Clean the Air Filter
Clean the air filters once every 2 weeks, or more, if necessary.
Note
The air filter can be broken when it is bent.
When the air filter is not assembled correctly, dust and other substances can enter into the indoor unit.
Turn off the power to the unit.
Open the front panel.
Lift up both sides of the panel slightly.
Hold the knobs of the air filters, pull them down slightly and remove them from the indoor unit.
Clean the filters with a vacuum cleaner or with lukewarm water with neutral detergent.
Dry the filter in the shade.