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Mitsubishi Luftkonditionering PLA-RP

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SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
NOTE:
• This manual describes
only service data of the
indoor units.
• RoHS compliant prod-
ucts have <G> mark on
the spec name plate.
CONTENTS
1. TECHNICAL CHANGES.................................. 2
2. REFERENCE MANUAL...................................
2
3. SAFETY PRECAUTION...................................
3
4. PART NAMES AND FUNCTIONS................... 4
5. SPECIFICATIONS............................................
7
6. NOISE CRITERION CURVES.........................
11
7. OUTLINES AND DIMENSIONS......................
13
8. WIRING DIAGRAM .........................................
14
9. REFRIGERANT SYSTEM DIAGRAM............
16
10. TROUBLESHOOTING....................................17
11. SPECIAL FUNCTION .....................................
32
12. DISASSEMBLY PROCEDURE ....................... 41
Indoor unit
[Model names] [Service Ref.]
WIRED REMOTE
CONTROLLER
WIRELESS REMOTE
CONTROLLER
ON/OFF TEMP
ON/OFF
TEMP.
INDOOR UNIT
Model name
indication
PARTS CATALOG (OCB412)
No. OCH412
REVISED EDITION-D
March 2009
Revision:
• PLA-RP140BA2.UK
is added in REVISED
EDITION-D.
• Some descriptions have
been modified.
• Please void OCH412
REVISED EDITION-C.
PLA-RP35BA
PLA-RP50BA
PLA-RP60BA
PLA-RP71BA
PLA-RP100BA
PLA-RP125BA
PLA-RP140BA
PLA-RP71BA2
PLA-RP100BA2
PLA-RP125BA2
PLA-RP140BA2
PLA-RP35BA.UK
PLA-RP35BA1.UK PLA-RP35BA#2.UK
PLA-RP50BA.UK
PLA-RP50BA1.UK PLA-RP50BA#2.UK
PLA-RP60BA.UK
PLA-RP60BA1.UK PLA-RP60BA#2.UK
PLA-RP71BA.UK
PLA-RP71BA1.UK PLA-RP71BA#2.UK
PLA-RP100BA.UK PLA-RP100BA#2.UK
PLA-RP125BA.UK PLA-RP125BA#2.UK
PLA-RP140BA.UK PLA-RP140BA#2.UK
PLA-RP71BA2.UK
PLA-RP100BA2.UK
PLA-RP125BA2.UK
PLA-RP140BA2.UK
2
2REFERENCE MANUAL
Service Ref.
PUHZ-RP200/250YHA(1)(2)
SUZ-KA·VA.TH
Service Manual No.
OC338
PUHZ-P200/250YHA
PUHZ-RP200/250YHA2
OCH424/OCB424
PUHZ-RP35/50/60/71/100/125/140VHA2
(1)
PUHZ-RP100/125/140/YHA2(1)
PUHZ-RP35/50/60/71/100VHA3
PUHZ-RP100YHA3
OC374
PU(H)-P71/100VHA.UK
PU(H)-P71/100/125/140YHA.UK OC379
PUHZ-HRP71/100VHA
PUHZ-HRP100/125YHA OCH425/OCB425
OCH428/OCB428
OCH415/OCB415
MXZ-8A140VA2/VA3
PUHZ-P100/125/140VHA2(1).UK
OC322
OC316
OUTDOOR UNIT’S SERVICE MANUAL
1TECHNICAL CHANGES
PLA-RP35BA1.UK PLA-RP35BA#2.UK
PLA-RP50BA1.UK PLA-RP50BA#2.UK
PLA-RP60BA1.UK PLA-RP60BA#2.UK
PLA-RP71BA1.UK PLA-RP71BA#2.UK
PLA-RP100BA.UK PLA-RP100BA#2.UK
PLA-RP125BA.UK PLA-RP125BA#2.UK
PLA-RP140BA.UK PLA-RP140BA#2.UK
INDOOR CONTROLELR BOARD (I.B.) has been changed. (S/W version up)
PLA-RP35BA.UK PLA-RP35BA 1.UK
PLA-RP50BA.UK PLA-RP50BA1.UK
PLA-RP60BA.UK PLA-RP60BA1.UK
PLA-RP71BA.UK PLA-RP71BA1.UK
FAN MOTOR (MF) has been changed.
TURBO FAN, NUT and WASHER have been changed.
PLA-RP140BA#2.UK PLA-RP140BA2.UK
HEAT EXCHANGER has been changed.
INDOOR CONTROLELR BOARD (I.B.) has been changed. (S/W version up)
3
SAFETY PRECAUTION
3
Cautions for units utilising refrigerant R410A
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
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.
In addition, use pipes with specified thickness.
Store the piping to be used indoors during
installation and 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 refrige-
rant 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.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt 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 deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration 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.
[1] Cautions for service
(1) Perform service after recovering 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.)
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply
circuits must be disconnected.
4
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1 Gauge manifold · Only for R410A
· Use the existing fitting
specifications
. (UNF1/2)
· 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)
· Cylinder with syphon
8 Refrigerant recovery equipment
4PART NAMES AND FUNCTIONS
Drain pipe
Filter
Vane
Gas pipe
Liquid pipe
Air outlet
i-see sensor
(option)
Air intake
(Intake grille)
5
°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
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
L
L
Display Section
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
Identifies the current operation
Shows the operating mode, etc.
*Multilanguage display is available.
“Centrally Controlled” indicator
Indicates that operation from the
remote controller has been prohib-
ited 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, the time to be
switched off is shown.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
To be displayed on when it is time to
clean the filter.
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Room Temperature display
Shows the room temperature. The room
temperature display range is 8–39.
The display blinks if the temperature
is less than 8 or 39 or more.
Louver display
Indicates the action of the swing louver.
Does not appear if the louver is not
running.
(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.
Operation Section
Temperature setting 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
lid
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 return operation
number
Ventilation button
( Operation button)
To go to next operation
number
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.
Built-in temperature sensor
Displayed if the airflow is set to
low or downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off in 1 hour,
when the airflow direction
also changes.
Wired remote controller
6
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.
MODE SELECT button
Used to switch the operation mode between
cooling, drying, heating, auto and fan 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.
Buttons used to set the “hour and minute” of
the current time and timer settings.
h and min buttons
display
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
display
CHECK and TEST RUN display indicate that
the unit is being checked or test-run.
display
OPERATION MODE display
Operation mode display indicates which
operation mode is in effect.
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
LOUVER button
Changes left/right airflow direction.
(Not available for this model.)
SET TEMP. display indicates the desired
temperature which is set.
Lights up while the signal is transmitted to
the indoor unit when the button is pressed.
TIMER CONTROL buttons
Wireless remote controller
7
SPECIFICATIONS
5
kW
A
kW
*/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) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
Cooling
0.05
0.36
Heating
0.04
0.29
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.050
12-14-16-18(425-495-565-635)
0(direct blow)
–
Remote controller & built-in
28-29-31-32
32(1-1/4)
PLA-RP50BA.UK PLA-RP50BA1.UK PLA-RP50BA#2.UK
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 258 (10-3/16) PANEL : 35 (1-3/8)
UNIT : 22 (49) PANEL: 6 (13)
Cooling
0.03
0.22
Heating
0.02
0.14
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.050
11-12-13-15(390-425-460-530)
0(direct blow)
–
Remote controller & built-in
27-28-29-31
32 (1-1/4)
kW
A
kW
*/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) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PLA-RP35BA.UK PLA-RP35BA .UK PLA-RP35BA#2.UK1
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 258 (10-3/16) PANEL : 35 (1-3/8)
UNIT : 22 (49) PANEL: 6 (13)
Cooling
0.05
0.36
Heating
0.04
0.29
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.050
12-14-16-18(425-495-565-635)
0(direct blow)
–
Remote controller & built-in
28-29-31-32
32(1-1/4)
kW
A
kW
*/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
D
H
INDOOR UNIT
PLA-RP60BA.UK PLA-RP60BA .UK PLA-RP60BA#2.UK1Service Ref.
Mode
Power supply (phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan (drive) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.D.
Dimensions
Weight
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 258 (10-3/16) PANEL : 35 (1-3/8))
UNIT : 23 (51) PANEL: 6 (13)
8
Cooling
0.07
0.51
Heating
0.06
0.43
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.050
14-16-18-21(485-565-635-740)
0(direct blow)
–
Remote controller & built-in
28-30-32-34
32(1-1/4)
kW
A
kW
*/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) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PLA-RP71BA.UK PLA-RP71BA .UK PLA-RP71BA#2.UK1
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 258 (10-3/16) PANEL : 35 (1-3/8)
UNIT : 23 (51) PANEL: 6 (13)
Cooling
0.14
0.94
Heating
0.13
0.87
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) 1%
0.120
20-23-26-30(710-810-920-1,060)
0(direct blow)
–
Remote controller & built-in
32-34-37-40
32(1-1/4)
kW
A
kW
*/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
D
H
INDOOR UNIT
PLA-RP100BA.UK PLA-RP100BA#2.UK
Service Ref.
Mode
Power supply (phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan (drive) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.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 : 35 (1-3/8)
UNIT : 25 (55) PANEL : 6 (13)
Cooling
0.15
1.00
Heating
0.14
0.94
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.120
22-25-28-31(780-880-990-1,090)
0(direct blow)
–
Remote controller & built-in
34-36-39-41
32(1-1/4)
kW
A
kW
*/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
D
H
INDOOR UNIT
PLA-RP125BA.UK PLA-RP125BA#2.UK
Service Ref.
Mode
Power supply (phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan (drive) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.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 : 35 (1-3/8)
UNIT : 25 (55) PANEL : 6 (13)
9
kW
A
kW
*/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) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PLA-RP140BA.UK PLA-RP140BA#2.UK
Cooling
0.16
1.07
Heating
0.15
1.00
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.120
24-26-29-32(850-920-1,020-1,130)
0(direct blow)
–
Remote controller & built-in
36-39-42-44
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 : 35 (1-3/8)
UNIT : 27 (60) PANEL : 6 (13)
Cooling
0.07
0.51
Heating
0.06
0.43
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.050
14-16-18-21(485-565-635-740)
0(direct blow)
–
Remote controller & built-in
28-30-32-34
32(1-1/4)
kW
A
kW
*/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) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PLA-RP71BA2.UK
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 840 (33-1/16) PANEL : 950 (37-3/8)
UNIT : 258 (10-3/16) PANEL : 35 (1-3/8)
UNIT : 23 (51) PANEL: 6 (13)
Cooling
0.15
1.00
Heating
0.14
0.94
Single phase, 50Hz, 230V
Munsell 6.4Y 8.9/0.4
Plate fin coil
Turbo fan (direct) % 1
0.120
20-23-26-30(710-810-920-1,060)
0(direct blow)
–
Remote controller & built-in
32-34-37-40
32(1-1/4)
kW
A
kW
*/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
D
H
INDOOR UNIT
PLA-RP100BA2.UK
Service Ref.
Mode
Power supply (phase, cycle, voltage)
Input
Running current
External finish (Panel)
Heat exchanger
Fan Fan (drive) % No.
Fan motor output
Airflow (Low-Medium2-Medium1-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Medium2-Medium1-High)
Field drain pipe O.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 : 35 (1-3/8)
UNIT : 27(60) PANEL : 6 (13)
11
6NOISE CRITERION CURVES
PLA-RP35BA.UK
PLA-RP35BA1.UK
PLA-RP35BA#2.UK
PLA-RP50BA.UK
PLA-RP50BA1.UK
PLA-RP50BA#2.UK
NOTCH SPL(dB) LINE
High 31
Medium1 29
Medium2 28
Low 27
NOTCH SPL(dB) LINE
High 32
Medium1 31
Medium2 29
Low 28
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)
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
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
PLA-RP60BA.UK
PLA-RP60BA1.UK
PLA-RP60BA#2.UK
PLA-RP71BA.UK
PLA-RP71BA1.UK
PLA-RP71BA#2.UK
PLA-RP71BA2.UK
NOTCH SPL(dB) LINE
High 32
Medium1 31
Medium2 29
Low 28
NOTCH SPL(dB) LINE
High 34
Medium1 32
Medium2 30
Low 28
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 80004000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
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
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
OCTAVE .UKND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
12
PLA-RP100BA.UK
PLA-RP100BA#2.UK
PLA-RP100BA2.UK
PLA-RP125BA.UK
PLA-RP125BA#2.UK
PLA-RP125BA2.UK
NOTCH SPL(dB) LINE
High 40
Medium1 37
Medium2 34
Low 32
NOTCH SPL(dB) LINE
High 41
Medium1 39
Medium2 36
Low 34
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)
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PLA-RP140BA.UK
PLA-RP140BA#2.UK
PLA-RP140BA2.UK
NOTCH SPL(dB) LINE
High 44
Medium1 42
Medium2 39
Low 36
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
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
UNIT
1.5m
MICROPHONE
CEILING
13
7OUTLINES AND DIMENSIONS
37728460
( )
Ceiling hole
Branch duct hole
Drain pipe
connected to VP-25
Ceiling
Grille
Drain hole
Models
Auto vane
(Air outlet)
Air intake grille
Ceiling
Cut out hole
Cut out hole
Cut out hole
Burring hole pitch
Burring hole pitch
Burring hole
Burring hole
Power supply wire,
Indoor unit/Outdoor unit
connecting wire entry
Indoor unit/Outdoor unit
connecting terminal block
Indoor power supply
terminal block(Option part)
Control wire entry
Air intake hole
Air intake hole
Air outlet hole
Air outlet hole
Connected the attached
flexible pipe or socket.
Keep approximately
10 to 15mm space
between unit ceiling
and ceiling slab.
Branch duct hole
Fresh air
intake hole
Ceiling hole
Suspension bolt pitch
Suspension bolt pitch
Remote controller
terminal block
Suspension bolt
M10 or W3/8
(7.5)(7.5)
605
+35
- 5
620
DEFROST/STAND BY lamp
Receiver
Operation lamp
In case of standard grille : PLP-6BA / PLP-6BAMD
In case of wireless remote controller : PLP-6BALM Auto grille
Air intake grille up/down distance
Emergency operation
switch<Cooling>and
Emergency Up/Down switch<Up>
160
160
500
500
597
83 36
950
8336
950
597
A
17 +5
0
B35
190
156
105
140
50~70
160
840
150
90
C
D
840
187.5
20~45
860~910
20~45
810
20~45
860~910
20~45
24
160
+ +
+
+
++ + +
+
M
M
M
M
120°
120°
:175
:125
167
158
Vane motor
2
1
Drain pump clean hole
and Drain emergency
drainage hole
130
100
70°
155
350
90 100 100 90
BA C D E
241 258
80
87
74
400
298
85 77
440281
2
1
Refrigerant pipe
···:6.35
Flared connection
···1/4 inch
Refrigerant pipe
···:9.52
Flared connection
···3/8 inch
Refrigerant pipe
···:12.7
Flared connection
···1/2 inch
Refrigerant pipe
···:15.88
Flared connection
···5/8 inch
Refrigerant pipe
: :6.35 / 9.52
Flared connection
1/4 inch/ 3/8 inch
(compatible)
PLA-RP35/50BA
PLA-RP60BA
PLA-RP71BA
PLA-RP71BA2
PLA-RP100,125,140BA
PLA-RP100,125,140BA2
Detail drawing of fresh air intake hole
Detail connecting of branch duct(Both aspects)
3-:2.8
14-:2.8
:150
:100
Emergency operation
switch<Heating>and
Emergency Up/Down switch<Down>
In case of auto-grille : PLP-6BAJ
Suspension bolt
lower edge
170
+
Ceiling
Air intake grille
Max. 4.0m
L.L Filter
Ceiling
Grille
Indoor unit
1500mm
or more
1000mm
or more
3000mm or more
1800mm or more
from floor
For high
attachment
Indoor unit
Obstacle
Floor
Note1. Please choose the grille from a standard grille, auto-grille.
2. As for drain pipe, please use VP-25(O.D.
:
32 PVC TUBE).
Drain pump is included.
Max. lifting height is 850mm from the ceiling.
3. As for suspension bolt, please use M10 or W3/8.
(Procured at local site)
4. Electrical box may be removed for the service purpose.
Make sure to slack the electrical wire little bit for control/power wires connection.
5. The height of the indoor unit is able to be adjusted with the grille attached.
6. For the installation of the optional high efficiency filter or optional multi-functional casement.
1) Requires E or more space between transom and ceiling for the installation.
2) Add 135 mm to the dimensions marked on the figure.+
3) The optional high efficiency filter becomes optional multi-functional casement and concomitant use.
7. When installing the branch ducts, be sure to insulate adequately.
Otherwise condensation and dripping may occur.
(It becomes the cause of dew drops/Water dew.)
8. As for necessary installation/service space, please refer to the left figure.
PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK
PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK
PLA-RP35BA1.UK PLA-RP50BA1.UK PLA-RP60BA1.UK PLA-RP71BA1.UK
PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK
PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK
PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK
Unit: mm
14
WIRING DIAGRAM
8
INDOOR/OUTDOOR
COMMUNICATION
CN3C
(BLU)
<Table 2>SW2(CAPACITY CODE)
SETTING
PLA-RP35BA
MODELS
SW2
ON
OFF
12345
SETTING
PLA-RP100BA
MODELS
ON
OFF
1 2 3 4 5
PLA-RP50BA
ON
OFF
12345
PLA-RP125BA
ON
OFF
1 2 3 4 5
PLA-RP60BA
ON
OFF
12345
PLA-RP140BA
ON
OFF
1 2 3 4 5
PLA-RP71BA
ON
OFF
12345
1 1 4 1 69
1
1
3
1 3
4
5 1
4 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CN2L
ON OFF
SWE
J42J41
SW2SW1
LED3 LED2 LED1
LED2
LED1
RU
SW2
SW1
CNB
3
9
5555
4 5 3
t t t
FS TH2 TH5 TH1
MV
BZ
MVMVMV
M M M M
W.B
TB6
R.B
I.B
MT
M
1 4
2 1
21
21
1
2
12
Refer to tables 1 and 2.
TRANSMISSION
WIRES
DC12V
TB4
YLW
ORN
ORN
BRN
YLW
YLW
ORN
DCL
TO OUTDOOR
UNIT
135
3 1
DC325V
X1
M
1~
DP
D.U.M
CNP
(BLU)
ZNR02
ZNR01
FUSE
DSA
OUTDOOR
CN01
(BLK)
RECTIFICATION
U
U
S1
S2
S3
7 4 1
3~
MF
MS
CN3G
U.B
AUTOMATIC FILTER ELEVATION PANEL
(OPTION PART)
CN3A
3 1
AUTO GRILLE
POWER
CNAC
(WHT)
13
REMOCON
CN22
(BLU)
I-SEE SENSOR
CN4Y
(WHT)
I-SEE
SENSOR MOTOR
CN6Y
(RED)
WIRELESS
CN90
(WHT)
AUTO GRILLE
CN3G
(BLK)
I-SEE SENSOR
CORNER PANEL
(OPTION PART)
I-SEE
SENSOR
GRILLE
VANE
CNV(
WHT)
Pair No.
FAN
CNMF
(WHT)
INTAKE
CN20
(RED)
FLOAT SW
CN4F
(WHT)
LIQUID/PIPE
CN44
(WHT)
TB5
CN32
(WHT)
CN51(WHT)
CN41(WHT)
<Table 1>SW1(MODEL SELECTION)
SETTING
SW1
ON
OFF
12345
+ Be sure to turn off the power source
and then disconnect fan motor connector.
(Failure to do so will cause trouble in fan motor.)
13
13 5
SYMBOL SYMBOLNAME NAME
I.B
INDOOR CONTROLLER BOARD
FUSE (T6.3AL250V)
VARISTOR
SURGE ABSORBER
CONNECTOR (LOSSNAY)
CONNECTOR (REMOTE SWITCH)
CONNECTOR (HA TERMINAL-A)
CONNECTOR (CENTRALLY CONTROL)
POWER SUPPLY (I.B)
POWER SUPPLY (R.B)
TRANSMISSION (INDOOR-OUTDOOR)
RELAY (DRAIN PUMP)
SWITCH (MODEL SELECTION) +See table 1
SWITCH (CAPACITY CODE) +See table 2
CONNECTOR (EMERGENCY OPERATION)
FAN MOTOR
VANE MOTOR
DRAIN-UP MACHINE
DRAIN FLOAT SWITCH
TERMINAL BLOCK (Indoor unit Power (option))
TERMINAL BLOCK (
INDOOR/OUTDOOR CONNECTING LINE
)
TERMINAL BLOCK (REMOTE CONTROLLER
TRANSMISSION LINE)
REACTOR
ROOM TEMP. THERMISTOR
(0 / 15k, 25 / 5. 4k DETECT)
PIPE TEMP. THERMISTOR/LIQUID
(0 / 15k, 25 / 5. 4k DETECT)
COND. / EVA. TEMP. THERMISTOR
(0 / 15k, 25 / 5. 4k DETECT)
MF
FUSE
MV
ZNR01,02
DSA
DP
CN2L
FS
CN32
TB2
CN41
CN51
TB4
DCL
LED1
TB5,TB6
LED2
TH1
LED3
X1
TH2
SW1
TH5
SW2
SWE
[LEGEND]
TO OUTDOOR UNIT
1
3
5
31
CN01
(BLK)
ORN
YLW
BLU
RED
GRN/YLW
I.B
+1(Fig. 1)
I.B
TB2
POWER SUPPLY
~(1PHASE)
230V 50Hz
ORN
ORN
YLW
BRN
TB4
INDOOR/OUTDOOR
COMMUNICATION
CN3C
(BLU)
L
N
S1
S2
S3
Please set the voltage using the
remote controller.
For the setting method, please refer to
the indoor unit Installation Manual.
W.B
RU
BZ
LED1
LED2
SW1
SW2
OPTION PART
PCB FOR WIRELESS REMOTE CONTROLLER
RECEIVING UNIT
BUZZER
LED (OPERATION INDICATION : GREEN)
LED (PREPARATION FOR HEATING : ORANGE)
EMERGENCY OPERATION (HEAT / DOWN)
EMERGENCY OPERATION (COOL / UP)
1.SymboIs used in wiring diagram above are, :Connector, : Terminal (block).
2.Indoor and outdoor connecting wires have poIarities, make sure to match terminal numbers
(S1, S2, S3) for correct wirings.
3.Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric
wiring diagram for servicing.
4.This diagram shows the wiring of indoor and outdoor connecting wires.(specification of 230V),
adopting superimposed system for power and signal.
+1:If indoor and outdoor units have separate power supplies, refer to Fig.1.
+2:For power supply system of this unit, refer to the caution label located near this diagram.
Notes:
PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK
PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK
PLA-RP35BA1.UK PLA-RP50BA1. UK PLA-RP60BA1.UK PLA-RP71BA1.UK
PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK
PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK
1515
SYMBOL SYMBOLNAME NAME
I.B
INDOOR CONTROLLER BOARD
FUSE (T6.3AL250V)
VARISTOR
SURGE ABSORBER
CONNECTOR (LOSSNAY)
CONNECTOR (REMOTE SWITCH)
CONNECTOR (HA TERMINAL-A)
CONNECTOR (CENTRALLY CONTROL)
POWER SUPPLY (I.B)
POWER SUPPLY (R.B)
TRANSMISSION (INDOOR-OUTDOOR)
RELAY (DRAIN PUMP)
SWITCH (MODEL SELECTION) +See table 1
SWITCH (CAPACITY CODE) +See table 2
CONNECTOR (EMERGENCY OPERATION)
FAN MOTOR
VANE MOTOR
DRAIN-UP MACHINE
DRAIN FLOAT SWITCH
TERMINAL BLOCK (Indoor unit Power (option))
TERMINAL BLOCK (
INDOOR/OUTDOOR CONNECTING LINE
)
TERMINAL BLOCK (REMOTE CONTROLLER
TRANSMISSION LINE)
REACTOR
ROOM TEMP. THERMISTOR
(0 / 15kΩ, 25 / 5. 4kΩ DETECT)
PIPE TEMP. THERMISTOR/LIQUID
(0 / 15kΩ, 25 / 5. 4kΩ DETECT)
COND. / EVA. TEMP. THERMISTOR
(0 / 15kΩ, 25 / 5. 4kΩ DETECT)
MF
FUSE
MV
ZNR01,02
DSA
DP
CN2L
FS
CN32
TB2
CN41
CN51
TB4
DCL
LED1
TB5,TB6
LED2
TH1
LED3
X1
TH2
SW1
TH5
SW2
SWE
[LEGEND]
Notes:
1.SymboIs used in wiring diagram above are,
:Connector, : : Terminal (block).
2.Indoor and outdoor connecting wires have polarities, make sure to
match the terminal numbers (S1, S2, S3) for correct wirings.
3.Since the outdoor side electric wiring may change, be sure to check
the outdoor unit electric wiring for servicing.
4.This diagram shows the wiring of indoor and outdoor connecting
wires.(specification of 230V), adopting superimposed system for
power and signal.
 +1:If indoor and outdoor units have separate power supplies, refer to Fig.1.
 +2:For power supply system of this unit, refer to the caution label
located near this diagram.
Please set the voltage using the
remote controller.
For the setting method, please refer to
the indoor unit Installation Manual.
W.B
RU
BZ
LED1
LED2
SW1
SW2
OPTION PART
PCB FOR WIRELESS REMOTE CONTROLLER
RECEIVING UNIT
BUZZER
LED (OPERATION INDICATION : GREEN)
LED (PREPARATION FOR HEATING : ORANGE)
EMERGENCY OPERATION (HEAT / DOWN)
EMERGENCY OPERATION (COOL / UP)
+Be sure to turn off the source power
and then disconnect fan motor connector.
(Failure to do so will cause trouble in fan motor)
2 1
1
1 2
3
5 1
4 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DC325V
X1
DP
MF
D.U.M
CNP
(BLU)
ZNR02
ZNR01
FUSE
DSA
TB4
YLW
ORN
ORN
BRN
YLW
YLW
ORN
OUTDOOR
CN01
(BLK)
INDOOR/OUTDOOR
COMMUNICATION
CN3C
(BLU)
REMOCON
CN22
(BLU) RECTIFICATION
VANE
CNV(
WHT)
CN32
(WHT)
CN51(
WHT)
CN41(
WHT)
CN2L
FAN
CNMF
(WHT)
ON
SWE
INTAKE
CN20
(RED)
FLOAT SW
CN4F
(WHT)
LIQUID/PIPE
CN44
(WHT)
Pair No.
J42J41
SW2SW1
Refer to tables 1 and 2.
LED3 LED2 LED1
5555
TH5TH2FS TH1
MVMVMVMV
GRILLE
TB5
DCL
TRANSMISSION
WIRES
DC12V
TO OUTDOOR
UNIT
2 1
TB6
R.B
I.B
<Table 1>SW1(MODEL SELECTION)
ON
OFF
12345
<Table 2>SW2(CAPACITY CODE)
SW2
PLA-RP100BA2
ON
OFF
12345
PLA-RP125BA2
ON
OFF
12345
PLA-RP71BA2
ON
OFF
12345
1 6
13 3 15
LED2
LED1
RU
SW2
SW1
CNB
3
9453
CN3G
M
MT
BZ
W.B
U.B
AUTOMATIC FILTER ELEVATION PANEL
(OPTION PART)
I-SEE
SENSOR
CN4Y
(WHT)
I-SEE
SENSOR MOTOR
CN6Y
(RED)
I-SEE SENSOR
CORNER PANEL
(OPTION PART)
I-SEE
SENSOR
WIRELESS
CN90
(WHT)
AUTO GRILLE
CN3G
(BLK)
AUTO GRILLE
POWER
CNAC
(WHT)
CN3A
1 3 1 53
U
U
13
S1
S2
S3
t t t
OFF
13 1 4 1 4 1 2 7 4 1
MS
3~
1 4
1
1 3
9
M M M M
2
1
TO OUTDOOR UNIT
1
3
5
31
CN01
(BLK)
ORN
YLW
BLU
RED
GRN/YLW
I.B
+1(Fig. 1)
I.B
POWER SUPPLY
~(1PHASE)
230V 50Hz
L
N
ORN
ORN
YLW
BRN
TB4
TB2
S1
S2
S3
INDOOR/OUTDOOR
COMMUNICATION
CN3C(BLU)
M
1~
PLA-RP140BA2
ON
OFF
1 2 3 4 5
SETTINGMODELS
SW1
PLA-RP140BA2
ON
OFF
12345
PLA-RP71BA2
PLA-RP100BA2
PLA-RP125BA2
SETTINGMODELS
PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK
16
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)
PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK
PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK
PLA-RP35BA1.UK PLA-RP50BA1.UK PLA-RP60BA1.UK PLA-RP71BA1.UK
PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK
PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK
PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK
9REFRIGERANT SYSTEM DIAGRAM
17
<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 trouble reoccurrence at field are summarized in the table below. Check the contents
below before investigating details.
10-1. TROUBLESHOOTING
Unit conditions at service Error code Actions to be taken for service (summary)
The trouble is reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action according
to “10-3. Self-diagnosis action table”.
Conduct troubleshooting and ascertain the cause of the
trouble according to “10-4. Troubleshooting by inferior
phenomena”.
The trouble is not reoccurring.
Logged
Not logged
Consider 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
trouble occurred, matters related to wiring and etc.
Reset error code logs and restart the unit after finishing
service.
There is no abnormality in electrical component,
controller board, remote controller and etc.
Re-check the abnormal symptom.
Conduct trouble shooting and ascertain the cause of
the trouble
according to “10-4. Troubleshooting
by
inferior phenomena”.
Continue to operate unit for the time being if the cause
is not ascertained.
There is no abnormality concerning of parts such as
electrical component, controller board, remote controller
and etc.
TROUBLESHOOTING
10
18
• "CHECK" lights, and refrigerant
address "00" flashes.
• Check that the remote controller's
display has stopped before continuing.
• 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 intermit-
tent 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.
[Procedure]
1. Press the CHECK button twice.
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.
<Malfunction-diagnosis method at maintenance service>
10-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER
<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.
ON/OFF TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESETSET CLOCK
CHECK
CHECK
display
Temperature
button
CHECK
button
Refrigerant
address
display
HOUR
button
ON/OFF
button
19
[Output pattern A] Errors detected by indoor unit
[Output pattern B]
E9
*1 If the beeper does not sound again after the initial
2 beeps to confirm the self-check start signal was received and
the OPERATION INDICATOR lamp does not come on,
there are no error records.
*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 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.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 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
nth
1st 2nd 3rd 1st 2nd
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.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 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
nth
1st 2nd 3rd 1
st 2nd
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 Check code Symptom Remark
(Number of times)
Wireless remote controller
Wired remote controller
Beeper sounds/OPERATION
INDICATOR lamp flashes Check code
(Number of times)
Wireless remote controller
Wired remote controller
1 P1 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/Float switch connector (CN4F) open
5P5
PA
Drain pump error
Forced compressor stop(due to water leakage abnormality)
6 P6 Freezing/Overheating protection 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
1Indoor/outdoor unit communication error
2
(Transmitting error) (Outdoor unit)
3 Open/short of outdoor unit thermistors
4 Compressor overcurrent interruption (When compressor locked)
5Abnormal high discharging temperature/49C worked/
insufficient refrigerant
6Abnormal high pressure (63H worked)/Overheating
protection operation
7Abnormal temperature of heat sink
8Outdoor unit fan protection 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
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
20
•If the unit cannot be operated properly after test run, refer to the following table to find the cause.
Symptom Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
On the wireless remote controller with condition above, following phenomena take place.
• No signals from the remote controller can be received.
• Operation lamp is blinking.
• The buzzer makes a short ping 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 after
power-on
Subsequent to
about 2 minutes
after 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,op-
eration of the remote controller is not possible
due to system start-up. (Correct operation)
•Connector for the outdoor unit’s protection
device is not connected.
•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 addresses “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
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
21
10-3. SELF-DIAGNOSIS ACTION TABLE
Note: Refer to the manual of outdoor unit for the details of display
such as F, U, and other E.
Error Code Abnormal point and detection method Cause Countermeasure
P1
P2
Room temperature thermistor (TH1)
1 The 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.)
2 Constantly detected during cooling,
drying, and heating operation.
Short: -90: or more
Open: -40: or less
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 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 thermis-
tor, breaking of wire or contact failure can be
detected.
2 Check contact failure of connector (CN20)
on the indoor controller board. Refer to 10-7.
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.
Pipe temperature thermistor/Liquid
(TH2)
1 The 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.)
2 Constantly detected during cooling,
drying, and heating (except defrosting)
operation
Short: 90: or more
Open: -40: or less
1 Defective thermistor
characteristics
2 Contact failure of connector
(CN44) 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
1 3– Check resistance value of thermistor.
For characteristics, refer to (P1) above.
2 Check contact failure of connector (CN44)
on the indoor controller board. Refer to 10-7.
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 extremely 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
extremely difference with actual pipe <liquid>
temperature, replace indoor controller board.
Turn the power off, and on again to operate
after check.
P4
Contact failure of drain float switch
(CN4F)
• Extract when the connector of drain float
switch is disconnected.
(3 4 and of connector CN4F is not
short-circuited.)
• Constantly detected during operation
1 Contact failure of connector
(Insert failure)
2 Defective indoor controller
board
1
Check contact failure of float switch connector.
Turn the power on again and check after
inserting connector again.
2 Operate with connector (CN4F) short-
circuited.
Replace indoor controller board if abnormality
reappears.
P5
Drain over flow protection operation
1 Suspensive abnormality, if drain float
switch is detected to be underwater for
1 minute and 30 seconds continuously
with drain pump on.
Compressor and indoor fan will be
turned off.
2 Drain pump is abnormal if the condition
above is detected during suspensive
abnormality.
3 Constantly detected during drain pump
operation
1 Malfunction of drain pump
2 Defective drain
Clogged drain pump
Clogged drain pipe
3 Defective drain float switch
Catch of drain float switch or
malfunction of moving parts
cause drain float switch to be
detected under water (Switch
On)
4 Defective indoor-controller
board
1 Check if drain-up machine works.
2 Check drain function.
3 Remove drain float switch connector CN4F
and check if it is short (Switch On) with the
moving part of float switch UP, or OPEN with
the moving part of float switch down.
Replace float switch if it is short with the
moving part of float switch down.
4 Replace indoor controller board if it is short-
circuited between 3 4- of the drain float
switch connector CN4F and abnormality
reappears.
It is not abnormal if there is no problem about
the above-mentioned
Turn the power off, and on again to operate
after check.
22
Error Code Abnormal point and detection method Cause Countermeasure
P6
Freezing/overheating protection is work-
ing
1 Freezing protection (Cooling mode)
The unit is in 6-minute resume preven-
tion mode if pipe <liquid or condenser/
evaporator> temperature stays under
-15: for 3 minutes, 3 minutes after the
compressor started. Abnormal if it stays
under -15 for 3 minutes again within :
16 minutes after 6-minute resume pre-
vention mode.
2 Overheating protection (Heating mode)
The units is in 6 minute resume
prevention mode if pipe <liquid or con-
denser/evaporator> temperature is
detected as over 70 after the com-:
pressor started. Abnormal if the tem-
perature of over 70 is detected again :
within 30 minutes after 6 minute resume
prevention mode.
P8
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.
(Cooling or drying mode)
1 Clogged filter (reduced airflow)
2 Short cycle of air path
3 Low-load (low temperature)
operation out of the tolerance
range
4 Defective indoor fan motor
• Fan motor is defective.
• Indoor controller board is defec-
tive.
5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit
(clogs)
(Heating mode)
1 Clogged filter (reduced airflow)
2 Short cycle of air path
3 Over-load (high temperature)
operation out of the tolerance
range
4 Defective indoor fan motor
• Fan motor is defective.
• Indoor controller board is defec-
tive.
5 Defective outdoor fan control
6 Overcharge of refrigerant
7 Defective refrigerant circuit
(clogs)
8 Bypass circuit of outdoor unit
is defective.
(Cooling or drying mode)
1 Check clogs of the filter.
2 Remove shields.
4 Refer to 10-6.
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 10-6.
5 Check outdoor fan motor.
6 8~ Check operating condition of refrigerant
circuit.
Pipe temperature
<Cooling mode>
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.
Note 2) Abnormality P8 is not detected in
drying mode.
Cooling range : -3 °C ] (TH-TH1)
TH: Lower temperature between: liquid
pipe temperature (TH2) and condens-
er/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 heat-
ing 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 °C (TH5-TH1) [
1~4 Check pipe <liquid or condenser/evapora-
tor> temperature with room temperature
display on remote controller and outdoor
controller circuit board.
Pipe <liquid or condenser/evaporator>
temperature display is indicated by set-
ting SW2 of outdoor controller circuit
board as follows.
23 Check converse connection of extension
pipe or converse wiring of indoor/outdoor
unit connecting wire.
Conduct temperature check with outdoor
controller circuit board after connecting
‘A-Control Service Tool(PAC-SK52ST)’.
( )
23
Error Code Abnormal point and detection method Cause Countermeasure
P9
Pipe temperature thermistor/
Condenser-Evaporator (TH5)
1 The 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.)
2 Constantly detected during cooling,
drying, and heating operation (except
defrosting)
Short: 90: or more
Open: -40: or less
1 Defective thermistor
characteristics
2 Contact failure of connector
(CN44) on the indoor controller
board (Insert failure)
3 Breaking of wire or contact
failure of thermistor wiring
4 Temperature of thermistor is
90: or more or -40: or less
caused by defective refrigerant
circuit.
5 Defective indoor controller
board
1 3 – Check resistance value of thermistor.
For characteristics, refer to (P1) above.
2 Check contact failure of connector (CN44)
on the indoor controller board.
Refer to 10-7.
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
extremely low (in cooling mode) or high (in
heating mode), refrigerant circuit may have
defect.
5 Operate in test run mode and check pipe
<condenser/evaporator> temperature with
outdoor control circuit board. If there is
extreme 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.
E0
or
E4
Remote controller transmission
error(E0)/signal receiving error(E4)
1 Abnormal if main or sub remote con-
troller cannot receive any transmission
normally from indoor unit of refrigerant
address “0” for 3 minutes.
(Error code : E0)
2 Abnormal if sub remote controller could
not receive any signal for 2 minutes.
(Error code: E0)
1 Abnormal if indoor controller board can
not receive any data normally from
remote controller board or 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)
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 cable x 3 or more.)
• The number of connecting indoor units:
max. 16 units
• The number of connecting remote control-
ler: max. 2 units
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.
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.
c) When “RC E3” or “ERC 00-66” is dis-
played, 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.
E3
or
E5
Remote controller transmission
error(E3)/signal receiving error(E5)
1 Abnormal if remote controller could not
find blank of transmission path for 6 sec-
onds and could not transmit.
(Error code: E3)
2 Remote controller receives transmitted
data at the same time and compares the
received and transmitted data. Abnormal
if these data are judged to be different
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 and com-
pares the received and transmitted data.
Abnormal if these data are judged to
be different 30 continuous times. (Error
code: E5)
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.
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.
c) When “RC E3” or “ERC 00-66” is dis-
played, noise may be causing abnormal-
ity.
1 Contact failure at transmission
wire of remote controller
2 All 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.
3 Miswiring of remote controller
4 Defective transmitting receiving
circuit of remote controller
5 Defective transmitting receiving
circuit of indoor controller board
of refrigerant addresses “0”.
6 Noise has entered into the
transmission wire of remote
controller.
1 2 remote controllers are set as
“main.”
(In case of 2 remote con-
trollers)
2 Remote controller is connected
with 2 indoor units or more.
3 Repetition of refrigerant
address
4 Defective transmitting receiving
circuit of remote controller
5 Defective transmitting receiving
circuit of indoor controller board
6 Noise has entered into trans-
mission wire of remote control-
ler.
In case of checking pipe temperature
with outdoor controller circuit board,
be sure to connect A-control service
tool (PAC-SK52ST).
( )
24
E6
E7
Error Code Abnormal point and detection method Cause Countermeasure
Fb
E1
or
E2
1 Contact failure, short circuit or,
miswiring (converse wiring) of
indoor/outdoor unit connecting
wire
2 Defective transmitting receiving
circuit of indoor controller board
3 Defective transmitting receiving
circuit of indoor controller board
4 Noise has entered into indoor/
outdoor unit connecting wire.
* Check LED display on the outdoor control
circuit board. (Connect A-control service
tool, PAC-SK52ST.)
Refer to outdoor unit service manual.
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
defect in case of twin triple 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”.
1 Defective transmitting receiving
circuit of indoor controller board
2 Noise has entered into power
supply.
3 Noise has entered into outdoor
control wire.
1 3- Turn the power off, and on again to check.
If abnormality generates again, replace
indoor controller board.
Indoor/outdoor unit communication
error (Signal receiving error)
1 Abnormal if indoor controller board
cannot receive any signal normally for 6
minutes after turning the power on.
2 Abnormal if indoor controller board
cannot receive any signal normally for 3
minutes.
3 Consider the unit abnormal under the fol-
lowing condition: When 2 or more indoor
units are connected to an
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.
Indoor controller board
Abnormal if data cannot be read normally
from the nonvolatile memory of the indoor
controller board.
1 Defective indoor controller
board
1 Replace indoor controller board.
Remote controller control board
1 Abnormal if data cannot be read nor-
mally from the nonvolatile memory of the
remote controller control board.
(Error code: E1)
2 Abnormal if the clock function of remote
controller cannot be operated normally.
(Error code: E2)
1 Defective remote controller Replace remote controller.1
PA
Forced compressor stop
(due to water leakage abnormality)
1 The unit has a water leakage abnor-
mality when the following conditions, a)
and b), are satisfied while the above-
mentioned detection is performed.
a) The intake temperature subtracted
with liquid pipe temperature detects
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.)
b) Drain float switch detects to be in the
water for more than 15 minutes.
*Once the water leakage abnormality is
detected, abnormality state will not be
released until the main power is reset.
1 Drain pump trouble
2 Drain defective
· Drain pump clogging
· Drain pipe clogging
3 Open circuit of float switch
4 Contact failure of float switch
connector
5 Dew condensation on float
switch
· Drain water descends along
lead wire.
· Drain water waving due to
filter clogging.
6 Extension piping connection
difference at twin, triple, quad-
ruple system.
7 Miswiring of indoor/ outdoor
connecting at twin, triple, quad-
ruple system.
8 Room temperature thermistor/
liquid pipe temperature thermis-
tor detection is defective.
1 Check the drain pump.
2 Check whether water can be drained.
3 Check the resistance of the float switch.
4 Check the connector contact failure.
5 Check the float switch leadwire mounted.
Check the filter clogging.
6 Check the piping connection.
7 Check the indoor/outdoor connecting wires.
8 Check the room temperature display of
remote controller.
Check the indoor liquid pipe temperature dis
play of outdoor controller board.
25
10-4. 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-
door unit.
2 Defective outdoor controller circuit board
3 Power supply of 220~240V is not supplied to indoor
unit.
4 Defective indoor controller board
(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 controller board
1 Check the voltage of outdoor power
supply terminal block (L, N) or (L
3, N).
• 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 termi-
nal block S1 and S2.
• When AC 220~240V is not detected,
check indoor/outdoor unit connecting
wire for miswiring.
• When AC 220~240V is detected,
check 4 (below).
4 Check the fuse on indoor controller
board.
Check the wiring connection.
If no problem are found, indoor controller
board is defective.
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 (below).2
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 meth-
od of connecting the connectors,
check (below).3
3 Check the fuse on indoor controller
board.
Check the wiring connection.
If no problem 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”.)
1 Check again 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.
27
10-5. EMERGENCY OPERATION
10-5-1. When wireless remote controller fails or its battery is exhausted
10-5-2. When wired remote controller or indoor unit microcomputer fails
When the remote controller cannot be used
When the batteries of the remote controller run out or the remote control-
ler malfunctions, the emergency operation can be done using the emer-
gency buttons on the grille.
DEFROST/STAND BY lamp
Operation lamp
Emergency operation switch (heating)
Emergency operation switch (cooling)
Receiver
Starting operation
• To operate the cooling mode, press the button for more than 2
seconds.
• To operate the heating mode, press the button for more than 2
seconds.
* Lighting of the Operation lamp means the start of operation.
Details of EMERGENCY MODE are as shown below.
Operation mode COOL HEAT
Set temperature 24°C 24°C
Fan speed High High
Air ow direction Horizontal Downward 5
Stopping operation
• To stop operation, press the button or the button .
1. 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 controller board ON, the indoor unit will begin Emergency Operation.
When Emergency Operation is activated, the indoor unit operates as follows:
(1) Indoor fan is running at high speed. (2) Drain-up machine is working.
+ Note on the wireless remote control
When the remote control does not function, it is possible to activate.
Emergency Operation by using the indoor unit Emergency operation switch (SW1, SW2 of the wireless signal
receiver board).
However, if the indoor unit microcomputer has failed, it is nesessary to proceed with points 2 and 3 below as in the
case of the wired remote control.
2. When you activate Emergency operation of the cooling or heating, you have to set the switch (SWE) on the indoor
controller board and activate Emergency operation of the outdoor unit.
For details on how to activate Emergency operation of the outdoor unit, refer to the outdoor unit wiring diagram.
Note: Emergency operation will not work unless outdoor unit is PU series.
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.
• when it has detected the malfunction of drain-up machine during self-diagnosing.
(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 activated, 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.
28
10-6. HOW TO CHECK THE PARTS
PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK
PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK
PLA-RP35BA1 1 1 1.UK PLA-RP50BA .UK PLA-RP60BA .UK PLA-RP71BA .UK
PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK
PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK
PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK
Parts name Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature of 10 ~30 )
Measure the resistance between the terminals with a tester.
(Winding temperature 20)
Measure the resistance between the terminals with a tester.
Drain pump (DP)
i-see sensor
(Option)
Drain float switch (FS)
(Refer to the thermistor.)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor/liquid(TH2)
Condenser/Evaporator
temperature thermistor
(TH5)
1
3
YLW
YLW
Normal
4.3k ~9.6k
Abnormal
Open or short
Normal Abnormal
290 Open or short
State of moving part
Abnormal
DOWN Other than open
UP
Normal
Open
Short Other than short
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 20~30)
Vane motor (MV)
Vane motor for
i-see sensor (Option)
Abnormal
Open or short
Red - Yellow (  - , -, - , - )   
Red - Blue (  - , -, - , - )  
Red - Orange (  - , -, - , - )  
Red - White (  - , -, - , - )   
Connector Normal
300
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 20~30)
Abnormal
Open or short
Red - Yellow
Red - Blue
Red - Orange
Red - White
Connector Normal
250
Normal
Do not disassemble corner panel
with i-see sensor.
Black plastic tape
Turn on the indoor unit with the black plastic tape on the outside of
i-see sensor controller board.
With electricity being turned on, measure the power voltage between connectors with tester.
i-see sensor rotates and pull out the connector of motor for i-see sensor.
Abnormal
DC 1.857V ~ 3.132V Other than the normal
DC 0.939V ~ 1.506V
 (–)— (+)
i-see sensor connector
i-see sensor (At the ambient temperature of 10 ~40 )
NOTE : Be careful not to discharge static electricity into electronics.
 (+)— (–) Other than the normal
4 3 2 1
4 3 1
Blue
Black
Pink
Brown
2
2
1
Moving part
4
3
Switch
Magnet
Moving
Part
Yellow
Blue
Red
Orange
White
Yellow
Blue
Red
Orange
White
29
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature ()
Resistance (k)
<Thermistor Characteristic graph>
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( ) }
0: 15k'
10: 9.6k '
20: 6.3k '
25: 5.4k '
30: 4.3k '
40: 3.0k '
Thermistor for
lower temperature
1
273+t
1
273
10-6-1. Thermistor
Notes
· High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service.
· Do not pull out the connector (CNMF) for the motor with the power supply on.
(It causes trouble of the indoor controller circuit
board and fan motor.)
Self check
Symptom : The indoor fan cannot turn around.
Check method of DC fan motor (fan motor/indoor controller circuit board)
Yes
NG
NG
Wiring contact check
Contact of fan motor connector (CNMF)
Power supply check (Remove the connector (CNMF))
Measure the voltage in the indoor controller circuit
board.
TEST POINT : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC310~340V
TEST POINT : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V
Wiring recovery
Replace the indoor controller board.
Replace the fan motor.
Replace the indoor
controller board.
Replace the fan motor.
Is the voltage normal?
Is there contact failure?
No
Yes
No
Check the operation of fan. END
Yes OK
Check the operation END
OK
Sensor signal check
Measure the voltage between CNMF   and DC 0V
and DC 15V in the indoor controller circuit board.
Does the voltage repeat
DC 0V and DC 15V?
No
Yes
Indoor controller board fuse check
Is the fuse normal? Replace
the fuse.
Check the operation END
OK
Replace the indoor
controller board.
Check the operation END
OK
NG
Replace the fan motor.
Yes
No
NG
10-6-2. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)
30
10-7.TEST POINT DIAGRAM
Indoor controller board
PLA-RP35/50/60/71/100/125/140BA.UK
PLA-RP35/50/60/71BA1.UK
PLA-RP30/50/60/71/100/125/140BA#2.UK
PLA-RP71/100/125/140BA2.UK
CN3C
Transmission
(Indoor/outdoor)
(0~24V DC)
SW2
Capacity setting
SW1
Model selection
CN2L
Connector (LOSSNAY)
CN41
Connector
(HA terminal-A)
CN90
Connect to the wireless
remote controller board
(CNB)
CN20
Room temperature
thermistor (TH1)
CN22
Connect to the terminal
block (TB5)
(Remote controller con-
necting wire)
(10.4~14.6V DC)
LED2
Power supply (R.B)
LED1
Power supply (I.B)
LED3
Transmission (Indoor/outdoor)
CNP
Drain-pump output (DP)
(220-240V AC)
CN01
Connect to the Terminal Block (TB4)
(Indoor/outdoor connecting line)
Between 3 and 5
220-240V AC
CN3G
Connect to the auto grille controller board (CN3G)
13V pulse output
CNV
Vane motor output (MV)
12V pulse output
SWE
Emergency operation
Jumper wire J41,J42
Pair No. setting for wireless
remote controller
FUSE 6.3A /250V
CNAC
Connect to the auto grille
controller board (CN3A)
(220-240V AC)
CNMF
Fan motor
1 4- : DC 310~340V
5 4- : DC15V
6 4- : DC0~6.5V
7 4- : Stop DC0 or 15V
Operation DC7.5V
(0~15V pulse)
VSP : Voltage between pins of
C626
DC0V (FAN stop)
DC1~6.5V (FAN operation)
(Same as (-) of CNMF)6 4(+)–
VFG : Voltage between
PC6722 and C955(-)
(Same as (-) of CNMF)7 4(+)–
VCC : Voltage between pins of
C955 15VDC
(Same as (-) of CNMF)5 4(+)–
CN44
Pipe temperature
thermistor
1 2- : Liquid (TH2)
3 4- :
Condenser/Evaporator(TH5)
CN4F
Drain float switch (FS)
CN4Y
i-see sensor
CN6Y
i-see sensor motor output
12V DC pulse output
CN32
Connector
(Remote switch)
31
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
<Initial setting>
Wireless remote controller: 0
Control PCB: (for both J41 and J42)
4 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 dis-
connected.)
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
For product
Service parts
Indoor controller board type JP3
1 2 3 4 5
ON
OFF
MODELS
PLA-RP·BA
PLA-RP71BA2
PLA-RP100BA2
PLA-RP125BA2
SETTING
PLA-RP35BA
MODELS
ON
OFF
12345
SETTING
PLA-RP100BA(2)
MODELS
ON
OFF
12345
PLA-RP50BA
ON
OFF
12345
PLA-RP125BA(2)
ON
OFF
12345
PLA-RP60BA
ON
OFF
12345
PLA-RP140BA(2)
ON
OFF
12345
PLA-RP71BA(2) ON
OFF
12345
SETTING
ON
OFF
1 2 3 4 5
PLA-RP140BA2
ON
OFF
2 3 4 51
10-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE
Each function is controlled by the dip switch and the jumper wire on control P.C. board.
32
1) Ensure that the air-conditioner is not running.
2) Press the "Down" button to lower the air intake grille.
* By default, the air intake grille will automatically stop at a lowering distance of 1.6 m from the ceiling level.
The distance can be changed to 1.2 m, 2.0 m, 2.4 m, 2.8 m, 3.2 m, 3.6 m and 4.0 m. These should be used
only as a guide. You should lower the air intake grille yourself to check the exact distance.
* When you want to stop the air intake grille while it is lowering, press the "Stop" or "Up" button on the remote
controller to stop at that position.
3) Remove the filter or air intake grille and clean them.
4) Press the "Up" button on the remote controller to put the air intake grille in place.
* If the air intake grille is not placed in the correct position at a time, the operation is automatically retried.
* When you want to stop the air intake grille while it is rising, press the "Stop" or "Down" button on the remote controller
to stop at that position.
Wireless remote
controller for
Automatic Filter
Elevation Panel
Ensure that the air-conditioner is not running.
• Otherwise, it may cause an injury or a failure.
Warning:
11 SPECIAL FUNCTION
11-1. HOW TO PERFORM THE UP/DOWN OPERATION OF THE AIR INTAKE GRILLE
11-1-1. Setting up the lowering distance of air intake grille
1.2 m
- 2.4 m 2.4 m - 2.8 m
2.8 m - 3.2 m 3.2m - 3.6m
3.6 m - 4.0 m 4.0 m - 4.4 m
4.4 m - 4.8 m 4.8 m - 5.2 m
SW22 (Lowering distance Set Up)
2.4 m
2.8 m
3.6 m
1.6 m (Initial setting)
2.0 m
3.2 m
4.0 m
12345678910
ON
OFF
12345678910
ON
OFF
12345678910
ON
OFF
12345678910
ON
OFF
12345678910
ON
OFF
12345678910
ON
OFF
12345678910
ON
OFF
1 2 3 4 5 6 7 8 9 10
ON
OFF
Screws
Unit
Control board
SW22
Decorative
panel
Cover for
Electric Box
You can set up 8 different stages of lowering distance for
the air intake grille according to the set up location if desired.
* As a factory default, the decorative panel will automatically
stop at 1.6 m from the ceiling surface. The distance is a
rough indication, check by actually lowering it.
1) Take the cover off the electric box. (2 screws)
2) Set up the dip switches of SW22 on the control board as followed.
3) Put the cover back on the electric box.
Lowering distance
*Airflow outreach distance is different
depending on indoor units, number of
air outlets and air volume (ceiling
height), airflow may not reach the
indicated ceiling height as shown in
the left table.
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
11-1-2. How to perform the up/down operation using wireless remote controller
3333
11-1-3. How to perform the up/down operation using wired remote controller (PAR-21MAA)
[Note: ]
■General Operation
Operation status
display Button to exit the up/down
operation mode
Down/Up
buttons
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
"Stand by for lowering"
display
"Up/down operation
mode" display
"Lowering" display
(blinking)
"Stopped" display
(when finished lowering)
Alternately
* Raise or lower all the air intake grilles managed by the remote controller at the same time.
Install the remote controller in a place where you can observe all the air-conditioners. Otherwise, the lowering grille may make
contact with something and cause damage to it.
Alternately
[Note:]
Buttons to enter the up/down
operation mode (Press them
simultaneously for 2 seconds.)
• You cannot stop the operation while the air intake grille is lowering.
* If you press the ( ) button while moving down, the air intake grille may stop lowering, but it
will not stop immediately.
• By default, the air intake grille will automatically stop at the lowering distance of 1.6 m
from the ceiling level.
* The distance can be changed to 1.2 m, 2.0 m, 2.4 m, 2.8 m, 3.2 m, 3.6 m, and 4.0 m.
These should be used only as a guide. You should lower the air intake grille yourself to check
the exact distance.
• You cannot stop the operation while the air intake grille is rising.
* If you press the ( ) button while moving up, the air intake grille may
stop rising, but it will not stop immediately.
"Stand by for raising" display
"Raising" display (blinking)
"Stopped" display (when the air intake
grille has been put back into place)
1) Ensure that the air-conditioner is not running.
* The up/down operation mode is only available when the
airconditioner is "OFF".
2) Press both the "FILTER" and "Ventilation" buttons simultaneously for 2 seconds or more to enter the up/down
operation mode.
3) Press the TEMP. ( ) button. After a while, the air intake grille will begin lowering.
4) Remove the filter and/or air intake grille to clean them.
5) Press the TEMP. ( ) button. After a while, the air intake grille will begin to rise and then be put back into place.
6) Exit the up/down mode either by pressing the "ON/OFF" button or by pressing both the "FILTER" and "Ventilation"
buttons simultaneously for 2 seconds or more.
* After exiting the up/down mode, wait for
about 30 seconds to perform the next
operation. The remote controller will not
accept any operation for that period.
Ensure that the air-conditioner is not running.
• Otherwise, it may cause an injury or a failure.
Warning:
34
[Remarks:]
[Remarks:]
Up/down operation mode
Up/down operation mode
Unit No. Refrigerant address No.
Individually-specified up/down operation mode
(a) "Unit No." selection
display
(c) "Standby for up/down operation" display
(b) "Refrigerant address No." selection display
Operation status display
Mode selection
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
If the number of the target air-
conditioner is unknown, go to 4).
In the upper right figure, the air-conditioner
for which the refrigerant address is "00"
and the unit No. is "1" is currently
selected. If the number of the target air-
conditioner is known, go to 5).
1) Ensure that the air-conditioner is not running.
* The up/down operation mode is only available when the
air-conditioner is "OFF".
2) Press both the "FILTER" and "Ventilation" buttons simultaneously for 2 seconds or more to enter the up/down
operation mode.
3) Press the "Ventilation" button. After a while, it will switch to the "individually-specified up/down operation
mode".
4) If you press the "FILTER" button when the "Unit No." or "Refrigerant address No." is blinking, after a while,
the up/down airflow direction of the displayed air-conditioner will be switched downward; and the airflow
direction of the other vents will all be blocked.
5) Select the "Unit No." and "Refrigerant address No.".
■ "Unit No." and "Refrigerant address No." can be changed by using the "TEMP." buttons ( ) ( ) when the panel
displays (a) or (b).
■ Every time you press the "Mode selection" button, the target of operation will change as illustrated below.
6) Continue to press the "Mode selection" button until "Waiting for up/down operation" is displayed.
The following steps are the same as steps 3) - 6) described in the "General Operation" section. Refer to that
section.
■ In Step 5) described below, identify the target
air-conditioner by changing the "Unit No." and
"Refrigerant address No." and by pressing the "FILTER"
button to check the up/down airflow direction.
■ Each pressing action changes the unit No. from "1 - 4" to "0".
(Unit No. "0" means that all of 1 - 4 are targeted.)
■ Each press changes the "Refrigerant address" from "0 to 15".
■ If "Err" is displayed when you press the "FILTER" button to check the target
air-conditioner, the air-conditioner with that "Unit No." or "Refrigerant
address" may not exist. Check and set that air-conditioner again.
Down/Up buttons (for selecting
unit No. and refrigerant
address)
Button to exit the up/down
operation mode
Buttons to enter the up/down
operation mode (Hold them
down simultaneously for 2
seconds.)
■
Up/down operation with the individual specified air-conditioner (when used in combination with Mr. SLIM model)
* Raise or lower the air intake grille of the specific air-conditioner that you select from all that are managed by that remote controller.
"Waiting for up/down operation" display
Ensure that the air-conditioner is not running.
• Otherwise, it may cause an injury or a failure.
Warning:
35
11-2. OPERATION (AUTOMATIC FILTER ELEVATION PANEL: PLP-6BAJ)
SW22 (Lowering distance Set Up)
1.2 m
- 2.4 m 2.4 m - 2.8 m 2.8 m - 3.2 m 3.2m - 3.6m
3.6 m - 4.0 m 4.0 m - 4.4 m 4.4 m - 4.8 m 4.8 m - 5.2 m
2.4 m
2.8 m 3.6 m
1.6 m (Initial setting) 2.0 m
3.2 m 4.0 m
ON
OFF
ON
OFF
123456789
10
123456789
10
1 2 3 4 5 6 7 8 9
10
1 2 3 4 5 6 7 8 9
10
1 2 3 4 5 6 7 8 9
10
1 2 3 4 5 6 7 8 9
10
123456789
10
123456789
10
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Lowering distance
Configuration
Lowering distance
Configuration
Lowering distance
Configuration
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Rough Indication of
the Ceiling Height
Lowering distance
Configuration
Lowering distance
Configuration
Lowering distance
Configuration
Lowering distance
Configuration
Lowering distance
Configuration
UP/DOWN
Machine 1
UP/DOWN
Machine 2
Wire 1b
Wire 1a
Wire 2a Wire 2b
Fig.1
Detection
switch
(1) Normal operation
  UP/DOWN
Air intake grille is raised/lowered by
instructions of “UP” and “DOWN”.
Air intake grille does not move under the
state of no-load detection or obstacle detection.
Air intake grille stops automatically at the set lowering
distance from the ceiling level.
  STOP
It stops in the cases below :
• When it reaches at the set lowering distance from
the ceiling level.
It automatically stops based on the calculation at
distance from the time taken to lower.
• When it is stored in the panel.
Air intake grille is judged to be stored in the panel
when storage detection switch is pressed for 3 seconds continuously.
• When receiving instructions of “STOP”, “DOWN” while moving up and “UP” while moving down.
“STOP” button is only for the remote controller for Automatic Filter Elevation Panel.
As for wired remote controller, it takes several seconds to stop due to transmission speed.
• When both wire 1b and wire 2b are no-loaded.
Only the wire b in each UP/DOWN Machine has tension detection switch.
(2) Special operation
 Re-storing operation
Case : Catch of grille or malfunction of storage detection switch
Re-storing operation will be done when storage detection switch is not pressed with air intake grille raised
by the set distance. And operation below will be repeated up to 4 times.
10cm down 30cm up ···· 10cm down 30cm up
  No-load detection
Case : “UP/DOWN” instruction without grille.
When both wire 1b and wire 2b are no-loaded, grille does not move.
  Obstacle detection
Case : Making contact with something while lowering.
When both wire 1b and wire 2b is no-loaded by making contact with something while lowering, it stops and
is raised by 10cm and stops again.
[Emergency operation]
• When the wireless remote controller cannot be used (in the case of battery discharge, misplacing of the wireless
remote controller, malfunctioning and so on), the emergency switch on the sensor can be used as an alternative.
* When doing this, particular caution must be taken not to fall.
To lower the air intake grille : Press the button once.
(For emergency heating operation, press this button.)
To raise the air intake grille : Press the button once.
(For emergency cooling operation, press this button.)
36
11-3. ELECTRICAL CIRCUIT
(1) Wiring diagram (Panel)
ON 1
1
3
2
5
3
1
1
11
1
2
2
22
2
CN3G
(BLK)
CN3G
(BLK)
CN90
(WHT)
CN2B
(WHT)
FUSE
CNAC
(WHT)
CN22
(BLU)
SW22
CN2C
(WHT)
CN3A
(RED)
U.B R.B
TB6
TB5 1 1
2 2
I.B
Panel Indoor unit
CN2G
(BLK)
CN2F
(BLK)
CN2E
(RED)
SW1
SW2
RU
BZ 3
6
9
2
5
8
1
4
7
CNB
(WHT)
W.B
MU1
MU1
LS21
LS1
LS21
UK1
UK1
2
2
1
1
3
9
WHT
BLK
GRN/YLW
BLK
WHT
WHT
WHT
1 2 3 4 5 6 7 8 9
10
B
R
N
O
R
N
Y
L
W
B
L
K
R
E
D
B
L
K
R
E
D
B
L
K
R
E
D
R
E
D
Symbol Name Symbol Name
U.B Auto grille controller board W.B Wireless remote controller board
FUSE Fuse (3.15A) BZ Buzzer
RU Receiver
SW22 Switch (Lowering distance set up) SW1 Emergency switch (heating/down)
UK1 Up/down machine SW2 Emergency switch (cooling/up)
MU1 Motor (Up/down) LS1 Limit switch (storage detection)
LS21 Limit switch (tension detection) R.B Wired remote controller
I.B Indoor controller board
(2) Check point of trouble
<LED display>
Turn OFF : No power supply
Blink : Storage detection switch ON (short)
One blink : Storage detection switch OFF (open)
Two blinks : Tension detection switch OFF (open)
<controller board>
Check item Check point Normal Remarks
Up/down controller
P.C. board supply
voltage
CN3A
(between 3-5) AC198~264V
Up/down machine
supply voltage CN2B,CN2C DC10~12V Check when instructing up/down with LED
blinking once.
<Up/down machine>
Check item Check point Normal Check contents
Storage detection
switch CN2E open or short
Check if it is short when pressing push switch.
Tension detection
switch CN2F,CN2G open or short Check if it is short when wire b is tensioned.
Motor CN2B,CN2C 5~20Check if it is not open or short.
Entwining wires Pull wire Retension :
about 2kgf
Check if wire is drawn out by pulling with 3kgf.
38
Operation pattern
OC-1 OC-2
IC-1 IC-2
3(2) 3(2)
2
RC
2
Main
unit
Sub
unit
Refrigerant address
"01"
Refrigerant address
"00"
Fig. 1
[Back-up function only]··· Request code number "312"
[Rotation function] & [Back-up function]··· Request code number "313~318"
(Ex:When the request code number is "313", each unit operates alternately in daily cycle.)
Error occurs on main unit.
Start operation
Run Abnormal condition
Stop Run
Main
unit
IC-1
Sub
unit
IC-2
Error occurs on main unit.
Start operation
1~28 days 1~28 days
Run
Abnormal condition
Stop
Stop
Run
Run
Stop Run
Main
unit
IC-1
Sub
unit
IC-2
Main Sub
Main Sub Main Sub Main Sub OC : Outdoor unit
IC : Indoor unit
RC : Wired remote controller
Note:
· When the unit is restarted to operate after turning off the power or OFF operation,the unit which was operationg will start
operation.
· To operate the main unit, refer to the 11-5-2. and set the requet code No. which is not the same as the current one, and set
again the former request code No.
(2) 2nd stage cut-in function
Outline of functions
· When the 1st unit can NOT supply with sufficient capacity for exceptionally high-demand conditions and the actual room
temperature reaches set point *, the 2nd unit starts operation in conjunction with the 1st unit.
· Once the actual room temperature goes down to 4degrees C below set point *, the 2nd unit stops operation automatically.
(* set point = set temperature by R/C (remote controller) + 4, 6, 8 (selectable) ):
· Number of operating units is determined according to the room temperature and set point.
· When room temperature becomes higher than set point, standby unit starts.(2 units operation)
· When room temperature falls below set point -4 , standby unit stops.(1 unit operation):
11-5. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION)
11-5-1. Operation
(1) Rotation function (and Back-up function)
• Outline of functions
· Main and sub unit operate alternately according to the interval of rotation setting.
w Main and sub unit should be set by refrigerant address.(Outdoor Dip switch setting)
Refrigerant address"00" Main unit
Refrigerant address"01" Sub unit
· When error occurs to one unit, another unit will start operation.(Back-up function)
• System constraint
· This function is available only by the grouping control system(INDOOR UNIT : OUTDOOR UNIT=1:1) of 2 refrigerant
groups.(Refer to Fig. 1)
· Main indoor unit should be connected for wired remote controller and the transmission line(TB5) for main and sub unit
should also be connected. (Refer to Fig. 1)
(This function cannot be set by wireless remote controller.)
· Set refrigerant address of each unit.(Dip switch on the outdoor unit···Refrigerant address 00/01)
39
11-5-2. How to set rotation function(Back-up function, 2nd stage cut-in function)
You can set these functions by wired remote controller. (Maintenance monitor)
• System constraint
· This function is available only in cooling mode.
Ex.) Set temp. by R/C = 20:
Set point = 26:
When request code number is “323”.
26 2nd unit Cut-in:
4 degree C
22 2nd unit Cut-out:
20:
Both main and sub unit should be set in same setting.
Every time replacing indoor controller board for servicing, the function should be set again.
NOTICE
[2nd stage cut-in function]··· Request code number "322~324"
Start operation Sub unit start operation
Room temp. Set point
Sub unit stop
Run
Stop StopRun
Main
unit
IC-1
Sub
unit
IC-2
Room temp. < Set point -4
(1) Request Code List
Rotation setting
Initial
setting
Initial
setting
2nd unit cut-in setting
Setting contents
Setting No.
(Request code)
No.7
(316)
No.8
(317)
No.9
(318)
Rotation and Back-up OFF (Normal group control operation)
Monitoring the request code of current setting.
Setting No.
(Request code)
No.1
(310)
No.2
(311)
No.3
(312)
No.4
(313)
No.5
(314)
No.6
(315)
Cut-in function OFF
Monitoring the request code of current setting.
Setting contents
Rotation ON (Alternating interval = 28days) and back-up function
Rotation ON (Alternating interval = 14days) and back-up function
Rotation ON (Alternating interval = 1day) and back-up function
Back-up function only
No.5
(324)
Rotation ON (Alternating interval = 7days) and back-up function
Rotation ON (Alternating interval = 5days) and back-up function
Rotation ON (Alternating interval = 3days) and back-up function
No.1
(320)
No.2
(321)
No.3
(322)
No.4
(323)
Cut-in function ON(Set point = Set temp.+ 4 (7.2F)
Cut-in function ON(Set point = Set temp.+ 6 (10.8F)
Cut-in function ON(Set point = Set temp.+ 8 (14.4F)
40
(2) Setting method of each function by wired remote controller
B: Refrigerant address
C: Data display area
D: Request code display area
TEST
CHECK
FILTER
  
FILTER
ON/OFF
1. Stop operation().
2. Press the button () for 3 seconds so that [Maintenance mode] appears on the screen ().
After a while, [00] appears in the refrigerant address number display area. (at )
3. Press the button () for 3 seconds to switch to [Maintenance monitor].
Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode
(i.e., while “----” is blinking) since no buttons are operative.
[----] appears on the screen ( ) when [Maintenance monitor] is activated.
(The display ( ) now allows you to set a request code No.)
4. Press the [TEMP ( and )] buttons () to select the desired refrigerant address.
5. Press the [CLOCK ( and )] buttons () to set the desired request code No. (“311~318”, “321~324”)
6. Press the button () to perform function setting.
If above setting operations are done correctly, "Request code number will appear in data display area.()
[Example: When the "311" of "Request code number" is set, [311] appears on the screen.()]
[Refererence]
You can check current "request code number" setting by setting the "request code number" (“310” or “320”) and
pressing the button.()
[Example: When the current setting is "Setting No.2 (Request code 311)", [311] appears on the screen.()]
7. To return to normal mode, press the button ().
[ScreenB]
4141
DISASSEMBLY PROCEDURE
12
OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS
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.
Figure 1
Be careful when removing heavy parts.
PLA-RP35BA.UK PLA-RP50BA.UK PLA-RP60BA.UK PLA-RP71BA.UK
PLA-RP100BA.UK PLA-RP125BA.UK PLA-RP140BA.UK
PLA-RP35BA1 1 1 1.UK PLA-RP50BA .UK PLA-RP60BA .UK PLA-RP71BA .UK
PLA-RP35BA#2.UK PLA-RP50BA#2.UK PLA-RP60BA#2.UK PLA-RP71BA#2.UK
PLA-RP100BA#2.UK PLA-RP125BA#2.UK PLA-RP140BA#2.UK
PLA-RP71BA2.UK PLA-RP100BA2.UK PLA-RP125BA2.UK PLA-RP140BA2.UK
2. Removing the room temperature thermistor (TH1)
(1) Remove the air intake grille and the filter. (See Figure 1)
(2) Remove the 2 screws from the electrical box.
(3) Disconnect the connector CN20 (Red) from the indoor con-
troller board.
(4) Remove the room temperature thermistor and holder.
3. Removing the reactor (DCL)
(1) Remove the air intake grille and the filter. (See Figure 1)
(2) Remove the 2 screws from the reactor cover.
(3) Disconnect the relay connector of reactor.
(4) Remove 2 reactor fixing screws and remove the reactor.
4. Removing the indoor controller board (I.B)
(1) Remove the air intake grille and the filter. (See Figure 1)
(2) Remove the 2 screws from the electrical box cover.
(3) Disconnect the connectors :
CNMF (White/7P) for fan motor
CN44 (White/4P) for thermistor (TH2/TH5)
CNP (Blue/3P) for drain pump
CN4F (White/4P) for float switch
CN01 (Black/5P) for earth and reactor
CNV (White/20P) for vane motor
(4) Remove the 6 supports from indoor controller board.
(5) Remove the indoor controller board.
5. Removing the electrical box
(1) Remove the air intake grille and the filter. (See Figure 1)
(2) Remove the 2 screws from the electrical box cover.
(3) Disconnect the connectors. (Refer to 4.)
(4)
Remove 2 electrical box fixing screws and remove 2 hooks.
(5) Pull the electrical box.
<Electrical parts in the electrical box>
Indoor controller board
Terminal block (TB4)(TB5)
Filter
Reactor cover
Photo 1
Electrical box cover Fixing screw
(Electrical box)
Photo 2
Electrical box Electrical box
Fixing screw
Indoor controller
board (I.B)
Electrical box
Fixing screw
Bell mouth
Room temp.
thermistor (TH1)
Turbo fan
Fixing
screw
(reactor)
42
OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS
9. Removing the pipe temperature thermistor (TH2)
and condenser evaporator temperature thermistor (TH5)
(1) Remove the drain pan. (See Photo 6)
(2) Remove the turbo fan. (See Photo 3)
(3) Remove the 2 wiring clamps. (See Photo 3)
(4) Remove the coil plate (2 screws).
(5) Remove the thermistors which are inserted into the holders
installed to the thin copper pipe.
(6) Disconnect the 4-pin white connector (CN44).
7. Removing the panel
(1) Remove the air intake grille and the filter. (See Figure 1)
(2) Disconnect the connector CNV (White/20P).
Corner panel (See Figure 2)
(3) Remove the corner screw.
(4) Slide the corner panel to the direction of the arrow , and 1
remove the corner panel.
Panel (See Photo 4, 5)
(5) Remove the 2 screws from the panel which fix to the oval
holes.
(6) Rotate the panel a little to come to the bell shaped hole
where the screw is large and remove the panel.
6. Removing the fan and fan motor (MF)
(1) Remove the electrical box. (See Photo 2)
(2) Remove the bell mouth (3 screws). (See Photo 2)
(3) Remove the turbo fan nut.
(4) Pull out the turbo fan.
(5) Remove the wire cover (3 screws).
(6) Remove 2 wiring clamps.
(7) Disconnect the connector of the fan motor (CNMF).
(8) Remove the 3 nuts and washers and rubber mounts of the
fan motor.
8. Removing the drain pan
(1) Remove the air intake grille and the filter. (See Figure 1)
(2) Remove the 2 screws from the electrical box cover.
(3) Disconnect the connectors. (Refer to 4.)
(4) Remove the panel. (See Photo 4, 5)
(5) Remove the electrical wiring service panel (3 screws).
(6) Remove the electrical box. (See Photo 2)
(7) Remove the bell mouth. (See Photo 2)
(8) 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
Ball shaped hole
Coil plate
Wire cover
fixing screw
Clamp
Fan motor
Nut
Washer
Rubber mount
Screw
Screw
Corner panel
Corner panel Panel
Detail
Photo 4 Photo 5
Oval hole
Photo 6 Drain pan
fixing screw
Drain pan
fixing screw
Drain pan
Electrical wiring
service panel
Drain pan
fixing screw
Electrical wiring ser-
vice panel fixing screw
Photo 7
Cond./ eva. thermistor (TH5)
Liquid pipe temp. thermistor (TH2)
Photo 3
43
OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS
10. Removing the drain pump (DP) and float switch (FS)
(1) Remove the drain pan. (See Photo 6)
(2) Cut the hose band and remove the hose.
(3) Remove the drain pump assembly (3 screws and 2 hooks).
(4) Remove the drain pump (3 screws).
(5) Remove the float switch (2 screws).
Photo 8
Photo 9
Drain pump
Hose band
Float switch
Drain pump
assembly fixing screw
Drain pump fixing screw Float switch fixing screw
11. Removing the heat exchanger
(1) Remove the drain pan. (See Photo 6)
(2) Remove the 3 screws of the piping cover, and pull out
piping cover.
(3) Remove the 2 screws of coil plate.
(4) Remove the 2 screws of the coil.
(5) Remove the screw of the coil support.
(6) Pull out the heat exchanger.
Photo 10
Coil support fixing screw
Heat exchanger
fixing screw Coil support
Heat exchanger
Coil plate
Piping cover
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CCopyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Mar. 2009 No.OCH412 REVISED EDITION-D PDF 6
Distributed in Apr. 2008 No.OCH412 REVISED EDITION-C PDF 7
Distributed in Feb. 2008 No.OCH412 REVISED EDITION-B PDF 7
Distributed in Oct. 2007 No.OCH412 REVISED EDITION-A PDF 7
Distributed in Mar. 2007 No.OCH412 PDF 7
Made in Japan
New publication, effective Mar. 2009
Specifications subject to change without notice

Produktspecifikationer

Varumärke: Mitsubishi
Kategori: Luftkonditionering
Modell: PLA-RP

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