Hitachi RAS-S18CXK User manual

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ENGLISH
INDOOR UNIT/OUTDOOR UNIT
MODEL
RAS-S18CXK/RAC-S18CXK
OUTDOOR UNIT INDOOR UNIT
Instruction manual Page 1~22
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
RAS-S18CXK
RAC-S18CXK
SPLIT TYPE AIR CONDITIONER

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!
SAFETY PRECAUTION
●
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.
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.
●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
!
!
PRECAUTIONS DURING OPERATION
●Avoid an extended period of direct air flow for your health.
W
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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.
W
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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 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.
●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.
●This appliance is not intended for use by young children or infirm persons unless they have been
adequately supervised by a responsible person to ensure that they can use the appliance safely.
●Young children should be supervised to ensure that they do not play with the appliance.
●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 place plants directly under the air flow as it is bad for the plants.

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INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
Air filter
To prevent dust from coming into the indoor unit.
(Refer page 17)
Front panel
Indoor unit indicators
Light indicator showing the operating condition.
(Refer page 5)
Horizontal deflector ●Vertical deflector
(Air Outlet)
(Refer page 12)
Remote controller
Send out operation signal to the indoor unit. So as to
operate the whole unit.
(Refer page 6)
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-S18CXK
RAC-S18CXK
HEIGHT (mm)
295
650
DEPTH (mm)
191
298
MODEL NAME AND DIMENSIONS

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ENGLISH
INDOOR UNIT INDICATORS
OPERATION INDICATOR
●This figure shows the opening condition of
front panel. Refer to page 16 in relation to
how to open or close the front panel.
OPERATION LAMP
This lamp lights during operation.
TIMER LAMP
This lamp lights when the timer is working.
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”.
TEMPORARY
SWITCH
TEMPORARY
SWITCH
HITACHI
TEMPORARY SWITCH
●Use this switch to start and stop when the remote controller does not work.
●By pressing the temporary switch, the operation is done in automatic 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.
●Transmission sign
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.
●CIRCULATION button
Use this button to set air circulation in the room or start operation.
●DEHUMIDIFYING button
Use this button to reduce humidity in the room or start operation.
●COOLING button
Use this button to set cooling mode in the room or start operation.
●RESET button
●STOP button
Press this button to stop operation only.
●SLEEP button
Use this button to set the sleep timer.
●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)
●AUTO SWING button
Controls the angle of the horizontal air deflector.
●TEMPERATURE button
Use this button to raise or lower the temperature setting. (Keep
pressed, and the value will change more quickly.)
●OFF-TIMER button Select the turn OFF time.
●ON-TIMER button Select the turn ON time.
Precautions for Use
●Do not put the remote controller in the following places.
●In 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.
CIRCULATION / START
DEHUMIDIFY / START
COOLING / START
FAN
FAN SPEED
LOW
MED
HI
SLEEP TIMER
STOP
TIMER SELECTOR
ON TIMER
OFF TIMER
AUTO SWING

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ENGLISH
COOLING OPERATION
Use the device for cooling when the outdoor temperature is 21-43°C.
If indoor humidity is very high (over 80%), some dew may form on the air outlet grille of the indoor unit.
Press the button so that the display indicates
(COOL).
Cooling operation starts with a beep.
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.
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 or LOW automatically when the preset
temperature has been reached.
(HI) : Economical as the room will become cool
quickly.
(MED) : Fan speed slow.
(LOW) : Fan speed slower.
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 somewhat depending on conditions.
Press the (STOP) button to stop operation.
■As the settings are stored in memory in the remote controller, you
only have to press the (COOLING) button next time.
1
2
STOP
3

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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.
■As the settings are stored in memory in the remote controller, you only
have to press the (DEHUMIDIFY) button next time.
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.
2
Press the button so that the display indicates
(DEHUMIDIFY).
Dehumidifying operation starts with a beep.
The FAN SPEED is set at LOW automatically.
The FAN SPEED button does not work.
1
Press the (STOP) button to stop operation.
STOP

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ENGLISH
CIRCULATION OPERATION
Press the button so that the display indicates
(CIRCULATION).
Circulating operation starts with a beep.
Press the FAN SPEED button and select the desired FAN
SPEED (the display indicates your choice).
Press the temperature control button to set to the desired
temperature.
■As the settings are stored in memory in the remote controller,
you only have to press the (CIRCULATION) button next time.
2
1
3
Press the (STOP) button to stop operation.
STOP
■Circulation Function
●During circulation operation, compressor will not be running and there is no cooling operation with only
indoor fan running.
●When the setting temperature is higher than room temperature, indoor fan will stop running.

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HOW TO SET THE SLEEP TIMER
Press the (SLEEP) button, and the display changes as shown below.
Mode
Sleep timer
Indication
1 hour 2 hours 3 hours 7 hours
Sleep timer off
44 44
1
Sleep Timer: The device will continue working for the designated
number of hours and then turn off.
Point the signal window of the remote controller toward the indoor
unit, and press the SLEEP button.
The timer information will be displayed on the remote controller.
The TIMER lamp lights with a beep from the indoor unit. When the
sleep timer has been set, the display indicates the turn-off time.
Cooling
“”
and
dehumidifying
“”
Explanation of the sleep timer
The device will control the FAN SPEED and room temperature automatically
so as to be quiet and good for people’s health.
You can set the sleep timer to turn off after 1, 2, 3 or 7 hours. The FAN
SPEED and room temperature will be controlled as shown below.
Function Operation
The room temperature will be
controlled 2°C above the
temperature and the FAN
SPEED will be set to LOW
setting 60 minutes after the
setting of the sleep timer.
Operation with the sleep timer
SLEEP

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ENGLISH
HOW TO SET THE TIMER
■ON Timer and OFF Timer are available.
OFF TIME setting
●Select the OFF TIME by pressing the (OFF) Button.
●Setting time will change according to the below sequence
when you press the button.
OFF Timer Reservation
■Operation stop at setting time
1 2 3 9 10 11 12
1 hour interval
(CANCEL OFF TIMER)
ON TIME setting
●Select the ON TIMER by pressing the (ON)
Button.
●Setting time will change according to the below
sequence.
ON Timer Reservation
1 2 3 9 10 11 12
1 hour interval
(CANCEL ON TIMER)
■Operation will start for setting
temperature at setting time (The starting
time may different depend on the room
temperature and set temperature).

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Adjustment of the conditioned air in the upward and
downward directions.
According to “Dehumidifying”or “Cooling”operation, the
horizontal air deflector is automatically set to the proper
angle suitable for each operation. The deflector can be
swing up and down and also set to the desired angle
using the “(AUTO SWING)”button. (If the angle
of the deflector is changed, it will not return to the auto-
set position after operations start unless the operation
mode is switched.)
ADJUSTING THE AIR DEFLECTORS
1
2
Adjustment of the conditioned air to the left and
right.
Hold the vertical air deflector as shown in the figure
and adjust the conditioned air to the left and right.
●If the “(AUTO SWING)”button is pressed once,
the horizontal air deflector swings up and down. If the button
is pressed again, the deflector stops in its current position.
Several seconds (about 6 seconds) may be required
before the deflector starts to move.
●In “Cooling”operation, do not keep the horizontal air
deflector swinging for a long time. Some dew may form
on the horizontal air deflector and dew may drop.

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ENGLISH
HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER
1
Remove the cover as shown in the figure and
take out the old batteries.
=
2
Install the new batteries.
The direction of the batteries should match the
marks in the case.
1. Do not use new and old batteries, or different kinds
of batteries together.
2. Take out the batteries when you do not use the remote
controller for 2 or 3 months.
3. Use high quality and high performance AAA batteries to
avoid short operating life and electrolyte leakages
CAUTION
!
When using the remote control, if there is no response from the air conditioner unit and or the remote
control has fading and dim displays, the batteries in the remote control device need to be removed and
replaced with new ones

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Suitable Room Temperature Install curtain or blinds
Ventilation Effective Usage Of Timer
Do Not Forget To Clean The Air Filter Please Adjust Suitable Temperature
For Baby And Children
Warning
Freezing temperature
is bad for health and a
waste of electric power.
!
It is possible to
reduce heat
entering the
room through
windows.
At night, please use the “OFF or ON timer
operation mode”, together with your wake up
time in the morning. This will enable you to
enjoy a comfortable room temperature. Please
use the timer effectively.
Dusty air filter will reduce the air volume and
the cooling efficiency. To prevent from wasting
electric energy, please clean the filter every 2
weeks.
Please pay attention to the room temperature
and air flow direction when operating the unit
for baby, children and old folks who have
difficulty in movement.
Caution
Do not close the room for a long period of
time. Occasionally open the door and windows
to allow the
entrance of
fresh air.
!
THE IDEAL WAYS OF OPERATION

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ENGLISH
FOR USER’S INFORMATION
The Air Conditioner And The Heat Source In The Room
Not Operating For A Long Time
When Lightning Occurs
Caution
If the amount of heat in the room is above the cooling
capability of the air conditioner (for example: more
people entering the room, using heating equipments
and etc.), the preset room temperature cannot be
achieved.
!
When the indoor unit is not to be used for a long
period of time, please switch off the power from the
mains. If the power from mains remains “ON”, the
indoor unit still consumes about 8W in the operation
control circuit even if it is in “OFF” mode.
Warning
To protect the whole unit during lightning, please
stop operating the unit and remove the plug from the
socket.
!
OFF
Interference From Electrical Products
Inverter-type
fluorescent
lamp.
To prevent
interference,
place at least
1m away.
TV
Caution
To avoid noise interference, please place the indoor
unit and its remote controller at least 1m away from
electrical products.
!

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ATTACHING THE AIR CLEANSING FILTERS
1
Open the front panel.
●Pull up the front panel by holding it at both sides
with both hands.
2
Remove the filter.
●Push upward to release the claws and pull out the
filter.
3
4
Attach the filters.
●Attach the filters by ensuring that the surface written
“FRONT”is facing front.
●After attaching the filters, push the front panel at
three arrow portion as shown in figure and close it.
Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,
stop operation and switch off the power supply.
CAUTION
!
!
CAUTION
NOTE
Claws
(4 places)
Attaching the air cleansing filters to the filter.
●Attach the air cleansing filters to the frame by gently
compress its both sides and release after insertion
into filter frame.
Do not bend the air cleansing
filter as it may cause damage
to the structure.
●In case of removing the air cleansing filters, please follow the above procedures.
●The cooling capacity is slightly weakened and the cooling speed becomes slower when the air
cleansing filters are used. So, set the fan speed to "HIGH" when using it in this condition.
●Air cleansing filters are washable and can be use in 1 year time. Type number for this air cleansing
filter is <SPX-CFH18>. Please use this number for ordering when you want to renew it.
●Do not operate the air conditioner without filter. Dust may enter the air conditioner and fault may occur.

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ENGLISH
MAINTENANCE
Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,
stop operation and switch off the power supply.
1. AIR FILTER
Clean the air filter, as it removes dust inside the room. In case the air filter is full of dust, the air flow
will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean the
filter following the procedure below.
!
CAUTION
1
Open the front panel and remove the filter
●Gently lift and remove the air cleansing filter
from the air filter frame.
2
3
●Re-insert the air cleansing filter to the filter
frame. Set the filter with “FRONT”mark facing
front, and slot them into the original state.
●After attaching the filters, push the front panel
at three arrow portions as shown in figure
and close it.
!
CAUTION
●Do not wash with hot water at more than 40°C. The filter may shrink.
●When washing it, shake off moisture completely and dry it in the shade; do not expose it directly to
the sun. The filter may shrink.
●Do not use detergent on the air cleansing filter as some detergent may deteriorate the filter
electrostatic performance.
PROCEDURE
Vacuum dust from the air filter and air cleansing
filter using vacuum cleaner. If there is too much
dust, rinse under running tap water and gently
brush it with soft bristle brush. Allow filters to
dry in shade.
NOTE:
●Air cleansing filter should be cleaned every month or sooner if noticeable loading occurs. When
used overtime, it may loose its deodorizing function. For maximum performance, it is recommended
to replace it every 1 year depending on application requirements.

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2. Washable Front Panel
●Remove the front panel and wash with clean
water.
Wash it with a soft sponge.
After using neutral detergent, wash thoroughly
with clean water.
●When front panel is not removed, wipe it with
a soft dry cloth. Wipe the remote controller
thoroughly with a soft dry cloth.
●Wipe the water thoroughly.
If water remains at indicators or signal
receiver of indoor unit, it causes trouble.
Method of removing the front panel.
Be sure to hold the front panel with both hands
to detach and attach it.
!
CAUTION
●Do not splash or direct water to the body of the unit when cleaning
it as this may cause short circuit.
●Never use hot water (above 40°C), benzine, gasoline, acid, thinner or
a brush, because they will damage the plastic surface and the coating.
Removing the Front Panel
Arm
●When the front panel is fully opened with
both hands, push the right arm to the inside
to release it, and while closing the front panel
slightly, put it out forward.
Attaching the Front Panel
●Move the projections of the left and right
arms into the Flanges in the unit and
securely insert them into the holes.
Projection
Hole
Flange
3. MAINTENANCE AT BEGINNING OF LONG OFF PERIOD
●Run the unit by setting the operation mode to
(CIRCULATION), the temperature to 16°C and the fan speed
to HI for about half a day on a fine day, and dry the whole
of the unit.
●Switch off the power plug.
Air
Blow

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ENGLISH
1
2
3
REGULAR INSPECTION
PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER
EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.
Is the earth line disconnected or broken?
Is the mounting frame seriously affected by rust and is the
outdoor unit tilted or unstable?
Is the plug of power line firmly plugged into the socket?
(Please ensure no loose contact between them).
Confirm
Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,
stop operation and switch off the power supply.
!
CAUTION
CAUTION
●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.
!
●A circuit breaker should be installed depending on the mounting site of the unit. Without a circuit
breaker, the danger of electric shock exists.
IMPORTANT
The wires in this mains lead are coloured in accordance with the following code:
Green-and-yellow : Earth
Blue : Neutral
Brown : Live
As the colours of the wires in the mains lead of this appliance may not correspond with the coloured
markings identifying the terminals in your plug, proceed as follows:
The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is
marked with the letter E or by the earth symbol or coloured green or green-and-yellow.
The wire which is coloured blue must be connected to the terminal which is marked with the letter N
or coloured black.
The wire which is coloured brown must be connected to the terminal which is marked with the letter
L or coloured red.
NOTE
If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service/
parts centers.

–20 –
AFTER SALE SERVICE AND WARRANTY
WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.
When it does not operate
●Is the fuse all right?
●Is the voltage extremely high or low?
●Is the circuit breaker “ON”?
●Was the air filter cleaned?
●Does sunlight fall directly on the outdoor unit?
●Is the air flow of the outdoor unit obstructed?
●Are the doors or windows opened, or is there any source of
heat in the room?
●Is the set temperature suitable?
CONDITION CHECK THE FOLLOWING POINTS
Notes
●In quiet or stop operation, the following phenomena may occassionally
occur, but they are not abnormal for the operation.
(1) Slight flowing noise of refrigerant in the refrigerating cycle.
(2) Slight rubbing noise from the fan casing which is cooled and then
gradually warmed as operation stops.
●The odor will possibly be emitted from the room air conditioner because
the various odor, emitted by smoke, foodstuffs, cosmetics and so on,
sticks to it. So the air filter and the evaporator regularly must be cleaned
to reduce the odor.
●Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above
inspections. Inform your agent of the model of your unit, production number, date of installation. Please also
inform him regarding the fault.
●Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach the
specified capacity.
When it does not cool well
When it does not hot well
Please note:
On switching on the equipment, particularly when the room light is dimmed, a slight brightness fluctuation
may occur. This is of no consequence.
The conditions of the local Power Supply Companies are to be observed.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified person in order to avoid a hazard.
NOTE: