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Heat link dead (H71 Error)

Community Member

Hi my heat link has completely stopped working yesterday. It's completely dead, no lights on or anything. All breakers are on. This was installed through Electric Ireland in October 2021. How do I organise a replacement ASAP? 


Community Specialist
Community Specialist

Hi there! I'm really sorry to hear about this but I'll do my best to assist you. Could you please respond to the following questions and try the steps at the end?


What type of Nest Thermostat do you have?
Are you seeing any wiring report or error on the thermostat and/or the app?
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? Meaning how many thermostats you have.
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 by pressing the button in the middle of the Heat Link.

Community Specialist
Community Specialist

Hello there! Just checking in with you. Did you see my colleague's previous message?

Community Specialist
Community Specialist

Hi there! Since you haven't replied in a while I'll need to close this thread. If anything else comes up, please feel free to reach out again. Have a wonderful day ahead!