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III. 6. FOLLOWING SYMPTOMS ARE NOT AIR CONDITIONER TROUBLES
Symptom 1: The system does not operate.
The air conditioner does not start immediately after the ON/OFF button on the remote controller is pressed. If the
operation lamp lights, the system is in normal condition. To prevent overloading of the compressor motor, the air
conditioner starts 3 minutes after it is turned ON.
If the operation lamp and the "PRE-DEF indicator light, it means you choose the heating mode. When just starting, if the
compressor has not started, the indoor unit appears "anti cold wind" protection because of its over low outlet temperature.
Symptom 2: Change into the fan mode during cooling mode
In order to prevent the indoor evaporator frosting, the system will change into fan mode automatically, restore to the
cooling mode after soon.
When the room temperature drops to the set temperature, the compressor goes off and the indoor unit changes to fan
mode; when the temperature rises up, the compressor starts again. It is the same in the heating mode.
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: Indoor unit, outdoor unit
A continuous low hissing sound is heard when the system is in operation. This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
A hissing sound which is heard at the start or immediately after stopping operation or defrost operation. This is the noise
of refrigerant caused by flow stop or flow change.
Symptom 4.3: 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.
Symptom 7: The outdoor unit fan does not spin
During operation. The speed of the fan is controlled in order to optimize product operation.
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