The filter light will illuminate as a reminder when it is time to clean your filter. After you have cleaned and replaced your filter, you will need to reset the indicator light. To reset your filter reminder, locate the control panel on the unit, then press and hold the Sleep button for three seconds.
This information and more can be found within the Owner’s Manual, which a digital copy can be obtained on the product page of Edgestar.com
Note: This step can only be completed on the unit control panel not the remote control.