Hitachi RAS-18GH5 User manual

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ENGLISH
SPLIT TYPE AIR CONDITIONER
INDOOR UNIT/OUTDOOR UNIT
MODEL
RAS-18GH5/RAC-18GH5
OUTDOOR UNIT INDOOR UNIT
RAS-18GH5
Instruction manual Page 1~26
To obtain the best performance and ensure years of trouble
free use, please read this instruction manual completely.
Bedlenungsanleitung Suite 27~52
Bitte lesen Sie diese Bedienungsanleitung aufmerksam
durch, um durch richtige Bedienung jahrelangen und
störungsfreien Betrieb zu gewährleisten.
Mode d’emploi Page 53~78
Des performances optimales et un fonctionnement à
long terme seront assurés en appliquant les présentes
instructions après avoir entièrement lu ce mode d’emploi.
Manuale di istruzioni Pag. 79~104
Per garantire la migliore prestazione e la più lunga
durataleggere attentamente e al completo le seguanti
istruzioni.
Manual de instrucciones Página 105~130
Para obtener el mejor funcionamiento y asegurar años de
uso libre de problemas, lea cuidadosamente este manual
de instrucciones.
Manual de instruções Página 131~156
Afim de obter um bom funcionamento e de garantir uma
utilização sem falhas durante muitos anos, é favor ler este
manual de instruções completamente.
O‰ËÁ›Â XÂÈÚÈÛÌÔ‡ ™ÂÏ›‰ 157~182
°È ÙËÓ ÎχÙÂÚË ‰ÓÙ‹ ‰ÔÛË ÎÈ ÙËÓ ÌÎÚÔÚÓÈ
ÎÈ Ú› ÚÔ‚Ï‹ÌÙ Ú‹ÛË ÙË ÛÛÎÂ‹ Ù‹,
ÚÎÏԇ̠‰È‚¿ÛÙ Ï‹Ú ÙÈ Ô‰ËÁ›Â ÂÈÚÈÛÌÔ‡ ÙË.
Инструкция по эксплуатации стр. 183~208
Для обеспечения наилууших эксплуатационных
характеристик и многолетней безотказной работы
оборудования необходимо полностыо оэнакомиться с
данной Инструкцией по эксплуатации.
RAC-18GH5

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!
SAFETY PRECAUTION
PRECAUTIONS DURING OPERATION
●Avoid an extended period of direct air flow for your health.
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●Do not insert a finger, a rod or other objects into the air outlet or inlet. As
the fan is rotating at a high speed, it will cause injury. Before cleaning, be
sure to stop the operation and turn the breaker OFF.
●During thunder storm, disconnect and turn off the circuit breaker.
●Do not use any conductor as fuse wire, this could cause fatal accident.
!
Make sure to connect earth line.
Indicates the instructions that must be followed.
The sign in the figure indicates prohibition.
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
● Should abnormal situation arises (like burning smell), please stop operating the
unit and turn off the circuit breaker. Contact your agent. Fault, short circuit or fire
may occur if you continue to operate the unit under abnormal situation.
● Please contact your agent for maintenance. Improper self maintenance may cause
electric shock and fire.
● Please contact your agent if you need to remove and reinstall the unit. Electric
shock or fire may occur if you remove and reinstall the unit yourself improperly.
● If the supply cord is damaged, it must be replaced by the special cord obtainable at
authorized service/parts centers.
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WARNING
PRECAUTIONS DURING INSTALLATION
●Do not reconstruct the unit.
Water leakage, fault, short circuit or fire may occur if you reconstruct the
unit by yourself.
●Please ask your sales agent or qualified technician for the installation of your
unit. Water leakage, short circuit or fire may occur if you install the unit by
yourself.
●Please use earth line.
Do not place the earth line near water or gas pipes, lightning-conductor, or
the earth line of telephone. Improper installation of earth line may cause
electric shock.
●Be sure to use the specified piping set for R410A. Otherwise, this may result
in broken copper pipes or faults.
●A circuit breaker should be installed depending on the mounting site of the
unit. Without a circuit breaker, the danger of electric shock exists.
●Do not install near location where there is flammable gas. The outdoor unit
may catch fire if flammable gas leaks around it.
●Please ensure smooth flow of water when installing the drain hose.
CAUTION
!
!
● Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.
● Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters which,
if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which may
result in serious consequences if not observed properly. Please observe all instructions strictly to ensure safety.
● The sign indicate the following meanings.
● Please keep this manual after reading.

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ENGLISH
PRECAUTIONS DURING OPERATION
Do not attempt to operate the unit with wet hands, this could cause fatal
accident.
When operating the unit with burning equipments, regularly ventilate the
room to avoid oxygen insufficiency.
Do not direct the cool air coming out from the air-conditioner panel to face
household heating apparatus as this may affect the working of apparatus
such as the electric kettle, oven etc.
Do not place plants directly under the air flow as it is bad for the plants.
Please ensure that outdoor mounting frame is always stable, firm and
without defect. If not, the outdoor unit may collapse and cause danger.
Do not splash or direct water to the body of the unit when cleaning it as
this may cause short circuit.
When operating the unit with the door and windows opened, (the room humidity is always above
80%) and with the air deflector facing down or moving automatically for a long period of time,
water will condense on the air deflector and drips down occasionally. This will wet your furniture.
Therefore, do not operate under such condition for a long time.
If the amount of heat in the room is above the cooling or heating capability of the unit (for
example: more people entering the room, using heating equipments and etc.), the preset room
temperature cannot be achieved.
Do not climb on the outdoor unit or put objects on it.
Please switch off the unit and turn off the circuit breaker during cleaning,
the high-speed fan inside the unit may cause danger.
Turn off the circuit breaker if the unit is not to be operated for a long period.
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The product shall be operated under the manufacturer specification and
not for any other intended use.
Do not put water container (like vase) on the indoor unit to avoid water
dripping into the unit. Dripping water will damage the insulator inside the
unit and causes short-circuit.
Do not use any aerosol or hair sprays near the indoor unit. This chemical
can adhere on heat exchanger fin and blocked the evaporation water
flow to drain pan. The water will drop on tangential fan and cause water
splashing out from indoor unit.

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NAMES AND FUNCTIONS OF EACH PART
OUTDOOR UNIT
Drain pipe
Condensed water drain to outside.
Connecting cord and insulation pipe for piping
Air inlet (Back and Left side)
Air outlet
WIDTH (mm)
1030
850
MODEL
RAS-18GH5
RAC-18GH5
HEIGHT (mm)
295
650
DEPTH (mm)
207
298
MODEL NAME AND DIMENSIONS
INDOOR UNIT
PRE-FILTER
To prevent dust from coming into the indoor unit.
(Refer page 21)
FRONT PANEL
INDOOR UNIT INDICATORS
Light indicator showing the operating condition.
(Refer page 5)
HORIZONTAL DEFLECTOR VERTICAL
DEFLECTOR (AIR OUTLET)
(Refer page 16)
REMOTE CONTROLLER
Send out operation signal to the indoor unit. So as
to operate the whole unit.
(Refer page 6)

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ENGLISH
INDOOR UNIT INDICATORS
AUTO RESTART SWITCH
In the event of power failure, the air conditioner will restart automatically in the previously selected mode
once the power is restored.
In the event of power failure during TIMER operation, the timer will be reset and the unit will begin or stop
operating under a new timer setting.
OPERATION INDICATOR
This figure shows the opening condition of
front panel. Refer to page 20 in relation to
how to open or close the front panel.
TIMER LAMP
This lamp lights when the timer is working.
OPERATION LAMP
This lamp lights during operation.
The OPERATION LAMP flashes in the following cases
during heating.
(1) During preheating
For about 2–3 minutes after starting up.
(2) During defrosting
Defrosting will be performed about once an hour
when frost forms on the heat exchanger of the
outdoor unit, for 5–10 minutes each time.
FILTER LAMP
When the device is operated for a total of about 200
hours, the FILTER lamp lights to indicate that it is
time to clean the filter. The lamp goes out when the
“ (AUTO SWING)” button is pressed while the
device is on “STANDBY MODE”.

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NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT
REMOTE CONTROLLER
This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting
is controlled electronically, the range of control may be shorter.
This unit can be fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit
can be controlled from the remote controller.
Signal emitting window/transmission sign
Point this window toward the indoor unit when controlling it.
The transmission sign blinks when a signal is sent.
Display
This indicates the room temperature selected, current time, timer status,
function and intensity of circulation selected.
START/STOP button
Press this button to start operation. Press it again to stop operation.
SLEEP button
Use this button to set the sleep timer.
TEMPERATURE buttons
Use these buttons to raise or lower the temperature setting. (Keep pressed,
and the value will change more quickly.)
TIME button
Use this button to set and check the time and date.
RESET buttons
FUNCTION selector
Use this button to select the operating mode. Every time you press it,
the mode will change from (AUTO) to (HEAT) to (DEHUMIDIFY)
to (COOL) and to (FAN) cyclically.
FAN SPEED selector
This determines the fan speed. Every time you press this button, the
intensity of circulation will change from (AUTO) to (HI) to (MED)
to (LOW) (during the (FAN) mode, from HI to MED to LOW).
AUTO SWING button
Controls the angle of the horizontal air deflector.
TIMER control
Use this button to set the timer.
OFF-TIMER button Select the turn OFF time.
ON-TIMER button Select the turn ON time.
RESERVE button Time setting reservation.
CANCEL button Cancel time reservation.
Precautions for Use
Do not put the remote controller in the following places.
Under direct sunlight.
In the vicinity of a heater.
Handle the remote controller carefully. Do not drop it on the floor,
and protect it from water.
Once the outdoor unit stops, it will not restart for about 3 minutes
(unless you turn the power switch off and on or unplug the power
cord and plug it in again).
This is to protect the device and does not indicate a failure.
If you press the FUNCTION selector button during operation, the
device may stop for about 3 minutes for protection.

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ENGLISH
RESET
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT, COOL or DEHUMIDIFY depending on the
initial room temperature. The selected mode of operation will not change when the room temperature varies.
As the settings are stored in memory in the remote controller, you only have to
press the (START/STOP) button next time.
Press the FUNCTION selector so that the display indicates the (AUTO)
mode of operation.
When AUTO has been selected, the device will automatically determine
the mode of operation, HEAT, COOL or DEHUMIDIFY depending on
the initial room temperature.
Press the (START/STOP) button.
Operation starts with a beep.
Press the button again to stop operation.
You can raise or lower the temperature setting as necessary by maximum of 3°C.
Press the temperature button and the temperature setting
will change by 1°C each time.
The preset temperature and the actual room temperature may vary
somewhat depending on conditions.
The display does not indicate the preset temperature in the AUTO mode.
If you change the setting, the indoor unit will produce a beep.
1
START
STOP
Over 27°C COOL
23~27°C
Under 23°C HEAT
Temperature settingFunction
27°C
23°C
Slightly lower than the
room temperature LOW
FAN SPEED
HI at start, MED or LOW
after the preset temperature
is reached
HI at start, MED or LOW
after the preset temperature
is reached
--
DEHUMIDIFY
-
Initial room temperature
(approx.)
Condition of Automatic Operation

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HEATING OPERATION
Use the device for heating when the outdoor temperature is under 21°C.
When it is too warm (over 21°C), the heating function may not work in order to protect the device.
In order to keep reliability of the device, please use this device above –10°C of the outdoor temperature.
Press the FUNCTION selector so that the display indicates
(HEAT).
Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).
(AUTO): The fan speed is HI at first and varies to MED
automatically when the preset temperature has
been reached.
(HI) : Economical as the room will become warm
quickly.
But you may feel a chill at the beginning.
(MED) : Quiet.
(LOW) : More quiet.
Set the desired room temperature with the TEMPERATURE
buttons (the display indicates the setting).
The range of 18-22°C is recommended as the
room temperature for heating.
If the temperature setting is 20°C, the room
temperature will be controlled at around 20°C.
The temperature setting and the actual room temperature may
vary somewhat depending on conditions.
Press the (START/STOP) button. Heating operation starts
with a beep. Press the button again to stop operation.
As the settings are stored in memory in the remote controller, you
only have to press the (START/STOP) button next time.
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START
STOP

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ENGLISH
RESET
˚C
˚C
DEHUMIDIFYING OPERATION
Use the device for dehumidifying when the room temperature is over 16°C.
When it is under 15°C, the dehumidifying function will not work.
Dehumidifying Function
When the room temperature is higher than the temperature setting: The device will dehumidify the room,
reducing the room temperature to the preset level.
When the room temperature is lower than the temperature setting: Dehumidifying will be performed at
the temperature setting slightly lower than the current room temperature, regardless of the temperature
setting. The function will stop (the indoor unit will stop emitting air) as soon as the room temperature
becomes lower than the setting temperature.
Set the desired room temperature with the TEMPERATURE
button (the display indicates the setting).
The range of 20-26˚C is recommended as
the room temperature for dehumidifying.
Press the (START/STOP) button. Dehumidifying operation
starts with a beep. Press the button again to stop operation.
2
As the settings are stored in memory in the remote controller, you
only have to press the (START/STOP) button next time.
START
STOP
Press the FUNCTION selector so that the display
indicates (DEHUMIDIFY).
The FAN SPEED is set at LOW automatically.
The FAN SPEED button does not work.
1

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C
RESET
˚
C
COOLING OPERATION
Use the device for cooling when the outdoor temperature is 22-42°C.
If indoor humidity is very high (over 80%), some dew may form on the air outlet grille of the indoor unit.
Press the FUNCTION selector so that the display indicates
(COOL).
Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).
(AUTO): The FAN SPEED is HI at first and varies to MED
automatically when the preset temperature has
been reached.
(HI) : Economical as the room will become cool quickly.
(MED) : Quiet.
(LOW) : More quiet.
Set the desired room temperature with the TEMPERATURE
button (the display indicates the setting).
The range of 25-28°C is recommended as the
room temperature for cooling.
If the temperature setting is 27°C, the room
temperature will be controlled at around 27°C.
The temperature setting and the actual room temperature may
vary some how depending on conditions.
Press the (START/STOP) button. Cooling operation starts
with a beep. Press the button again to stop operation. The
cooling function does not start if the temperature setting is
higher than the current room temperature (even though the
(OPERATION) lamp lights). The cooling function will start
as soon as you set the temperature below the current room
temperature.
As the settings are stored in memory in the remote controller, you
only have to press the (START/STOP) button next time.
1
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3
START
STOP