Nest learning thermostat error code e72

[lofton]

I’m getting error code e72, have checked the power connection and all is good. Filter is dirty but now bad. What to do?

[Ryan_G]

Hi lofton,

Thanks for reaching out here in the community.

The E72 message on your Nest thermostat means it is not getting any power to function. This could possibly be an issue with the power from the HVAC not flowing to the thermostat. Also, check the wire at the terminal of your thermostat.

You could also check the fuse from your system.

Let me know how it goes by replying to this thread.

Best regards,

Ryan

[Ryan_G]

Hey lofton,

I just wanted to follow up and see if you're still in need of help. Please let us know as we would be happy to answer any questions you may have. 

Best regards,

Ryan

[aatienza]

Hey lofton,

Chiming in to check if you have additional questions or concerns as we will be locking this thread within 24 hours. 

Let us know so we can assist you right away.

Thanks,

Archie

[NorthStar]

I am having this same problem