topic Re: H1 error every single year from past 3 years in Nest Thermostats

H1 error every single year from past 3 years

Pepper0ni — Fri, 27 Dec 2024 23:55:09 GMT

Every single winter I face the same issue with H1 error on my 2nd generation heat link.
I have 2 heat links at home - one for each floor. The 3rd generation runs all good without any issues. It’s the 2nd generation one which always has problems.
Tried all the fixes - when I reset pairing ( after alternating orange and green light), it connects for literally 2 mins with the thermostat and gives the H1 error again. Last year I was resetting the heat link manually almost every day.
Getting very frustrated with this - would I have to replace the heat link to a newer model?

Re: H1 error every single year from past 3 years

Frustratedddd — Sat, 28 Dec 2024 15:56:04 GMT

Unusual this situation as the 2nd Gen are bullet proof, and the 3rd Gen have issues.

Have you ever done a full factory reset?

Re: H1 error every single year from past 3 years

Jeremyg — Tue, 31 Dec 2024 06:59:19 GMT

Hi folks!

@Frustratedddd thanks for your assistance.

@Pepper0ni thanks for reaching out to the community. I am sorry to hear that your Nest Thermostat 2nd generation has the H1 error code, but no need to worry; help is here. We appreciate all of your previous troubleshooting efforts. Before continuing, I need to know a few things:

How is the Heat Link being powered when you're trying to pair it?
Did you try to take the Heat Link out of Manual Mode?
When was the thermostat installed?
Is this a replacement thermostat display?
Has there been any recent work done on your heating system?

I'll be waiting for your response; any additional details you can provide will be helpful.

Best regards,
Jeremy.