Your Daikin Nexura will make certain noises as part of its normal operation (if you hear noises outside this list you may need to take action or contact your local AC mechanic): 

The following is a list of noises you may hear that are not a cause for concern:

A sound like a flow of water:

  • This sound is generated because the refrigerant in the air conditioner is flowing.
     
  • A pumping sound of the water in the air conditioner it is heard when the water is pumped out from the air conditioner in cooling or drying operation.
     
  • The refrigerant flows in the air conditioner even if the air conditioner is not working when the indoor units in other rooms are in operation, which may sound like a flow of water. 

Blowing sound:

This sound is generated when the flow of the refrigerant in the air conditioner is switched over.

Pinging sound:

This sound is generated when the size of the air conditioner slightly expands or shrinks 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.

Daikin Nexura Do I Hear Sound