If your thermostat is behaving erratically or something strange is in the display, pressing the reset buttons can often correct the problem.
Hardware Reset:
Try this first since it does not erase anything.
- Take the front of the thermostat off the wall and look for a small white round reset button on the right side labeled “H.W. Reset”.
- Hold this button down for at least 5 seconds.
- The screen should fully populate temporarily.
*If this does not correct the problem, proceed to a Software Reset
Software Reset:
*These steps will erase your custom program settings, so write down all temperatures and start times before you begin.
- Look for a small white round reset button on the left side with a line going up to a label “S. Reset”
- Hold this button down for at least 5 seconds.
- The screen should fully populate temporarily.
- The day & time will still be correct, but you will have to enter back in all your custom program values.