Move the SYSTEM switch to the HEAT or COOL position to exit the
setting menu. If no buttons are pressed within 15 seconds , the
thermostat will exit the configuration menu.
3. Filter review
Move the SYSTEM switch to the HEAT or COOL position, then press
and hold the ▲ and ▼ buttons for 5 seconds to review filter running
days.
To exit the review menu press the ▲ or ▼ buttons one time. Or If
no buttons are pressed within 15 seconds, the thermostat will exit the
configuration menu. In review mode, press and hold the ▲ and ▼
15 sec. to clean the filter warning. It will show “dEF” blink.