3rd gen nest e code e 74

[Grump1]

I have a 3rd gen nest for about 5 years. 1 year ago replaced heater and a/c system, had it serviced a couple days ago. It was working perfectly. Turned it on for a cold spell and started getting an e74 code . No power to the white wire. I turn on heater and it runs for 5 min then I get the code , I raise the temp 1 degree it goes on and again 5 mins the thing shuts down. And the e code shows up again. Any suggestions? 

[Anonymous]

Can you check this link here because there are some instructions regarding E74 error code: https://support.google.com/googlenest/answer/9235307

[EdwardT]

Hi folks,

@Anonymous, thanks for the help!

@Grump1, how's it going with your Nest Thermostat? Were you able to check the link that eveluna provided? Let us know if you have questions and we'd be glad to assist you.

Thanks,

Edward

[EdwardT]

Hi Grump1,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do.

Thanks,

Edward

[EmersonB]

Hi everyone,

@Grump1 just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.

I appreciate the help, Edward and eveluna.

Regards,
Emerson