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Troubleshooting
Check before consulting or requesting services.
Sound like streaming water is heard
during operation or after operation.
Noise
Cracking noise is heard during operation
or when operation stops.
Discharged air smells during operation.
Dewdrops accumulate near the air outlet
during cooling operation.
Fog occurs during cooling operation.
Fog occurs during heating operation.
The fan is rotating for a while even though
operation stops.
The indoor unit fan is running and does
not stop when ON/OFF operation button on
remote controller is pressed.
Airflow direction changes while operating.
Airflow
Airflow direction cannot be set.
direction
Airflow direction cannot be changed.
Dust is discharged.
At the initial high-speed operation, the fan
sometimes rotates faster than the setting
speed.
(3 to 30 minutes)
Humming noise comes out.
is not displayed on the remote
controller.
is displayed on the remote
controller.
Symptom
Cause / Action
• Sound of refrigerant liquid flowing inside unit
• Sound of drainage water through drain pipe
• Sound due to temperature changes of parts
• Indoor odor components, cigarette odor and cosmetic odor
accumulated in the air conditioner and its air is discharged.
• The unit inside is dirty.
(Contact your dealer.)
• Internal moisture is cooled by cool wind and accumulates as
dewdrops.
• If the air conditioner has been installed at places such as
restaurants where large amounts of oil mist exist, cleaning is
necessary because the unit inside (heat exchanger) is dirty.
(Contact your dealer.)
• Defrost operation is in process.
• Fan rotation makes operation smooth.
• The fan may rotate to dry the heat exchanger depending on
the setting.
• The R32 refrigerant may be leaking. If R32 refrigerant leakage
detection sensor is connected and the refrigerant leaks, P08
alarm and inspection mark will be displayed on the remote
controller and the fan will automatically operate. Please
ventilate the room without turning off the earth leakage circuit
breaker and contact the service dealer for assistance.
• In case of the unit with R32 refrigerant leakage detection
sensor installed, are you using gas equipment (propane,
butane, methane, etc.) and sprays near R32 refrigerant
leakage detection sensor? R32 refrigerant leakage detection
sensor could lead to false detection and the fan may start
rotating. Please contact the service dealer for assistance.
• When air discharge temperature is low during heating
operation, or during defrost operation, horizontal wind flow is
made automatically.
• The flap position may be set individually.
(Type U2)
• Dust accumulated inside the indoor unit is discharged.
• This is for operation check in order to confirm whether the fan
motor rotation is within the range of use.
• This is the sound of nanoe™ X being discharged.
• Has nanoe™ X been set to OFF?
→ Set to ON.
• nanoe™ X is considered abnormal.
(Contact your dealer.)
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