8 | Troubleshooting
User reference guide
31
ATXF50~71A2V1B
Daikin room air conditioner
4P513685-6C – 2019.12
8.1 Symptoms that are NOT system malfunctions
The following symptoms are NOT system malfunctions:
8.1.1 Symptom: A sound like water flowing is heard
▪ 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.
8.1.2 Symptom: A blowing sound is heard
This sound is generated when the direction of the refrigerant flow is changed (e.g.
when switching from cooling to heating).
8.1.3 Symptom: A ticking sound is heard
This sound is generated when the unit slightly expands or contracts with changes in
temperature.
8.1.4 Symptom: A whistling sound is heard
This sound is generated by the refrigerant flowing during defrost operation.
8.1.5 Symptom: A clicking sound during operation or idle time is heard
This sound is generated when the refrigerant control valves or electrical parts
operate.
8.1.6 Symptom: A clapping sound is heard
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.
8.1.7 Symptom: The units can give off odours
The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it
again.
8.1.8 Symptom: The outdoor fan rotates while the air conditioner is not in operation
▪ After operation has stopped. The outdoor fan continues to rotate for another
30 seconds for system protection.
▪ While the air conditioner is not in operation. When the outdoor temperature is
very high, the outdoor fan starts to rotate for system protection.
8.2 Solving problems based on error codes
If the unit runs into a problem, the user interface displays an error code. It is
important to understand the problem and to take measures before resetting an
error code. This should be done by a licensed installer or by your local dealer.
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