To clean the filter on your LG Window Inverter AC, first turn off the unit and disconnect the power supply. Open the front grill by pulling the tabs or applying gentle force to the sides, then slide the filter out of its slot. Rinse the filter thoroughly under warm running water, using a soft brush to remove stubborn dust, and let it air dry completely in the shade before sliding it back into place. Once reinstalled and the AC is turned back on, you can reset the "Clean Filter" or "CF" notification by simultaneously pressing and holding the Temperature Up and Temperature Down arrow buttons directly on the unit’s control panel until the light turns off
Keeping your LG Window Inverter AC running efficiently requires regular maintenance, which includes cleaning the dust-trapping mesh filter and clearing the system's automated reminders.
Follow these steps.
Turn off the AC power, pull the tabs on the front panel to open the grill, and slide the mesh filter out.
Rinse the filter thoroughly under lukewarm running water to remove dust, then let it air dry completely in the shade.
Put the filter back, turn the AC on, and hold the Temp Up (▲) and Temp Down (▼) buttons together until the "CF" light turns off.
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