This is to provide a reminder to clean the filter.
Lg ac window unit clean filter light.
Pull the filter straight up to remove it from the air conditioner.
Gently shake away excess water from the filter allow it to air dry and reinstall the filter.
Press reset filter to turn off the led and reset the accumulated run time.
If step 1 and 2 fails then you can try connecting lg thinq app to your refrigerator.
Wash the filter using lukewarm water below 104 f 40 c.
It should reset and your problem should be solved the filter warning should be reset.
Shake the excess water from the filter before putting it back in.
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.
Rinse the filter under lukewarm running water until clean.