Hi Mark,
My 2 Nests are the newest generation of learning thermostats and were installed by Geek Squad. In the apps it showed I had turned off learning and schedules for both units.
I had both upstairs and downstairs units on the “heat/cool” setting.
The one downstairs was turning on the Cooling every evening, so it was evidently using a schedule. I checked the apps and they said schedule was off.
At Thanksgiving I had my techie son-in-law completely uninstall and reinstall both of the thermostats. I was frustrated and just wanted a fresh start with both of them! We did not set either of them to learn or schedule.
After the reinstall the downstairs unit continued to switch to cooling, seemingly on a schedule, so I finally just changed the setting to “heat” so it wouldn’t cool anymore. I did not reset it.
After the reinstall I also changed the Upstairs from “heat/cool” to “heat”. At that point it started to change temperature on its own….evidently running the heat (electric heat pump) up to 79 degrees for 14 hours per day while we were gone for the Christmas holiday. I had been checking my Google Home app while gone, but just saw the dashboard and it showed a normal number, so I didn’t click on it to see what was actually happening.
When we got home and I went upstairs to find the heat at 79 I went back into both the Nest and Google Home apps and also the thermostat to make sure learning and schedules were off, and they seemed to be. Yet, the upstairs thermostat still kept turning back up to 79. I finally reset that upstairs thermostat again last weekend and since that reset it has held a steady temperature.
