English
13
XI. THE UNIT DOES NOT COOL EFFECTIVELY.
•
The unit is operating in program dry mode.
This is because program dry mode operates so
that the indoor temperature decreases as little
as possible.
Lower the indoor temperature using COOLING
OPERATION, and then use PROGRAM DRY
OPERATION.
(Refer to “CHARACTERISTICS OF THE PRO-
GRAM DRY OPERATION” on page 7.)
•
Read through characteristics of the COOLING
OPERATION, characteristics of the HEATING
OPERATION, and characteristics of the PRO-
GRAM DRY OPERATION on page 6, 7.
Please check before requesting a service call.
1. If the system does not operate at all.
•
Check if no 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.)
•
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-venti-
lated.
•
Check if the air filter is clogged.
Ask a qualified service person to clean the air
filters.
(Refer to “MAINTENANCE” on page 8.)
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
10. TROUBLE SHOOTING
Tab
Trip position
Power circuit breaker
(earth leakage breaker)
ON
OFF
at the air outlet.
(Refer to “MAINTENANCE” on page 8.)
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.
•
If the air filter is clogged.
Ask a qualified service person to clean the air
filters.
(Refer to “MAINTENANCE” on page 8.)
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 8.)
•
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?
3P184442-10J_FM6.book Page 13 Wednesday, December 14, 2011 3:38 PM
