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5.2.2 Cooling, heating, fan only
and auto operations
The indoor units in the air conditioner can be controlled
separately, but the indoor units in the same refrigerant
system cannot operate in the heating and cooling
modes at the same time.
When the cooling and heating modes conflict, the mode
is determined based on the setting of the " Menu mode"
of the outdoor unit.
5.2.3 Heating operation
It may take longer to reach the set temperature for
general heating operation than for cooling operation.
The following operation is performed in order to prevent
the heating capacity from dropping or cold air from
blowing
Defrost Operation
In the heating operation, as the outdoor temperature
decreases, frost may be formed on the heat exchanger
in the outdoor unit, making it more difficult for the heat
exchanger to heat up the air. The heating capacity
decreases, and a defrosting operation needs to be
performed on the system in order for the system to
provide sufficient heat to the indoor unit. At this point,
the indoor unit will show "dF" on the display screen.
The indoor fan motor will automatically stop running so
as to prevent cold air from coming out of the indoor unit
when the heating operation starts. This process will
take some time. This is not a malfunction.
INFORMATION
i
In heating mode, the air-conditioning system
absorbs heat from the outdoor air and
releases heat to the indoor side. When the
outdoor temperature is low, less heat is
released. This is the principle of heat pump.
When the outdoor temperature is extremely
low,
the
heating
conditioner decreases, and other heating
equipment may need to be added.
5.2.4 To operate the system
Press the operation mode selector button on the user
interface and select the operation mode.
Press the ON/OFF button on the user interface.
Result: The running light turns on and the system starts
to run.
Stop
Press the ON/OFF button on the user interface.
Result: The running light is off, and the system stops
running.
NOTE
Once the unit has stopped running, do not
disconnect the power immediately. Wait for at
least 10 minutes.
Adjust
Refer to the user manual for the controller on how to set
the required temperature, fan speed and air flow
direction.
capacity
of
the
air
5.3 Dry Program
5.3.1 System operations
The function in this program uses the minimum
temperature drop (minimum indoor cooling) to bring
about a drop in humidity in the room.
The temperature and fan speed cannot be set.
6 MAINTENANCE AND SERVICE
Never inspect or service the unit by yourself.
Ask a qualified service person to perform this
work.
Never replace a fuse with a fuse of a wrong
ampere ratings or other wires when a fuse
blows out. Use of wire or copper wire may
cause the unit to break down or cause a fire.
Do not insert fingers, rods or other objects
into the air inlet or outlet. Do not remove the
fan guard. When the fan is rotating at high
speed, it will cause injury.
After a long use, check the unit stand and
fitting for damage. If damaged, the unit may
fall and result in injury.
When the fuse melts, do not use any
unspecified fuse or other wire to replace the
original fuse. The use of electrical wires or
copper wires may cause the unit to
malfunction or cause a fire.
Do not insert fingers, sticks, or other items
into the air inlet or outlet. Do not remove the
fan mesh cover. When the fan rotates at a
high speed, it may cause bodily injury.
It is very dangerous to check the unit when
the fan is rotating.
Make sure you turn off the main power switch
before any maintenance work begins.
Do check the supporting and base structure
of the unit for any damages after a long
period of use. The unit may drop and cause
personal injury if there is any damage.
3
CAUTION
WARNING
CAUTION
WARNING
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