Service manual
15
WIRING DIAGRAM6
NOTES :
1. Since the indoor transformer (T)is connected with 240Vpower. If 220, 230v power is used. change the wiring connection showing fig: w2
When power supply is
2. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
3. Indoor and outdoor connecting wires are made with polarities. make wiring matching terminal numbers.
4. Symbols used in wiring diagram above are. / : Terminal block, : Connector.
5. Emergency operation
If remote controller or microcomputer fails but there is no other truble,. emergency operation is possible by setting dip switch (SW3<I.B>) on the indoor con-
troller board.
[Check items]
(1)Make sure that no other trouble exists the outdoor unit. Trouble with the outdoor unit prevents emergency operation.
(If any trouble exists the outdoor unit error code “P8”will be displayed on the remote controller and the trouble position will be shown on the outdoor controller
board LED. See electric wiring diagram of the outdoor unit for details.)
(2)Make sure that there is no trouble with the indoor fan.
Emergency operation will be continuous run with the power ON/OFF (ON/OFF with the remote controller is not possible).
[Emergency operation procedure]
(1)Switch the fan connector on the indoor controller board from FAN 1 to FAN 2.
(2)Set the dip switch (SW3<I.B>) on the indoor controller board to 1 on and 2 off for cooling and 1 - 2 on for heating.
(3)Turn on the outdoor unit side circuit breaker, then the indoor unit side circuit breaker.
(4)During emergency operation indoor fan runs at High speed but auto-vane does not work.
(5)Thermostat will not function. Cold air blows out for defrosting during heating thus do not operate defrosting for a long time.
(6)Emergency cooling should be limited to 10 hours maximum. (the indoor unit heat exchanger may freeze).
(7)After every operation, switch the fan connector to FAN1, and set all dip switches (SW3<I.B>) to OFF.
NOTE: If the drain water lift up mechanism is identified to be defective with the microcomputer doctor during cooling, do not use emergency operation
(it causes drain overflow)
fig:w2
240V
230V
220V
230V
220V
YELLOW
ORANGE
RED
SYMBOL NAME
R.B
REMOTE CONTROLLER BOARD
SW17<R.B> ADDRESS SELECTOR
SW18<R.B> FUNCTION SELECTOR
CN1<R.B>
PROGRAM TIMER CONNECTOR
CN2<R.B>
REMOTE SWITCH CONNECTOR
MV VANE MOTOR
LS LIMIT SWITCH
H2 DEW PREVENTION HEATER
RT1
ROOM TEMP. THERMISTOR(0°C/15KΩ,25°C5.4KΩ)
RT2
INDOOR COIL THERMISTOR(0°C/15KΩ,25°C5.4KΩ)
T TRANSFORMER
MF INDOOR FAN MOTOR
C1 FAN MOTOR CAPACITOR
TB2~6 TERMINAL BLOCK
I.B INDOOR CONTROLLER BOARD
SYMBOL NAME
CN2L<I.B>
LOSSNAY CONNECTOR
CN51<I.B>
CENTRALLY CONTROL CONNECTOR
FAN2<I.B>
EMERGENCY OPERATION CONNECTOR
F.C<I.B> FAN PHASE CONTROL
SW1<I.B> MODE SELECTOR
SW2<I.B> ADDORESS SELECTOR
SW3<I.B>
EMERGENCY OPERATION SWITCH
SW5, SW7<I.B> MODEL SELECTOR
SW6<I.B> TWIN, TRIPLE SWITCH
SWA<I.B>
HIGH SEILING, NOISE SAVING SELECTOR
SWB<I.B>
NUMBER OF AIR OUTLETS SELECTOR
SWC<I.B> OPTION SELECTOR
ZNR<I.B> VARISTOR
X1<I.B>
DRAIN PUMP/D.HEATER RELAY
SYMBOL NAME
X3<I.B>
VANE MOTOR RELAY
X4<I.B>
FAN MOTOR RELAY
F1<I.B> FUSE (6.3A)
LED1<I.B> DC 12V POWER LED
LED2<I.B> DC 5V POWER LED
CNP<I.B> DRAIN PUMP CONNECTOR
CN50<I.B> DRAIN SENSOR CONNECTOR
DP DRAIN PUMP
DS DRAIN SENSOR
H1 HEATER
FS1,2 THERMAL FUSE
26H HEATER THERMAL SWITCH
88H HEATER CONNECTOR
CNV<I.B> VANE MOTOR CONNECTOR
PLH-1.6KKHB·UK/PLH-2KKHB·UK/PLH-2.5KKHB·UK
2.5KK
2KK1.6KK
MODELS
SW7
OFF
ON
32
1
OFF
ON
32
1
OFF
ON
32
1
fig:1
YLW
YLW
YLW
BLU
RED
BLU
RED
YLW
*PLH-1.6,2,2.5KKHB(with heater)
26H
1
2
POWER SUPPLY
~(1PHASE)
220-240V
50Hz
H1
L
N
3
88H
TB2
3
1
5
FS1
FS2
HEATER
CN24
1
6
88H
1
2
2
1
3
4
1
5
4
3
2
1
3
2
5
4
3
2
1
1
3
5
1
0
DP
6
1
7
2
MV
MF
31 5
1
5
4
3
2
4
3
2
1
2
1
4
3
2
1
2
1
2
1
1
3
2
2
1
2
1
1234
31313131
5
B
R
N
B
R
N
LS
Showing
fig:1
12V POWER
LED1
5V POWER
LED2
X1X3
X4
STD
OP
SWC
SW7 SW3
2
1321
4
3
2
SWB
1
2
3
SWA
10987432165
4321
SW6
4321654
3
2
1
SW1
SW5
CN24
HEATER
OFF
ON
SW2
RT2
DS
RT1
CN51
CONTROL
CENTRALLY
DRAIN
CN50
CN41
POWER
REMOCON
CN40
INTAKE
CN20
PIPE
CN21
CN22
TO REMOCON
CN30
OUTDOOR
CN23
VANE
CN2L
LOSSNAY
R
.B
.
OFF
OFF
ON
TB6
SW17
SW18
CN1
CN2
2
1
2
1
BLU
BLU
TRNSMISSION W
IRES DC12V
BRN
ORN
YLW
TRNSMISSION WIRES DC12V
OUTDOOR
UNIT
3
2
1
1
3
2
TB3
TB4
BLK
WHT
GRILL
H2
BLU
BLU
B
R
N
B
R
N
BRN
BRN
CN4T
TRANS
11.1V AC
14.2V AC
BRN
RED
T
YLW
ORN
YLW
RED
RED
BLU
RED
GRN/YLW
POWER SUPPLY
~(1PHASE)
220-240V 50Hz
220V 60Hz
N
L
TB2
YLW
YLW
C1
RED
FAN2
F1
ZNR
X1X3
X4
F.C
TRANSPOWERD.U.M.VANEFAN
CNTCNDCNPCNVFAN1
BG79Y408H01
ON