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owner’s manual
5
Symptom 3: White mist comes out of a unit
Symptom 3.1: Indoor unit
When humidity is high during cooling operation If the interior of
an indoor unit is extremely contaminated, the temperature
distribution inside a room becomes uneven. It is necessary to
clean the interior of the indoor unit. Ask your dealer for details
on cleaning the unit. This operation requires a qualified service
person.
Symptom 3.2: Indoor unit, outdoor unit
When the system is changed over to heating operation after
defrost operation Moisture generated by defrost becomes steam
and is exhausted.
Symptom 4: Noise of air conditioners cooling
Symptom 4.1: Indoor unit
A continuous low "shah" sound is heard when the system is in
cooling operation or at a stop.
When the drain pump (optional accessories) is in operation, this
noise is heard.
A "pishi-pishi" squeaking sound is heard when the system stops
after heating operation.
Expansion and contraction of plastic parts caused by
temperature change make this noise.
Symptom 4.2: Outdoor unit
When the tone of operating noise changes.
This noise is caused by the change of frequency.
Symptom 5: Dust comes out of the unit
When the unit is used for the first time in a long time.
This is because dust has gotten into the unit.
Symptom 6: The units can give off odours
The unit can absorb the smell of rooms, furniture, cigarettes,
etc., and then emit it again.
Table 8-1
Symptom 7: The outdoor unit fan does not spin.
During operation. The speed of the fan is controlled in order to
optimize product operation.
Table 7-1
Malfunction code
Malfunction
EE
DC motor malfunction
E3
T2 evaporator sensor malfunction
E2
T1 evaporator sensor malfunction
E8
Water-level alarm malfunction
E7
EEPROM communication error
8.
TROUBLESHOOTING
8.1. Troubles and causes of air conditioner
If one of the following malfunctions occur, stop operation, shut
off the power, and contact with your dealer.
The operation lamp is flashing rapidly (twice every second)
This lamp is still flashing rapidly after turning off the power and
turn on again.
Remote controller receives malfunction, or the button does not
work well.
A safety device such as a fuse, a breaker frequently actuates.
Water leaks from indoor unit.
Other malfunctions.
8.2. Troubles and causes of remote controller
Before asking for serving or repairing, check the following
points.
(Refer to Table 8-2)
Symptoms
Causes
Solution
Unit does not start
Power failure.
Power switch is off.
Fuse of power switch may have burned.
Batteries of remote controller exhausted
or other problem of controller.
Wait for the comeback of power.
Switch on the power.
Replace the fuse.
Replace the batteries or check the
controller.
Air flowing normally but
completely can't cooling
Temperature is not set correctly.
Set the temperature properly.
Low cooling effect
Indoor unit heat exchanger is dirty.
The air filter is dirty.
Inlet of indoor units is blocked.
Doors and windows are open
Sunlight directly shine.
Too much heat resource.
Outdoor temp. is too high.
Clean the heat exchanger.
Clean the air filter.
Eliminate all dirties and make air
smooth.
Close doors and windows.
Make curtains in order to shelter from
sunshine.
Reduce heat source.
AC cooling capacity reduces (normal).
Outdoor temperature is lower than 7 C .
Doors and windows not completely
closed.
Use heating device.
Close doors and windows.
Low heating effect
7


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