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Troubleshooting
User reference guide
52
FTXTM-R, FTXTM-S
Daikin room air conditioner
4P728152-2 – 2023.03
Malfunction
Measure
The user interface display is
blank.
Replace the batteries of the user interface.
An error code can be
displayed on the user
interface.
Consult your local dealer. Refer to
problems based on error codes"
procedure how to display the error code and for a
detailed list of error codes.
Other electric appliances
start to operate.
If the user interface signals operate other electric
appliances, move the other appliances away, and
contact your dealer.
If after checking all above items, it is impossible to fix the problem yourself, contact
your installer and state the symptoms, the complete model name of the unit (with
manufacturing number if possible) and the installation date (possibly listed on the
warranty card).
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.
▪
The refrigerant flows in the air conditioner even if the indoor unit is turned off
and an indoor unit in another room is operating.
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.
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