Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 66

SRK-H
Models SRK501HENF-L, 561HENF-L
Power source
1 Phase 220/240V 50Hz
Y/GN
LB
BR
Y/GN
52C-4 G 52C-3 S
52C
BL
5
Y F
4
( )
250V
WH
FM 3
3.15A
I
BK
2
RD
1
CNU
CNM
LM
Printed circuit board
Color symbol
BK Black
BL Blue
BR Brown
RD Red
OR Orange
WH White
Y Yellow
LB Light blue
Y/GN Yellow/Green
Meaning of marks
Symbol
C Capacitor for CM
C
CF Capacitor for FM
O
CM Compressor motor
F Fuse
FM Fan motor (Indoor unit)
I
FM
Fan motor (Outdoor unit)
O
LM
Louver motor
PC Photo coupler
Table of relay operations
Operation
Relay symbol Control part
52X 20S
1
52X
A
FM
52X
B
52C CM
; denotes magentized relay ×: denotes demagnetized relay
Notes (1)
(2) Th is room temperature sensor. Th
1
64
Indoor unit
OR
RD
WH
BK
20S 23D
52C
PC
52X
1
52X1
ZNR
Parts name Symbol
O
52X
Cooling Heating
×
×
× ×
O
(the heat exchanger sensor) is the hot start, hot keep, and frost prevention sensor. (for details, refer to pages 71, 72, 74)
2
Outdoor unit
RD
4 4
BL
3 3
WH
2 2
BK
1 1
TH
1
TH
2
Wireless
R-Amp
Display
Parts name
Th Thermistor
1, 2
ZNR Varistor
20S 4 way valve. coil
51C Motor protector for CM
52C Magnetic contactor for CM
Auxiliary relay
A, B, 1
63H
High pressure switch
23DH Thermostat (Defrost)
Defrost
×
×
RD
RD 63H RD
RD
52X
A BK
2 23
DH
52X
B
6
BL
BK
51C
OR
FM0 20S 52X
A
OR CF Cc
52X
0
B
CM