04-23-2022 11:49 PM
Hi, system does not seem to be cooling the house. System worked fine with previous thermostat but since installing nest, the air being blown out doesn’t seem cool and my system ran for 4 straight hours and the temp didn’t change at all. Seems like maybe the fan is running but not cooling. I am getting a “N261” alert.
04-24-2022 05:29 PM
Post a picture of the original thermostat's wiring here.
The N261 error means the Nest is sensing low power on the C wire. This is normally caused by not having a C wire installed or it's not connected to the furnace/air handler.
These steps cover the following help codes: E1, E297, N261, N260
You might see this help code for one of the reasons below:
Home app
04-24-2022 06:49 PM
Here is the original wiring and then the nest wiring. The C wire is connected in both. I reinstalled the old thermostat to see if the compressor would kick back on and it did. So nothing wrong with the wire connection it seems but instead for some reason the issue seems to be with nest device.
04-24-2022 06:52 PM
Sorry, I failed to mention, that I found out that with the nest thermostat installed, the compressor wouldn’t kick on, and therefore wasn’t actually cooling. But with the old thermostat, the compressor kicks on and works fine. And both had the c wire connected
04-25-2022 04:10 PM
Everything appears to be wired correctly.
Did your old thermostat happen to have batteries installed?
I would look at the terminal block on the control board in the furnace/air handler and verify that everything is connected there like it is at the thermostat.
C wires are mostly just used to power the thermostat when the thermostat is the programmable type and if there is no C wire, they use batteries.
04-26-2022 05:37 AM
Hi cRyan10,
Thanks for reaching out and we're sorry for the delay.
I'd like to jump in here and check if you've seen Patrick_Caezza's response. We'd love to hear from you to know more details for us to further help you.
Thanks for always helping us, Patrick_Caezza.
Best regards,
Ryan
06-06-2022 11:39 AM
Hey folks,
Thanks for visiting the Google Nest Community.
Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.
If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand.
Hope this helps!
Kind regards,
Ryan