Solving Common ProblemsE-14Explanation/Solution Check for a power failure. Check that the power plug is plugged in tightly. Check that the power outlet is not of a poor quality. Check that the front panel is closed properly.ProblemThe air cleaner does notoperate.Before contacting the after-sales service, perform the following simple checks.This may prevent you from making an unnecessary call and wasting your time and money. Check whether the front panel was opened during operation.Press the Power button if you wish to restart the air cleaner.The air cleaner stops itsoperation abruptly. Check that the air cleaner is used in places that havea high level of odor permeating contaminants in the air.The air cleaner cannot fully function in an environment where thelevel of contamination is too high. Check whether the dirty filters are in the front panel.Unpleasant odors can bedetected coming from theair cleaner. Check whether the air cleaner operates in the Sleep mode.In the Sleep Mode, the control part automatically diminishes itsbrightness to ensure a comfortable sleeping setting.The brightness of the controlpart is too dim. Check whether the filters in the Washable Filter Section and thePhotocatalyst filter have been cleaned and replaced regularly. Check that there are no additional contaminants entering the roomthrough open windows and doors.The air in the room still feelsunclean. Contact the service center when the sensor senses contaminantsimproperly.The Clean Level indicator blinks. Contact the service center when the fan motor operates improperly.indicator blinks.