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Daikin VRV Aurora Serie Manual De Operación página 14

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Following Symptoms are not Air Conditioner Troubles
„White mist comes out of the unit
Indoor unit
• When humidity is high during cooling operation.
If the interior of 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 local dealer for details on cleaning the unit. This operation requires a qualified service person.
• Immediately after the cooling operation stops and if the room temperature and humidity are low.
This is because warm refrigerant gas flows back into the indoor unit and generates steam.
Outdoor unit
• When the system is changed over to heating operation after defrost operation.
Moisture generated by defrost becomes steam and is exhausted.
„Noise of air conditioners
Indoor unit
• An electric starting sound is heard immediately after the power supply is turned on.
The electronic expansion valve inside an indoor unit starts working and makes the noise. Its volume will reduce in about 1 minute.
• A continuous low hissing sound like flowing water is heard when the system is in cooling operation or at a stop.
When the drain pump (an optional accessory) is in operation, this noise is heard.
• A squeaking sound is heard when the system stops after heating operation.
Expansion and contraction of plastic parts caused by temperature change make this noise.
• A low sound like dripping water is heard while the indoor unit is stopped.
When the other indoor unit is in operation, this noise is heard. In order to prevent oil and refrigerant from remaining in the system, a small amount
of refrigerant is kept flowing.
Outdoor unit
• When the tone of operating noise changes.
This noise is caused by the change of frequency.
Indoor unit, outdoor unit
• A continuous low hissing sound is heard when the system is in cooling or defrost 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.
„Dust comes out of the unit
• When the unit is used after stopping for a long time.
This is because dust has gotten into the unit.
„The units can give off odors
• During operation.
The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it again.
„The outdoor unit fan does not rotate
• During operation.
The speed of the fan is controlled in order to optimize product operation.
„The compressor or fan in the outdoor unit does not stop
• This is to prevent oil and refrigerant from remaining in the compressor. The unit will stop after 5 to 10 minutes.
„The inside of outdoor unit is warm even when the unit has stopped
• This is because the crankcase heater is warming the compressor so that the compressor can start smoothly.
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