Au482Fibha Pcb Ports Name And Functions - Haier H-MRV Series Service Manual

AU482FIBHA PCB ports name and functions:

Ports name
Low voltage board
CN1 Communication port
CN3 EEV1
CN4 AC
CN5 TC
CN6 Port of suction temperature sensor TS To suction temp. sensor
CN7 Port of ambient temp. sensor TA
CN8 Port of discharging temp. sensor TD
CN9 Port of defrosting temp. sensor TE
CN13 ------------------
CN14 Port of pressure switch
CN15 Power port of control board
CN16 Control port of relay
CN18 IPM
CN24 ------------------
High voltage board
CN1 Power supply port
Refrigerant spray valve
CN3
port
CN4 Oxygen generator port
CN5 Heater port
CN6 Unloading valve port
CN7 4-way valve port
CN8 AC contactor port
CN9 Motor A port
CN10 Motor B port
+12V power
CN11
output port
CN12 4-way 15V output port
CN13 Control port of all relays
Compressor overheat
CN14
protection port
To indoor communication (forbidden to high voltage
electricity)
To EEV
To CN1 of filter board, used to detect the current
To middle of condenser temperature sensor
To ambient temp. sensor
To discharging temp. sensor
To defrosting temp. sensor
No used
To high/low pressure switch
To CN11 of high voltage control board, with +12V power
supply
To CN13 of high voltage control board, used to control high
voltage relay
To CN1 of power module, used to control power module
No used
To 220V, 50HZ power supply, lead from front terminal block
To refrigerant spray valve, used to decrease discharging temp.
To oxygen generator
To heater
To unloading valve, used to control by pass between suction and
discharging, decrease the pressure drop between high pressure and low
pressure
To 4-way valve
To AC contactor
To motor A
To motor B
supply
To CN15 on low voltage board
To CN2 on power module
To CN16 on low voltage board
To the overheat protector in the compressor
Functions
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