Nest Thermostat Turns On--Don't know why!

[rmruby]

My house has two Nest Learning thermostats, one for upstairs, one for downstairs. Every night at 11:00pm the downstairs heater comes on, at 77 degrees.

The schedule is NOT set to go on anywhere close to 11:00pm, and is not set to 77 degrees. Only the downstairs heater does this.

Yesterday I removed ALL schedules, and entered new ones. I set my heaters for 63 degrees at 2am and 6 pm. We don't use the heater much (we're in Southern California) and this works as a failsafe to assure it doesn't get left on too long.

This just started a few weeks ago. The settings for both thermostats have not been changed since we moved here two years ago. No one else but me has access to the settings. 

Any ideas as to what could cause this?

Thanks!

Richard

[EdwardT]

Hi rmruby,

Thanks for reaching out. I'm sorry to hear that you're having an issue with your Nest Thermostat. I'd love to know more about this. To isolate the issue, could you try checking your Nest Energy History? This would show you why the target temperature has been changed. You can click on this link to learn more about this.

Thanks,

Edward

[EdwardT]

Hey rmruby,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[EdwardT]

Hi rmruby,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward