– 15 – 4-way Cassette typeREQUIREMENTClean the heat exchanger with pressurized water.If a commercially available detergent (strong alkaline oracid) cleaning agent is used, the surface treatment of theheat exchanger will be damaged, which may degradethe self cleaning performance.For further details, contact the dealer.Replacing antibacterial glassHave your dealer replace the antibacterial glass every10000 hours of the cooling operation.Cleaning the air filterIf appears on the remote control, clean the air filter.1 Open the air intake by sliding the latches.Let the grille drop while holding it.2 Remove the air filter from grille.3 Vacuum the filter and rinse it with water.4 Dry the filter.5 Wipe the inside of the air intake with water ormild detergent and then dry it.6 Reinstall the filter.7 Close the grille and secure it to the frame bythe latches.8 Push button to reset filter timer.“FILTER ” disappears.CAUTIONDo not start the air conditioner while leaving the paneland air filter removed.Part code 43179152Antibacterial glassAir intakeKnobStrap toprevent fallingAir filterAir intakeKnobCleaning Unit Grille and FrameTo clean the grille and the frame, wipe the outside witha soft, dry cloth. If necessary, a mild liquid detergentcan be applied and wiped off with a dry cloth.Cleaning The Louvers1 Remove the discharge louver by holding it atboth ends and pulling downwards towardsthe center.2 Clean the louvers with water or milddetergent.3 Mount the discharge louver by inserting oneend and bending it outwards to allow theother end to be inserted.NOTEInstall the louvers with the marking faces upwards.Preparing for long Shut Down Period1 Clean the filters and reposition them in theunit.2 Operate the unit in the fan mode for 3 or 4hours to dry all the internal parts.3 Turn the unit off and disconnect the mainpower supply.4 Before the unit is turned on again, ensurethe circuit breaker has been turned on for atleast 12 hours. Ceiling typeCleaning the air filterIf appears on the remote control, clean the air filter.1 Open the air intake by sliding the latches.Let the grille drop while holding it.2 Remove the air filter from the grille.3 Vacuum the filter and rinse it with water.4 Dry the filter.5 Wipe the inside of the air intake with water ormild detergent and then dry it.6 Reinstall the filter.7 Close the grille and secure it to the frame bythe latches.8 Push button to reset the filter timer.“FILTER ” disappears.2)Insert in the louver saggingdown the center downward.1) InsertlatchAir intakeSlideHookAir filterHandleHandleHookAir intakeLatchAir filter29-EN 30-EN