Heat pump type heating applies the mechanism that draws the heat from the outside air to warm up the room by means of the refrigerant.
• Defrost operation
During heating with a heat pump type air conditioner, frost will be formed on the outdoor unit if the temperature outside the room drops. If left alone, the
heating efficiency decreases. In order to deal with this, the operation is automatically switched to defrost operation to remove the frost. During the period,
the airflow of indoor/outdoor unit is stopped and “heating defrost” is displayed.
• Outer air temperature and heating capacity
The heating efficiency of heat pump type air conditioner decreases as the outside temperature becomes lower. If the capacity of air conditioner for heating
is not sufficient, please use other heating device.
• Time required until the room temperature increases
A heat type air conditioner circulates warm air to warm the entire room, so it takes a while to rise up the room temperature. It is recommended to start
operation earlier on a very cold day.
• When room temperature adjusting device operates during heating
If room temperature rises and the room temperature adjusting device is activated, the airflow becomes automatically low. When the room temperature
drops, it switched back automatically to the normal operation.
“(PREPARATION OF HEATING)” is displayed in the remote control display area in the following cases.
For wireless devices, the run/check display lamp on the main body display unit will flash green.
Setting temperature and preparation of heating are displayed on the wired remote control.
• At Starting Heating Operation
In order to prevent cool air from blowing out, the airflow into the room may be stopped depending on the room temperature at the
start of heating operation. please wait for a while and the operation automatically switches to the normal heating operation.
• At defrost operation (during heating operation)
When frost may easily formed on the outdoor unit, the heating operation automatically is stopped (both indoor/outdoor unit
stop fan operation) for approximately 5 to 10 minutes per hour and defrosting is operated. After the defrosting is complete, the
operation automatically switches back to the normal operation.
CASES WHEN “(PREPARATION OF HEATING)” IS DISPLAYED
NOTICE
An auto restart function, which is disabled at the factory setting, is applicable to the remote control. Consult your dealer.
What is auto restart
• When a power failure occurs or the power supply is turned off, the function allows the system to automatically resume operation with the remote control
setting made set before the power failure when the power supply recovers. If the system is stopped before power failure it remains stopped after the power
recover.
•Note that in the following cases it is needed to set again with the remote control.
1
Timer setting is cancelled. But the sleep timer recovers after power failure recovers. When recovering from a power failure, holiday setting will override
the weekly timer setting. And time setting returns to default. To return to original setting, after time setting, execute “holiday cancel”.
2
Louver stops at the horizontal position.
CAUTION
Make sure to stop the operation before turning off the power supply when the auto restart function is enabled. (If the power supply is turned off while the
system is operating, the indoor unit fan will start immediately when the power supply is turned on. In addition, the outdoor unit starts operating 3 minutes
after the power supply is turned on.)
AUTO RESTART<WIRED REMOTE CONTROL>
The following button operations can be disabled. If the button is pressed, “” is displayed indicating that the button is disabled,
and the original display returns. Consult your dealer for “
” setting.
1
button
2
TEMP button
3
LOUVER button
4
MODE button
5
FAN SPEED button
6
TIMER button
SETTING TO DISABLE BUTTON OPERATION <Wired remote control>
NOTICE
Please observe the following points in order to use the air conditioner in a safe and comfortable manner.
Make sure to request your dealer for installation, and do not attempt to do by yourself.
Is the system installed in a well-ventilated place?
Are there any obstacles? If so, it leads to the decrease of the efficiency and the increase of operation noise.
Avoid the place where cool/warm air and operation noise cause problems to your neighbors.
INSTALLATION LOCATION
Normally the efficiency of the air conditioning system will become lower after a while, because dirt accumulates inside the system. This occurs gradually in
around 3 years of use, depending on the condition of use and surrounding environment. It is thus necessary to conduct inspection maintenance in addition
to regular maintenance. We recommend you to consult the dealer from whom you purchased the system and make a contract for periodical inspection.
(charged).
INSTALLATION, RELOCATION, AND INSPECTION MAINTENANCE
Warning : Make sure to consult a dealer or specialist if it is required to relocate and reinstall the air conditioning system.
If the air conditioning system is installed incorrectly, water leakage, electric shock and/or fire may occur. Note that an installation fee will be
charged for relocation and installation.
Caution : Make sure to perform grounding work
Do not connect the ground wire to any gas pipe, water pipe, or wires of lightning conductors and telephones. If the ground work is not good, it
may lead to electric shock.
Caution : A leakage breaker is necessary depending on the installation environment.
If it is not mounted there, it may lead to electric shock.
Only qualified specialists of electrical and grounding work can do these works according to “electric equipment technical standards”.
Is the wiring designated for the air conditioner?
Is the remote control mounted correctly?
•In the case of exposed wiring, is the wiring fixed with the attached screw?
•Is the attached remote control clamps used for fixing the remote control cord?
•Is the remote control mounted at a height where children cannot reach?
ELECTRICAL WORK
RELOCATION
INSPECTION MAINTENANCE
Cooling
operation
Dry operation
Heating
operation
Room temperature
Approximately
21 to 32°C
Long continuous operation under
approximately 21°C may lead to malfunction
due to dewfall
Approximately
27°C or less
Temperature outside the room
Approximately -5 to 43°C
Approximately
-10 to 21°C
If outside air temperature becomes low, the
heating efficiency is lowed and the heating
becomes difficult.
Humidity inside the room
Approximately 80% or less
Long operation under high humidity may leads to
waterdrop or smoky vapor at the supply air grille.
OPERATION RANGE
Please use the system in the following operation range. If the system is operated outside this range, the protection controls may be activated to prevent
malfunction.
CAUTION
(Note) Operation range may differ depending on models .Please check the catalog.
TROUBLE SHOOTING
The phenomena mentioned below is not malfunction.
Slapping sounds are heard.These sounds are generated when plastic components are expanded or shrunk by the heat and rubbed with
each other.
Hissing sounds are heard
when the operation is
stopped or during defrost
operation.
These sounds are generated when the refrigerant valve inside the air conditioning system is activated.
The air conditioner starts
operation automatically as
soon as the power supply is
turned on.
In case the automatic restart function is enabled, and when the power supply recovers, the system restarts
the operation automatically as same condition as before power supply is cut.
☞
See below
The setting temperature
cannot be changed (the
setting temperature display
flashes).
If changing the set temperature is prohibited on the remote control, it is not possible to change the
temperature setting even
▼ or ▲ is pressed.
☞
See right
In case of wireless remote
control, the unit does not
operate with the inspection
display light on the indoor
unit flashing even though
any button on the remote
control is pressed.
In case the system is controlled by the other centralized remote control and it forbids operating the system
from the remote control, it is not possible to operate by the remote control.
Even if the wired remote
control is operated, “central
control” light only flashes
and doesn’t operate.
Is not “central controlling” or “center” displayed?
If controlled with a separately purchased center console etc., the unit cannot be operated by the remote
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