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Troubleshooting
If your air conditioner does not work properly, first check the following points before requesting service. If it still
does not work properly, contact your dealer or a service center.
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Tips for Energy Saving
Avoid • Do not block the air intake and outlet of the unit. If either is
obstructed, the unit will not work well, and may be damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains.
If the walls and ceiling of the room are warmed by the sun, it will take
longer to cool the room.
Do • Always try to keep the air filter clean. (Refer to “Care and Cleaning.”)
A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep windows, doors and any
other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily interrupted the unit will
automatically resume operation (once the power is restored) with the
same settings that were in effect before the power was interrupted.
Trouble Possible Cause Remedy
Air conditioner does not 1. Power failure 1. Restore power.
run at all.
2. Leakage circuit breaker has tripped. 2. Contact service center.
3. Line voltage is too low. 3. Consult your electrician or dealer.
4. Operation button is turned off. 4. Press the button again.
5. The wireless remote controller or 5. Consult your dealer.
heat pump is malfunctioning.
6. Batteries in wireless remote 6. Replace batteries.
controller have run down.
Compressor runs but 1. Obstruction in front of condenser coil 1. Remove obstruction.
soon stops.
Poor cooling (or heating) 1. Dirty or clogged air filter 1. Clean the air filter to improve the
performance airflow.
2. Heat source or many people in room 2. Eliminate heat source if possible.
3. Doors and/or windows are open. 3. Shut them to keep the heat (or cold)
out.
4. Obstacle near air intake or air 4. Remove it to ensure good airflow.
discharge port
5. Thermostat is set too high for cooling 5. Set the temperature lower (or higher).
(or too low for heating).
6. (Outdoor temperature is too low). 6. (Try to use a back-up heater.)
7. (Defrosting system does not work.) 7. (Consult your dealer.)
Lamps on the indoor 1. Trouble in wiring system 1. Contact service center.
unit are flashing.
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