Heat link

[Nick12]

Heating been working great for 18 months . Today heat link not working/ connecting,  no lights on link and showing H71 error..

No issue with power supply......???

Nick

[AlexD]

Thank you for the information @Nick12 . I would be happy to try and assist. If you have not already, check the breakers and switches at the location, to make sure nothing has tripped. Also check the boiler as it can sometimes have a separate switch on it. Confirm it has power, it should have a display or LED that turns on.

If it all looks good try and power cycle the Heat Link, if you're comfortable in doing so. Turn the power to the Heat Link off for a few minutes and then turn it back on. See if it has any reaction after when you press the button on it.

[Nick12]

Hi Alex

Sorry for delay in replying,  what is power cycling? .

I have turned power on off a number of times but nothing.  Unit definitely has power to it and boiler has no issue with it 

[DragosC]

Power cycling would assume to turn the power off, leave it for 10 minutes, then turn it back on. 

[Nick12]

Umm already tried that , a number of times. Still nothing....

[DragosC]

Understood, thank you. Please answer to the following questions:

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?

[AlexD]

Hi, I wanted to check in. Do you need any further assistance? If so, make sure to let me know.

[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!