LG LA140CE Owners Manual - Page 28

Maintenance and Service Troubleshooting The air conditioner may be operating abnormally when: Problem Possible Causes What To Do Air conditioner does not start Air conditioner does not cool as it should Air conditioner freezing up s The air conditioner is unplugged. s The fuse is blown/circuit breaker is tripped. s Power failure. s Airflow is restricted. s The thermostat may not be set high enough. s The air filter is dirty. s The room may have been hot. s Cold air is escaping. s Cooling coils have iced up. s Ice blocks the air flow and stops the air conditioner from cooling the room. • Make sure the air conditioner plug is pushed completely into the outlet. • Check the house fuse/circuit breaker box and replace the fuse or reset the breaker. • If power failure occurs, turn the mode control to Off. When power is restored, wait 3 minutes to restart the air conditioner to prevent tripping of the compressor overload. • Make sure there are no curtains, blinds, or furniture blocking the front of the air conditioner. • Turn the knob to a higher number. The highest setting provides maximum cooling. • Clean the filter at least every 2 weeks. See the care and Maintenance section. • When the air conditioner is first turned on, you need to allow time for the room to cool down. • Check for open furnace floor registers and cold air returns. • See Air Conditioner Freezing Up below. • Set the mode control at High Fan or High Cool with thermostat at 1 or 2. * You can refer to the Energy Star program in detail at www.energystar.gov. 28 Room Air Conditioner