Heat Link 3rd Gen Dead

[McKenna32]

Heat Link 3rd Gen has 240V power at its terminals but is not turning on. It has been working until today but now will not reset or show any sign of life. Support lines (https://support.google.com/googlenest/gethelp) claim to be within hours but I cannot ask for a call or chat as I'm subsequently advised it is out of hours. Please advise ASAP as we have no heating or hot water with two small children. 

@CristianC I see you have been quite active on these issues, I would appreciate your input here please? Thanks

Identical issue to many prior posts. https://www.googlenestcommunity.com/t5/Nest-Thermostats/Heat-Link-dead-3rd-gen/m-p/5742 is a good example of what is happening here

[AnaM]

Hey @McKenna32,

I'm sorry to hear about your issue, but I'd like to help you 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. 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?
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 have to lock this thread. Feel free to open a new one if you still need asssitance.