LG LMU180CE Owner's Manual - Page 27

ENGLISH Maintenance and Service Troubleshooting Check the following points before requesting repairs or service.... If the fault persists, please contact your dealer or service center. Case The air conditioner does not operate. Explanation • Check room temperature setting? • Check if circuit breaker is on? The room has a peculiar odor. • Check that this is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room. See page 11~12, 15 - - It seems that condensation • Check the drain hose is connected tight or if is leaking from the air indoor unit is installed even. - conditioner. Air conditioner does not • This is the protector of the mechanism. operate for about 3 minutes • Wait about 3 minutes and operation will begin. after turning on. • About 3 minutes delay is applied to protect - compressor from frequenty on/off. Does not cool or heat effectively. • Is the air filter dirty? See air filter cleaning instructions. • Has the temperature been set correctly? • Are the indoor unit's air inlet or outlet vents obstructed? The air conditioner operation is noisy. • For a noise that sounds like water flowing. -This is the sound of refrigerant flowing inside the air conditioner unit. • For a noise that sounds like the compressed air releasing into atmosphere. -This is the sound of the dehumidifying water being processed inside the air conditioning unit. Remote Controller display is faint, or no display at all. • Are the batteries depleted? • Are the batteries inserted in the opposite (+) and (-) directions? Crack sound is heard. • This sound is generated by the expansion/constriction of the front panel, etc. due to changes of temperature. 23~25 12, 15 - - 9 - Owner's Manual 27