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Broken heatlink h72

Community Member

H72 nest error... I have a nest learning thermostat installed November 2019 and has suddenly stopped suppling power to the thermostat from looking in this community I see that it's a common problem with the heat link. I've had an electrician check wiring and fuses. Heat link has no lights but is has  power to it as checked by electrician.

How do I resolve this issue.

I have no recent power cuts and no internal house done recently.



Community Specialist
Community Specialist

Hi Renbriar,


Thanks for reaching out. I'm sorry for the delay. A few questions: what type of Nest Thermostat do you have? You can visit this link to check what type of thermostat you have. Also, in what states are you located?




No worries now for this, I've had things changed by BOXT after following an email from google to change the heat link.

Service was brilliant so many thanks for your reply

Community Specialist
Community Specialist

That's great to hear. Please let me know if there's anything else I can assist you with. 


Community Specialist
Community Specialist

Hi there, just checking in! Did you see the message from my colleague? Many thanks, Larisa

Community Specialist
Community Specialist

Hey there, I haven't heard from you in a while so I'll be locking this thread. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community. Thanks, Oana.