Heat link 3rd Gen dead

[rgaila]

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Original Poster: Chris Mccabe  

I have a 3rd generation nest thermostat kit. Noticed an H71 error and checked the heat link to find no lights on. Tried to reset and nothing. Power going to heat link and boiler. Tried turning power off to boiler and on again and still nothing. Essentially the heat link is dead. Any help or recommendations would be appreciated? Pretty poor for it to do this and not an uncommon problem it seems.

[rgaila]

Hi Chris,

Thanks for reaching out. Let's check a few things:

• What type of Nest thermostat do you have?
• When was it installed?
• Did the issue happen during installation or after installation?
• Are there any lights on the Heat Link? Does the boiler activate when calling for heat by pressing 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, document the answer to the following questions.
• How long ago was the latest power cut?
• How often do these power cuts occur?
• How long was the power off for? (Be specific.) Do you get an error after each power cut?
• Has the thermostat been on since this power cut?
• Have you recently had service or maintenance on your electrical, plumbing, or heating system?
• If yes, how long was the power off for? (Be specific.)
• Have you tried any troubleshooting steps before contacting us?

Let me know so I can properly help you.

-From Andrea C. Community Specialist.