Commercial Air Conditioner Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03
84
Port and definition:
CN1:control port of live wire of swing motor
CN3:signal input port of ambient temp. sensor ,coil temp. sensor
CN4:control port of 4-way valve(not available for cooling only type)
CN5:primary side of transformer
CN6:second side of transformer
CN7:control port for outdoor fan motor(not available for cooling only type)
CN11:control port of live wire of electric heating
CN12:connect the input of LED
CN13:connect port of netural wire of electric heating
CN16:connect port of remote control detector
CN18:live wire input port of PCB
CN19:netural wire input port of PCB
CN20:outdoor compressor control terminal(also can control outdoor fan motor for
cooling only type)
CN22:high speed control port of indoor fan motor
CN23:middle speed control port of indoor fan motor
HPU-42HF03