14
7.3 Fault Symptom: Non Air
Conditioning Issues
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 operating indicator lights up, the system is working
normally. 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 (cooling
and heating type) or fan only indicator (cooling only type)"
light up, it means you must choose heating mode. When the
unit has just started up, if the compressor has not started,
the IDU displays "anti cold wind" protection because the air
outlet temperature is too low.
Symptom 2: The system switches into the fan mode during cooling
● In order to prevent the indoor evaporator from frosting, the
system will switch into fan mode automatically, and promptly
return to cooling mode.
● When the room temperature drops to the set temperature,
the compressor goes off and the IDU switches to fan mode;
when the temperature increases, the compressor starts
again. It is same in heating mode.
Symptom 3: White mist comes out of unit
Symptom 3.1: IDU
● When humidity is high during cooling operation, if the interior
of the IDU is dirty, the indoor temperature distribution will be
uneven. The interior of the IDU needs to be cleaned. Ask the
dealer for detailed information on how to clean the unit. This
operation requires a qualified service person
Symptom 3.2: IDU, ODU
● When the system switches over to heating operation
after defrost operation, moisture generated by defrosting
becomes steam and is discharged.
Symptom 4: Air conditioner generates noise during cooling
Symptom 4.1: IDU
● 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 COOL mode or stops.
This noise can be heard when the drainage pump is running
(optional accessory).
A "pishi-pishi" squeaking sound is heard when the system
stops after heating operation.
Expansion and contraction of plastic parts caused by
temperature changes can make this noise.
Symptom 4.2: IDU, ODU
● A continuous low hissing sound is heard when the system is
in operation.
This is the sound of refrigerant gas flowing through both the
IDU and ODU.
● A hissing sound is heard when the system starts or stops
operation or after the defrosting operation has been
completed.
This is the noise of refrigerant that occurs when it stops
flowing or its flow changes.
Symptom 4.3: ODU
● When the tone of operating noise changes, the noise is
caused by the change of frequency.
Symptom 5: Dust comes out of the unit
● When the unit is being used for the first time after a long
period of disuse, dust has got into the unit, which leads to
this symptom.
Symptom 6: The units give off odours
●
This unit will absorb the odours of rooms, furniture, cigarettes
and others, and then disperse the odours again.
●
During operation, the speed of the fan is controlled to
optimize product performance.
Symptom 7: The ODU fan does not spin.
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 of this unit. Law requires
that the collection, transportation and disposal of refrigerants
must conform with the regulations governing the collection and
destruction of hydrofluorocarbons.
Installation Manual
10 Precautions
● Before installing the unit, ensure that all Local, National
and International regulations are satisfied, and read these
“PRECAUTIONS” carefully.
● The precautions described below include important items
regarding safety. They must be strictly observed.
● After the installation work, perform a test run to check for any
problems.
● Explain how to use and maintain the unit to the customer
following the Owner's Manual.
● Turn off the main power supply breaker before maintaining the
unit.
● Retain the Installation Manual and the Owner's Manual.
● Specialized tools are required for the installation of
air conditioner with new refrigerant (R32).
Caution
THIS AIR CONDITIONER ADOPTS THE NEW HFC
REFRIGERANT(R32) WHICH DOES NOT DESTROY THE
OZONE LAYER.
The characteristics of R32 refrigerant are: it is a hydrophilic,
oxidizing membrane or oil, and its pressure is approx. 1.6 times
higher than that of refrigerant R22. Accompanied with the new
refrigerant, refrigerating oil has also been changed. Therefore,
during installation work, be sure that water, dust, former
refrigerant, or refrigerating oil does not enter the refrigerating
cycle.
To prevent charging an incorrect refrigerant and refrigerating oil,
the sizes of connecting sections of charging port of the main unit
and installation tools are different from those for the conventional
refrigerant.
This means that exclusive tools are required for the new
refrigerant (R32):
For connecting pipes, use new and clean piping designed for
R32, and please take care so that water or dust does not enter.
In addition, do not use the existing piping because there are
problems with pressure-resistance force and impurities in it.
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