Skeleton Of Transmission Line Connection - Mitsubishi Electric PRH-P8MYA Technical & Service Manual

• Models PRH-P16MYA/P20MYA
63H21
2 1
X11
3 1 3 1
1
CN3D CN3S CN3N CN24
CN4
2
TH3-1
1
2 CN3
6 6
TH2-1 5 5
1
4 4
CN2 SW1 SW2
2
3 3
TH1-1 2 2
1 1
ON OFF ON OFF
CN40
LEV1
2
SW4
1
(*2)SW5
ON OFF
LED1
4
3
SW3
2
CNMNT
1
ON OFF
X03
X01
CNVMNT
X04
CN23 CN22 CN21 CN26 CN25
1 3 1 3 1 3 1 3 5 1 3
63L1
63H11
CH1
21S41
SV11
51C1 52C1
52C1
C12
3 3
1 6
1
1
CNFC2
3
5 5 5
MF21
CNFAN CNPOW
(*1)
1
3 3 3
C11
F.C.
1
1 BOARD 1
52C1
51C1
BLACK
WHITE
MC1
RED
52F
51F
BLACK RED
WHITE WHITE
MF1
PE RED BLACK
X6
ON OFF ON OFF ON OFF
X6
1 1 X5
2 2
SWE X5
3 3
X4
4 4
X4
5
(*3) SW2
SW1
TH4-1 TH5-1 TH6-1
CN41 CN29 CN21 CN20
1 2 3 4 1 2 1 2 1 2
FB21
INDOOR CONTROLLER
TB5
1 BOARD
2
CN32
LED1LED2LED3
1 2 3
REMOTE
CN90
CONTROLLER
1 2 3 4 5 6 7 8
CN2L CN22
1 2 1 2
REMOTE CONTROLLER
BOARD
CN
TB6 LCD
PE
RETURN AIR
DUCT
Symbol Name
F11,12,21,22 FUSE (15A 250VAC CLASS T)
51C1,51C2 OVER CURRENT RELAY (COMPRESSOR)
52C1,52C2 MAGNETIC CONTACTOR (COMPRESSOR)
63L1,63L2 PRESSURE SWITCH (LOW PRESSURE)
63H11,63H12 PRESSURE SWITCH (HIGH PRESSURE)
63H21,63H22 PRESSURE SWITCH (FOR CONTROL)
MC1,MC2 COMPRESSOR MOTOR
MF21,MF22 FAN MOTOR (OUTDOOR)
TR1,TR2 TRANSFORMER
21S41,21S42 4-WAY VALVE
SV11,SV12 SOLENOID VALVE
CH1,CH2 CRANK CASE HEATER (COMPRESSOR)
LEV1,LEV2 ELECTRONIC EXPANSION VALVE
TB1,5,11,21 TERMINAL BLOCK
MF1 FAN MOTOR (INDOOR)
51F OVER CURRENT RELAY (INDOOR 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 main board] shows PRH-P20MYA setting.
In case of PRH-P16MYA setting is shown as below.
Control box no.1
1 2 3 4
ON
(*2) SW5
[outdoor main board]
OFF
Control box no.2
1 2 3 4
ON
(*2) SW5
[outdoor main board]
OFF

[2] Skeleton of Transmission Line Connection

Unit
(1) System
Remote
controller
CONTROL BOX NO.1
C14
CN27 CN81 CN51
1
DC POWER
SUPPLY
3
CN34
1
OUTDOOR MAIN BOARD
3
TR1
CN28
1
TRANSMISSION 3
CNS3
CIRCUIT
X02 X05
CNFG
1
3
F01 F04 F02 F03
CN53 CN52 CNFC1
C18
1 3 1 3 5 6 1 6 7 5 3 1 CN20 1
X11 2
L1 N L2 L3
2
1
C28
PE
CNOUT2
N.F.BOARD
CNOUT1
F30
F20
F10
PE
CNIN
1 3 5 7
BLUE
N
BLACK
WHITE L3
RED L2
L1
CR
TB11
X2
F21 F11
51F
X1
52F
GREEN/YELLOW
1
3
X1
5
7
FAN
1
3
5
CN03
BLACK
X2
BK (WITH INDOOR
1 2 3 CN02
POWER BOARD)
3
2
1
F1 ZNR
CN01
DC14V
9
CN2S
1 2
CN2D INDOOR
DC14V
DC14V FB11
POWER BOARD
1
2
PE
SUPPLY AIR
DUCT
Symbol
52F MAGNETIC CONTACTOR (INDOOR FAN MOTOR)
TH1-1,TH1-2
TH2-1,TH2-2
TH3-1,TH3-2
THERMISTOR
TH4-1,TH4-2
TH5-1,TH5-2
TH6-1,TH6-2
CR SURGE KILLER
FB11,12,21,22 FERRITE CORE
X4-6 AUXILIARY RELAY
SW1 SWITCH (MODEL SELECTION)
SW2 SWITCH (CAPACITY CORD)
SWE SWITCH (EMERGENCY OPERATION)
LED1 LED (POWER SUPPLY)
LED2 LED (POWER SUPPLY<REMOTE CONTROLLER>)
LED3 LED (TRANSMISSION<INDOOR·OUTDOOR>)
6. SW2(
PRH-P20MYA setting.
In case of PRH-P16MYA setting is shown as below.
7. Emergency operation
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 controller board.
8. mark is connector.
Transmission line
X22
3
1
CN3D CN3S
CN4
2
TH3-2
1
2 CN3
TH2-2
1
2 CN2
TH1-2
CN40
LEV2
(*2)SW5
4
3
2
CNMNT
1
ON OFF
CNVMNT
CN23 CN22
1 3 1 3 1
63L2
63H12
CH2
21S42
SV12 51C2
C28
1
2
2
1 X22
C18
C12
3
1
CIRCUIT BREAKER
(FIELD SUPPLY)
3 5
MF22
PRH-P16MYA: 63A
PRH-P20MYA: 70A (*1)
1 3
PE
C11
PE
1
POWER SUPPLY
N
3N~PE
L3
380/400/415V
L2
50HZ
L1
51C2
TB1
BLACK
WHITE
MC2
RED
RED
WHITE
BLACK
BLUE
ON OFF
1
2
3
4
5
SW1
TH4-2 TH5-2 TH6-2
CN41
1 2 3 4
FB22
C19
INDOOR CONTROLLER
1
3
CN2L
1 2
Name
LIQUID PIPE TEMP
OUT
DISCHARGE TEMP
DOOR
COND/EVA TEMP
ROOM TEMP
IN
LIQUID PIPE TEMP
DOOR
COND/EVA TEMP
* 3)[indoor controller board] shows
4 3 2 1
ON
[intdoor controller board]
OFF
(*3) SW2
- 16 -
63H22
2 1
CONTROL BOX NO.2
C14
1 3 1
CN3N CN24 CN27 CN81 CN51
DC POWER
6 6
SUPPLY
5 5
CN34
4 4
SW1 SW2
3 3
2 2
1 1
OUTDOOR MAIN BOARD
ON OFF ON OFF
CN28
2
SW4
1
ON OFF
LED1
TRANSMISSION
CNS3
CIRCUIT
SW3
X03
X01 X02 X05
CNFG
X04
F01 F04 F02 F03
CNFC1
CN21 CN26 CN25 CN53 CN52
3 1 3 5 1 3 1 3 1 3 5 6 1 6 7 5 3 1
CN20
L1 N L2 L3
52C2
52C2
CNOUT2
3
N.F.BOARD
1 6
1
CNOUT1
CNFC2
5
CNFAN 5
CNPOW
F30
3 3
F20
F.C.
1 1
BOARD
F10
1 3 5 7
CNIN
52C2 BLUE
BLACK
WHITE
RED
F22 F12
X6 1
ON OFF ON OFF
X6
1 X5 3
2
SWE X5
3
X4 5
4
X4
7
(*3) SW2
FAN
CN29 CN21 CN20
1 2 1 2 1 2
1
3
5
CN03
BLACK
BK (WITH INDOOR
BOARD 1 2 3
CN02
POWER BOARD)
3
CN32
LED1 LED2 LED3 2
1 2 3
1
F1 ZNR
CN01
CN90 DC14V
1 2 3 4 5 6 7 8 9
CN2S
1 2
CN22 CN2D INDOOR
DC14V
DC14V FB12
1 2 POWER BOARD
1
2
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) from abnormal
current, over current relays is
installed. Therefore, do not
change factory set value of
over current relays.
1
3
1
3
TR2
1
3
1
3
PE
PE
N
L3
L2
L1
TB21