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• Maintenance. and inspection
Afte� years of operation, accumulated dust will more or
less impairs the unit's performance.
We advise you to enter a maintenance and inspection
contract (pay service) in addition to a normal
maintenance performed by yourself. Fo� details about
the professional service, contact your dealer.
• Where. to call
For after-sales service, etc., consult wittl your dealer.
• Recover the refrigerant first before unit's discard,
transport, reset and maintenance. The unit to be
discarded should be. handled by the. recycle with
qualification of dealing wittl the. wasted electrical
appliance and electronic products.
• Fo� eacti homogeneous material of the ai� conditioner,
contents ofthe lead, mercury, hexavalent chromium,
PBB and PBDE are lower than 0.1 % (mass fraction),
and content of the cadmium is lower than 0.01 %
(mass fraction).
10. NOT MALFUNCTION OF THE AIR
CONDITIONER
1. THE AIR CONDITIONER DOES NOT OPERAT E
• The air conditioner does not restart immediately
after the ON/OFF button is pressed.
• The air conditioner does not restart immediately
when TEMPERATURE SETTING button is returned
to the former position after pushing the button.
If the OPERATION lamp lights, the air conditioner is in
normal condition.
It does not restart immediately because a safety device
operates to prevent overload of the air conditioner.
After approx. 3 minutes, the air conditioner will turn on
again automatically.
• The air conditioner does not start when the display
shows " c:::x:::" and it flashes for few seconds after
pressing an operation button.
This is because the air conditioner is under centralized
control.
Flashes on the display indicates that the air conditioner
cannot be controlled by the remote controller.
• The outdoor unit stops.
This is because the indoor temperature has reached
the set temperature.
The indoor unit is in the FAN OPERATION.
COOLING OPERATION
(AUTOMATIC COOLING OPERATION):
Lower the set temperature.
The operation starts after a while when the air
conditioner is in normal condition.
2. THE OPERATION SOMETIMES STOPS
• The remote controller displays "U4" and "U5",
and the operation stops. However, it will restart
in a few minutes.
This is because communication between the indoor
and outdoor units or indoor units and remote controllers
is shut off and stops the operation due to noise caused
by devices other than the air conditioner.
When the electrical noise decreases, the air conditioner
automatically restarts.
3. THE FAN SPEED IS DIFFERENT FROM THE
SETTING
• Pressing the fan speed control button does not
change the fan speed.
During the COOLING OPERATION, the low fan speed
or a gentle wind is used to prevent the discharge of
melt water.
4. THE AIRFLOW DIRECTION IS DIFFERENT
FROM THE SETTING, OR THE AIRFLOW
DIRECTION IS DIFFERENT FROM THE
DISPLAY ON THE REMOTE CONTROLLER
• The horizontal blades do not swing when the
remote controller displays the swing operation.
<COOL AND PROGRAM DRY OPERATIONS>
When the operation in a downward airflow direction is
set, the airflow direction differs from the display for a
period of time to prevent condensation on the horizontal
blades.
5. HORIZONTAL BLADES DO NOT CLOSE
• The horizontal blades do not close even when
operation stops.
This is because the horizontal blades close once airflow
from the air conditioner stops. After a while, the
horizontal blades close.
6. WHITE MIST COMES OUT OF THE AIR
CONDITIONER
• When humidity is high during the COOLING
OPERATION (In oily or dusty places)
If the inside of an indoor unit is extremely contaminated,
the temperature distribution inside a room becomes
uneven. It is necessary to clean the inside of the indoor
unit. Ask your local dealer for details on cleaning the
indoor unit.
This cleaning requires a qualified service person.
Check the usage environment.
7. NOISE OF AIR CONDITIONERS
• A ringing sound after the indoor unit starts.
This sound is generated when the motors for driving
the horizontal blades are working. It will quiet down
after about a minute.
• A low continuous flow "Shuh" sound which is
heard when the air conditioner is in the COOLING
This is the sound of refrigerant gas flowing through both
indoor and outdoor units.
• A "Shuh" sound which is heard at the start or
immediately after the stop of operation
This is the noise of refrigerant caused by flow stop
and flow change.
• A "Pishi-pishi" squeaking sound is heard when
the air conditioner is in operation or after the
stop of operation.
Expansion and contraction of resin parts caused by
temperature change makes this noise.
8. DUST FROM THE INDOOR UNITS
• Dust may blow out from the unit after starting
operation from long resting time.
Dust absorbed by the unit blows out.
9. THE INDOOR UNITS GIVE OFF ODORS
• During operation
The unit absorbs the smell of rooms, furniture,
cigarettes, etc., and then emits them.
If odor is a concern, you can set to zero fan speed
when the indoor temperature reaches the set
temperature.
For details, contact your local dealer.
10. THE AIR CONDITIONER DOES NOT COOL
EFFECTIVELY
• The air conditioner is operating in the PROGRAM
DRY OPERATION.
This is because program dry mode operates so that
the indoor temperature decreases as little as possible.
Lower the indoor temperature using the COOLING
OPERATION, and then use the PROGRAM DRY
OPERATION.
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