How do I reset my thermostat?

For this model, the screen must be lit for any button press to be effective

If your thermostat is behaving erratically or something strange is in the display, Resetting can often correct the problem. Always try hardware reset first. If it does not fix the problem, do a software reset.

Hardware reset:

There is no button for hardware reset. To achieve a hardware reset (no data loss); remove batteries from tray for approximately 15minutes. The screen should be totally blank before inserting batteries. Insert batteries for normal operations.

Software reset:

  This will result in loss of all set programming and return to factory settings. Move mode switch to the OFF position. Press and hold the SET and NEXT buttons together for at least 5 seconds. The LCD display screen will become fully populated (let go of buttons at this point), and then return to normal. Reset is complete.