Honeywell pro series thermostat wiring

Known as the common wire, C-Wire provides WiFi thermostats continuous power from heating e. Air Conditioning systems. C-Wires are required on all Resideo WiFi thermostats.

Check your thermostat wiring compatibility. Skip to main content. Our Accessibility Statement. How do I wire my thermostat? Last updated. When wiring, each wire should be identified by what terminal s it connects to — never by color.

Honeywell pro series thermostat wiring

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You can now finish the installation of your new thermostat! You may need to reference this image later.

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Honeywell pro series thermostat wiring

Check your thermostat wiring compatibility. Skip to main content. Our Accessibility Statement. How do I wire my thermostat?

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How to check if your thermostat is using a C-Wire. For your safety, turn off power at the breaker box or switch that powers your furnace or air conditioning. C Connect the unused wire to the C-terminal in the control board. Label your unused wire with the "C" sticker provided with your new thermostat. B Take a picture of the control panel wiring Make sure you get a good view of the following terminals, since you may need to reference this image later: G C R W or W1 not in all systems Y or Y1 Note : If you have wires connected to two R-Terminals, then you have a two-transformer system and need additional assistance. Check the boxes and write down the color of the wires connected to terminals in the existing wall plate. C wire adapters are available here. Air Conditioning systems. Check all that apply not all will apply. However, some lift from the bottom and lever off, and others have a locking tab. Make a note of any present wire not connected to a terminal. The control board may be at the top or the bottom.

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Make sure you get a good view of the following terminals, since you may need to reference this image later:. If you have a thermostat with a digital display and it goes blank, you can skip this process. If we recommend placing a wire in a terminal, do not move it to another terminal if we address it later in the guide. Online chat Offline chat. If you see wires connected to terminals labeled G1 G2 G3, you need a thermostat capable of controlling multiple fan speeds; none of our retail thermostats are compatible with this system type. Our Accessibility Statement. Congratulations: You've connected a C-Wire! You may need to reference this image later. These steps will require access to your HVAC system. You can purchase a C-Wire Adapter here.