When the unit is turned on again soon after being turned off.

A sound like flowing water

• This sound is generated because the refrigerant in the air conditioner is flowing.
• This is a pumping sound of the water in the air conditioner and can be heard when the water is pumped out from the air conditioner during COOL or DRY operation.

Ticking sound

• This sound is generated when the cabinet and frame of the air conditioner slightly expand or shrink as a result of temperature changes.

Clicking sound during operation or idle time

• This sound is generated when the refrigerant control valves or the electrical parts operate.

Clopping sound

• This sound is heard from the inside of the air conditioner when the exhaust fan is activated while the room doors are closed. Open the window or turn off the exhaust fan.

Hissing/Cracking sound

• The sound of the streamer discharge.
  It is not a malfunction.

Rotating machinery causes sound

• Sound is heard when the vertical swing flaps and the horizontal swing flaps move.
• When the air conditioner is operating in a quiet environment and the airflow rate of the indoor unit is set to Quiet Mode or Low Mode, the motion of the swing flaps may cause sound.

In COOL or DRY operation

• Moisture in the air condenses into water on the cool surface of the outdoor unit piping and drips.