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Haystack
Community Member
since ‎08-31-2022
‎09-08-2022

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  • 2 Posts
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User Activity

Google Nest 3rd Gen Learning Heat Link Failed

08-31-2022
The thermostat is showing a H72 error message. The heat link has lost all power, will not reset or turn on. There is power to the switch as it also powers the boiler, which works fine (manually). The thermostat loses power on its base after a short p...