Generally, the average life span of any air conditioner is six to seven years. This is subjected to usage pattern and regular servicing of the air conditioner by a qualified air conditioner technician.
An Inverter air conditioner delivers cool air by varying the frequency of the compressor, and thus regulates the refrigerant to satisfy room cooling requirements and achieve the desired temperature with minimal fluctuations. It eliminates waste with precise control. In this way, it is more energy efficient.
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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.
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.)
The water flowing sound is produced by the refrigerant that flows inside the air conditioner. This sound is more prone to generation when the defrost operation is activated in a heating operation.
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.
Plastic parts such as the front panel produces a crackling sound when they expand or contract slightly due to temperature change.
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.
The amount of drained water varies depending on room temperature and humidity. A large amount of drained water does not denote a malfunction.
Check the following:
Lightning and radiowaves can sometimes cause abnormal operations of air conditioners.
Cut off the power supply by unplugging the power cord or turning off the circuit breaker, then re-supply power and restart the air conditioner.
The cold air blow out during a cooling operation reduces the temperature of the room air and sometimes generates a mist.
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.)
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.
When the unit is turned on, the microcomputer operates the flaps to determine their position for initialization.
The flap control varies the flap position depending on the operation mode such as cooling and heating.
When the air flow is set to LOW, the amount of air flow increases when the overload control is activated.
("Overload" is a condition in which the air conditioner operates under excess load. Overload can be caused by dirty filters.)
The air outlet flaps move when the frost prevention or ceiling soiling prevention function is activated.
The indoor unit fan operates at L for one minute when the outdoor unit (compressor) is not operating. The monitoring function forcibly operates the indoor unit fan for one minute.
At the same time in the master and slave indoor units of a simultaneous operation multi-unit. There is a slight time lag in the signal transmission between the master and slave units. It does not denote a malfunction.
In order to reduce the temperature of the heater, the fan operates 60 to 100 seconds after the air conditioner stops operating.
After the air conditioner stops operating, the drain pump operates for several minutes in order to discharge condensate from the drain pan (condensate receiving tray).
The flaps remain at the same position when room temperature reaches the set level and the thermostat turns off. When the thermostat is off, the flaps do not swing.
When a multiple number of units are controlled by a single remote controller (group control), the remote control thermostat cannot be set.
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.)