8 Troubleshooting
User reference guide
12
ATXP20~35L2V1B
Daikin room air conditioner
4P513685-2 – 2017.11
Malfunction
Measure
The system operates,
but cooling or heating
is insufficient.
▪ Check the airflow rate setting. Refer to
"5.3.2 Airflow rate" on page 6
.
▪ Check the temperature setting. Refer to
"5.3.1 To start/stop operation and to set
the temperature" on page 6
▪ Check if the airflow direction setting is
appropriate. Refer to
.
▪ Check if the air inlet or outlet of outdoor
or indoor unit is NOT blocked by
obstacles. Remove any obstacles and
make sure the air can flow freely.
The system operates
but cooling or heating
is insufficient (air is
NOT blown from the
unit).
▪ The air conditioner may be warming up
for heat operation. Wait for about 1 to 4
minutes.
▪ The unit may be in defrost operation.
The system operates,
but cooling or heating
is insufficient (air is
blown from the unit).
▪ Check if the air filters are clogged. Clean
the air filters. See
.
▪ Check for open doors or windows. Close
doors and windows to prevent wind from
coming in.
▪ Check if the unit operates in Econo
operation.
Refer
to
.
▪ Check if there is any furniture directly
under or next to the indoor unit. Move the
furniture.
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.
▪ Check if 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.
An error code is
displayed on the user
interface.
Consult your local dealer. Refer to
"8.2 Solving problems based on error
codes" on page 12
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.
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
When a problem happens, an error code appears on the user
interface. It is important to understand the problem and to take
measures before resetting the error code. This should be done by a
licensed installer or by your local dealer.
This chapter gives you an overview of all error codes and the
content of the error code as it appears on the user interface.
For a more detailed troubleshooting guideline for each error, please
see the service manual.
Fault diagnosis by user interface
The user interface can receive an error code from the indoor unit
referring to the fault. It is important to understand the problem and
take measures before resetting the error code. This should be done
by a licensed installer or your local dealer.
To see the error code on the user interface:
1
Hold
for about 5 seconds.
Result:
blinks in the temperature display section.
2
Press
repeatedly until a continuous beep is heard.
Result:
The code is now displayed on the display.
