LG Air Conditioner Troubleshooting


Problem: Air conditioner does not start

Possible Causes: The air conditioner is unplugged.

What To Do: Make sure the air conditioner plug is pushed completely into the outlet.

Problem: Air conditioner does not start

Possible Causes: The fuse is blown/circuit breaker is tripped.

What To Do: Check the house fuse/circuit breaker box and replace the fuse or reset the breaker

Problem: Air conditioner does not start

Possible Causes: Power failure.

What To Do: 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.

Problem: Air conditioner does not start

Possible Causes: High voltage.

What To Do: If the voltage is unusually very high or low the circuit Breaker will trip.

Problem: Air conditioner does not cool as it should

Possible Causes: Airflow is restricted

What To Do: Make sure there are no curtains, blinds, or furniture blocking the front of the air conditioner.

Problem: Air conditioner does not cool as it should

Possible Causes: The air filter is dirty.

What To Do: Clean the filter at least every 2 weeks. See the care and Maintenance section.

Problem: Air conditioner does not cool as it should

Possible Causes: The room may have been hot.




What To Do: When the air conditioner is first turned on, you need to allow time for the room to cool down.

Problem: Air conditioner does not cool as it should

Possible Causes: Cold air is escaping.

What To Do: Check for open furnace floor registers and cold air returns.

Problem: Air conditioner does not cool as it should

Possible Causes: Cooling coils have iced up.

What To Do: See Air Conditioner Freezing Up below.

Problem: Air conditioner does not cool as it should

Possible Causes: Check the temperature settings.

What To Do: Make sure they are correct.

Problem: Air conditioner does not cool as it should

Possible Causes: There might be any heating source in the room.

What To Do: 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 unit’s poor performance. In case of special situation, the job must be carried out by service person only.







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