The filter life timer needs a manual reset.
- Ensure the new True HEPA Filter and the Pre-Filter are installed correctly and the front panel is closed.
- Turn the unit on.
- Locate the Filter Reset Button.
- Use a thin object like a paper clip.
- Press and hold the Filter Reset Button for 5 seconds.
You should hear a beep. The Check Filter Indicator LED will turn off. The timer is now reset.
If that didn't work: Confirm you are holding the button for a full 5 seconds while the unit is powered on. If the light remains, unplug the unit for 30 seconds, then repeat the process.
Heads up: Only reset this after physically replacing the True HEPA and Activated Carbon filters. The replacement filter SKU is 1712-0123-00.