When the unit is turned on, the microcomputer operates the flaps to determine their position for initialization.
The water flowing sound is produced by the refrigerant that flows inside the air conditioner.
The air releasing sound is caused by a change of the refrigerant flow direction.
When power supply voltage fluctuates largely, the air conditioner may stop operating to protect the equipment.
Plastic parts such as the front panel produces a crackling sound when they expand or contract slightly due to temperature change.
When the air flow is set to LOW, the amount of air flow increases when the overload control is activated.
There is a slight time lag in the signal transmission between the master and slave units. It does not denote a malfunction.
The air outlet flaps move when the frost prevention or ceiling soiling prevention function is activated.
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).
In order to reduce the temperature of the heater, the fan operates 60 to 100 seconds after the air conditioner stops operating.
The defrost operation activated in the heating mode removes frost, which turns into water or steam.
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.
The monitoring function forcibly operates the indoor unit fan for one minute.
The air conditioner conducts a "warm-up" operation first so that it won't blow cold air in the heating mode.
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.