Heat link

[David61]

 Heat links has suddenly stopped working. There are no lights on it. It was working fine, not changed any of our wiring. 

Just getting error H71 on the thermostat and can not link, the unit is well over a year old but have another set up and that’s older but working fine.

I have not done any resetting because the heat link has not lights on any help welcome. 
David. 

[DragosC]

Thanks for letting us know  @David61

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

Also, please answer 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 message 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?
 

[AlexD]

Hi, I wanted to check in. Do you still need assistance? If so, let me know

[george_t]

Hi @David61. Is there anything else we can assist you with at the moment?

[DragosC]

Since I haven't heard from you in a while, I'll have to close this thread. Should anything else come up, please open another thread and we'll take it from there. Have a good one and stay safe!