Air Conditioning Thermostat Wiring Diagram. Sometimes, the wires will cross. Heat pump thermostat wiring diagram honeywell honeywell th5220d1003 wiring diagram free wiring diagram.
Air conditioning ac contactor control board 1 this diagram is to be used as reference for the low. 5 wire thermostat is basically a 4 wire thermostat with a “c” or “common” wire. They control anything from smart air conditioners, heat pumps, furnaces, and so on.