GRAPHICAL AIR FILTER MONITOR: In most systems that use a blower fan and air ducts, there is an air filter that is either replaceable or requires cleaning. The filter is usually located in the air handler, where the blower fan is. This thermostat feature assists you with keeping track of proper maintenance and/or periodic replacement intervals for your system’s filter.
The Graphical Filter Monitor displays a visual bar graph in the center of the screen, which shows the amount of air filter life remaining (in % percent), since the last time the air filter timer has been reset. Each dot in the filter bar graph equals 10 percent (example: 4 dots shown means 40 percent filter life remaining). This feature is for information purposes only, and does not affect the operation of your heating or cooling equipment, or the thermostat. When the filter usage duration has completly expired, the vertical filter bar graph will be empty, and the word “FILTER” will flash on the screen.
TO SET THE AIR FILTER DURATION: Move the Set Slide switch to the “AIR FILTER” position. The words “SET DAYS” will be shown on the screen, along with the word “FILTER” and
TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the “AIR FILTER” position. The three small digits at the bottom of the screen tell you the quantity of filter days remaining. Pressing the NEXT button will toggle the display between showing the days remaining as a number, or a graphical precentage remaining using the vertical bar graph. Press both the UP and DOWN buttons together at the same time, and the usage counter will return to the beginning of the value that it originally started counting from. Refer to the previous paragraph, should you wish to change the starting value for the filter monitor. Return the Set Slide switch to the RUN position when you are finished.
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