To prevent tampering with your settings, the front panel keys and the rotary dial can be locked out, requiring a four digit code to unlock them. You may use either the default lock code of “000”, or your own code number. The button presses below must be performed in a timely manner. If not, it will go back to Run mode and you will have to start over.
If you forget the code and need to unlock it:
To program the lock code to a custom setting:
To Lock the keypad, just hit the icon of the padlock on the display screen. “Lock key” will appear. Hit “Yes”.
To Unlock the thermostat, hit the icon of the padlock on the display screen. “Unlock Key” will appear. Hit Yes and put in your 4 digit code. Hit Yes.