Thermostat wiring

Larry23 — Mon, 27 Nov 2023 19:52:55 GMT

Hey all, my HVAC has been running with a competitors smart thermostat for the last 12 years and now they have changed their format on the website and I am no longer able to use it with out paying for subscription . My wife bought me a new nest thermostat and I am not sure about the wiring. I have 4 wires coming from the wall that according to my manual for the old thermostat are blue 12v, yellow GND, red D-, white D+.

The Ds are Data communication lines.

So can this not work with the nest product?

Thanks

Re: Thermostat wiring

EdmondB — Fri, 01 Dec 2023 00:57:04 GMT

Hello Larry23,

Thanks for posting here in the Community. Based on the label of the wires from your current thermostat, your system is a Proprietary. This is not compatible with any type Nest Thermostat.

Check out this link for Nest thermostat compatibility. Let me know if you have more questions.

Thanks,
Edmond

topic Re: Thermostat wiring in Home Automation

Thermostat wiring

Re: Thermostat wiring