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How do I reset the air filter monitoring system?  In most cases, you won't need to reset the Filter Monitoring System, even when you install new filters. Running a "Filter-Check" on a New Filter indicates the filters are 60-95% full.

To reset the indicator, please take the following steps:
1) Turn off and unplug the unit
2) Press the light button to the "on" position
3) Plug in the unit, and then release the button after the Filter-check starts
4) The system will automatically reset the Filter-Check Gauge in about 25 seconds
5) Once the procedure has completed resetting, please turn on the unit and press "Filter Check" button again.
6) This time, the system should report an accurate result.