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7.2 Symptom: Non Air
Conditioning Malfunctions
The following fault symptoms are not caused by the air
conditioning:
7.2.1 Symptom: System cannot run
Air conditioner does not start immediately after pressing
the switch button on the controller. If the operating
indicator lights up, the system is working normally. In
order to prevent overloading of the compressor, the
compressor will start after 3-5 minutes. The same
start-up delay occurs after the mode selector is pressed.
7.2.2 Symptom: Fan speed is not
consistent with the setting
Even if the fan speed regulation button is pressed, the
fan speed does not change. During heating, when the
indoor temperature reaches the set temperature, the
outdoor unit will shut down, and the indoor unit switches
to the quiet fan speed mode. This is to prevent cold air
from blowing directly at the room user. The fan speed
will not change even when another indoor unit is in
heating operation, if the button is pressed.
7.2.3 Symptom: Fan direction is not
consistent with the setting
The air direction is not consistent with the user interface
display. The air direction does not swing. This is
because the unit is controlled by the centralized
controller.
7.2.4 Symptom: A unit is emitting
white smoke (indoor unit)
When humidity is high during cooling mode, white mist
may appear due to the humidity and the temperature
difference between the air inlet and outlet.
When the air conditioner is switched to heating mode
after defrosting, the IDU discharges the moisture
generated from defrosting as steam.
7.2.5 Symptom: A unit is emitting
white smoke (indoor unit, outdoor
unit)
After the defrosting operation, switch the system to the
heating mode. The moisture produced by the defrosting
operation will become steam to be discharged out of the
system.
7.2.6 Symptom: The air conditioner
is producing noise (indoor unit)
A continuous low "hissing" sound is heard when the
system is in "Auto", "Cool", "Dry", and "Heat" modes.
This is the sound of refrigerant gas flowing through both
indoor and outdoor
A "hissing" sound is heard at the start or immediately
after stopping operation or defrost operation. This is the
noise of refrigerant caused by flow change.
A "zeen" 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. it will reduce in about one minute.
A continuous low "shah" sound is heard when the
system is in cooling mode, dry mode 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.
A low "sah", "choro-choro" sound is heard while the
indoor unit is stopped. When another 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.
7.2.7 Symptom: Noise from air
conditioner (indoor unit, outdoor
unit)
A soft, continuous hissing sound can be heard when the
system is in cooling or defrosting operation. This is the
sound of the refrigerant gas flowing in the indoor and
outdoor units.
A hissing sound is heard the moment the system starts
or stops operation or after the defrosting operation has
been completed. This is the noise produced when the
refrigerant flow is stopped or changed.
7.2.8 Symptom: Noise from air
conditioner (outdoor unit)
When the tone of the operating noise changes. This
noise is caused by frequency changes.
7.2.9 Symptom: The IDU blows dust
When filter is very dirty, dust may enter the indoor unit
and be blown out.
7.2.10 Symptom: The IDU emits odor
The IDU absorbs the odors of rooms, furniture or
cigarettes, etc., and disperses the odors during
operation.
It is advised to have the air conditioner cleaned and
maintained regularly by professional technicians.
7.2.11 Symptom: ODU fan does not run
In the course of operation. Control speed of fan motor to
optimize the product operations.
7.2.12 Symptom: Hot air is felt when
the indoor unit stops
Several indoor units operating in the same system.
When another unit is running, part of the refrigerant will
still flow through this unit.
8 RELOCATION
Please contact the dealer to dismantle and reinstall all
the units. You need specialized skills and technology to
move the units.
9 DISPOSAL
This unit uses hydrogen fluorocarbons. Please contact
the dealer when you want to dispose this unit. Based on
the requirements of the law, the collection, transportation
and disposal of refrigerants must be in accordance with
the regulations governing the collection and destruction
of hydrofluorocarbons.
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