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Electrical wiring and connection
Introduction of control board QFPD-3F-HCE2 (PCB) sockets
Transformer
input
Electric
heater output
Power
Line plug
Heat water
valve output
Cold water
valve output
Drainage
pump output
Neutra
plug
4-DIP switch
Float switch
Indoor
temperature
sensor input
Wired control
receiver
3-DIP
switch
Step motor
output
Display board
output
Transformer
output
Buzzer
Indoor fan output
High Mid Low Neutral