topic Re: e79 common wire connected but no power in Nest Thermostats

e79 common wire connected but no power

alan19 — Thu, 07 Oct 2021 20:41:07 GMT

I'm getting e79 error which is indicating no power detected on common wire, however multimeter measurements show 26v from Red -> Common so power seems ok. Any ideas how to debug further?

Re: e79 common wire connected but no power

Jake — Fri, 05 Nov 2021 18:20:11 GMT

Hey alan19,

Sorry for the late reply. I wanted to follow up and ensure you are good to go. Please let me know if you still have any trouble from here, as I would be happy to take a closer look and assist you further.

Best regards,
Jake

Re: e79 common wire connected but no power

alan19 — Fri, 05 Nov 2021 18:38:01 GMT

Thanks for your reply this problem has already been solved.

Re: e79 common wire connected but no power

Jake — Fri, 05 Nov 2021 21:06:34 GMT

Hey alan19,

Glad to hear you were able to resolve the issue. With that being the case, I will be locking the thread at this time. If you run into any questions, please feel free to create a new post at any time.

Best regards,

Jake