Electrical Wiring Diagram; Unit - Mitsubishi Electric PRH-P8MYA Technical & Service Manual

9

ELECTRICAL WIRING DIAGRAM

[1] Unit

• Models PRH-P8MYA/P10MYA
REMOTE CONTROLLER
REMOTE CONTROLLER
BOARD
CN
TB6
LCD
INDOOR-SIDE
CONTROLLER BOARD
1
CN2L
2
TB5
1
1
CN22
2 1
2
2
CN32
3
1
2
CN90
3
PE
4
LED1
RETURN AIR
5
DUCT 6
LED2
7
LED3
8
PE 9
SUPPLY AIR
2 1 CN2D
DUCT CN03
DC14V
FB1
INDOOR-SIDE
POWER BOARD
CN01
1
1 2 3
2
3
CN2S
DC14V F1
CN02
1
DC BLACK
ZNR
BK
2
14V
(WITH INDOOR
POWER
BOARD)
Symbol Name
F1,F2 FUSE (15A 250VAC CLASS T)
51C OVER CURRENT RELAY (COMPRESSOR)
52C MAGNETIC CONTACTOR (COMPRESSOR)
63L PRESSURE SWITCH (LOW PRESSURE)
63H1 PRESSURE SWITCH (HIGH PRESSURE)
63H2 PRESSURE SWITCH (FOR CONTROL)
MC COMPRESSOR MOTOR
MF2 FAN MOTOR (OUTDOOR-SIDE)
TR TRANSFORMER
21S4 4-WAY VALVE
SV1 SOLENOID VALVE
CH CRANK CASE HEATER (COMPRESSOR)
LEV ELECTRONIC EXPANSION VALVE
TB1,5 TERMINAL BLOCK
MF1 FAN MOTOR (INDOOR-SIDE)
51F OVER CURRENT RELAY (INDOOR-SIDE FAN MOTOR)
Note:1. The dotted lines show field wiring.
2. Color of earth wire is yellow and green twisting.
3. Specification subject to change without notice.
4.This motor( * 1) includes auto reset type internal thermostat.
5. SW5( * 2)[outdoor-side controller board] is shown
PRH-P10MYA setting.
In case of PRH-P8MYA setting is shown as below.
1 2 3 4
ON
[outdoor-side controller board]
OFF
SW5
(*2)
TH4
PE MC
MF1
TH5
TH6
FB2
5 4 3 2 1
1
ON
2
CN41
OFF
51F 51C
3
SW1
4
4 3 2 1
1
ON
CN29
2 OFF
* 52F 52C
( 3)SW2
1
CN21
ON
2
SWE
OFF
1
CN20
X4 X5 X6
2
X4 X5 X6
5 3 1 7 5 3 1
FAN
CR
52F
51F
F2
F1
TB1
L1 L2 L3 N PE
POWER SUPPLY
3N ~ PE
380/400/415V
50HZ
Symbol
52F MAGNETIC CONTACTOR (INDOOR-SIDE FAN MOTOR)
TH1
TH2
TH3
THERMISTOR
TH4
TH5
TH6
CR SURGE KILLER
FB1,FB2 FERRITE CORE
X4-6
SW1
SW2
SWE
LED1
LED2
LED3
6. SW2(
7. Emergency operation
8.
( * 1) SV1 21S4
MF2
1 3 1 3 51C
C11 C12
1 3 5
1
CNFAN
CNFC2
F.C.
52C
BOARD
CNPOW
6
52C
1 3 5
1 3 5 1 3
CNOUT1
CNOUT2
F10
1
F20
3
F30
5
7
CNIN N.F.BOARD
GREEN/YELLOW
PE
PE CIRCUIT BREAKER
(FIELD SUPPLY)
PRH-P8MYA : 63A
PRH-P10MYA: 63A
Name
LIQUID PIPE TEMP
OUT
DOOR
DISCHARGE TEMP
-SIDE
COND/EVA TEMP
ROOM TEMP
IN
LIQUID PIPE TEMP DOOR
-SIDE
COND/EVA TEMP
AUXILIARY RELAY
SWITCH (MODEL SELECTION)
SWITCH (CAPACITY CORD)
SWITCH (EMERGENCY OPERATION)
LED (POWER SUPPLY)
LED (POWER SUPPLY<REMOTE CONTROLLER>)
LED (TRANSMISSION<INDOOR-SIDE·OUTDOOR-SIDE>)
* 3)[indoor-side controller board] is shown
PRH-P10MYA setting.
In case of PRH-P8MYA setting is shown as below.
4 3 2 1
ON
[intdoor-side controller board]
OFF
SW2
(*3)
If a trouble occurs with either the remote controller or the unit
microcomputer and no other trouble exists, emergency operation for
cooling or heating can be performed by changing the setting of
switch (SWE) on the indoor-side controller board.
mark is connector.
- 15 -
CH 63H1 63L
LEV
CN23
1 CNVMNT CNMNT CN40
3
CN22
1
1 2 3 4
ON
3
OFF
*
( 2)SW5
CN21
1
1 2
3
ON ON
X04 OFF OFF
CN26
1
SW3 SW4
3
X03
5
LED1
ON
CN25
1
OFF
3
X01
CN53
1
3
X02
OUTDOOR-SIDE
CN52
1
CONTROLLER BOARD
X05
5
CNFC1
1
TRANSMISSION
CIRCIT
6
L1 CN20
7
F01
N
5
F04
L2
3
F02
L3
1
F03
CNFG CNS3 CN28
3 1 3 1 3
TR
Symbol Name
F1 FUSE (4A 250VAC CLASS T)
ZNR VARISTOR
F01-F04 FUSE (6.3A 250VAC CLASS F)
LED1 LED (FOR SERVICE)
X01-X05 AUXILIARY RELAY
SW1-5 SWITCH
F10-F30 FUSE (6.3A 250VAC CLASS F)
REMOTE CONTROLLER
Symbol Name
TB6 TERMINAL BLOCK
Caution,
1. To protect compressor and fan
motor (indoor-side) from
abnormal current, over current
relays is installed. Therefore,
do not change factory over
current relays is installed.
Therefore, do not change
factory set value of over current
relays.
TH1 TH2 TH3
2 1 2 1 2 1
CN2 CN3 CN4
CN3D
CN3S
1 2 3 4 5 6
SW1
CN3N
63H2
1 2 3 4 5 6
3 2
CN24
1 1
SW2
C14
CN27
CN81
CN51
DC POWER
SUPPLY
CN34
1 3 1
CONTROL BOX