* Did you program your Nest with a schedule that someone keeps overriding?
You can lock the Nest thermostat from manual intervention if that is what is necessary in your home or commercial space to maintain a responsible temperature.  The choice you have is to allow temperature adjustment within a range or to set one temperature that cannot be manipulated.
At the device:
  • Press to wake the device
  • Scroll to the “settings” menu and press the device
  • Scroll to the “lock” menu and press the device
  • Input a four-digit pin code and “Continue”
  • Choose “Allow adjustment within a range” or “Set one temp”
  • Input the range or single temperature(s)
  • Navigate to “Done” and press the device
Enjoy the temperature settings you have established.