There is currently a power outage in my area and everything I have read so far says that the thermostat should still work, but I can't manually set the temperature. I just get a E195 error which means no power, which makes sense. My wire layout is just R and W, no C. Should I still be able to use the thermostat?
Thanks for reaching out. I'm sorry for the delay. The Nest Thermostat E has a built-in battery. If the wires weren't able to provide power to your thermostat it will use its built in battery to run your system temporarily. If the battery is drained, it will lead your thermostat to shut down.
Gotcha. Nest Thermostat will still give you the screen, but it will not allow you to change the temperature or have access to your Settings since there's no power coming from your HVAC system due to power outage. The Nest Thermostat will only allow you to control it once the power comes back.
@_David_, we wanted to follow up and see if you are still in need of any help. Please let us know if you are still having any concerns or questions from here, as we would be happy to take a closer look and assist you further.
I appreciate the help, Jenelyn.