C Wire Error

[Kminga1]

Hi,

My cooling system has been working fine and suddenly I am getting an error message (N261). Is this a true HVAC system error that needs an HVAC tech or is there a communication error with the Nest thermostat itself that can be fixed? Thanks

[MelbaDT]

Hey Kminga1, 

Thanks for reaching out and sorry to hear about your Nest thermostat. I want to dig deeper into this. 

A few questions — what specific Nest thermostat do you have? How is it wired? Does it have a C wire?

N261 means either one of the  following reasons below:

• The C wire isn’t providing enough power to your thermostat.
• Your thermostat might need a C wire or the Nest Power Connector to provide it with dedicated power.
• If you're installing the Nest Power Connector and you get an E297 help code, your thermostat needs an update. On the thermostat screen, select Settings > Software > Update.
• If you have already installed the Nest Power Connector, you might need to update the wiring info in the app.

Check this link for more suggested steps: https://bit.ly/3yDIc5y

Best, 

Melba

[MelbaDT]

Hey there, 

Checking back in — how's your thermostat now? Still need our help?

Best, 

Melba

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the Community.

Best, 

Melba