Nest thermostat showing e299.

[billragz]

Installed a nest thermostat a few months ago after my learning thermostat died.  Was workign fine and set shcedule and such.  Went to adjust and home app says Wiring Error / E299: Wiring Error (C-wire is broken).    Thermostat iteslf says Equipment error g.co/nest/e299.  AC is still working according to schedule.

[Markjosephp]

Hello billragz,

Thank you for taking the time to let us know about your inquiry. I'd be happy to take a look at this for you.

This is more likely a compatibility or power-related issue that you're experiencing. To better check this, please share with us your old thermostat and the Nest Thermostat's wiring setup. Gather the make and model of your HVAC system. Also, can you still go through its settings? If so, check the Power Info and Wiring Info in the Equipment Settings.

I'll look forward to your response.

Regards,
Mark

[Markjosephp]

Hey there,

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,

Mark

[Jenelyn_O]

Hi billragz,

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'll be locking this thread in 24 hours.

I appreciate your help, Mark.

Best,

Jenelyn

[billragz]

Reset fixed it.  Going good for about a week now.

[Jenelyn_O]

Hey billragz,

Cool, I'm glad to hear that. Please feel free to create a new thread if anything comes up, as we'll be willing to assist you from there. Please be advised that I'll be locking this thread after 24 hours.

Cheers,

Jenelyn