Google Nest Community

I found the best way to get the ball rolling was to actually call support on the phone. They did refer back to this forum post afterwards too.

I spoke to support for about a week. I sent them photos and videos detailing every step. I then got asked to do so again, so I fixed the issue by popping the nest in the bin and installing a competitor system.

I want to pop on and state that I have exactly the same issue. Nest E was flawless for years, started disconnecting with the same error code a couple of weeks ago. First tried resetting the heating link, which worked for a like while, then disconnect...