[. . . ] · Installation work must be performed in accordance with the National Electric Code by qualified and authorized personnel only. 2 Indoor Unit Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. ENGLISH WARNING CAUTION This symbol indicates the possibility of death or serious injury. [. . . ] Being exposed to direct airflow for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended periods of time. Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or other heating devices. Do not use this air conditioner for non-specified special purposes (e. g. Exposure to water can destroy the insulation, leading to possible electric shock. When cleaning the unit, first make sure that the power and breaker are turned off. There is a possibility of injury if the unit's power is accidentally triggered on while cleaning inner parts of the unit. Service For repair and maintenance, contact your authorized service dealer. 8 Indoor Unit Product Introduction Product Introduction Here is a brief introduction of the indoor units. Please see the information specific to your indoor unit type. ENGLISH Indoor Units Air inlet Grille tab Plasma filter (Optional) Front grille ON/OFF button Air filter Air outlet Louvers (Vertical blades) Flap (Horizontal blade) Signal receiver Operation indication lamps On/Off Sleep mode Plasma Timer : Lights up during the system operation, error code and auto restart setting. : The function illustrates its dynamic mode by using a multiple lighting system. : Lights up during timer operation or sleep mode auto operation. Defrost mode : Lights up during defrost mode or *hot start operation (Heat pump model only) Power Display : Indicates the setting temperature and operation mode. (Cooling, heating, auto operation, dehumidification mode) * Hot start operation: Stops the indoor fan in heating operation for minutes to prevent cold air from blowing out from unit. Could damage the surfaces of the air conditioner. P ow der G asoline Air Filters The air filters behind the front panel / grill should be checked and cleaned once in every 2 weeks or more often if necessary. To remove the filters see the self explanatory diagrams for each model type. If dirt is not easily removed, wash with a solution of detergent in luke warm water. Dry well in shade after washing and reinstall the filters back in place. Plasma Filters The plasma filters behind the air filter should be checked and cleaned once in every 3 months or more often if necessary. To remove the filters see the self explanatory diagrams for each model type. [. . . ] · Wait about three minutes and operation will begin. · Have you made a mistake in timer operation?· Has the fuse blown or has the circuit breaker been tripped? · Check that this is not a damp smell exuded by the walls, carpet, furniture or cloth items in the room. Does not cool or heat effectively. The air conditioner operation is noisy. Crack sound is heard. Remote control display is faint, or no display at all. · Is the air filter dirty?· The room may have been very hot when the room air conditioner was first turned on. [. . . ]