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E79 no power on my thermostat

Halbrand
Community Member

My threads got locked before I saw the replies. I need help in getting this resolved. My thermostat kept showing E79, there are times that it's cleared and I can control my heat, this is when I charge the display manually for at least 15 minutes. Any info why am I getting this?

3 REPLIES 3

Jhonleanmel
Community Specialist
Community Specialist

Hi Halbrand,

 

E79 means that there is no power to C wire detected. To troubleshoot this, check this link.

 

Keep us posted,

 

Best,
Mel

EdwardT
Community Specialist
Community Specialist

Hi Halbrand,

 

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.
 

Thanks,

Edward

 

 

EdwardT
Community Specialist
Community Specialist

Hi Halbrand,

 

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

 

Thanks,

Edward