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Nest 3rd Generation Heat Link has died!

Azz1951
Community Member

Can so,won’t help me with my 3rd Generation Heat Link my heat link which has just died! There is a working power supply but no lights on. I have tried pressing the button for 10 and 20 seconds but nothing has worked. I connected a power pack into the micro usb connector and lights came on. I believe this a problem with the circuit board which is well known. Can you please can you let me know what I need to do to get a replacement,

5 REPLIES 5

DragosC
Community Specialist
Community Specialist

Thanks for letting us know , @Azz1951

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 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?

Azz1951
Community Member
The Heat Link stopped working yesterday 23/06 and the thermostat was installed in Dec 2020
There are no lights on the Heat Link. I tried to reset it by pressing the button for 10 secs but nothing happens. 
Pressing button on Heat Link does not activate boiler
Error message on thermostat H71 can’t connect to heat link
No power cuts in my area
Boiler was serviced in 10/21 and was working fine
Electrical breakers are fine

DragosC
Community Specialist
Community Specialist

Thank you. I've sent you an email. Please follow the instructions from it and let me know here when you've done it. 

Azz1951
Community Member

Email reply sent

DragosC
Community Specialist
Community Specialist

Thank you so much for helping us diagnose this issue. From this point on, we'll set up a replacement for your unit. It looks like your area is covered by our installation partner BOXT, who offer next day installation services. We can send you the information required to book your replacement device with them; please note that choosing this option will require a credit or debit card only as part of the booking process, but no charge will be applied. Please check your email for more details.