I do have a C cable connected to the thermostat. It worked fine for 4
years until it didn’t. I first noticed intermittent failures to run and
the G logo after a 4 hour power outage. Then it worked on and off for a
week or so. I also tested all of the...
Having the same issue. Pushing it for 10 seconds reboots it, I get a G
logo then blank again. And it constantly tries to reboot itself. Just
spend 30 mins with tech support, they said it’s the battery but it’s not
replaceable. Thermostat is past warr...