20
Troubleshooting
Check before consulting or requesting services.
Symptom Cause / Action
Indoor Unit
Noise
Sound like streaming water is heard
during operation or after operation.
• Sound of refrigerant liquid fl owing inside unit.
• Sound of drainage water through drain pipe.
Cracking noise is heard during
operation or when operation stops.
• Sound due to temperature changes of parts.
Discharged air smells during operation. • 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.)
Dewdrops accumulate near the air outlet during
cooling operation.
• Internal moisture is cooled by cool wind and
accumulates as dewdrops.
Fog occurs during cooling operation. • 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.)
Fog occurs during heating operation. • Defrost operation is in process.
The fan is rotating for a while even though
operation stops.
• The fan may rotate to dry the heat exchanger
depending on the setting.
Dust is discharged. • Dust accumulated inside the indoor unit is
discharged.
At the initial high-speed operation, the fan
sometimes rotates faster than the setting speed.
(3 to 30 minutes)
• This is for operation check in order to confi rm
whether the fan motor rotation is within the range
of use.
Humming noise comes out. • This is the sound of nanoe™X being discharged.
is not displayed on the remote controller.
• Has nanoe™X been set to OFF?
→ Set to ON.
is displayed on the remote controller.
• nanoe™X is considered abnormal.
(Contact your dealer.)
Outdoor Unit
No operation
(When the power is turned on immediately/When
operation is stopped and resumed immediately)
• Operation is not activated for the fi rst approx.
3 minutes because the compressor protection
circuit is activated.
Noise occurs during heating operation. • Defrost operation is in process.
Steam comes out during heating operation.
The fan continues to rotate even after the
operation is stopped using the remote controller.
• This is for smooth operation.
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