WIRING
Typical 1H/1C heat pump system
Typical heat-only system
(HOT)
(HOT)
COMPRESSOR
RELAY
COOL
REVERSING VALVE
HEAT RELAY
FAN RELAY
HEAT
REVERSING VALVE
Typical heat-only system with fan
Typical cool-only system
(HOT)
(HOT)
COMPRESSOR
RELAY
FAN RELAY
FAN RELAY
HEAT RELAY
12