topic No heat with New Nest (I Had a Nest e) in Nest Thermostats

No heat with New Nest (I Had a Nest e)

BrianHarris — Sat, 06 Nov 2021 20:22:29 GMT

PG&E sent me a new Nest as part of their energy saving program. I kept the OLD "wiring harness" (from my old Nest E). Should the two harnesses be compatible with BOTH Nest and Nest E? The furnace works fine with my ancient thermostat by the way

Brian

wiring: white is w blue is w2 red is r green is o/b yellow is y

Re: No heat with New Nest (I Had a Nest e)

Ashepherdson — Sun, 07 Nov 2021 00:43:15 GMT

You would need to use the new harness that came with your new nest thermostat, there are slight differences with each generation and they are not interchangeable.

Re: No heat with New Nest (I Had a Nest e)

GarrettDS — Wed, 10 Nov 2021 21:54:06 GMT

Hey there,
Just wanted to jump in here to check to make sure that you saw the response from Ashepherdson. Shoutout and huge thank you to Ashepherdson for the help here. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Have a great day.
Garrett DS

Re: No heat with New Nest (I Had a Nest e)

GarrettDS — Thu, 11 Nov 2021 16:39:19 GMT

Hey folks,
It looks like we haven't heard back from the OP so I'm going to go ahead and lock the thread. If you have any further questions or concerns, feel free to create a new thread.

Have a great day,
Garrett DS