Malfunction
Measure
The OPERATION
lamp is off, but the
unit is operating
Check if the display brightness setting is
set to “OFF.” Refer to “3-4 Brightness of
the indoor unit display” on page 6.
The display lamps
on the unit are dark
Check if the display brightness setting is
set to “Dark.” Refer to “3-4 Brightness of
the indoor unit display” on page 6.
Vertical airflow
direction is not
possible
•
Check if the vertical airflow direction
setting is set to “OFF.” Refer to “To turn ON/
OFF Vertical airflow function” on page 9.
•
When the outdoor temperature or the
temperature of the floor is low, vertical
airflow direction may be inactive.
The ceiling and walls
around the indoor
unit are black and
dirty
Due to the circulation pattern of the air
and static electricity, the air conditioner is
causing airborne dirt and dust to stick to
walls and other surfaces. Depending on the
wallpaper type, dirt may adhere more easily.
A thorough cleaning of the area around the
air conditioner is recommended.
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 clopping 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 Hissing / Cracking sound
The sound of the Streamer discharge. It is not a malfunction.
7-1-8 A mechanical moving sound
•
The sound made when the flaps, louvres, or front panel
correct their positions at the beginning or end of operation, or
while operation is stopped.
•
It is the sound of the flaps, louvres, or front panel moving.
7-1-9 Symptom: White mist comes out of a unit
(Indoor unit, outdoor unit)
■
In heating operation
When the system is changed over to heating operation after
defrost operation. Moisture generated by defrost becomes
steam and is exhausted.
■
In cooling or drying operation
Moisture in the air condenses into water on the cool surface of
the outdoor unit piping and drips.
7-1-10 Symptom: The units can give off odours
•
The indoor unit is blowing out room odours it has absorbed
(the smell of walls or carpeting, furniture, clothes, and so on).
If the air conditioner has been used for a long time, there is
a chance that a dirty heat exchanger or fan are emitting an
odour.
We recommend you to have the indoor unit cleaned. Please
consult your dealer. Do not spray the air conditioner unit with
any deodorisers.
•
Due to Streamer discharge, the air outlet may emit a slight
odour as trace amounts of ozone are generated. However,
the amount is negligible and is not harmful to your health.
7-1-11
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.
7-2 Solving problems based on error codes
When a problem happens, an error code appears on the remote
controller. 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.
This chapter gives you an overview of all error codes and the
content of the error code as it appears on the remote controller.
For a more detailed troubleshooting guideline for each error,
please see the service manual.
Fault diagnosis by remote controller
The remote controller 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 remote controller:
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.
INFORMATION
•
A short beep and 2 consecutive beeps indicate
noncorresponding codes.
•
To cancel the code display, hold the
button for 5
seconds. The code will also disappear from the display if the
button is NOT pressed within 1 minute.
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