7W E00 676
1
REAR PANEL
REAR PANEL
GRILLE HINGE
GRILLE CATCH
GRILLE ASSY
L.L FILTER
UNDER PANEL
W.BOARD CASE
S.PLATE-R
4
1
4
4
2
2
1
1
5 R01 17J 061
6 R01 17J 054
7 R01 17J 691
8 R01 A14 500
9 R01 29J 669
10 T7W E01 070
4
4
2
2
1
1
1
T7W E01 665
T7W E00 665
11
S.PLATE-R
1
R01 17J 661
R01 35J 661
1
RIGHT SIDE PANEL
RIGHT SIDE PANEL
RIGHT LEG
SERVICE PANEL
SERVICE PANEL
RIGHT SIDE BOX
RIGHT SIDE BOX
FRONT PANEL
FRONT PANEL
AUTO VANE
12
1
1
13
14
R01 17J 808
T7W E05 668
T7W E01 668
R01 17J 067
R01 35J 067
T7W E05 651
T7W E00 651
R01 29J 002
R01 E03 002
R01 E00 033
R01 E01 033
R01 37J 085
R01 37J 087
R01 37J 086
T7W E01 501
T7W 051 501
1
1
1
1
1
1
1
1
1
2
15
16
17
18
AUTO VANE
VANE SUPPORT
VANE SUPPORT
G.V ASSY-6R
G.V ASSY-6C
G.V ASSY-6L
2
1
1
1
19
20
21
1
1
1
1
AIR FILTER
AIR FILTER
22
23
24
1
1
R01 17J 068 LEFT SIDE BOX
R01 E00 068 LEFT SIDE BOX
R01 29J 223 VANE MOTOR
R01 35J 223 VANE MOTOR
R01 17J 523 JOINT SOCKET
T7W E00 072 DRAIN HOSE COVER
1
1
MV
MV
1
1
1
25
26
1
1
32
ELECTRICAL PARTS
PCA-A24GA
PCA-A30GA
PCA-A36GA
PCA-A42GA
6
1
2
3
4
5
TEMP.
ON/OFF
8
7
Q'ty/ set
PCA-A
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Remarks
(Drawing No.)
No.
1
Parts No.
Parts Name
Specifications
24/30
36/42
GA
1
T7W E18 255
T7W E19 255
T7W E56 310
T7W E41 716
R01 E18 246
R01 E21 246
T7W E35 313
T7W A01 305
T7W E14 713
CAPACITOR
CAPACITOR
4= 440V
C
1
1
1
1
1
1
1
1
5= 440V
C
1
1
1
1
1
1
1
2
3
4
5
6
7
8
INDOOR CONTROLLER BOARD
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
POWER BOARD
I.B
3P(L1,L2,GR)
3P(S1,S2,S3)
2P(1,2)
TB2
TB4
TB5
P.B
REMOTE CONTROLLER CORD
REMOTE CONTROLLER PAR-21MAA
R.B
33
13
RoHS PARTS LIST
FAN AND FUNCTIONAL PARTS
PCA-A24GA1 PCA-A30GA1
PCA-A36GA1 PCA-A42GA1
16
1
15
2
3
4
5
14
13
12
11
10
6
7
8
9
Q'ty/set
PCA-A
Wiring Recom-
Diagram mended
Remarks
(Drawing No.)
No.
Parts Name
Specifications
Parts No.
24/30
36/42
Symbol
Q'ty
GA1
G R01 30J 130 MOTOR LEG
G R01 32J 130 MOTOR LEG
G R01 45E 126 PIECE(MOTOR)
G T7W 40J 762 FAN MOTOR
G T7W E31 762 FAN MOTOR
G R01 800 116 SHAFT JOINT
G R01 E17 114 SIROCCO FAN
G R01 E19 114 SIROCCO FAN
G R01 H08 202 ROOM TEMPERATURE THERMISTOR
G R01 30J 100 SHAFT
1
1
2
3
4
5
1
1
1
1
D09C4P70MS
D10C4P90MS
MF
MF
1
1
1
2
2
1
1
1
6
7
8
1
1
1
1
TH1
G R01 E02 103 SLEEVE BEARING
G R01 30J 145 BEARING SUPPORT
G R01 36J 145 BEARING SUPPORT
9
1
1
10 G R01 18J 524 DRAIN PLUG
1
1
G T7W E30 529 DRAIN PAN ASSY
G T7W E31 529 DRAIN PAN ASSY
G R01 18J 110 CASING
G R01 19J 110 CASING
G R01 E15 114 SIROCCO FAN
G R01 E20 114 SIROCCO FAN
11
1
3
3
1
12
13
1
1
1
14 G R01 H10 202
15 G R01 H09 202
LIQUID PIPE TEMPERATURE THERMISTOR
1
1
1
TH2
TH5
COND/EVA TEMPERATURE THERMISTOR
G T7W H23 480 HEAT EXCHANGER
G T7W H24 480 HEAT EXCHANGER
16
1
34
STRUCTURAL PART
PCA-A24GA1
24 23 22 21
20
19
18
PCA-A30GA1
PCA-A36GA1
PCA-A42GA1
1
2
17
16
15
3
4
5
14
13
12
6
7
11
8
10
9
Part numbers that are circled are not shown in the figure.
Q'ty/set
PCA-A
24/30 36/42
GA1
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Remarks
(Drawing No.)
No.
Parts No.
Parts Name
Specifications
G
G
G
G
G
G
G
G
G
G
G
G
R01 18J 662
R01 36J 662
R01 18J 809
T7W E02 666
T7W E03 666
T7W E07 676
T7W E08 676
R01 18J 061
R01 19J 054
R01 19J 691
R01 A29 500
R01 30J 669
T7W E02 070
T7W E03 665
T7W E04 665
R01 18J 661
R01 36J 661
R01 18J 808
T7W E10 668
T7W E11 668
R01 18J 067
R01 36J 067
T7W E08 651
T7W E09 651
R01 30J 002
R01 E14 002
R01 E02 033
R01 E03 033
R01 38J 085
R01 38J 087
R01 38J 086
T7W E03 501
T7W E04 501
1
LEFT SIDE PANEL
LEFT SIDE PANEL
LEFT LEG
S.PLATE-L
S.PLATE-L
REAR PANEL
REAR PANEL
GRILLE HINGE
GRILLE CATCH
GRILLE ASSY
L.L FILTER
UNDER PANEL
W.BOARD CASE
S.PLATE-R
1
2
3
1
1
1
1
1
1
4
1
4
4
2
2
1
1
5
6
7
8
9
4
4
2
2
1
1
1
10 G
G
G
G
G
11
S.PLATE-R
1
1
RIGHT SIDE PANEL
RIGHT SIDE PANEL
RIGHT LEG
SERVICE PANEL
SERVICE PANEL
RIGHT SIDE BOX
RIGHT SIDE BOX
FRONT PANEL
FRONT PANEL
AUTO VANE
12
1
1
13 G
1
1
G
G
G
G
G
G
G
G
14
1
1
1
1
1
1
1
2
15
16
17
AUTO VANE
G
G
VANE SUPPORT
VANE SUPPORT
G.V ASSY-6R
G.V ASSY-6C
G.V ASSY-6L
18
2
1
1
1
19 G
20 G
21 G
1
1
1
1
G
G
G
G
G
G
AIR FILTER
AIR FILTER
22
1
1
R01 18J 068 LEFT SIDE BOX
R01 E01 068 LEFT SIDE BOX
R01 E10 223 VANE MOTOR
R01 E12 223 VANE MOTOR
R01 18J 523 JOINT SOCKET
T7W E01 072 DRAIN HOSE COVER
1
1
23
MV
MV
24
1
1
1
25 G
26 G
1
1
35
ELECTRICAL PARTS
PCA-A24GA1
PCA-A30GA1
PCA-A36GA1
PCA-A42GA1
6
1
2
3
4
5
TEMP.
ON/OFF
8
7
Q'ty/ set
PCA-A
24/30 36/42
GA1
Wiring Recom-
Diagram mended
Remarks
(Drawing No.)
No.
1
Parts No.
Parts Name
Specifications
Symbol
Q'ty
T7W E18 255
T7W E19 255
T7W E56 310
T7W E41 716
R01 E18 246
R01 E21 246
T7W E35 313
T7W A01 305
T7W E14 713
G
G
G
G
G
G
G
G
G
CAPACITOR
CAPACITOR
4= 440V
1
C
5= 440V
1
C
2
3
4
5
6
7
8
1
1
1
1
1
1
1
1
1
1
1
1
1
1
INDOOR CONTROLLER BOARD
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
POWER BOARD
I.B
3P(L1,L2,GR)
3P(S1,S2,S3)
2P(1,2)
TB2
TB4
TB5
P.B
REMOTE CONTROLLER CORD
REMOTE CONTROLLER PAR-21MAA
R.B
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Jun. 2007 No.OC368 REVISED EDITION-B PDF 9
Distributed in Aug. 2006 No.OC368 REVISED EDITION-A PDF 9
Distributed in Feb. 2006 No.OC368 PDF 10
New publication, effective Jun. 2007
Specifications subject to change without notice.
Made in Japan
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