English13(a)(b)Fig. 4■Cleaning and maintenanceClean the front panelClean the front panel with a damp cloth and wipe dry.Note: Do not immerse the front panel in water. Doing so can cause damage to themicrocomputer components and circuit diagrams on the front panel.Clean the air filter (Recommended once every three months)NOTE: The air filters must be cleaned regularly if there is a lot of dust around the air conditioner.After you remove the air filter, be careful not to touch the fin on indoor unit to preventinjury to your fingers.• Make sure to the turn power off and disconnect the power plug before cleaning the airconditioner to prevent the risk of electric shock.• Do not put water directly on surfaces of the indoor or outdoor units. There is a risk ofelectric shock.• Flammable liquids (thinner, gasoline, etc.) will damage the air conditioner. (Clean the unitswith a dry soft cloth, or a cloth dampened with water, or gentle cleanser.)CAUTION(1) Remove the air filterAt the opening of the front panel pull the air filter downward toremove it. See Fig. 4 (a, b).(2) Clean the air filterRemove dust from the air filters with a vacuum cleaner, orwash with warm water (water with neutral detergent below45°C). Dry air filters in the shade.NOTE: Do not use water above 45°C. Doing so can causedeformation or discoloration. Keep away from sparks orflame, which can start a dangerous fire.(3) Insert the air filterInsert the air filters to agree in the direction of the arrowsymbol, replace cover, and clasp in position.