topic Re: Fault in Nest Thermostats

Fault

Gaz9697 — Sat, 05 Mar 2022 22:42:26 GMT

Like many others my heatlink has failed. The unit is 18 months old . The information says that they should be replaced every 10 years, but Im no where near that.

I have turned off the boiler and restarted.

I have held heat link button in to reset. But there are no LED lights displaying. The unit still displays H71 FAULT. My reseach shows a common power failing in the heatlink. How do I go about replacement or getting it fixed?

Many thanks

Re: Fault

DragosC — Tue, 08 Mar 2022 12:20:09 GMT

Thanks for letting us know @Gaz9697

Could you tell me please when did the situation start occurring first and when was the thermostat installed?

Also, please answer to the following questions:

Are there any lights on the Heat Link? Does the boiler activate when calling for heat by pressing the Heat Link's button to activate Manual Mode?
Are you seeing any wiring report or error on the thermostat and/or the app?
Have you had any recent power cuts in your area? If yes, has the power been restored?
Have you recently had service or maintenance on your electrical, plumbing, or heating system?
If yes, how long was the power off for? (Be specific.)
Could you tell us please if you've checked on the breaker switch and fuse box?
Any blown fuse in there? Have you tried to turn the breaker switch off and on again? Any difference?

Re: Fault

DragosC — Thu, 10 Mar 2022 12:26:00 GMT

Hi there. I'm just following up on our last message. Do you still need our help? Keep us posted.

Re: Fault

AlexD — Sat, 12 Mar 2022 15:40:38 GMT

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, AlexD.