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Wiring Diagram - Mitsubishi Electric PCH-2GKHA Service Manual

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6

WIRING DIAGRAM

PCH-2GKHA
/PCH-2.5GKHA
1
PCH-4GKHSA
/PCH-5GKHSA
1
SYMBOL
NAME
C
FAN MOTOR CAPACITOR
CN1<R.B>
PROGRAM TIMER CONNECTOR
CN2<R.B>
REMOTE SWITCH CONNECTOR
CN2L<I.B>
LOSSNAY CONNECTOR
CNP<I.B>
DRAIN-UP MACHINE CONNECTOR
CN50<I.B>
DRAIN SENSOR CONNECTOR
CN51<I.B>
CENTRALLY CONTROL CONNECTOR
F1,2<I.B>
FUSE(6.3A 250V)
FS1,2
THERMAL FUSE(98
:
10A:2GKHA / 117
:
4GKHA110
16A:2.5,3GKHA.5.6GKHSA)
H
HEATER
I.B
INDOOR CONTROLLER BOARD
J1<I.B>
FUNCTION SELECTOR JUMPER RESISTORS
J5<I.B>
MODEL SELECTOR JUMPER RESISTORS
MF
DP
(OPTION)
C
I.B
FAN1
CND
1
3
1 3 5
POWER
CNP
X4
F2
D.U.M
ZNR
X4
SW7
1 2 3 4
SW2
SW6
J5
J9
ON
OFF
1 2 3 4 5 6
2
3
4
1
2
1 2 3 4
[Emergency operation procedure]
(2) Turn on the outdoor unit side circuit breaker, then indoor unit side circuit breaker in this order.
(3) During emergency operation indoor fan runs at high speed but automatic vane remains stop.
(4) If vane closed, open the vane by hand slowly.
(5) Thermostat will not function. Cold air belows 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) If the microcomputer doctor detects the abnormality of the drain-up machine during cooling mode, do not execute emergency
operation.(If causes drain overflow)
NOTES :
1. Since the indoor fan motor (MF 1.2) is connected with
230~240V power. IF 220V power is used. change the dip
switch (SWS<1.B>)on the indoor controller board showing
fig:w1.
fig:w1
Indoor fan motor (MF) for
ON
OFF
2 3 4
1
3. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
4. Indoor and outdoor connecting wires are made with polarities. make wiring matching terminal numbers.
5. Symbols used in wiring diagram above are.
/
/
: Connector,
: Terminal block.
6. 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 controller board.
[Check items]
(1)Make sure that no other trouble exist 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 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 operation mode due to power ON/OFF (ON/OFF with the remote controller is not possible).
[Emergency operation procedure]
(1)Set the dip switch (SW3<I.B>) on the indoor controller board to
20
/PCH-3GKHA
1
/PCH-6GKHSA
1
SYMBOL
J9<I.B>
LED1<I.B>
LED2<I.B>
MF
MV
R.B
RT1
:
16A:
RT2
SW2<I.B>
SW3<I.B>
SW6<I.B>
SW7<I.B>
10VAC
220V
230V
240V
14.3VAC
6
T
CNT
4 3 2
1
1
3
1 3
TRANS
F1
LED2 5V
POWER
LED1 12V
POWER
CN21
SW3
PIPE
ON
CN20
OFF
INTAKE
1 2
J1
4 5 6
7
8
9
10
ON
OFF
2 3 4
1
1
1
NAME
MODEL SELECTOR JUMPER RESISTORS
DC 12V POWER LED
DC 5V POWER LED
FAN MOTOR
VANE MOTOR
REMOTE CONTROLLER BOARD
ROOM TEMPERATURE THERMISTOR
(0
:
/15k
"
, 25
:
/5.4k
"
DETECT)
INDOOR COIL THERMISTOR
:
"
:
"
(0
/15k
, 25
/5.4k
DETECT)
ADDRESS SELECTOR
EMERGENCY OPERATION SWITCH
TWIN/TRIPLE SELECTOR
MODEL SELECTOR
L
POWER SUPPLY
N
~(1 PHASE)
AC220-240V 50Hz
GRN/YLW
AC220V 60Hz
TB2
6
MV
INDOOR UNIT
CN4T
REMOTE CONTROLLER
TRANS
TRANSMISSION WIRES
TB5
DC12V
BLU
2
BLU
1
OUTDOOR UNIT
TB4
BRN
3
TO OUTDOOR UNIT
ORN
2
CONNECTING WIRES
YLW
1
DC12V
BLK
RT2
BLK
MODELS
RT1
GRY
MODELS
BLK
DS(OPTION)
2. Since the indoor transformer (T)is connected with
240Vpower.if 220.230V power is used. Change the wiring
connection showing fig:w2.
fig:w2
230V
220V
on and
off for cooling and
1
2
SYMBOL
SW17<R.B>
ADDRESS SELECTOR
SW18<R.B>
FUNCTION SELECTOR
T
TRANSFORMER
TB2
POWER SUPPLY TERMINAL BLOCK
TB4
INDOOR/OUTDOOR CONNECTING WIRE TERMINAL BLOCK
REMOTE CONTROLLER TERMINAL BLOCK
TB5,6
LINE TRANSMISSION
FAN MOTOR RELAY
X4<I.B>
ZNR
VARISTOR
26H
HEATER THERMAL SWITCH
HEATER CONTACTOR
88H
DP
OPTION DRAIN-UP MACHINE
DS
OPTION DRAIN-UP SENSOR
88H
RED
RED
3
5
BLU
RED
L
BLU
N
TB2
I.B
YLW
YLW
6
1
88H
PCH-2~6GKH(S)A (with heater)
R.B
2GK(H)
2.5GK(H)
3GK(H)
SW17
ON
ON
ON
SW7
OFF
OFF
OFF
1 2 3 4
1 2 3 4
1 2 3 4
8 7 6 5 4 3 2 1
4GK(H)
5GK(H)
6GK(H)
ON
ON
ON
SW7
OFF
OFF
OFF
1 2 3 4
1 2 3 4
1 2 3 4
When power supply is
240V
YELLOW
230V
ORANGE
220V
RED
-
on for heating.
1
2
NAME
H
FS1
FS2
RED
GRY
26H
RED
SW18
TB6
A.1
B.2
OFF
ON
CN1
4 3 2 1
5 4
3
2
1
OFF
CN2
ON
3
2
1
BG79Y189H03-A

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