Heat link not working - no power

[villarosie]

My Nest heat link (3rd Gen) has suddenly stopped working. It's totally dead. There has been no work on the boiler recently. It sounds like this is a common problem with these units. I can't get anything out of Google to order a replacement. Is there anyone on here from Google who can assist me please?

Many thanks

[DragosC]

Hi there, @villarosie

Thanks for letting us know.

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?
 

[DragosC]

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