feature. Change to the next program period and press the FAN key until PRG FAN ON is on the display. The fan will continue to run through this period as well as the previous one.
If the thermostat is in a period with continuous fan and you want the fan to cycle, press the FAN key. PRG FAN ON on the display will turn off.
Air Filter
Change-Out Indicator.
This feature allows the thermostat to display CHNG FLTR (change filter) after a set time of fan operation. This is a reminder to change or clean your air filter. The factory set interval for CHNG FLTR to be displayed is 200 hours
of fan operation. This can be set anywhere from 0 to 1950 hours in 25 hour increments. A selection of 00 will cancel this feature.
When CHNG FLTR is displayed, you can clear it by pressing the FILTER key. This resets the timer and starts counting the hours until the next filter change.
The following steps will allow you to change the number of hours for filter
1.If CHNG FLTR is on the display, press the FILTER key once to reset the timer. If you do not see CHNG FLTR proceed to step 2.
2.Press the FILTER key, The display will show SET FILTER TIME and the number of hours remaining before CHNG FLTR
indicator will display.
3.Press the FILTER key a second time. The display will show SET FILTER TIME and will show the number of hours to filter change.
4.Press TIME FWD or TIME
BACK to change the time to your
requirements.
5.Press PROGRAM RUN to return to the normal operating mode.
NOTE: If unsure what interval to use between filter changes or cleaning, contact the manufacturer of your heating/cooling equipment.
System and Thermostat Diagnostics.
The display will indicate CHECK SYS if the room temperature does not rise within two hours of the call for heat. After two hours the
34
