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16127000002047 V3.0
The following fault symptoms are not caused by the air conditioning:
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 motor, restart the air conditioner 12 minutes
after the switch button is pressed to prevent it from shutting down
immediately after it is on. The same start-up delay occurs after the
mode selector is pressed.
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 owing 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 ow is stopped or
changed.
When the tone of the operating noise changes. This noise is caused
by frequency changes.
When using the unit for the rst time. This is because there is dust
inside the unit.
This unit will absorb the odours of rooms, furniture, cigarettes and
others, and then disperse the odours again.
Small animals stray into the unit, which can also cause odors.
Different types of indoor units operating in the same system. When
another unit is running, part of the refrigerant will still ow through this
unit.
Please contact the agent to dismantle and reinstall all the units. You
need specialized skills and technology to move the units.
This unit uses hydrogen fluorocarbons. Please contact the agent
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 hydrouorocarbons.
In the course of operation. Control speed of fan motor to optimize the
product operations.
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.
During cooling when the humidity is high. If the interior pollution of
the indoor unit is severe, the indoor temperature distribution will be
uneven. Need to clean the interior of the indoor unit. Ask the agent
for detailed information on how to clean the unit. This operation
must be carried out by qualied maintenance personnel.
Surface immediately after cooling has stopped and when the indoor
humidity is relatively low. This is due to the steam produced by the
warm refrigerant gas on its return path to the indoor unit.
A "zeen" sound is heard the moment the system is powered on.
This noise is produced by the electronic expansion valves inside
the indoor unit as they begin to work. The sound volume will be
reduced in about 1 minute.
A soft and continuous "shah" sound can be heard when the system
is in a cooling mode or has stopped running. This noise can be
heard when the drainage pump is running (optional accessory).
A loud creaking "pishi-pishi" sound can be heard once the
system stops after it has heated up the room. The expansion and
contraction of plastic parts caused by temperature changes will
also make this noise.
Once the indoor unit stops, a soft "sah" or "choro-choro" sound can
be heard. This noise can be heard when another indoor unit is still
running. Must maintain a small amount of refrigerant ow in order
to prevent oil and refrigerant residues in the system.
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.
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 Fault Symptom: Non Air Conditioning Issues
7.2.1 Fault symptom: System cannot run
7.2.7 Fault symptom: Noise from air conditioner (indoor unit,
outdoor unit)
7.2.8 Fault symptom: Noise from air conditioner (outdoor unit)
7.2.9 Fault symptom: Dust and dirt in the unit
7.2.10 Fault symptom: Strange odour from unit
7.2.11 Fault symptom: ODU fan does not run
7.2.12 Fault symptom: Hot air is felt when the indoor unit stops
8 Change Installation Site
9 Disposal
7.2.2 Fault symptom: Fan speed is not consistent with the setting
7.2.3 Fault symptom: Fan direction is not consistent with the setting
7.2.4 Fault symptom: White smoke from a certain unit (indoor unit)
7.2.5 Fault symptom: White smoke from a certain unit (indoor unit,
outdoor unit)
7.2.6 Fault symptom: Noise from air conditioner (indoor unit)
7


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