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Owner's manual
7.2 Fault Symptom: Non Air Conditioning Issues
The following fault symptoms are not caused by the air conditioning:
7.2.1 Fault 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 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.
7.2.2 Fault 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 Fault 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 Fault symptom: White smoke from a certain unit (indoor unit)
▪ 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 qualified 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.
7.2.5 Fault symptom: White smoke from a certain unit (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 Fault symptom: Noise from air conditioner (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 flow in order to
prevent oil and refrigerant residues in the system.
7.2.7 Fault 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 Fault 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 Fault symptom: Dust and dirt in the unit
When using the unit for the first time. This is because there is dust
inside the unit.
7.2.10 Fault symptom: Strange odour from 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.
7.2.11 Fault symptom: ODU fan does not run
In the course of operation. Control speed of fan motor to optimize the
product operations.
7.2.12 Fault symptom: Hot air is felt when the indoor unit stops
Different types of indoor units operating in the same system. When
another unit is running, part of the refrigerant will still flow through this
unit.
8 Change Installation Site
Please contact the agent 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 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 hydrofluorocarbons.
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HTW V10
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