Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
ON/OFF TEMP
ON/OFF
TEMP.
SPLIT-TYPE, AIR CONDITIONERS
SERVICE MANUAL
Indoor unit
[Model names] [Service Ref.]
PLA-RP100AA2
PLA-RP125AA2
PLA-RP140AA2
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
July 2006
No. OC357
REVISED EDITION-A
Revision:
•
RoHS PARTS LIST
• Some descriptions have
been modified.
• Please void OC357.
Note:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
• For servicing of RoHS compliant products, refer to the
RoHS Parts List.
is added.
CONTENTS
1. REFERENCE MANUAL······································2
2. SAFETY PRECAUTION···································2
3. PART NAMES AND FUNCTIONS ···················6
4. SPECIFICATIONS············································9
5. NOISE CRITERION CURVES························10
6. OUTLINES AND DIMENSIONS ·····················11
7.
Model name
indication
INDOOR UNIT
WIRELESS REMOTE
CONTROLLER
WIRED REMOTE
CONTROLLER
WIRING DIAGRAM
8.
REFRIGERANT SYSTEM DIAGRAM
9. TROUBLESHOOTING ···································14
10. DISASSEMBLY PROCEDURE ······················31
11. PARTS LIST ···················································34
12. RoHS PARTS LIST ········································37
············································12
··················13
Page 2
1
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
Use “low residual oil piping”
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
Use ESTER , ETHER or HAB as the lubricant to
coat flares and flange connection parts.
If large amount of mineral oil enter, that can cause
deterioration of refrigerant oil etc.
Use liquid refrigerant to charge the system.
If gas refrigerant is used to seal the system, the composition
of the refrigerant in the cylinder will change and performance
may drop.
Do not use a refrigerant other than R407C.
If another refrigerant (R22, etc.) is used, the chlorine in the
refrigerant may cause the lubricant deterioration.
Use a vacuum pump with a reverse flow check valve.
The vacuum pump oil may flow back into the refrigerant
cycle and cause the lubricant deterioration.
Store the piping to be used during installation
indoors with keep both ends sealed until just
before brazing.
(Store elbows and other joints in a plastic bag.)
If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may result.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Service Ref.
PUHZ-RP100/125/140VHA(1)
PUHZ-RP100/125/140YHA(1)
PUHZ-RP200/250YHA(1)
PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK
SUZ-KA·VA.TH
Service Manual No.
OC334
OC338
OC336
PUHZ-RP100/125/140VHA2
PUHZ-RP100/125/140YHA2
OC374
PU(H)-P100VHA.UK
PU(H)-P100/125/140YHA.UK
OC379
PUHZ-P100/125/140VHA.UK
OC359
OC322
Series (Outdoor unit)
PUHZ-RP·VHA(-A)
PUHZ-RP·YHA(-A)
PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK
Manual No.
OCS01
OCS02
PUHZ-RP·VHA2
PUHZ-RP·YHA2
OCS05
PUHZ-P·VHA
OCS06
PU(H)-P·VHA
PU(H)-P·YHA
OCS07
REFERENCE MANUAL
1-1. OUTDOOR UNIT’S SERVICE MANUAL
1-2. TECHNICAL DATA BOOK
2
SAFETY PRECAUTION
CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilising refrigerant R407C
2
Page 3
[1] Cautions for service
Gravimeter
Unit
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[2] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name Specifications
1 Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2 Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3 Electronic scale
4 Gas leak detector ·Use the detector for R134a or R407C.
5 Adapter for reverse flow check. ·Attach on vacuum pump.
6 Refrigerant charge base.
7 Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8 Refrigerant recovery equipment.
3
Page 4
CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Make sure that the inside and outside of refrigerant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
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.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
· For RP100, 125 and 140, be sure to perform replace ment operation before test run.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Cautions for units utilising refrigerant R410A
[1] Cautions for service
(1) Perform service after collecting the refrigerant left in 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.
[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.)
4
Page 5
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Specifications
1 Gauge manifold ·Only for R410A
·Use the existing fitting
·Use high-tension side pressure of 5.3MPa·G or over.
2 Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3 Electronic scale
4 Gas leak detector ·Use the detector for R134a, R407C or R410A.
5 Adaptor for reverse flow check ·Attach on vacuum pump.
6 Refrigerant charge base
7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)
8 Refrigerant recovery equipment
specifications
Cylinder with syphon
. (UNF1/2)
5
Page 6
3
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Set Temperature buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the
door.
ON/OFF button
Fan Speed button
Filter button
(<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
( Operation button)
To preceding operation
number.
Ventilation button
(
Operation button)
To next operation number.
Auto Air Swing Vane
Disperses airflow up and
down and adjusts the angle
of airflow direction.
Grille
Filter
Removes dust and pollutants
from intake air
Horizontal Air Outlet
Sets airflow of horizontal automatically
during cooling or dehumidifying.
Air Intake
Intakes air from room.
PART NAMES AND FUNCTIONS
● Indoor Unit
● Wired remote controller
On the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
● Operation buttons
6
Page 7
● Display
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
˚F˚C
˚F˚C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
Identifies the current operation
Shows the operating mode, etc.
* Multilanguage display is sup-
ported.
“Centrally Controlled” indicator
Indicates that operation of the remote controller has been prohibited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
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, shows the time
remaining.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller buttons have been locked.
“Clean The Filter” indicator
Comes on when it is time to clean the
filter.
Timer indicators
The indicator comes on if the corresponding timer is set.
Up/Down Air Direction indicator
The indicator shows the direction of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to
weak and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow direction also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing
louver. Does not appear if the
louver is stationary.
(Power On indicator)
Indicates that the power is on.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
Caution
● Only the Power on indicator lights when the unit is stopped and power supplied to the unit.
● If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”
message.
If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not
present at the parent unit.
● When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
7
Page 8
ON/OFF TEMP
FAN
VANE
TEST RUN
AUTO STOP
AUTO START
h
min
LOUVER
MODE
CHECK
RESETSET CLOCK
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
VANE CONTROL button
Used to change the air flow direction.
CLOCK button
RESET button
SET button
ON/OFF button
The unit is turned ON and OFF alternately
each time the button is pressed.
LOUVER button
This switch the horizontal fan motion ON
and OFF.
(Not available for this model.)
MODE SELECT button
Used to switch the operation mode between
cooling, drying, blowing, heating and auto
mode.
CHECK-TEST RUN button
Only press this button to perform an inspection check or test operation.
Do not use it for normal operation.
FAN SPEED SELECT button
Used to change the fan speed.
TIMER display
Displays when in timer operation or when
setting timer.
button
SET TEMPERATURE button sets any desired
room temperature.
CLOCK display
Displays the current time.
“ ” “ ” display
Displays the order of timer operation.
“ ” “ ” display
Displays whether timer is on or off.
w In case the outdoor unit is cool only type,
the heating mode is not available.
Buttons used to set the “hour and minute” of
the current time and timer settings.
h and min buttons
display
SET TEMP. display indicates desired temperature set.
display
FAN SPEED display indicates which fan
speed has been selected.
display
The vertical direction of air flow is indicated.
display
Blinks when model is selected.
display
Lights up while transmission to the indoor
unit is mode using switches.
display
CHECK&TEST RUN display indicates that
the unit is being checked or test-run.
display
OPERATION MODE display
Operation mode display indicates which operation mode is in effect.
TIMER CONTROL buttons
AUTO STOP (OFF timer): when this switch
is set, the air conditioner will be automatically stopped at the preset time.
AUTO START (ON timer): when this switch
is set, the air conditioner will be automatically started at the preset time.
MODEL SELECT
CHECK
TEST RUN
● Wireless remote controller
8
Page 9
4
Cooling
0.18
0.92
Heating
0.18
0.92
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Turbo fan (direct) o 1
0.120
19-21-23-27(670-740-810-950)
0(direct blow)
–
Remote controller & built-in
33-36-39-41
32(1-1/4)
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
D
H
INDOOR UNIT
PLA-RP100AA2.UK
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan(drive) o No.
Fan motor output
Airflow(Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Unit drain pipe I.D.
Dimensions
Weight
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 298 (11-3/4) PANEL : 30 (1-3/16)
UNIT : 32 (71) PANEL : 5 (11)
Cooling
0.18
0.92
Heating
0.18
0.92
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Turbo fan (direct) o 1
0.120
24-25-27-30(850-880-950-1,060)
0(direct blow)
–
Remote controller & built-in
37-40-43-45
32(1-1/4)
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
D
H
INDOOR UNIT
PLA-RP125AA2.UK
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan(drive) o No.
Fan motor output
Airflow(Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Unit drain pipe I.D.
Dimensions
Weight
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 298 (11-3/4) PANEL : 30 (1-3/16)
UNIT : 32 (71) PANEL : 5 (11)
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan(drive) x No.
Fan motor output
Airflow(Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Unit drain pipe I.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PLA-RP140AA2.UK
Cooling
0.18
0.92
Heating
0.18
0.92
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Turbo fan (direct) o 1
0.120
24-25-27-30(850-880-950-1,060)
0(direct blow)
–
Remote controller & built-in
37-40-43-45
32(1-1/4)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 298 (11-3/4) PANEL : 30 (1-3/16)
UNIT : 32 (71) PANEL : 5 (11)
SPECIFICATIONS
9
Page 10
5
PLA-RP100AA2.UK
NOTCH SPL(dB) LINE
41
39
36
33
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
High
Medium1
Medium2
Low
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
PLA-RP125AA2.UK
NOTCH SPL(dB) LINE
45
43
40
37
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
High
Medium1
Medium2
Low
UNIT
1.5m
MICROPHONE
CEILING
PLA-RP140AA2.UK
NOTCH SPL(dB) LINE
45
43
40
37
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
High
Medium1
Medium2
Low
NOISE CRITERION CURVES
10
Page 11
6
Models
PLA-RP100,125,140AA2
281A298B84
C
Receiver
Operation lamp
DEFROST/STAND BY lamp
Emergency operation switch (cooling)
A
(WIRELESS PANEL)
Emergency operation switch (heating)
Branch duct hole
(Cut out hole)
{175
{150
14 - {2.8
Burring hole
350
90
70
_
100 100 90
100
130
155
167
Suspension bolt pitch
Ceiling hole
Branch
duct hole
Suspension bolt pitch
Ceiling hole
840
197 159
159
605
159192
98
89
C
840
860 - 91020 - 45 20 - 45
20 - 4520 - 45
Fresh air intake
Branch duct hole
860 - 910
810
159
16
Terminal block
Drain pipe
VP-25connection
(O.D.{32)
Ceiling surface
Power line entry
Suspension bolt lower edge
Suspension bolt M10
or W3/8
Control wire entry
Feeding hole
(Drain pump)
37428660
17
+5
0
30
190
170
140
50 - 70
105
A
B
1
2
High efficiency filter
& Fresh air intake casement (option)
17
+5
0
135
Air outlet hole
Vane motor
Auto vane
Drain hole
Grille
Air outlet hole
Air intake hole
411
Air intake hole
Air intake grille
577
77 51
M
M
M
A
M
950
51 77
950
577
411
Use the current nuts meeting the pipe size of the outdoor unit.
Available pipe size
Factory flare nut attachment to the heat-exchanger.
1
LIQUID SIDE
2 GAS SIDE
—
[9.52
—
[15.88
[19.05
RP100, 125, 140
Detail drawing of fresh air intake
3 - {2.8
Burring hole
{125
Burring hole pitch
{100
(Cut out hole)
Ceiling surface
120
_
120_
158
OUTLINES AND DIMENSIONS
INDOOR UNIT
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
Unit : mm
11
Page 12
7
INDOOR POWER BOARD
[LEGEND]
P.B
INDOOR CONTROLLER BOARDI.B
CN2L CONNECTOR(LOSSNAY)
CN32
CONNECTOR(REMOTE SWITCH)
CN41 CONNECTOR(HA TERMINAL-A)
CN51 CONNECTOR(CENTRALLY CONTROL)
SW1
SWITCH(MODEL SELECTION)wSee table 1
SWITCH(
CAPACITY CODE
)wSee table 2
SW2
SWE
CONNECTOR(EMERGENCY OPERATION)
X1 RELAY(DRAIN PUMP)
LED1 POWER SUPPLY(I.B)
LED2 POWER SUPPLY(I.B)
LED3 TRANSMISSION(INDOOR-OUTDOOR)
FUSE
FUSE(T5AL250V)
ZNR VARISTOR
IPM POWER MODULE
SYMBOL NAME SYMBOL NAME SYMBOL NAME
MF FAN MOTOR
MV VANE MOTOR
DP DRAIN-UP MACHINE
DS DRAIN SENSOR
DCL REACTOR
H2 DEW PREVENTION HEATER
TB2
TERMINAL BLOCK (Indoor unit Power (option))
TB4 TERMINAL BLOCK
(INDOOR/OUTDOOR CONNECTING LINE)
TB5, TB6 TERMINAL BLOCK(REMOTE
CONTROLLER TRANSMISSION LINE)
TH1 ROOM TEMP.THERMISTOR
(0:/15k",25:/5.4k" DETECT)
TH2 PIPE TEMP.THERMISTOR/LIQUID
(0:/15k",25:/5.4k" DETECT)
TH5 COND./EVA. TEMP. THERMISTOR
(0:/15k",25:/5.4k" DETECT)
R.B
WIRED REMOTE CONTROLLER BOARD
W.B
WIRELESS REMOTE CONTROLLER BOARD
RU RECEIVING UNIT
BZ BUZZER
LED1 LED(RUN INDICATOR)
LED2 LED(HOT ADJUST)
SW1 SWITCH(HEATING ON/OFF)
SW2 SWITCH(COOLING ON/OFF)
Please set the voltage using the
remote controller.
For the setting method. please refer to
the indoor unit Installation Manual.
S1
S2
S3
TB4
TO
OUTDOOR
UNIT
YLW
ORN
YLWYLW
ORN
BRN
ORN
1
11
3
1
2
2
5
1
2
3
1
3
5
53
RECTIFIER
TRANS
IPM
P.B
MF
1
2
3
9 5
10
76321 84
5MV5MV5
5
MV5MV
GRILLE
H2
GRILLE
BLK
X1
J41
J42
X1
3121 3
DP
D.U.M
CNP
(BLU)
YLW
YLW
ORN
ORN
YLW
BLK
WHT
PNK
31 331 31
YLW
YLW
D.HEATER
CNC
(RED)
CN33
(GRN)
CN02
(GRN)
CN01
(BLK)
POSITION DETECTION
SENSOR INPUT
CN3
(WHT)
CN03
(BLU)
CN2S
(WHT)
FAN
CN2
(GRN)
CN4
(WHT)
FUSE
ZNR
DCL
FAN
WHT
BRN
POWER
CND
(ORN)
21
POWER
CN2D
(WHT)
INDOOR/OUTDOOR
COMMUNICATION
CN3C
(BLU)
CN41CN51 CN2L
CN32
9
WIRELESS
CN90
(WHT)
BZ
5
5
VANE
CN6V
(GRN)
W.B
I.B
LED2
CNB
LED1
SW1 SW2
RU
21
2
21
1
REMOCON
CN22
(BLU)
TB5
TRANSMISSION WIRES
DC12V
TB6
R.B
BLU
BLU
21 21 21
D.SENSOR
CN31
(WHT)
INTAKE
CN20
(RED)
LIQUID
CN21
(WHT)
DS
TH2
21
PIPE
CN29
(BLK)
TH5
TH1
LED3
Pair No.
LED2 LED1
ON
OFF
SWE
Refer to tables 1
and 2.
wBe sure to turn off the source power
and then disconnect fan motor connector.
(Failure to do so will cause trouble in Fan motor)
SW2 SW1
BLK
WHT
RED
31
INDOOR/OUTDOOR
COMMUNICATION
CN3C
(BLU)
TB4
YLW
ORN
ORN
BRN
TO OUTDOOR UNIT
S1
S2
S3
I.B
P.B
TB2
POWER SUPPLY
~(1PHASE)
230V 50Hz
RED
BLU
GRN/YLW
L
N
3
1
5
CN01
(BLK)
YLW
ORN
w1 (Fig.1)
1 2 3 4 5
ON
OFF
(Table 1) SW1 (MODEL SELECTION)
SW1
Manufacture/Service
(Table 2) SW2 (CAPACITY CORD)
1 2 3 4 5
ON
OFF
MODELS
SW2
Manufacture/Service
PLA-RP100AA2 PLA-RP140AA2
PLA-RP125AA2
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
MODELS
Manufacture/Service
1.Symbols used in wiring diagram above are, : Connector, :
Terminal (block).
2.Indoor and outdoor connecting wires are made with polarities, make wiring
matching terminal numbers (S1,S2,S3).
3.Since the outdoor side electric wiring may change be sure to check the
outdoor unit electric wiring for servicing.
4.This dlagram shows the wiring of indoor and outdoor connecting wires.
(specification of 230V), adopting superimposed system of power and signal.
w1 ; When work to supply power separately to indoor and outdoor unit was
applied, refer to Fig1.
w2 ; For power supply system of this unit, refer to the caution label located
near this diagram.
NOTES:
WIRING DIAGRAM
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
12
Page 13
Thermistor TH2
Pipe temperature(Liquid)
Distributor
with strainer (#50)
Thermistor TH5
(Cond./ Eva.temperature)
Thermistor TH1
(Room temperature)
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer (#50)
Strainer (#50)
Heat exchanger
Refrigerant GAS pipe connection
(Flare)
Refrigerant LIQUID pipe connection
(Flare)
8
REFRIGERANT SYSTEM DIAGRAM
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
13
Page 14
9 TROUBLESHOOTING
Unit conditions at service
Error code
Actions to be taken for service (summary)
The inferior phenomenon is
reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action
according to “SELF-DIAGNOSIS ACTION TABLE” (9-3).
Identify the cause of the inferior phenomenon and take
a corrective action according to “TROUBLESHOOTING
BY INFERIOR PHENOMENA ” (9-4).
The inferior phenomenon is
not reoccurring.
Logged
Not logged
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.
3There is no abnormality in electrical components,
controller boards, and remote controller.
1Recheck the abnormal symptom.
2Identify the cause of the inferior phenomenon and take
a corrective action according to “TROUBLESHOOTING
BY INFERIOR PHENOMENA ” (9-4).
3Continue to operate unit for the time being if the cause
is not ascertained.
4There is no abnormality in electrical components,
controller boards, remote controller etc.
9-1. 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.
14
Page 15
9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESET
SET
CLOCK
CHECK
CHECK
display
Temperature
button
CHECK
button
Refrigerant
address
display
HOUR
button
ON/OFF
button
<In case of trouble during operation>
When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform
unusual stop.
<Malfunction-diagnosis method at maintenance service>
[Procedure]
1. Press the CHECK button twice.
• "CHECK" lights, and refrigerant
address "00" flashes.
• Check that the remote controller's
display has stopped before continuing.
2. Press the temperature
buttons.
3. Point the remote controller at the
sensor on the indoor unit and
press the HOUR button.
4. Point the remote controller at the
sensor on the indoor unit and
press the ON/OFF button.
• Select the refrigerant address of the
indoor unit for the self-diagnosis.
Note: Set refrigerant address using the
outdoor unit’s DIP switch (SW1).
(For more information, see the
outdoor unit installation manual.)
• If an air conditioner error occurs, the
indoor unit's sensor emits an intermittent buzzer sound, the operation light
flashes, and the error code is
output.
(It takes 3 seconds at most for error
code to appear.)
• The check mode is cancelled.
To be continued to the next page.
15
Page 16
[Output pattern A] Errors detected by indoor unit
[Output pattern B]
E9
*1If the beeper does not sound again after the initial
two beeps to confirm the self-check start signal was received and
the OPERATION INDICATOR lamp does not come on,
there are no error records.
*2If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm
the self-check start signal was received, the specified refrigerant address is incorrect.
OPERATION
INDICATOR
lamp flash
pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.On0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.
· · · Repeated
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
Number of flashes/beeps in pattern indicates
the check code in the following table
n
th
1st2nd3
rd
1st2
nd
Self-check
starts
(Start signal
received)
Beeper sounds
[Output pattern B]
OPERATION
INDICATOR
lamp flash
pattern
Beep
Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.On0.5 sec.On0.5 sec.
· · · Repeated
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “P5”)
Number of flashes/beeps in pattern indicates
the check code in the following table
n
th
1st2nd3
rd
1st2
nd
Self-check
starts
(Start signal
received)
Beeper sounds
• Refer to the following tables for details on the check codes.
[Output pattern A]
Beeper sounds/OPERATION
INDICATOR lamp flashes 1 Check code
Symptom Remark
(Number of times)
Wireless remote controller
Wired remote controller
Beeper sounds/OPERATION
INDICATOR lamp flashes 1 Check code
(Number of times)
Wireless remote controller
Wired remote controller
1P1
Intake sensor error
P9 Pipe (TH5) sensor error
2
P2 Pipe (TH2) sensor error
3 E6,E7
Indoor/outdoor unit communication error
4 P4 Drain sensor error
5
P5
PA
Drain pump error
Forced compressor stop
6 P6 Freeing/Overheating safeguard operation
7 EE Communication error between indoor and outdoor units
8 P8 Pipe temperature error
9 E4, E5 Remote controller signal receiving error
10
–
11
–
–
–
Errors detected by unit other than indoor unit (outdoor unit, etc.)
Symptom Remark
1
Indoor/outdoor unit communication error
2
(Transmitting error) (Outdoor unit)
3
Open/short of outdoor unit thermistors
4
Compressor overcurrent interruption (When compressor locked)
5
Abnormal high discharging temperature/49C worked/
insufficient refrigerant
6
Abnormal high pressure (63H worked)/Overheating
safeguard operation
7
Abnormal temperature of heat sink
8
Outdoor unit fan safeguard stop
9
Compressor overcurrent interruption/Abnormal of power module
10
Abnormality of super heat due to low discharge temperature
11
Abnormality such as overvoltage or voltage shortage and
abnormal synchronous signal to main circuit/Current sensor error
12
13
U2
U5
UP
U3,U4
UF
U1,Ud
U8
U6
U7
U9,UH
Others
–
–
–
–
14
Other errors (Refer to the technical manual for the outdoor unit.)
For details, check
the LED display
of the outdoor
controller board.
As for outdoor
unit, refer to
outdoor unit's
service manual.
12 Fb Indoor unit control system error (memory error, etc.)
–
E0, E3
– E1, E2 Remote controller control board error
Remote controller transmission error
Compressor overcurrent interruption
16
Page 17
•
If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
On the wireless remote controller with condition above, following phenomena takes place.
• No signals from the remote controller are accepted.
• OPE lamp is blinking.
• The buzzer makes a short piping sound.
PLEASE WAIT
PLEASE WAIT → Error code
Display messages do not
appear even when operation
switch is turned ON (operation
lamp does not light up).
For about 2
minutes following power-on
After about 2
minutes has
expired following power-on
After LED 1, 2 are lighted, LED 2 is
turned off, then only LED 1 is
Only LED 1 is lighted. →
LED 1, 2 blink.
Only LED 1 is lighted.
→
LED 1 blinks twice,
LED 2 blinks once.
• For about 2 minutes following power-on,operation of the remote controller is not possible
due to system start-up. (Correct operation)
•Connector for the outdoor unit’s protection
device is not con-nected.
•Reverse or open phase wiring for the outdoor
unit’s power terminal block (L1, L2, L3)
•Incorrect wiring between indoor and outdoor
units (incorrect polarity of S1, S2, S3)
•Remote controller wire short
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is
always lit.
LED2 (power for remote controller)
Indicates whether power is supplied to the remote controller.
This LED lights only in the case of the indoor unit which is connected to the
outdoor unit refrigerant address “0”.
LED3 (communication between indoor and
outdoor units)
Indicates state of communication between the indoor and outdoor units.
Make sure that this LED is always blinking.
lighted.
(Correct operation)
• On wireless remote controller
2The continuous buzzer sounds from receiving section of indoor unit.
3Blink of operation lamp
• On wired remote controller
1Check code displayed in the LCD.
17
Page 18
9-3. SELF-DIAGNOSIS ACTION TABLE
Error Code
P1
P2
Meaning of error code and detection method
Abnormality of room temperature
thermistor (TH1)
1 The unit is in three-minute resume
prevention mode if short/open of
thermistor is detected. Abnormal if the
unit does not reset normally after three
minutes. (The unit returns to normal
operation, if it has normally reset.)
2 Constantly detected during cooling,
drying, and heating operation.
Short: 90: or more
Open: -40: or less
Abnormality of pipe temperature
thermistor/Liquid (TH2)
1 The unit is in three-minute resume
prevention mode if short/open of
thermistor is detected. Abnormal if the
unit does not reset normally after three
minutes. (The unit returns to normal
operation, if it has normally reset.)
2 Constantly detected during cooling,
drying, and heating (except defrosting)
operation.
Short: 90: or more
Open: -40: or less
Note: Refer to the manual of outdoor unit for the details of display
such as F, U, and other E.
Cause
1 Defective thermistor
characteristics.
2 Contact failure of connector
(CN20) on the indoor controller
board. (Insert failure)
3 Breaking of wire or contact
failure of thermistor wiring.
4 Defective indoor controller
board.
1 Defective thermistor
characteristics.
2 Contact failure of connector
(CN21) on the indoor controller
board. (Insert failure)
3 Breaking of wire or contact
failure of thermistor wiring.
4 Defective refrigerant circuit is
causing thermistor temperature
of 90: or more or -40: or
less.
5 Defective indoor controller board.
Countermeasure
1–3 Check resistance value of thermistor.
0: ······15.0k"
10: ····9.6k"
20: ····6.3k"
30: ····4.3k"
40: ····3.0k"
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.
2 Check contact failure of connector (CN20) on
the indoor controller board. Refer to 9-7.
Turn the power on again and check restart
after inserting connector again.
4 Check room temperature display on remote
controller.
Replace indoor controller board if there is
abnormal difference with actual room
temperature.
Turn the power off, and on again to operate
after check.
1–3 Check resistance value of thermistor.
For characteristics, refer to (P1) above.
2 Check contact failure of connector (CN21) on
the indoor controller board. Refer to 9-7. Turn
the power on and check restart after inserting
connector again.
4 Check pipe <liquid> temperature with remote
controller in test run mode. If pipe <liquid>
temperature is exclusively low (in cooling
mode) or high (in heating mode), refrigerant
circuit may have defective.
5 Check pipe <liquid> temperature with remote
controller in test run mode. If there is exclusive
difference with actual pipe <liquid> temperature,
replace indoor controller board.
P4
P5
Abnormality of drain sensor (DS)
1 Suspensive abnormality, if short/open of
thermistor is detected for 30 seconds
continuously.
Turn off compressor and indoor fan.
2 Short/open is detected for 30 seconds
continuously during suspensive
abnormality.
(The unit returns to normal operation,
if it has normally reset.)
3 Detect 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
temperature.
• During drain pump operation.
Malfunction of drain pump (DP)
1 Suspensive abnormality, if thermistor
of drain sensor is let heat 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.
3 Constantly detected during drain pump
operation.
1 Defective thermistor
characteristics
2 Contact failure of connector
(CN31) on the indoor controller
board. (Insert failure).
3 Breaking of wire or contact
failure of drain sensor wiring.
4 Defective indoor controller board.
1 Malfunction of drain pump
2 Defective drain
Clogged drain pump
Clogged drain pipe
3 Attached drop of water at the
drain sensor
• Drops of drain trickles from
lead wire.
• Clogged filter is causing
wave of drain.
4 Defective indoor controller board.
Turn the power off, and on again to operate
after check.
1–3 Check resistance value of thermistor.
0: ······6.0k"
10: ····3.9k"
20: ····2.6k"
30: ····1.8k"
40: ····1.3k"
2 Check contact failure of connector (CN31) on
the indoor controller board. Refer to 9-7. Turn
the power on again and check restart after
inserting connector again.
4 Replace indoor controller board if drain
pump operates with the line of drain sensor
connector CN31-1 and 2 is short-circuited,
and abnormality reappears.
Turn the power off, and on again to operate
after check.
1 Check if drain-up machine works.
2 Check drain function.
3 Check the setting of lead wire of drain sensor
and check clogs of the filter.
4 Replace indoor controller board if drain
pump operates with the line of drain sensor
connector CN31-1 and 2 is short-circuited
and abnormality reappears.
Refer to 9-7.
Turn the power off, and on again to operate
after check.
18
Page 19
Error Code
P6
Meaning of error code and detection method
Freezing/overheating protection is
working
1 Freezing protection (Cooling mode)
The unit is in six-minute resume prevention
mode if pipe <liquid or condenser/evaporator> temperature stays under
-15: for three minutes, three minutes
after the compressor started. Abnormal
if it stays under -15: for three minutes
again within 16 minutes after six-minute
resume prevention mode.
<Frost prevention mode>
If pipe <liquid or condenser-evaporator>
temperature is 2: or below when 16
minutes has passed after compressor
starts operating, unit will start operating
in frost prevention mode which stops
compressor operation. After that, when
pipe <liquid or condenser/evaporator>
temperature stays 10: or more for 3
minutes, frost prevention mode will be
released and compressor will restart its
operation.
2 Overheating protection (Heating mode)
The units is in six-minute resume
prevention mode if pipe <condenser /
evaporator> temperature is detected as
over 70: after the compressor started.
Abnormal if the temperature of over
70: is detected again within 10 minutes
after six-minute resume prevention
mode.
(Cooling or drying mode)
1 Clogged filter (reduced airflow)
2 Short cycle of air path
3 Low-load (low temperature)
4 Defective indoor fan motor
• Fan motor is defective.
• Indoor controller board is
• Indoor power board (fan-control
5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit
(Heating mode)
1 Clogged filter (reduced airflow)
2 Short cycle of air path
3 Over-load (high temperature)
4 Defective indoor fan motor
• Fan motor is defective.
• Indoor controller board is
• Indoor power board (fan-control
Cause
operation beyond the tolerance
range
defective.
circuit) is defective.
(clogs)
operation beyond the tolerance
range
defective.
circuit) is defective.
Countermeasure
(Cooling or drying mode)
1 Check clogs of the filter.
2 Remove shields.
4 Refer to 9-4.(5).
5 Check outdoor fan motor.
67 Check operating condition of refrigerant
circuit.
(Heating mode)
1 Check clogs of the filter.
2 Remove shields.
4 Refer to 9-4.(5).
P8
Abnormality of pipe temperature
<Cooling mode>
Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes later of compressor start and 6 minutes later of the liquid or condenser/evaporator pipe is out of cooling range.
Note 1) It takes at least 9 min. to detect.
Note 2) Abnormality P8 is not detected in
drying mode.
Cooling range : -3 deg ] (TH-TH1)
TH: Lower temperature between: liquid
pipe temperature (TH2) and condenser/evaporator temperature (TH5)
TH1: Intake temperature
<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
condenser/evaporator pipe temperature is
not in heating range within 20 minutes.
5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit
(clogs)
8 Bypass circuit of outdoor unit
is defective.
1 Slight temperature difference
between indoor room
temperature and pipe <liquid
or condenser / evaporator>
temperature thermistor
• Shortage of refrigerant
• Disconnected holder of pipe
<liquid or condenser /
evaporator> thermistor
• 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
5 Stop valve is not opened
completely.
5 Check outdoor fan motor.
6~8Check operating condition of refrigerant
circuit.
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.
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.
)
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 [ (TH5-TH1)
19
Page 20
Error Code
P9
E0
or
E4
E3
or
E5
Meaning of error code and detection method
Abnormality of pipe temperature ther-
mistor / Condenser-Evaporator (TH5)
1 The unit is in three-minute resume pro-
tection mode if short/open of thermistor
is detected. Abnormal if the unit does
not get back to normal within three minutes. (The unit returns to normal operation, if it has normally reset.)
2 Constantly detected during cooling, dry-
ing, and heating operation (except
defrosting)
Short: 90: or more
Open: -40: or less
Remote controller transmission
error(E0)/signal receiving error(E4)
1 Abnormal if main or sub remote con-
troller can not receive normally any
transmission from indoor unit of refrigerant address “0” for three minutes.
(Error code : E0)
2 Abnormal if sub remote controller could
not receive for any signal for two minutes. (Error code: E0)
1 Abnormal if indoor controller board can
not receive normally any data from
remote controller board or from other
indoor controller board for three minutes.
(Error code: E4)
2 Indoor controller board cannot receive
any signal from remote controller for two
minutes. (Error code: E4)
Remote controller transmission
error(E3)/signal receiving error(E5)
1 Abnormal if remote controller could not
find blank of transmission path for six
seconds and could not transmit.
(Error code: E3)
2 Remote 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)
1 Abnormal if indoor controller board could
not find blank of transmission path.
(Error code: E5)
2 Indoor 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)
1 Defective thermistor
2 Contact failure of connector
3 Breaking of wire or contact
4 Temperature of thermistor is
5 Defective indoor controller
1 Contact failure at transmission
2 All remote controllers are set
3 Mis-wiring of remote controller.
4 Defective transmitting receiving
5 Defective transmitting receiving
6 Noise has entered into the
1 Two remote controller are set
2 Remote controller is connected
3 Repetition of refrigerant
4 Defective transmitting receiving
5 Defective transmitting receiving
6 Noise has entered into trans-
Cause
characteristics
(CN29) on the indoor controller
board. (Insert failure)
failure of thermistor wiring.
90: or more or -40: or less
caused by defective refrigerant
circuit.
board.
wire of remote controller
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.
circuit of remote controller
circuit of indoor controller board
of refrigerant address “0”.
transmission wire of remote
controller.
as “main.”
(In case of 2 remote con-
trollers)
with two indoor units or more.
address.
circuit of remote controller.
circuit of indoor controller
board.
mission wire of remote con-
troller.
Countermeasure
1–3 Check resistance value of thermistor.
For characteristics, refer to (P1) above.
2 Check contact failure of connector (CN29)
on the indoor controller board.
Refer to 9-7.
Turn the power on and check restart after
inserting connector again.
4 Operate in test run mode and check pipe
<condenser / evaporator> temperature with
outdoor controller circuit board. If pipe
<condenser / evaporator> temperature is
exclusively low (in cooling mode) or high (in
heating mode), refrigerant circuit may have
defective.
5 Operate 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.
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).
1 Check disconnection or looseness of indoor
unit or transmission wire of remote controller.
2 Set one of the remote controllers “main”.
If there is no problem with the action above.
3 Check wiring of remote controller.
• Total wiring length: max.500m
(Do not use cablex 3 or more)
• The number of connecting indoor units:
max.16units
• The number of connecting remote con-
troller: max.2units
When it is not the above-mentioned problem of
1~3
4 Diagnose remote controllers.
a) When “RC OK” is displayed,
Remote controllers have no problem.
Put 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.
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,
indoor controller board of address “0”
may be abnormal.
1 Set a remote controller to main, and the
other to sub.
2 Remote controller is connected with only one
indoor unit.
3 The address changes to a separate setting.
4~6 Diagnose remote controller.
a) When “RC OK”is displayed, remote con-
trollers have no problem.
Put 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.
c)When “RC E3”or “ERC 00-66”is displayed,
noise may be causing abnormality.
)
20
Page 21
Error Code
E6
E7
Fb
E1
or
E2
PA
(2502)
(2500)
Meaning of error code and detection method
Indoor/outdoor unit communication
error (Signal receiving error)
1 Abnormal if indoor controller board
cannot receive any signal normally for
six minutes after putting the power on.
2 Abnormal if indoor controller board
cannot receive any signal normally for
three minutes.
3 Consider the unit abnormal under the
following condition: When two or more
indoor units are connected to one
outdoor unit, indoor controller board
cannot receive a signal for three minutes
from outdoor controller circuit board, a
signal which allows outdoor controller
circuit board to transmit signals.
Indoor/outdoor unit communication
error (Transmitting error)
Abnormal if “1” receiving is detected 30
times continuously though indoor controller
board has transmitted “0”.
Abnormality of indoor controller board
Abnormal if data cannot be normally read
from the nonvolatile memory of the indoor
controller board.
Abnormality of remote controller control board
1 Abnormal if data cannot be normally
read from the nonvolatile memory of the
remote controller control board.
(Error code: E1)
2 Abnormal if the clock function of remote
controller cannot be normally operated.
(Error code: E2)
Forced compressor stop
(due to water leakage abnormality)
1 When the intake temperature subtracted
with liquid pipe temperature is less than
-10:, drain sensor is detected whether
it is soaked in the water or not at the interval
of 90 seconds. (Drain pump will start operating
when the drain sensor is detected to be
soaked in the water.)
2 The 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 is detected to be
soaked in the water 10 times in a row.
b) The intake temperature subtracted with
liquid pipe temperature is detected to be
less than -10: for a total of 30 minutes.
(When the drain sensor is detected to
be NOT soaked in the water, the detection
record of a and b will be cleared.)
3 The 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)
*Once the water leakage abnormality is
detected, abnormality state will not be
released until the main power is reset.
1 Contact failure, short circuit or,
2 Defective transmitting receiving
3 Defective transmitting receiving
4 Noise has entered into indoor/
1 Defective transmitting receiving
2 Noise has entered into power
3 Noise has entered into outdoor
1 Defective indoor controller
1 Defective remote controller. 1 Replace remote controller.
1) Drain pump trouble
2) Drain defective
3) Open circuit of drain sensor
4) Contact failure of drain sensor
5) Dew condensation on drain
6) Extension piping connection
7) Mis-wiring of indoor/ outdoor
8) Room temperature thermistor /
Cause
mis-wiring (converse wiring) of
indoor/outdoor unit connecting
wire
circuit of indoor controller board
circuit of indoor controller board
outdoor unit connecting wire.
circuit of indoor controller board
supply.
control wire.
board.
· Drain pump clogging
· Drain pipe clogging
side heater
connector
sensor
· Drain water descends along
lead wire.
· Drain water waving due to filter
clogging.
difference at twin, triple,
quadruple system.
connecting at twin, triple,
quadruple system.
liquid pipe temperature thermistor detection is defective.
Countermeasure
∗ 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.
1 Check disconnection or looseness of indoor/
outdoor unit connecting wire of indoor unit or
outdoor unit.
Check all the units in case of twin triple
indoor unit system.
2-4 Turn the power off, and on again to
check. If abnormality generates again,
replace indoor controller board or outdoor
controller circuit board.
∗ Other indoor controller board may have
defective in case of twin triple indoor unit
system.
1-3 Turn the power off, and on again to
check. If abnormality generates again,
replace indoor controller board.
1 Replace indoor controller board.
Check the drain pump.
Performance
Please confirm whether water can be drained.
Confirm the resistance of the drain sensor side
heater.
Check the connector contact failure.
1 Check the drain sensor leadwire mounted.
2 Check the filter clogging
Check the piping connection.
Check the indoor/ outdoor connecting wires.
Check the room temperature display of remote
controller.
Check the indoor liquid pipe temperature display of outdoor controller board.
21
Page 22
9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA
Note: Refer to the manual of outdoor unit for the detail of remote
controller.
Phenomena
(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-
door unit.
2 Defective outdoor controller circuit board.
3 Power supply of 220~240V is not supplied to indoor
unit.
4 Defective indoor power board.
5 Defective indoor controller board.
Cause
Countermeasure
1 Check the voltage of outdoor power
supply terminal block (L, N) or (L
• When AC 220~240V is not detected.
Check the power wiring to outdoor unit
and the breaker.
• When AC 220~240V is detected.
—Check 2 (below).
2 Check the voltage between outdoor
terminal block S1 and S2.
• When AC 220~240V is not detected.
Check the fuse on outdoor controller
circuit board.
Check the wiring connection.
• When AC 220~240V is detected.
—Check 3 (below).
3 Check the voltage between indoor terminal
block S1 and S2.
• When AC 220~240V is not detected.
Check indoor/outdoor unit connecting
wire for mis-wiring.
• When AC 220~240V is detected.
—Check 4 (below).
4 Check voltage output from CN2S on indoor
power board (DC14V). Refer to 9-7-1.
• When no voltage is output.
Check the wiring connection.
• When output voltage is between
DC12.6V and DC16V.
—Check 5 (below).
5 Check the wiring connection between
indoor controller board and indoor power
board. If no problems are found, indoor
controller board is defective.
3, N).
(For the separate indoor/outdoor unit power sup-
ply system)
1 Power supply of 220~240V AC is not supplied to
indoor unit.
2 The connectors of the optional replacement kit are
not used.
3 Defective indoor power board.
4 Defective indoor controller board.
1 Check the voltage of indoor power supply
terminal block (L,N).
• When AC220~240V is not detected.
Check the power supply wiring.
• When AC220~240V 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 refer-
ring to installation manual of an optional
kit.
• When there is no problem in the
method of connecting the connectors.
-Check 3 (below).
3 Check voltage output from CN2S on indoor
power board (DC14V). Refer to 9-7-1.
• When no voltage is output.
Check the wiring connection.
Check the fuse on indoor power board.
• When output voltage is between
DC12.6V and DC16V.
—Check 5 (below).
4 Check the wiring connection between
indoor controller board and indoor power
board. If no problems are found, indoor
controller board is defective.
• 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”.)
22
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.
Page 23
Phenomena
(2)LED2 on indoor controller board
is blinking.
Note: Refer to the manual of outdoor unit for the detail of remote
controller.
Cause
• When LED1 on indoor controller board is also blinking.
Connection failure of indoor/outdoor unit connecting
wire
• When LED1 is lit.
1 Mis-wiring of remote controller wires
Under twin triple indoor unit system, 2 or more indoor
units are wired together.
2 Refrigerant address for outdoor unit is wrong or not
set.
Under grouping control system, there are some units
whose refrigerant address is 0.
3 Short-cut of remote controller wires
4 Defective remote controller
Countermeasure
Check indoor/outdoor unit connecting wire
for connection failure.
1 Check the connection of remote con-
troller wires in case of twin triple indoor
unit system. When 2 or more indoor units
are wired in one refrigerant system,
connect remote controller wires to one of
those units.
2 Check the setting of refrigerant address
in case of grouping control system.
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.
34 Remove remote controller wires and
check LED2 on indoor controller board.
• When LED2 is blinking, check the
short-cut 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
(4)Receiver for wireless remote
controller
(5)Defective operation of fan
(The fan doesn’t turn.)
To be continued to the next page.
1 The 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.
• Defective vane motor
• Breaking of wire or connection failure of connector
• Up/down vane setting is “No vanes”.
3 Upward/downward vane does not work.
• The vane is set to fixed position.
1 Weak batteries of 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.
1 Defective fan motor.
(Fan motor’s winding is short or open.)
2 Defective fan motor.
(Fan motor position sensor signal is not output.)
3 Defective indoor power board.
(fan-control circuit).
4 Defective indoor controller board.
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 connection failure of connector.
• Check “Up/down vane setting”. (Unit
function selection by remote controller).
3 Normal operation (Each connector on
vane motor side is disconnected.)
1 Replace batteries of wireless remote con-
troller.
2~4
Check contact failure of each connector.
If no problems are found of connector,
replace indoor controller board.
When the same trouble occurs even if
indoor controller board is replaced,
replace wireless remote controller
board.
1 Check the resistance of fan motor’s wind-
ing.
Refer to 9-6.
2 Turn around the fan motor more than one
revolution slowly, and check the voltage
of connector CN3.
(CN3:Refer to 9-7-1.)
Between pin1 and 5 or 2 and 5 or 3
and 5:
•0V DC ➜ 5V DC ➜ 0V DC
(The output voltage changes.)
➜ Normal
•0V DC or 5V DC
(The output voltage doesn’t change.)
➜ NG
Replace the fan motor.
3 When the motor is normal
(Check 1 and 2),
replace the indoor power board.
4 When 3 is OK, replace the indoor con-
troller board.
23
Page 24
Role of each component when motor is driven.
CN4
CN3
CN2
Indoor/outdoor connecting line
220-240V AC
Indoor power
board. (fancontrol circuit)
Indoor controller
board.
Position
sensor circuit
Fan drive speed instruction
Serial signal
5V DC 300bps
Fan rotational speed data
Abnormal signal
Serial signal
5V DC 300bps
Rotational speed detection
signal (hall element)
5V DC pulse
PWM output
3 phase AC (voltage and
frequency are changeable.)
Fan motor
DC brushless
24
Page 25
9-5. EMERGENCY OPERATION
Receiver
Operation lamp
Emergency operation switch (cooling)
Emergency operation switch (heating)
Mode
Cooling
Heating
Set temperature
Fan speed
Airflow direction
24:
High
Downward (70deg)
24:
High
Horizontal (30deg)
wEmergency operation will be performed as follows.
9-5-1. When wireless remote controller troubles or its battery is exhausted
1. Emergency operation is available in such a case using emergency operation switch equipped next to the receiver of indoor
unit.
2. To start operation
• Cooling Operation·······Press (Cooling) switch.
• Heating Operation·······Press (Heating) switch.
wWhen the unit starts operating, the operation lamp is lit.
3. To stop operation
• Press either emergency operation switch (cooling/heating).
9-5-2. When wired remote controller or indoor unit micro computer troubles
1. If there is not any other wrong when trouble occurs, emergency operation starts as the indoor controller board switch (SWE)
is set to ON.
During the emergency operation the indoor unit is as follows;
(1) Indoor fan high speed operation (2) Drain pump operation
2. When emergency operating for COOL or HEAT, setting of the switch (SWE) in the indoor controller board and outdoor unit
emergency operation are necessary.
3. Check items and notices as the emergency operation
(1) Emergency operation cannot be used as follows;
• When the outdoor unit is something wrong.
• When the indoor fan is something wrong.
• When drain over flow protected operation is detected during self-diagnosis. (Error code : P5)
(2) Emergency operation will be serial operation by the power supply ON/OFF.
ON/OFF or temperature, etc. adjustment is not operated by the remote controller.
(3) Do not operate for a long time as cold air is blown when the outdoor unit starts defrosting operation during heat emer-
gency operation.
(4) Cool emergency operation must be within 10 hours. Other wise, heat exchanger of indoor unit may get frosted.
(5) After completing the emergency operation, return the switch setting, etc. in former state.
(6) Since vane does not work at emergency operation, position the vane slowly by hand.
25
Page 26
9-6. HOW TO CHECK THE PARTS
Parts name Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10:~30:)
Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
Measure the resistance between the terminals using a tester.
Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature 0:~60:)
Drain pump(DP)
Drain sensor(DS)
(Refer to the thermistor)
(Refer to the thermistor)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor/liquid(TH2)
Condenser/Evaporator
temperature thermistor
(TH5)
1
3
YLW
YLW
1
2
3
Normal
4.3k"~9.6k"
Abnormal
Open or short
Abnormal
Open or short
Normal
0.6k"~6.0k"
Normal Abnormal
290" Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature20:~30:)
Vane motor(MV)
Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
Fan motor(MF)
5
3
3
2
1
1
Red
White
Black
Abnormal
Open or short
Black
White
Red
Motor terminal
Normal
42.7"
Abnormal
Open or short
Red - Yellow
Red - Blue
Red - Orange
Red - White
Connector
Normal
300"
5
2
1
4
3
Yellow
Blue
Red
Orange
White
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
26
Page 27
<Thermistor Characteristic graph>
-200 20406080
< Thermistor for drain sensor >
Temperature (:)
0
1
2
3
4
5
6
7
8
9
10
Resistance (K")
Thermistor for
lower temperature
Room temperature thermistor(TH1)
Pipe temperature thermistor/liquid(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R0=15k' ±3%
Fixed number of B=3480 ± 2%
Rt=15exp { 3480( ) }
1
273+t
1
273
0: 15k'
10: 9.6k'
20: 6.3k'
25: 5.4k'
30: 4.3k'
40: 3.0k'
Thermistor for
drain sensor
< Thermistor for lower temperature >
50
40
30
20
Resistance (K")
10
0
-20 -10 0 10 20 30 40 50
Temperature (:)
Thermistor R0=6.0k' ±5%
Fixed number of B=3390 ±2%
Rt= 6 exp { 3390( ) }
0: 6.0k'
10: 3.9k'
20: 2.6k'
25: 2.2k'
30: 1.8k'
40: 1.3k'
60: 0.6k'
1
273+t
1
273
27
Page 28
9-7.TEST POINT DIAGRAM
9-7-1. Power board
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
CN2S
Connect to the
indoor controller
board (CN2D)
14V DC
CN01
Connect to the
Terminal Block
(TB4)
(Indoor/outdoor
connecting line)
Between 3 and 5
220-240V AC
CN2
Connect to the indoor controller
board (CN33)
(Serial signal I/O)
Between 1 and 2
Between 1 and 3
Fuse 5A / 250V
5V DC pulse
}
CN3
Sensor input for detecting
position of motor
Between 1 and 5
Between 2 and 5
Between 3 and 5
5V DC pulse
}
CN4
Connect to
the fan
motor
CN03
Connect to the indoor
controller board (CN03)
Between 3 and 5
220-240V AC
28
Page 29
9-7-2. Indoor Controller board
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
CN2D
Connect to the indoor power
board (CN2S)
(12.6~15.4V DC)
CN3C
Transmission
(Indoor/outdoor)
(0~24V DC)
CND
Power supply
input
(Connect to the
indoor power
board)
(220-240V AC)
LED1
Power supply
(I.B)
LED3
Transmission
(Indoor/outdoor)
LED2
Power supply
(R.B)
CN22
Connect to the terminal
block (TB5)
(Remote controller connecting wire)
(10.4~14.6V DC)
CN20
Room temperature thermistor (TH1)
CN21
Pipe temperature thermistor/Liquid (TH2)
CN29
Condenser/evaporator
temperature thermistor
(TH5)
CN31
Drain sensor (DS)
CN90
Connect to the wireless
remote controller board
(CNB)
CNP
Drain-pump output (DP)
(220-240V AC)
CNC
Dew prevention
heater output
(H2)
(220-240V AC)
CN6V
Vane motor output (MV)
CN41
Connector
(HA terminal-A)
CN51
Centrally control
CN2L
Connector (LOSSNAY)
CN33
Connect to the indoor power
board (CN2)
(Serial signal I/O)
SWE
Emergency operation
29
SW2
Capacity setting
SW1
Model selection
Page 30
SW1
Setting by the dip switch and jumper wire
Functions
Jumper wire
Model
settings
Capacity
settings
Pair number
setting with
wireless
remote
controller
Remarks
SW2
J41
J42
Unit type
setting
JP1
Indoor
controller
board type
setting
JP3
0
1
2
3 ~ 9
Wireless remote
controller setting
Control PCB setting
J41 J42
<Settings at time of factory shipment>
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 line is disconnected.)
There is no jumper (JP1) because these models
have the cond./eva. temperature thermistor (TH5).
(Marks in the table below) Jumper wire ( : Short : Open)
Without TH5
With TH5
Model
JP1
Factory shipment
Service parts
Indoor controller board type
JP3
1 2 3 4 5
ON
OFF
MODELS
Manufacture/Service
PLA-RP. AA2
MODELS
Manufacture/Service
PLA-RP100AA2
PLA-RP125AA2
PLA-RP140AA2
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
9-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE
Each function is controlled by the dip switch and the jumper wire on control p.c. board.
30
Page 31
DISASSEMBLY PROCEDURE10
PLA-RP100AA2.UK PLA-RP125AA2.UK PLA-RP140AA2.UK
OPERATING PROCEDURE
1. Removing the air intake grille
(1) Slide the knob of air intake grille toward the arrow 1 to
open the air intake grille.
(2) Remove drop prevention hook from the panel.
(3) Slide the shaft in the hinge to the direction of the arrow 2
and remove the air intake grille.
2. Removing the fan guard
(1) Open the air intake grille.
(2) Remove the 3 screws of fan guard.
Air intake grille
Air intake grille knob
Fan guard
PHOTOS & ILLUSTRATIONS
Figure 1
Photo 1
Be careful on removing
heavy parts.
Grille
Screws
3. Removing the room temperature thermistor
(1) Remove the fan guard.(See photo 1)
(2) Remove the screw in the room temperature thermistor
holder to remove the holder and the room temperature
thermistor.
(3) Remove the 1 screw from the bell mouth, and unscrew the
other 2 screws (fix to the oval hole which has a different
diameter) to remove the bell mouth.
(4) Remove the holder claw, and remove the room tempera-
ture thermistor and holder.
(5) Disconnect the connector (Red) from the indoor controller
board.
4. Removing the electrical box
(1) Remove the fan guard. (See photo 1)
(2) Remove the lead wire of the vane motor from the clamp,
and disconnect the white connector (10P).
(3) Remove the room temperature thermistor with the holder.
(4) Remove the bell mouth.(See photo 1)
(5) Disconnect the relay connector in the electrical box.
White (3P)(CN4)/white (5P)(CN3)for fan motor
White (2P) for pipe temperature detecting thermistor
Black (2P) for condenser/evaporator pipe temperature
detecting thermistor
Blue (2P) for drain pump
White (3P) for drain sensor
(6) Remove the 3 screws of the electrical box and loosen the
other 2 screws to remove the box.
<Electrical parts in the electrical box>
Indoor controller board
Power supply board
Terminal block (TB4)(TB5)
Photo 2
Bell mouth
Photo 3
Electrical box
Power supply
board
Turbo fan
Air intake
grille
Screws
Room
temperature
thermistor
Air intake grille
Nut
Terminal
block
Indoor
controller
board
31
Page 32
OPERATING PROCEDURE
PHOTOS & ILLUSTRATIONS
5 Removing the fan motor
(1) Remove the fan guard.(See photo 1)
(2) Remove the bell mouth.(See photo 1)
(3) Remove the electrical box.(See photo 2)
(4) Remove the turbo fan nut.
(5) Pull out the turbo fan.
(6) Disconnect the connector of the fan motor lead wire.
(7) Remove the 3 nuts of the fan motor.
6. Removing the pipe temperature thermistor
and condenser evaporator temperature thermistor
(1) Remove the fan guard.(See photo 1)
(2) Remove the bell mouth.(See photo 2)
(3) Remove the electrical box.(See photo 3)
(4) Remove the turbo fan.
(5) Remove the screw of the service panel.
(6) Remove the service panel.
(7) Remove the pipe temperature thermistor which is inserted
into the holder installed to the thin copper pipe.
(8) Disconnect the 2-pin white connector.(CN21)
[Condenser/ evaporator temperature thermistor]
(9) Remove the drain pan. (See Photo 7)
(10) Remove the thermistor which is installed into the holder
installed to the indoor coil.
(11) Disconnect the 2-pin black connector. (CN29)
Photo 4
Fan motor
Nut
Photo 5
Connector
Pipe temperature thermistor
Service access
Nut
7. Removing the panel
(1) Remove the air intake grille.(See figure 1)
Corner panel (See figure 2)
(1) Remove the corner screw.
(2) Slide the corner panel to the direction of the arrow 3, and
remove the corner panel.
Panel (See photo 6)
(1) Disconnect the connector that connects with the unit.
(2) Remove the 2 screws from the panel and loosen another 2
screws, which fix to the oval holes, have different diameters.
(3) Rotate the panel a little to remove the panel.
8. Removing the drain pan
(1) Remove the panel. (See photo 6)
(2) Remove the drain plug (Larger one), drain the remaining
water in the drain pan.
(3) Remove the corner cover. (2 screws)
(4) Remove the bell mouth. (See photo 2)
(5) Remove the electrical box. (See photo 3)
(6) Remove the lead wire holder. (1 screw)
(7) Remove the 4 screws and pull out the drain pan.
w Pull out the left and right of the pan gradually.
Be careful not to crack or damage the pan.
Figure 2
Corner
panel
Photo 6
Connector
Screws
Photo 7
Screw
Drain pan
Screw
Screw
Corner
panel
Panel
Screws
Panel
Screw
Screw
32
Lead
wire
holder
Drain plug(Larger)
Corner cover
Page 33
OPERATING PROCEDURE
PHOTOS & ILLUSTRATIONS
9. Removing the drain pump and drain sensor
(1) Remove the panel. (See photo 6)
(2) Remove the fan guard. (See photo 1)
(3) Remove the bell mouth. (See photo 2)
(4) Remove the electrical box. (See photo 3)
(5) Cut the drain hose band with scissors and pull out the
drain hose from the drain pump.
(6) loosen the screw(2 screws) and remove the screw B
(1 screw).Slide the drain pump in the direction of the
arrow C and remove it.
(7) Remove the drain sensor with its holder from the drain
pump.
10. Removing the heat exchanger
(1) Remove the panel. (See photo 6)
(2) Remove the fan guard. (See photo 1)
(3) Remove the bell mouth. (See photo 2)
(4) Remove the electrical box. (See photo 3)
(5) Remove the drain pan. (See photo 7)
(6) Remove the turbo fan. (See photo 4)
(7) Remove the 3 screws of the piping cover, and pull out
piping cover.
(8) Remove the 4 screws of the outer wall cover, and pull out
the outer wall cover.
(9) Remove the screw of the coil support.
(10) Remove the 2 screws of the coil.
(11) Pull out the heat exchanger.
Photo 8
Screw A
Drain hose
Photo 9
Heat exchanger
Coil
support
Fixing band
Coil support
Drain sensor
C
Screw B
Drain pump
Coil screws
Coil
support
Photo 10
Screw
Outer wall cover
Piping cover
Screws of
piping cover
33
Page 34
11 PARTS LIST (non-RoHS compliant)
No. Parts No.
Parts Name
Specifi-
cation
Q'ty / set
WIRELESS
WIRED
Remarks
(Drawing
No.)
Wiring
Diagram
Symbol
Recommended
Q'ty
Unit Amount
Price
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
AIR OUTLET GRILLE
VANE ASSY
CORNER PANEL
CORNER PANEL
L.L FILTER-A
GRILLE ASSY
RECEIVER
WIRELESS ADAPTER
STEPPING MOTOR
VANE BUSH
GEAR (VANE)
GEAR
REMOTE CONTROLLER ASSY
WIRELESS REMOTE CONTROLLER ASSY
CORD
1
4
1
3
1
1
4
8
4
4
1
1
1
4
2
2
1
1
1
1
4
8
4
4
1
RU
W.B
MV
R.B
PAR-21MAA-E
PAR-SL97A-E
S70 E10 003
S70 E01 002
S70 E01 638
S70 E00 638
S70 E00 500
S70 E00 691
S70 24K 658
S70 E00 317
S70 E00 223
S70 E00 063
S70 E00 040
S70 E01 040
S70 KW1 713
S70 E15 714
S70 58A 246
PLA-RP100•125•140AA2.UK
ON/OFF TEMP
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
ON/OFF
TEMP.
PANEL PARTS
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
2
3
1
GEAR
12
GEAR
(VANE)
11
VANE
BUSH
10
9
STEPPING
MOTOR
8
13
14
4
5
6
15
34
7
RECEIVER
Page 35
FUNCTIONAL PARTS
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
1
15
14 13
12
SPL WASHER
2
2
3
4
11
5
6
10
CONDENSER
7
FLARE NUT
8
EVAPORATOR
TEMPERATURE
THERMISTOR
9
PIPE TEMPERATURE
THERMISTOR
No.
Parts No.
S70 K01 687
1
S70 E01 130
2
S70 007 688
3
S70 E00 130
4
S70 E01 114
5
S70 08K 097
6
S70 K19 480
7
S70 E16 097
8
S70 17J 202
9
S70 E20 202
10
S70 E02 659
11
S70 E02 130
12
S70 K10 762
13
S70 K10 105
14
S70 008 688
15
Q'ty / set
Parts Name
BASE
LEG
DRUM 1 ASSY
LEG
TURBO FAN
SPL WASHER
HEAT EXCHANGER
FLARE NUT
PIPE TEMPERATURE THERMISTOR
CONDENSER EVAPORATOR TEMPERATURE THERMISTOR
INNER COVER
LEG
FAN MOTOR
MOTOR MOUNT
DRUM 2 ASSY
Specifi-
cation
3/4"
EHD01A120MS
PLA-RP•AA2.UK
100 125,140
1
2
1
1
1
1
1
1
1
1
1
1
1
3
1
1
2
1
1
1
1
1
1
1
1
1
1
1
3
1
Remarks
(Drawing
No.)
Wiring
Diagram
Symbol
TH2
TH5
MF
Recommended
Q'ty
Price
Unit Amount
35
Page 36
No. Parts No. Parts Name
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Unit Amount
Price
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
DRAIN PAN
DRAIN SOCKET
DRAIN PUMP
DRAIN SENSOR
DRAIN SENSOR HOLDER
ELECTRICAL CONTROL BOX
POWER BOARD
INDOOR CONTROLLER BOARD
CONTROL COVER ASSY
FAN GUARD
ROOM TEMPERATURE THERMISTOR
TERMINAL BLOCK
TERMINAL BLOCK
CORNER COVER
DRAIN PLUG
DRAIN PLUG
DRAIN HOSE ASSY
REACTOR(NOISE FILTER)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DP
DS
P.B
I.B
TH1
TB5
TB4
DCL
2P (1, 2)
3P (S1, S2, S3)
S70 E01 529
S70 29H 523
S70 E02 355
S70 E00 266
S70 31K 241
S70 K00 501
S70 K10 313
S70 K50 310
S70 K03 503
S70 E10 675
S70 E00 202
S70 512 716
S70 K01 716
S70 001 663
S70 A41 524
S70 A48 524
S70 A41 523
S70 K00 529
Q'ty / set
PLA-RP100•125•140AA2.UK
Specification
Remarks
(Drawing No.)
FUNCTIONAL PARTS
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
1
2
3
4
5
6
7
8
9
Part numbers that are circled are not shown in the figure.
16
DRAIN PLUG
DRAIN PLUG
15
14
TERMINAL BLOCK
13
TERMINAL BLOCK
12
ROOM
11
TEMPERATURE
THERMISTOR
10
36
Page 37
12 RoHS PARTS LIST
No. Parts No.
RoHS
Parts Name
Specifi-
cation
Q'ty / set
WIRELESS
WIRED
Remarks
(Drawing
No.)
Wiring
Diagram
Symbol
Recommended
Q'ty
Unit Amount
Price
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
AIR OUTLET GRILLE
VANE ASSY
CORNER PANEL
CORNER PANEL
L.L FILTER-A
GRILLE ASSY
RECEIVER
WIRELESS ADAPTER
STEPPING MOTOR
VANE BUSH
GEAR (VANE)
GEAR
REMOTE CONTROLLER ASSY
WIRELESS REMOTE CONTROLLER ASSY
CORD
1
4
1
3
1
1
4
8
4
4
1
1
1
4
2
2
1
1
1
1
4
8
4
4
1
RU
W.B
MV
R.B
PAR-21MAA-E
PAR-SL97A-E
S70 E10 003
S70 E01 002
S70 E01 638
S70 E00 638
S70 E00 500
S70 E00 691
S70 24K 658
S70 E00 317
S70 E00 223
S70 E00 063
S70 E00 040
S70 E01 040
S70 KW1 713
S70 E15 714
S70 58A 246
PLA-RP100•125•140AA2.UK
ON/OFF TEMP
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
ON/OFF
TEMP.
PANEL PARTS
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
1
GEAR
12
GEAR
(VANE)
11
VANE
2
BUSH
10
9
STEPPING
MOTOR
3
8
13
14
15
37
4
5
6
7
RECEIVER
Page 38
FUNCTIONAL PARTS
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
1
15
14 13
12
SPL WASHER
2
2
3
4
11
5
6
10
CONDENSER
7
FLARE NUT
8
EVAPORATOR
TEMPERATURE
THERMISTOR
9
PIPE TEMPERATURE
THERMISTOR
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
RoHS
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
Parts No.
S70 K01 687
S70 E01 130
S70 007 688
S70 E00 130
S70 E01 114G
S70 08K 097
S70 K19 480
S70 E16 097
S70 17J 202
S70 E20 202
S70 E02 659
S70 E02 130
S70 K10 762
S70 K10 105
S70 008 688
Q'ty / set
Parts Name
BASE
LEG
DRUM 1 ASSY
LEG
TURBO FAN
SPL WASHER
HEAT EXCHANGER
FLARE NUT
PIPE TEMPERATURE THERMISTOR
CONDENSER EVAPORATOR TEMPERATURE THERMISTOR
INNER COVER
LEG
FAN MOTOR
MOTOR MOUNT
DRUM 2 ASSY
Specifi-
cation
3/4"
EHD01A120MS
PLA-RP•AA2.UK
100 125,140
1
2
1
1
1
1
1
1
1
1
1
1
1
3
1
1
2
1
1
1
1
1
1
1
1
1
1
1
3
1
Remarks
(Drawing
No.)
Wiring
Diagram
Symbol
TH2
TH5
MF
Recommended
Q'ty
Price
Unit Amount
38
Page 39
No. Parts No.
RoHS
Parts Name
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Unit
Amount
Price
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
DRAIN PAN
DRAIN SOCKET
DRAIN PUMP
DRAIN SENSOR
DRAIN SENSOR HOLDER
ELECTRICAL CONTROL BOX
POWER BOARD
INDOOR CONTROLLER BOARD
CONTROL COVER ASSY
FAN GUARD
ROOM TEMPERATURE THERMISTOR
TERMINAL BLOCK
TERMINAL BLOCK
CORNER COVER
DRAIN PLUG
DRAIN PLUG
DRAIN HOSE ASSY
REACTOR(NOISE FILTER)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DP
DS
P.B
I.B
TH1
TB5
TB4
DCL
2P (1, 2)
3P (S1, S2, S3)
S70 E01 529
S70 29H 523
S70 E02 355
S70 E00 266
S70 31K 241
S70 K00 501
S70 K10 313
S70 K50 310
S70 K03 503
S70 E10 675G
S70 E00 202
S70 512 716
S70 K01 716
S70 001 663
S70 A41 524
S70 A48 524
S70 A41 523
S70 K00 529
Q'ty / set
PLA-RP100·125·140
AA2.UK
Specification
Remarks
(Drawing No.)
FUNCTIONAL PARTS
PLA-RP100AA2.UK
PLA-RP125AA2.UK
PLA-RP140AA2.UK
1
2
3
4
5
6
7
8
9
Part numbers that are circled are not shown in the figure.
16
DRAIN PLUG
DRAIN PLUG
15
14
TERMINAL BLOCK
13
TERMINAL BLOCK
12
ROOM
11
TEMPERATURE
THERMISTOR
10
39
Page 40
TM
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Jul. 2006 No.OC357 REVISED EDITION-A PDF 7
Distributed in Jan. 2006 No.OC357 PDF 8
Made in Japan.
New publication, effective Jul. 2006.
Specifications subject to change without notice.
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