Maintenance
Different models have different appearance
Cleaning of unit casing
Cut off power supply 
before cleaning unit casing with soft cloth.
In case of heavy stain, clean it with neutral detergent. squeeze water in the cloth, wipe off the detergent on unit casing completely.
Cleaning of remote controller
Cleaning of air filter
Don't use water to wash unit casing, please use dry cloth. Don't use glass cleaner or cloth soaked with chemicals.
Air Filter
1.Open inlet grille by pulling it upward.
3.Clean the filter Use a vacuum
cleaner to remove dust,or wash the
filter with water. After washing, dry the filter
completely in the shade.
5.Close the inlet grille.
2.Remove air filter
Push up the filter's center tab slightly until it is caesura of the stopper. Remove it by pulling down.
4.Attach the filter 
Attach filter behind the stopper so that
the "Front" indication is facing to the front. Make sure that it is completely behind the stopper, otherwise problems might occur.
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