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Heat link dead, getting h72 error

Community Member

Had nest installed for just over 2 years now and for no reason, the heat link is dead. Best device says h72 error. How can I get a replacement please?

Thanks in advance

David Price


Community Specialist
Community Specialist

HI there @DavePrice! I'm really sorry to hear that you encountered this issue, but I'll do my best to sort this our quickly. Can you please respond to the following set of steps and confirm the steps at the end?

Have you recently had service or maintenance on your electrical, plumbing, or heating system?
Have you tried any troubleshooting steps before contacting us?
How many zones are present in your setup?
Were there any power outages lately?

Check for all the breaker switches to be on.
Turn the breaker switches off and then on again.
Turn on manual mode. (press on the button of the Heat Link)

Community Specialist
Community Specialist

Hi, I wanted to check in. Did you see my colleague's message? Make sure to keep us posted here. 

Community Specialist
Community Specialist

Should anything else come up, please message us again and we'll take it from there. Have a good one and stay safe!