topic Re: Nest decice died in Nest Thermostats

Nest heat link died

Nestuserireland — Tue, 15 Nov 2022 21:21:26 GMT

My heatlink died. I searched this issue online and it appears many others have faced similar issues with the diode in the main PSU. I am based in Ireland and want to know how to get this fixed.

Re: Nest decice died

george_t — Fri, 25 Nov 2022 11:31:50 GMT

Hi @Nestuserireland, thanks for reaching out. I'm sorry to hear you're experiencing this issue, but we'll sort this out together. Let's start with a few questions:

What type of Nest thermostat do you have?
Did the issue happen during installation or after installation? Was it installed by a Nest Pro or by a regular installer?
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?
Have you tried any troubleshooting steps before contacting us?
How many thermostats do you have?

Re: Nest heat link died

Nestuserireland — Fri, 25 Nov 2022 21:57:36 GMT

Hi George,

I kept my old heating controller and installed this in place of the nest and it works perfectly. I think this rules out most of the issues you appear to be checking.

Regarding some your questions above, my nest was installed by a professional from electric Ireland (an electricy company based in Ireland). There were no lights on the heatlink and it did not respond when I clicked on the button. My boiler works perfectly with the old heating controller, so I think it is fairly obvious that the heatlink has died. Based on research, it looks like this is a common issue with the diode in the main PSU.

Reliability is very important when it comes to heating for obvious reasons. I paid good money for my nest and feel like it may have been a waste of money. It seems to be hard to get the issue fixed, even when I have clearly outlined the most likely issue.

Re: Nest heat link died

DragosC — Sat, 26 Nov 2022 08:40:25 GMT

Thanks for letting us know @Nestuserireland. I've sent you an email. Please follow the instructions from it and let me know when you've done it.

Re: Nest heat link died

AlexD — Mon, 28 Nov 2022 09:56:04 GMT

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

Re: Nest heat link died

george_t — Fri, 02 Dec 2022 13:09:03 GMT

It's been a while since this thread was last updated so I'll go ahead and lock this thread. If you're still experiencing issues, please feel free to start a new thread and we'll be happy to help.