Turn off the power to the unit.
Remove the air filters from the indoor unit.
Remove the micro dust, triple and allergy filter from the indoor unit.
Clean the filter with a vacuum cleaner.
Insert the micro dust, triple and allergy filter.
Assemble the air filters.
Check the side of the front cover for correct assembly of the air filters.
The feature and location of micro dust, triple and allergy filter may vary according to the type of model.