01-14-2024 04:32 PM
We had a power outage and the Google Nest thermostat now says there is an E79 power issue. The wiring didn't change and no breakers were tripped and there isn't even an obvious way to factory reset the device. Is this thing really as horrible as it seems?
01-18-2024 11:48 AM
Hi fcarlson,
Thanks for reaching out. I'm sorry for the trouble this may have caused you. You'll see this code if your thermostat doesn't detect power to a wire, or it can't detect the wires in your thermostat.
Try the troubleshooting steps here:
1. Check the system power
First, make sure the power to your system is on. The power switch will usually be in your breaker box or fuse box, but in some homes it will look like a light switch near the heating or cooling equipment.
2. Check the thermostat wire
Important: Protect yourself and your thermostat and your system. Turn off power to your system and thermostat at the breaker or fuse box before exposing or adjusting any wiring.
Please let me know how it goes.
Best,
Jenelyn