CM
51C
FMo
FM
I
SM
LM1
LM2
BK
BK
Th1
Th2
BKBLLB
Y/GN
Y/GN
TT
BK
BKWH
WH
WHWH BRBR
RD
WH
Y
WH
WH
WH
RD
WH
BK
L2
2
3
1
L3
L1
Sh
CFo
CF
I
ZNR
CONTROL BOX
Printed circuit board
Power source
220V 50Hz
F
(250V 3.15A)
Cc
OR
OR
Outdoor unit
Indoor unit
1
2
~
~
1
2
Wireless
Display
CNE
CNY
CNX
CNM
CNW
52C3N
52C
52C4
1
5
3
CNU
CNG
Back up Sw
R-Amp
BK Black
BL Blue
BR Brown
LB Light blue
Y Yellow
RD Red
OR Orange
WH White
Y/G Yellow/Green
Color symbol
Symbol
Parts name Symbol Parts name
C
C
Capacitor for CM
SM Flap motor
CF
I
Capacitor for FM
I
Th
1
,
2
Sensor
LM
1
,
2
Louver motor
CF
O
Capacitor for FM
O
T Terminal block
CM Compressor motor
ZNR Varistor
F Fuse
51C Motor protector for CM
FM
I
Fan motor (Indoor unit)
52C Magnetic contactor for CM
FM
O
Fan motor (Outdoor unit)
Meaning of marks
Notes (1) : denotes magnetized relay
×
: denotes demagnetized relay
(2) Th
1
is room temperature sensor. Th
2
(the heat exchanger sensor) is frost prevention sensor.
Operation
Cooling
Relay symbol Control part
52C CM
Table of relay operations
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