Haier AB422XCBAA - Main Control Board Ports; Filter Board Ports; Remote Receive & Function Selection Ports

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Ports functions of main control board:
CN1: power supply neutral wire input port
CN2: power supply live wire input port
CN3, CN4: power supply live wire and neutral wire input of filter board
CN5: upper motor control port
CN6: lower motor control port
CN7: lower motor feedback signal input port
CN8: communication port between indoor and outdoor
CN12: PCB low-voltage power supply input port
CN13: to central control detector
CN15: connection port of ambient temp. and coil temp. sensor
CN20: lower swing motor
CN21: upper swing motor
CN22: room card control connection port
CN26: function selection input port
CN27: connection port of remote receive board
CN28: upper motor feedback signal input port
Ports functions of filter board:
CN101: filter board power supply input port
CN103: main control board power supply output port
Ports functions of remote receive board:
SW1: emergency operation switch button
Ports functions of function selection board:
CN2: function selection output port
SW2: to select the state of fan motor and swing. Up position: upper/lower motors, swing
are in ON state; Down position: lower motor and swing are in OFF state
SW3: passive element control switch
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