topic Re: How to install 7 wire old thermostat to Nest 6 pin in Nest Thermostats

How to install 7 wire old thermostat to Nest 6 pin

JH123 — Wed, 30 Nov 2022 20:16:52 GMT

Re: How to install 7 wire old thermostat to Nest 6 pin

sporfrog — Thu, 01 Dec 2022 01:53:44 GMT

Technically speaking, assuming all the wires in the photo have a function and are connected at the HVAC end, the "Nest Thermostat" is not compatible with your system. You might be able to just not use one wire and therefore not have a function like emergency or auxiliary heat. That's not ideal and not recommended.

You can check at the HVAC unit where the thermostat wire ultimately goes just to be sure each of the colored wires is connected to a terminal.

It appears you have a Heat Pump, but the thermostat also supports "conventional" like a gas furnace. Do you know which you have?

Re: How to install 7 wire old thermostat to Nest 6 pin

Markjosephp — Tue, 06 Dec 2022 14:17:55 GMT

Hello folks,

I wanted to stop by and see how I could help.

Thanks for helping here on this thread, @sporfrog.

@JH123, It appears that your system would only be compatible with the Nest Learning Thermostat, which has a specific terminal for emergency heat. You can also check your system’s compatibility with our online Compatibility Checker.

Please let us know if you have any other questions or concerns.

Best regards,

Mark

Re: How to install 7 wire old thermostat to Nest 6 pin

EmersonB — Fri, 09 Dec 2022 14:29:13 GMT

Hi everyone,

@JH123 I'm dropping by to ensure that everything is covered here. Were you able to check the link shared above? Let us know if you have more questions in mind.

I appreciate the help, Mark and sporfrog.

Regards,
Emerson

Re: How to install 7 wire old thermostat to Nest 6 pin

Markjosephp — Mon, 12 Dec 2022 14:22:08 GMT

Hi JH123,

I'm checking in to make sure that you've seen our response. If you have any further questions or concerns, please let us know before we lock this thread in 24 hours.

Thanks,

Mark