N
P
U
V
CN502
CN501
W
CN102:
CN103:
CN105: to CN501 on power module
CN106: to CN502 on power module
CN107: control port of 4-way valve
CN108:
CN109: DC input port
CN112
：control port of fan motor
RL301:
P301
：bus lead port of PCB
P302
：current lead port of rectifier
P303:current lead port of rectifier
P304:earthing port
P1: outdoor communication port
JMD, JMB
：
JMA, JMC：
CN1：
CN4：
CN5：signal input port of low pressure switch
CN6：signal input port of high pressure switch
LED1, LED2, LED3, LED4：
LED5：
CN110：signal input port of discharging temp. sensor
CN111
：signal input por tof ambient temp. sensor and coil temp. sensor
Ports on PCB functions for AU242AHBIA
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