3rd Generation Nest Heat Link No Longer Working

[dicksboogie]

2 years ago we had a Worcester Bosch installed by Boxt.  As part of the installation they supplied and fitted a 3rd generation Nest thermostat and heat link.  Last night it became clear that we had a problem with the heat link.  Although power is getting to the unit (proved through continuity test) the unit is showing no signs of life (no lights, no response to button being pressed etc).  After reading up on the Web it would seem that this is a common problem with these units.  As the heat link is the only way to turn the heating on with our boiler we are currently without central heating.  How do I get a replacement heat link asap so we can get this problem sorted and the heating back on?

[AnaM]

Hey @dicksboogie,

Thanks for reaching out to us. I'm sorry to hear about your issue, but I'll help you sort this out.

Please answer the following questions:

1. What type of Nest thermostat do you have?
2. When was it installed?
3. Did the issue happen during installation or after installation? Was it installed by a Nest Pro or by a regular installer?
4. Does the boiler activate when calling for heat by pressing the Heat Link's button to activate Manual Mode?
5. Are you seeing any wiring report or error on the thermostat and/or the app?
6. Have you had any recent power cuts in your area? If yes, has the power been restored?
7. Have you recently had service or maintenance on your electrical, plumbing, or heating system?
8. Have you tried any troubleshooting steps before contacting us?

If you have not already make sure to double check all breakers and switches to make sure nothing has tripped. Also check the boiler as it can have a separate isolation switch sometimes. Confirm the boiler has power, it should have a LED or display 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 off to the Heat Link for a few minutes and then turn it back on. See if it has any reaction when you press the button on it after.

[AlexD]

Hi, I wanted to check in.

Do you need any further assistance? If so, make sure to let me know. 

[AnaM]

Hey there,

Since we haven't heard from you yet, I'll close this thread. If you need any further assistance, feel free to open a new one.