Frequently Asked Questions
Introduces common service requests and frequently asked questions, and explains the cause of problems and measures that can be taken by the users.
Room Air Conditioners (Home Air Conditioners)
Q) The air conditioner produces a bubbling sound.
In an air-tight residential unit such as a condominium, when the ventilation fan is operated with doors and windows closed, an air conditioner may produce a bubbling sound due to the difference of pressure
Q) The green/ red Operation lamp blinks during operation. Does it denote a malfunction?
It is a transitory problem, and it can be caused by the activation of the operation protection device. Turn off the circuit breaker (or unplug the power cord), then turn it on (plug the power cord) again. If the problem continues, have the air conditioner inspected and repaired.
Q) On the wireless remote controller, the display disappears or all items appear every time the controller is operated.
In most cases, the problem is caused by low battery power.
Replace the batteries with new alkaline batteries.
Use only alkaline batteries. Other types of batteries do not provide stable voltage, and they can cause unstable operation of the remote controller or shorten the battery replacement cycle
Q) New alkaline batteries have been installed, but the remote controller shows erroneous indications.
Defective conditions generated prior to the battery replacement may still be retained in the remote controller. Follow the following battery installation procedures.
Remove the batteries from the remote controller.
Without batteries in the remote controller, press the ON/OFF or other buttons to make sure the remote controller does not operate.
Reinstall the batteries in the remote controller. In this step, do not touch any operation button to prevent accidental pressing of buttons.
If the problem cannot be solved by the above procedures, request for a repair. Be sure to provide the product model code printed on the main unit or remote controller when requesting service.
FAQ GENERAL SERVICE Q&A
Please check the symptoms described here before requesting after-sales service.
Room Air Conditioners (Home Air Conditioners)
Q) The air conditioner does not start operation immediately after it is turned on.
To reduce excessive load in a restart, the air conditioner does not operate for three minutes when the ON switch is pressed immediately after it is shut down or when the operation mode (setting) is changed using the remote controller.
Q) The air conditioner does not blow air immediately after it starts operation in the heating mode.
The air conditioner conducts a "warm-up" operation first so that it won't blow cold air in the heating mode. The fan starts operating after one to four minutes of warm-up operation.
(The warm-up operation becomes longer when the outside air temperature is low.)
Q) The air conditioner produces a water flowing sound.
The air releasing sound is caused by a change of the refrigerant flow direction. This sound is generated when the air conditioner stops operating or the defrosting operation is activated in a heating operation
Q) The air conditioner produces an air releasing sound.
Plastic parts such as the front panel produce a crackling sound when they expand or contract slightly due to temperature change.
Q) The air condition produces a crackling sound.
Plastic parts such as the front panel produce a crackling sound when they expand or contract slightly due to temperature change.
Q) The outdoor unit discharges water or steam.
The defrost operation activated in the heating mode removes frost, which turns into water or steam. A small amount of water is also discharged during a heating operation
Q) The amount of drained water is large (as compared to the amount discharged in the previous year or the day before).
The amount of drained water varies depending on room temperature and humidity. A large amount of drained water does not denote a malfunction
Q) The air conditioner does not operate (Operation lamp is not lit).
Check the following.
Make sure the circuit breaker is not turned off and the fuse is not blown.
Make sure the power cord plug is connected securely to the service outlet.
Make sure there is no power outage.
Make sure the remote controller has new batteries.
Make sure the timer is not programmed mistakenly.
Q) The air conditioner does not cool or warm the room.
Check the following.
Make sure the air filters are not dirty.
Make sure the air inlets and outlets of the indoor and outdoor units are not blocked by objects.
Make sure the temperature setting on the remote controller is appropriate.
Make sure the doors and windows are closed.
Make sure the air flow and direction settings are appropriate.
Make sure ventilation fans in the room are not operating.
Q) The air conditioner stops operating (Operation lamp blinks).
Check to see if the air filters are clean.
Also make sure the air inlets and outlets of the indoor and outdoor units are not blocked.
Q) The air conditioner operates abnormally.
Check to see if the air filters are clean.
Also make sure the air inlets and outlets of the indoor and outdoor units are not blocked.
Q) The indoor unit produces a mist.
The cold air blow out during a cooling operation reduces the temperature of the room air and sometimes generates a mist.
Q) The air conditioner stops operation (Operation lamp remains lit).
When power supply voltage fluctuates largely, the air conditioner may stop operating to protect the equipment. (When power supply returns to a normal condition, the air conditioner resumes operation after three minutes.)
Q) The air conditioner stops in the middle of operation (ON timer in operation).
When the ON timer is set, the air conditioner may start as early as one hour before the set time in order to bring the room temperature close to the temperature set with the remote controller.
If the remote controller is operated (except ON/OFF operation) during this time period, the air conditioner enters the stop mode.
When this happens, turn on the air conditioner using the remote controller, and set the timer again
Q) The air conditioner produces an unpleasant odor.
Room, furniture and cigarette smoke odors enter the indoor unit and remain in the unit. When the air conditioner is turned on, it blows the accumulated odors together with air. (It is recommended to clean the inside of the indoor unit. Call the contact center.
