Symptom: Airflow Temperature Is Not High Enough During Heat Plus Operation; Symptom: A Sound Like Water Flowing Is Heard; Symptom: A Blowing Sound Is Heard; Symptom: A Ticking Sound Is Heard - Daikin FVXM25A3V1B User Reference Manual

9.2.1 Symptom: Airflow temperature is NOT high enough during Heat plus operation

9.2.2 Symptom: A sound like water flowing is heard

9.2.3 Symptom: A blowing sound is heard

9.2.4 Symptom: A ticking sound is heard

9.2.5 Symptom: A whistling sound is heard

9.2.6 Symptom: A clicking sound during operation or idle time is heard

9.2.7 Symptom: A clapping sound is heard

9.2.8 Symptom: White mist comes out of a unit (Indoor unit)

9.2.9 Symptom: The units can give off odours

CVXM-A, FVXM-A, CVXM-A9, FVXM-A9, FVXTM-A
Split system air conditioners
4P625990-1D – 2022.09
▪ When the outdoor temperature is low and falls below freezing point, the airflow
temperature may be insufficient.
▪ During multi-room operation with multi outdoor unit connection, discharge air
temperature may be unable to reach a sufficient value.
▪ This sound is caused by the refrigerant flowing in the unit.
▪ This sound may be generated when water is flowing away from the unit during
cooling or drying operation.
This sound is generated when the direction of the refrigerant flow is changed (e.g.
when switching from cooling to heating).
This sound is generated when the unit slightly expands or contracts with changes in
temperature.
This sound is generated by the refrigerant flowing during defrost operation.
This sound is generated when the refrigerant control valves or electrical parts
operate.
This sound is generated when an external device sucks air out of the room (e.g.
exhaust fan, extractor hood) while the doors and windows in the room are closed.
Open the doors or windows, or turn off the device.
▪ When humidity is high during cooling operation (in oily and dusty places). If the
interior of an indoor unit is extremely contaminated, the temperature
distribution inside a room becomes uneven. It is necessary to clean the interior
of the indoor unit. Ask your dealer for details on cleaning the unit. This operation
requires a qualified service person.
▪ When the air conditioner is changed over to heating operation after defrost
operation. Moisture generated by defrost becomes steam and exits.
The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it
again.
9 Troubleshooting
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User reference guide
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