Hi, Nest thermostat come up with an error H71. I’ve checked the heat link and it seems to be dead, no light at all. There’s power going to it and my boiler, and there is hot water but no heating. I’ve tried resetting and restarting it, switch off power for few minutes and still nothing. Nest has been installed along with a new boiler just under a year ago. Please advise.
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I've contacted Google via Twitter and got quick response, however then been referred to senior management team to review and possible replacement. However, 7 hours since last contact, all quiet and house is getting cold, not ideal with 2 kids .
The link below might be useful for some, my boiler is OpenTherm and wired differently though