NEST error e74 no power - SOLUTION

[JF2968]

https://mashtips.com/fix-no-power-to-rh-wire-on-nest-thermostat/ 

Copy & paste link above in a browser. THIS ACTUALLY WORKED!! 

We tried this solution and it actually worked! Just a small amount of water pooled in the HVAC Float Switch. Drained it and air conditioner is now working. 

Check HVAC Float Switch

The condensate overflow switch located near the Air Handler unit, inside your home. This is to protect your home from possible water overflow from the HVAC unit. If your drainage pipe is not clean, or if there has any clog, the overflow switch will disconnect the power and turn off the AC.

[Jeran]

Hey there JF2968,

Thank you for posting this solution! I know I've seen this error floating around, so hopefully it helps other users as well! I leave this thread open for a few days in case anyone wants to comment on this.

Best regards,
Jeran
 

[EdwardT]

Hi JF2968,

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]

Hi JF2968,

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