Press reset filter to turn off the led and reset the accumulated run time.
Lg ac window unit clean filter light.
Shake the excess water from the filter before putting it back in.
If step 1 and 2 fails then you can try connecting lg thinq app to your refrigerator.
Check the air filter every two weeks and clean it as necessary.
Gently shake away excess water from the filter allow it to air dry and reinstall the filter.
It should reset and your problem should be solved the filter warning should be reset.
Rinse the filter under lukewarm running water until clean.
Wash the filter using lukewarm water below 104 f 40 c.
Pull the inlet grille forward to gain access to the air filter.
With the panel unlocked press and hold the air filter or water filter button for 3 to 5 seconds.
Remove the air filter from the front grille by pulling the air filter up slightly.