Trouble Shooting - Daikin FAA71AUVEB Operation Manual

10. TROUBLE SHOOTING

TROUBLE SHOOTING
Please check before requesting a service call.
1. If the system does not operate at all.
• Check if fuse has blown.
Turn off the power supply.
• Check if the power circuit breaker is blown.
Turn the power on with the power circuit
breaker switch in the off position.
Do not turn the power on with the power circuit
breaker switch in the trip position.
(Contact your dealer.)
Power circuit breaker
(earth leakage breaker)
• Check if there is a power failure.
Wait until power is restored. If power failure
occurs during operation, the system automati-
cally restarts immediately after the power sup-
ply recovers.
2. If the system stops operating after operation
is complete.
• Check if the air inlet or outlet of outdoor or indoor
unit is blocked by obstacles.
Remove the obstacle and make it well-ventilated.
• Check if the air filter is clogged.
Ask a qualified service person to clean the air
filters.
(Refer to "MAINTENANCE" on page 9.)
If the air filter is clogged, the airflow rate will
drop and as a result the performance will also
drop.
In addition, this may cause dew condensation
at the air outlet.
(Refer to "MAINTENANCE" on page 9.)
3. The system operates but it does not suffi-
ciently cool or heat.
• If the air inlet or outlet of the indoor or the outdoor
unit is blocked with obstacles.
Note: After a while, the vertical airflow adjust-
ment flaps at the air outlet are closed
while the unit stops.
Remove the obstacle and make it well-venti-
lated.
Obstacles decrease the airflow rate, and
cause performance decrease and breakage
when discharged air is suctioned.
They cause a waste of electricity, and that may
stop the devices.
English
Tab
ON
Trip position
OFF
• If the air filter is clogged.
Ask a qualified service person to clean the air
filters.
(Refer to "MAINTENANCE" on page 9.)
A decrease in the airflow volume of the air con-
ditioner will result and the performance of the
air conditioner will be degraded if the air filter is
clogged with dust or dirt.
In addition, this may cause dew condensation
at the air outlet.
(Refer to "MAINTENANCE" on page 9.)
• If the set temperature is not proper (Set to an
appropriate temperature, airflow rate, and dis-
charge direction.).
• If the FAN SPEED button is set to LOW
SPEED (Set to an appropriate temperature,
airflow rate, and discharge direction.).
• If the airflow angle is not proper (Set to an
appropriate temperature, airflow rate, and dis-
charge direction.).
• If the doors or the windows are open. Shut doors
or windows to prevent wind from coming in.
• If direct sunlight enters the room (when cooling).
Use curtains or blinds.
• When there are too many inhabitants in the
room (when cooling).
• If the heat source of the room is excessive
(when cooling).
4. Though the on/off button was not pressed,
the unit started or stopped.
• Are you sure that the ON/OFF timer operation
is not used?
Turn off the ON/OFF timer.
• Are you sure that a remote control device is not
connected?
Contact the central control room that directed
the stop.
• Are you sure that the display for centralized
control is not lit?
Contact the central control room that directed
the stop.
If the problem is not solved after checking the above
points, please do not try to repair it yourself. In such
cases, always ask your local dealer. At this time,
please tell the symptom and model name (written on
the manufacturer's label).
If one of the following malfunctions occurs, take
the measures shown below and contact your
Daikin dealer.
The system must be repaired by a qualified service
person.
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