How to clean 1 Wash away for cleaning. If it is not so dirty, tap it or use cleaner. If it is very dirty, dissolve some neutral detergent in lukewarm water (approximately 30°C), rinse the filter with it and wash the detergent away completely. 2 After the air filter is dried, mount it to the main body and press RESET button. MAINTENANCE OF THE UNIT The phenomena mentioned below is not malfunction. Clean the unit by wiping with a piece of soft and dry cloth. If the unit is very dirty, wipe it with a piece of cloth wet with neutral detergent dissolved in lukewarm water and wipe it off with clean water.
AT THE END OF THE SEASON (after a long period of use) ATTENTION • Clean the air filter and mount it. • Clean the indoor/outdoor units. Do not dry by exposing the air filter to the direct sunlight or using fire. Otherwise, the filter may be damaged. Do not operate the air conditioner with the filter removed. Otherwise it may lead to trouble. AT THE BEGINNING OF THE SEASON (after a long unused period) Inspect the air filter. If it is dirty, clean and mount it. • Turn on the power supply button for 6 hours before starting the operation. Check the following items before requiring service.
THE UNIT DOES NOT WORK AT ALL POOR COOLING OR HEATING POOR COOLING NO AIRFLOW AT HEATING Is the air filter clogged? Is the swing louver horizontal (during heating)? If the swing louver is horizontal, the airflow may not reach down to the floor. Are there any obstacles blocking the air inlet and outlet grill? • Is the direct daylight coming into the room? Is the unit in the heating preparation mode? • Are there any unexpected heat sources in the room? See page 18 • Are there too many people in the room? If, after checking the items above, the air conditioner still does not operate normally or in the next cases, stop operating and contact your dealer. If the fuse and breaker blow frequently.
If water drips at cooling/dehumidifying operation. If the operation or operation noise is abnormal. If the check indicator light flashes. The phenomena mentioned below is not malfunction. 18 HOW TO MAINTAIN TROUBLE SHOOTING The supply air from the indoor unit smells bad. The supply air from the indoor unit may smell bad if the smell of cigarettes, cosmetics and/or furniture has saturated the air conditioning system. White vapor is generated from the indoor unit during operation. White vapor may be generated during operation if the system is used in environment where oils and fats are frequently used, such as in restaurants. In this case, consult the dealer and clean the heat exchanger.
The operation switched to fan operation during cooling operation. The operation may switch to fan operation automatically in order to avald frost being built up on the surface of the heat exchanger. The operation will soon return to cooling operation. The operation switched to fan operation during cooling operation.(in case of FDFW type) In case the relative humidity is 73% or higher, the operation may alternate between fan operation and cooling operation even though the thermostat has not been activated. The objective of this operation mode is to prevent condensate dew formation and dew dropping from indoor unit air supply port.
The indoor fan does not stop even when the operation is stopped in heating mode. The indoor unit fan may continue operating for 40 seconds in order to remove remaining heat in the indoor unit. REQUESTS Do not turn off the power supply until the fan stops. The air conditioning system cannot start operating again immediately after stopping. During the first 3 minutes after stopping operation, it is not possible to perform cooling, dehumidifying or heating operation even if the ON/OFF button is pressed to indicate “operation.” This is because a circuit for protecting the compressor is activated (the fan is operating during this period). No air comes out during dehumidifying operation.
The airflow volume cannot be changed. During dehumidifying operation, the fan speed is automatically controlled in low speed/stop cycle in order to avoid both drastic temperature drop and humidity rise. The swing louver moves without any operation. The swing louver automatically swings twice when the power supply switch is turned on. This is not a trouble. The louver also moves automatically to the horizontal position when “PREPARATION OF HEATING” is displayed. The outdoor unit discharges water or steam during Water or steam is discharge during defrosting operation which removes frost built up on the surface of the heat exchanger in the outdoor unit in heating mode. heating operation.
The operation mode cannot be selected (in case of the heat recovery system KXR). When operation mode is set to the main and sub indoor unit during the heat recovery system KXR, operation mode of the sub unit cannot be selected.(In this case, the system conforms to operation mode of the main unit.) The outdoor unit fan is not running even when the system is in operation. The fan speed is automatically controlled according to the ambient temperature. It may be stopped in high ambient temperature in case of heating, and in low ambient temperature in case of coding. Also, the fan is stopped during defrosting operation. REQUESTS The fan will suddenly begin to operate even if it is stopped.
Do not insert finger and/or stick. REQUESTS Slapping sounds are heard. These sounds are generated when plastic components are expanded or shrunk by the heat and rubbed with each other. Hissing sounds are heard when the operation is stopped or during defrost operation. These sounds are generated when the refrigerant valve inside the air conditioning system is activated. The air conditioner starts operation automatically as soon as the power supply is turned on. In case the automatic restart function is enabled, and when the power supply recovers, the system restarts the operation automatically as same condition as before power supply is cut.
See below The setting temperature cannot be changed (the setting temperature display flashes). If changing the set temperature is prohibited on the remote control, it is not possible to change the temperature setting even T or S is pressed. See right The airflow becomes weak if the operation mode is changed during operation (in case of the heat recovery system KXR). When you switch the operation mode from Cool to Heat or from Heat to Cool during operation, the airflow becomes weak for 3 minutes. In case of wirless remote control, the unit does not operate with the inspection display light on the indoor unit flashing even though any button on the remote control is pressed.
In case the system is controlled by the other centralized remote control and it forbids operating the system from the remote control, it is not possible to operate by the remote control. TROUBLE SHOOTING Is the power supply switch Is there a blackout or is the Is the leakage breaker turned off? fuse blown? activated? ON Dangerous. Immediately turn off the power supply switch, OFF and contact your dealer. Is sunlight or other strong illumination striking the receive unit? (wireless unit) The air conditioning system sounds as if water is draining from it.
Sounds of rustling or gurgling may be heard when the operation is started, when the compressor is activated/ deactivated during operation, or when the operation is stopped. These are the sounds of the refrigerant flowing through the system. Sounds of rustling or gurgling may be heard from a stopped indoor unit. These sounds can be heard when the air conditioning system is performing automatic control.