Heat Link dead with no lights

[DocClog]

Hi there,

Can anyone help me please? My Heat Link (about 2 years old) is dead with no lights at all.

I have tried everything in the instructions/chats but nothing changes the H71 or the lack of lights on the heat Link.

It's cold and I have a sick spouse at home. I really need to put on some heating.

It's a 3rd gen Nest (3.4).

No recent work in the house, no WiFi issues, all fuse present and correct (on).

Short of buying a while new system, what can I do?

Many thanks

Doc

[kirk-467]

That sounds really stressful, especially with cold weather and a sick spouse. Since your Heat Link shows no lights at all, you can try a few things before considering a full replacement. First, check the power supply to make sure the Heat Link is receiving the correct voltage, as fuses in the boiler or spur socket can sometimes appear fine but still be faulty. You could also try plugging it into a different socket or power source. Next, attempt a reset by holding the reset button for 10–15 seconds and then reconnecting. Finally, inspect the wiring for any loose or corroded connections that might prevent the unit from powering on. If none of these steps work, contacting Nest support for further assistance or a possible replacement is recommended.

[moralesvicente]

Hello @DocClog, 

Thank you for posting in this community. I’m sorry to hear that the Heat Link for your Nest Learning Thermostat (3rd gen) is showing error code H71 and has no lights. I appreciate your efforts to try to solve this situation, especially given the importance of heating for your spouse. No worries; I’m here to help. 

To expedite assistance, the team would like to learn more about this behavior. When you get a chance, please fill out this form and let us know when you’re finished. We’ll have someone reach out to you via email from there. 

Thank you for your collaboration in this forum @kirk-467.  

Best regards, 

Daniel

[DocClog · Accepted solution]

Hi,

It's actually all sorted now. I contacted Google's customer services. It's a known fult with a diode in the HEat Link and they arranged for an engineer to come out and replace the Heat Link in less than 24 hours! Phenominal service. 
Great thanks to the engineer Chad from Boxt who replaced the Heat Link, and reconnected to our nest and had our heating back up and running in under an hour.

See, you can get great service. 

[moralesvicente]

Hey @DocClog, 

Thank you for letting me know! It's great to hear that your Heat Link is working as you expected and that you had a positive experience with the support you received to fix the issue.

If you experience any trouble, please don't hesitate to contact us. We would be more than happy to assist you.

Regards,

Daniel