11.3 Printed diagram
HBU-18CF03
Port and definition
CN1:external alarm input
CN2:control port of float switch
CN3:control port of low pressure switch
CN4:central control port
CN5:remote receiver panel
CN6:outdoor deforst
80
Commercial Air Conditioner
Model: HBU-18CF03
HDU-42CF03/H HPU-42HF03