Yellow: high pressure protect
compressor top temperature sensor
N_in: connect to N-line (208-230V AC input)
connect to chassis heater, 208-230V AC when is ON
L_in: connect to L-line (208-230V AC input)
connect to compressor heater, 208-230V AC when is ON
connect to 4 way valve, 208-230V AC when is ON.
connect to outdoor AC fan
Electronic
Expansion
valve
connect to Electric Expansion Valve A
connect to Electric Expansion Valve B
connect to Electric Expansion Valve C
connect to Electric Expansion Valve D
Current loop communication A, signal wire, connect to the terminal (24V
DC Pulse wave)
Current loop communication B, signal wire, connect to the terminal (24V
DC Pulse wave)
Current loop communication C, signal wire, connect to the terminal (24V
DC Pulse wave)
Current loop communication D, signal wire, connect to the terminal (24V
DC Pulse wave)