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173
COMPONENTS TESTING
36k Outdoor Main Printed Circuit Board
Main control board
Compressor
overheat
protection
switch
IPM‑SI
High
pressure
switch
LOW
pressure
switch
SI‑A
Compressor
heater‑L
AC contactor
AC IN
Discharg
e/defrost/
on/
Coil/Sucti
Ambient
sensor
SI‑B
SI‑C
SI‑D
SI‑N
Compressor
heater‑N
4‑WAY
valve
Base
heater
LiqA /GasA
/LiqB /Gas
B sensor
LiqC /GasC
/LiqD /Gas
D sensor
Electronic
expansion
valve A
Electronic
expansion
valve C
Electronic
expansion
valve B
Electronic
expansion
valve D
DC ‑FAN
36k Outdoor Drive Printed Circuit Board
AC LIN
AC NIN
IPM‑SI
DC FAN1
DC fan
motor1
U
Compressor
Compressor V
W
Compressor
Reactor L2
EEPROM
Reactor L1
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