Ac Thermostat Control Wiring

Air conditioner thermostat wiring details and color code r terminal is connected to the red wire or r wire this is 24 volt power for the thermostat and controlled devices.

Ac thermostat control wiring.

Origin is the control transformer and then the r terminal. They control your air conditioning system. The green wire underneath your thermostat connects to the fan of your furnace or air handler. Typically the yellow wire will be run to the air handler where at the air handler this wire is usually connected to another wire typically by a wire nut.

It terminates at the air handler or furnace. The common wire sometimes referred to as the c wire is what s responsible for delivering constant power to your thermostat. G terminal is connected to the green wire or g wire this is for the blower fan in the air handler. Furthermore it will be one of the few control wires thermostat wires that will terminate at the condenser in a split system air conditioner and heating system.

The yellow wires terminate at your compressor contactor via an air handler.