Ac Wiring Diagram Thermostat. Breakdown of colors and terminals thermostat wiring diagram for ac unit. It s very easy to obtain perplexed about electrical wiring layouts and also schematics. Always refer to your thermostat or equipment installation guides to verify proper wiring.
If you have a two stage heat pump then you will also utilize terminal y2 for the second stage. For programmable thermostats and smart thermostats c wires are essential for setting a schedule or having your heat or air conditioner turn on at a desired temperature while some units can run without a c wire even brands like nest recommend having one for optimal. Notesome ac systems will have a blue wire with a pink stripe in place of the yellow or y wire. Always refer to your thermostat or equipment installation guides to verify proper wiring.
For programmable thermostats and smart thermostats c wires are essential for setting a schedule or having your heat or air conditioner turn on at a desired temperature while some units can run without a c wire even brands like nest recommend having one for optimal.
For programmable thermostats and smart thermostats c wires are essential for setting a schedule or having your heat or air conditioner turn on at a desired temperature while some units can run without a c wire even brands like nest recommend having one for optimal. Red wire for air conditioner control power hot. Y terminal to the yellow wire. Always refer to your thermostat or equipment installation guides to verify proper wiring. G terminal to the green wire.