H71

[Folk22]

Hi, Nest thermostat come up with an error H71. I’ve checked the heat link and it seems to be dead, no light at all. There’s power going to it and my boiler, and there is hot water but no heating. I’ve tried resetting and restarting it, switch off power for few minutes and still nothing. Please advise.

[george_t]

Hi @Folk22,

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?
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?
How many thermostats do you have?
 

[DragosC]

Hi there. I'm just following up on our last message. Do you still need our help? Keep us posted. 
 

[AndaD]

Hey there again, 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 assist you.