The default is Indefinite Hold. If the “Hold” key is pressed, the current set point
will be maintained until Hold is released by pressing the “Hold” key again. If the
24 Hour Hold is selected, the current set point would be maintained for 24 hours
or until the Hold is released by pressing the “Hold” key again. The thermostat
will then return to its normal program. Press the “Return” key to enter the
Adjustable Filter Warning setting, or wait 15 seconds for the thermostat to accept
the changes and return to normal operation mode.
7) The Adjustable Filter Warning displays the “FILT” icon when it is time to
change/clean the filter in your system. Press the “Up” or “Down” key to change
the filter warning interval between 0, 120, 300, 600, 900, 1200, or 1800 hours of
fan operation. The default is 0 (warning disabled). When you are finished
adjusting the settings, press the “Return” key or wait 15 seconds for the thermostat
to accept the changes and return to normal mode.