LG LAN245HV Owner's Manual - Page 19

Maintenance and Service Troubleshooting Tips! Save time and money! 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 ■ The air conditioner is unplugged. ■ The fuse is blown/circuit breaker is tripped. ■ Power failure. ■ High voltage. ■ Airflow is restricted. ■ The air filter is dirty. ■ The room may have been hot. ■ Cold air is escaping. ■ Check the temperature settings. ■ There might be any heating source in 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. • If the voltage is unusually very high or low the Circuit Breaker will trip. • Make sure there are no curtains, blinds, or furniture blocking the front of the air conditioner. • Clean the filter at least every 2 weeks. See the Maintenance and Service 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. • Make sure they are correct. • Check and remove such source or turn it off while using the air conditioner. Call the service immediately in the following situations 1. Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off. Never try to repair by yourself or restart the system in such cases. 2. Main power cord is too hot or damaged. 3. Error code is generated by self diagnosis. 4. Water leaks from indoor unit even if the humidity is low. 5. Any switch, breaker (safety, earth) or fuse fails to work properly User must carry routine checkup & cleaning to avoid unitʼs poor performance. In case of special situation, the job must be carried out by service person only. 18 Room Air Conditioner