8TroubleshootingIf your air conditioner does not work properly, first check the following points before requesting service. If it still doesnot work properly, contact your dealer or a service center.Tips for Energy SavingTrouble Possible Cause RemedyAir conditioner does not run at all. 1. Power failure. 1. After a power outage, press ON/OFF operation button on thewired remote control unit.2. Leakage circuit breaker hastripped.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 wired remote control unit orheat pump is malfunctioning.(The inspection mark and theletters E, F, H, L, P incombination with numbersappear on the LCD of the wiredremote control unit.)5. Consult your dealer.Compressor runs but soon stops. 1. Obstruction in front of condensercoil.1. Remove obstruction.Poor cooling (or heating)performance.1. Dirty or clogged air filter. 1. Clean air filter to improve theairflow.2. Heat source or many people inroom.2. Eliminate heat source if possible.3. Doors and/or windows are open. 3. Shut them to keep the heat (orcold) out.4. Obstacle near air intake or airdischarge port.4. Remove it to ensure good airflow.5. Thermostat is set too high forcooling (or too low for heating).5. Set the temperature lower (orhigher).6. (Defrosting system does not work.) 6. (Consult your dealer.)Avoid • Do not block the air intake and outlet of the unit. If either isobstructed, 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 takelonger to cool the room.Do • Always try to keep the air filter clean. (Refer to “Care and Cleaning”.) Aclogged filter will impair the performance of the unit.• To prevent conditioned air from escaping, keep windows, doors and anyother openings closed.Should the power fail while the unit is runningIf the power supply for this unit is temporarily cut off, the unit will automaticallyresume operation once power is restored using the same settings before thepower was cut off.NOTEOI-100-8-EN