topic Re: Nest learning thermostat heat link dead in Nest Thermostats

Nest learning thermostat heat link dead

husseinfatal — Tue, 28 Sep 2021 20:12:36 GMT

My heat link for my nest learning thermostat has died no lights to restart at all. Had the product 1.5 years and no recent electric or boiler work. No power cuts and all house circuits working and on as normal. Just seem to die. Have an h71 error on the thermostat itself.

Need Google to reach out to advise and help.

Re: Nest learning thermostat heat link dead

AlexD — Thu, 30 Sep 2021 14:37:42 GMT

Hi @husseinfatal , I would be happy to try and assist you.

If you have not already make sure to check all breakers and switches, to make sure nothing has tripped. Also check and 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 after when you press the button on it.

Best regards,

AlexD

Re: Nest learning thermostat heat link dead

husseinfatal — Thu, 30 Sep 2021 15:08:30 GMT

Hi thanks for the reply!

Nothing has tripped and boiler is all ok working normally.

Whats the USB on the heat link for? I plugged that into a power outlet and a green light came on after a few mins.....and it conets to my thermostat - but it wont set the heating.

As soon as i remove the USB the power goes ut again and nothing.

What is the USB for?

Re: Nest learning thermostat heat link dead

AlexD — Thu, 30 Sep 2021 15:15:36 GMT

The USB port is for the engineering team. They can check information on the Heat Link by connecting to it. While it may turn on the LED lights on the Heat Link it is not designed to power it, as it requires the high voltage from N/L to control the system.

When power cycling the Heat Link make sure the USB is not connected.

Also let us check a few more things:

1. Was it originally installed by a Nest Pro or a heating/electrical engineer?

2. When did you first notice this behavior from the thermostat?

3. Do you only have one Google Nest thermostat at the location or multiple?

Re: Nest learning thermostat heat link dead

husseinfatal — Thu, 30 Sep 2021 15:21:59 GMT

Hi,

Was installed by a qualified electrician.

Its summer so i didnt notice it until yesterday when i thought about heating again - so no lidea how long its been out for.

I have one heat link - and one thermostat in a place suitable and been working with no issues

Re: Nest learning thermostat heat link dead

AlexD — Thu, 30 Sep 2021 15:34:40 GMT

Thank you for all the provided information.

I'd like to investigate this further please fill out this form so I can gather your details securely, and let me know once you've done it https://bit.ly/3oVDg4g . Make sure to include the display serial starting with 09A, the email associated with your Nest account and your full post address. Also make sure to include your user name in the "Social handle" field. Once you let me know it has been filled out I will look for your user names amongst the forms.

Alternatively if you feel more comfortable you can get in touch with my colleagues from support directly using the information in this link: https://bit.ly/3kIfrO5 under the "Contact us" section.

Re: Nest learning thermostat heat link dead

husseinfatal — Thu, 30 Sep 2021 15:51:39 GMT

Ok have fill out the form in first link.

Re: Nest learning thermostat heat link dead

AlexD — Thu, 30 Sep 2021 15:59:23 GMT

Thanks. I found it. I will reach out to you over email as soon as possible.

Re: Nest learning thermostat heat link dead

husseinfatal — Sat, 02 Oct 2021 11:39:10 GMT

Thanks Alex hope to hear from you soon.

Re: Nest learning thermostat heat link dead

AlexD — Sat, 02 Oct 2021 11:44:55 GMT

I just sent you an email @husseinfatal , check to see if you received. Looking forward to your reply.

Re: Nest learning thermostat heat link dead

husseinfatal — Sat, 02 Oct 2021 12:24:17 GMT

Thanks now replied

Re: Nest learning thermostat heat link dead

AlexD — Sat, 02 Oct 2021 12:31:44 GMT

Thanks for letting me know @husseinfatal . I will soon be in touch over email with further info.