7 Troubleshooting
Operation manual
18
(C)(F)TXA15~50A2V1B(W)(S)(T)
Daikin room air conditioner
3P485919-7C – 2017.12
Malfunction
Measure
The system operates,
but cooling or heating
is insufficient.
▪ Check the airflow rate setting. Refer to
"4.3.2 Airflow rate" on page 7
.
▪ Check the temperature setting. Refer to
"4.3.1 To start/stop operation and to set
the temperature" on page 7
.
▪ Check if the airflow direction setting is
appropriate. Refer to
"4.3.3 Airflow
direction" on page 7
.
▪ Check if the air inlet or outlet of the
outdoor or indoor unit is NOT blocked by
obstacles. Remove any obstacles and
make sure the air can flow freely.
▪ Check if the air filters are clogged. Clean
the air filters. See
"6 Maintenance and
service" on page 14
.
▪ Check for open doors or windows. Close
doors and windows to prevent wind from
coming in.
▪ Check if the unit operates in Econo or
Outdoor unit quiet operation. Refer to
"4.3.6 Econo and Outdoor unit quiet
operation" on page 9
.
▪ Check if there is any furniture directly
under or next to the indoor unit. Move the
furniture.
The system operates,
but heating is
insufficient (air is NOT
blown from the unit).
▪ The air conditioner may be warming up
for heating operation. Wait for about 1 to
4 minutes.
▪ If a flowing sound is heard, the outdoor
unit may be in defrost operation. Wait for
about 4 to 12 minutes.
The front panel does
NOT open.
Check for the obstacles and try to open the
front panel using the user interface. Refer
to
"6.4 To open the front panel" on page 15
.
The ON/OFF timer
does NOT operate
according to the
settings.
▪ Check if the Weekly timer and ON/OFF
timer are set to the same time. Change
or deactivate the setting. Refer to
"4.5 OFF/ON timer operation" on page 9
and
"4.6 Weekly timer operation" on
page 10
.
▪ Check if the clock and the day of the
week are set correctly. Refer to
"3.3 Clock" on page 5
.
Heating operation
CANNOT be selected.
Check if the user interface's jumper J8 has
NOT been cut.
J8
An abnormal function
happens during
operation.
The air conditioner may malfunction
because of lightning or radio waves. Turn
the breaker OFF and back ON.
The unit does NOT
receive signals from
the user interface.
▪ Check the batteries of the user interface.
Refer to
"3.2 To insert the batteries" on
page 4
.
▪ Make sure that the transmitter is NOT
exposed to direct sunlight.
▪ Check if there are any electronic starter
type fluorescent lamps in the room.
Contact your dealer.
The user interface
display is blank.
Replace the batteries of the user interface.
Malfunction
Measure
An error code is
displayed on the user
interface.
Consult your local dealer. Refer to
"7.2 Solving problems based on error
codes" on page 19
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).
7.1
Symptoms that are NOT system
malfunctions
The following symptoms are NOT system malfunctions:
7.1.1
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.
7.1.2
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).
7.1.3
Symptom: A ticking sound is heard
This sound is generated when the unit slightly expands or contracts
with changes in temperature.
7.1.4
Symptom: A whistling sound is heard
This sound is generated by the refrigerant flowing during defrost
operation.
7.1.5
Symptom: A clicking sound during
operation or idle time is heard
This sound is generated when the refrigerant control valves or
electrical parts operate.
7.1.6
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.
7.1.7
Symptom: White mist comes out of a unit
(Indoor unit, outdoor unit)
When the system is changed over to heating operation after defrost
operation. Moisture generated by defrost becomes steam and is
exhausted.
7.1.8
Symptom: The units can give off odours
The unit can absorb the smell of rooms, furniture, cigarettes, etc.,
and then emit it again.
