Hitachi RAS-18CX9KS User manual

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SPLIT TYPE
INDOOR UNIT/OUTDOOR UNIT
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Instruction manual Page 1~28
To obtain the best performance and ensure years of trouble free use, please read this instruction manual
completely.
MODEL
RAS-18CX9KS/RAC-18CX9
RAS-24CX9KS/RAC-24CX9
RAS-18CX9KS
RAS-24CX9KS
RAC-18CX9
RAC-24CX9
OUTDOOR UNIT
INDOOR UNIT
RAS/RAC-18/24CX9KS (Cover) 28/10/05, 3:20 PM49

– 2 –
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 SHIFTING OR MAINTENANCE
PRECAUTIONS DURING OPERATION
●Avoid an extended period of direct air flow for your health.
W
A
R
N
I
N
G
●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.
●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.
W
A
R
N
I
N
G
●This unit has UV LED which emits ultra violet light.
AVOID DIRECT EYE EXPOSURE.

– 3 –
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.
●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.
C
A
U
T
I
O
N
●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.
●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.

– 4 –
INDOOR UNIT
OUTDOOR UNIT
WIDTH (mm)
1150
850
MODEL
RAS-18CX9KS, RAS-24CX9KS
RAC-18CX9, RAC-24CX9
HEIGHT (mm)
333
650
DEPTH (mm)
245
298
MODEL NAME AND DIMENSIONS
NAMES AND FUNCTIONS OF EACH PART
AIR FILTER
To prevent dust from coming into the
indoor unit.
(Refer page 23)
FRONT PANEL (AIR INLET).
INDOOR UNIT INDICATORS
Light indicator showing the operating
condition.
(Refer page 5)
HORIZONTAL DEFLECTOR ●
VERTICAL DEFLECTOR (AIR
OUTLET)
(Refer page 18)
REMOTE CONTROLLER
Send out operation signal to the indoor
unit. So as to operate the whole unit.
(Refer page 6)
●
Drain pipe
Condensed water drain to outside.
Connecting cord and insulation pipe for piping
Air inlet (Back and Left side)
Air outlet

– 5 –
ENGLISH
Press
Press
Temporary Switch
emporary Switch
Non-conductor Stick
Non-conductor Stick
INDOOR UNIT INDICATORS
TEMPORARY SWITCH
Use this switch to start and stop when the remote
controller does not work. [Use non-conductor stick
(example toothpick)]
●By pressing the temporary switch, the operation is
done in previously set operation mode.
●When the operation is done using the temporary switch
after the power source is turned off and turn on again,
the operation is done in automatic mode.
OPERATION INDICATOR
TIMER LAMP
This lamp lights when the timer is working.
OPERATION LAMP
This lamp lights during operation.
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”.

– 6 –
RESET
˚
CH
˚
CH
Signal Transmission
AUTO
COOL
DEHUMIDIFY
AIR CIRCULATION
FAN
FAN SPEED
HI
MED
LOW
SLEEPING
STOP (CANCEL)
START (RESERVE)
START/STOP
TIME
TIMER SET
TIMER SELECTOR
ON TIMER
OFF TIMER
AUTO SWING
SUPER SILENT
SUPER COOLING
NAMES AND FUNCTIONS OF EACH PART
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.
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.
●If you press the FUNCTION selector button during operation, the
device may stop for about 3 minutes for protection.
●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.
●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.
●SUPER SILENT button
Use this button to set silent condition.
●SUPER COOLING button
Use this button to set super cooling operation.
●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.
●TIME button
Use this button to set and check the time and date.
●RESET button
●FUNCTION selector
Use this button to select the operating mode. Every time you press it,
the mode will change from (AUTO) to (COOL) to (DEHUMIDIFY)
to (CIRCULATION) 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).
●PARALLEL SWING button
Controls the angle of the vertical air deflectors to parallel.
●SYMMETRY SWING button
Controls the angle of the vertical air deflectors to symmetry.
●TIMER control
Use this button to set the timer.
●RESERVE button Time setting reservation.
●CANCEL button Cancel time reservation.

–7 –
ENGLISH
RESET
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, COOL or DEHUMIDIFY depending on the
initial room temperature. The selected mode of operation will not change when the room temperature varies.
■CONDITION OF AUTOMATIC OPERATION
Over 27°C COOL
16~27°C
TEMPERATURE
SETTING
FUNCTION
27°C
HIGH at start, LOW after
the preset temperature is
reached.
-
DEHUMIDIFY
-
INITIAL ROOM
TEMPERATURE (APPROX.) FAN SPEED
Slightly lower than the
room temperature LOW
●The selected mode of operation will not change during the operation even though the room temperature
change.
■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 COOL or
Dehumidify, depending on the initial room temperature
and outdoor 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
°C
START
STOP

–8 –
˚
C
RESET
˚
C
COOLING OPERATION
Use the device for cooling when the outdoor temperature is 21-43°C.*
If humidity is very high (over 80%) indoors, 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 or LOW 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
buttons (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 (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
2
3
START
STOP

–9 –
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.
°C
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

– 10 –
FAN OPERATION
You can use the device simply as an air circulator. Use this function to dry the interior of the indoor
unit at the end of summer.
Press the FUNCTION selector so that the display indicates
(FAN).
Press the (FAN SPEED) button.
Press the (START/STOP) button. Fan operation starts with
a beep. Press the button again to stop operation.
1
2
START
STOP
RESET

– 11 –
ENGLISH
RESET
˚
C
˚
C
CIRCULATION OPERATION
Press the FUNCTION selector so that the display indicates
(CIRCULATE).
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.
Press the (START/STOP) button. Circulating 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.
2
1
3
START
STOP

– 12 –
SUPER COOLING
Press the button.
●Operation start with a signal received sound “beep”.
●Unit will be forced operate in (COOL) with SUPER HI fan
speed for 20 minutes. Indicator appear during this period
while temperature and fan speed setting display remain
unchanged. (Operation lamp at indoor unit is blinking).
●After 20 minutes, operation lamp stop blinking and indicator
will disappear while unit will be in (COOL) mode.
Temperature and fan speed will change to previous setting.
●Air blow sound will be slightly high due to forced operation.
1
NOTE
(1) OFF TIME setting : OFF timer will be a priority over the
SUPER COOLING operation time.
(2) ON TIME setting : SUPER COOLING operation will be a
priority over the ON timer operation time.
CANCELLATION of SUPER COOLING Operation
Cancel Condition Operation mode after cancel
Press or OFF timer time is up Stop operation
key press DEHUMIDIFYING operation
Press or
Press or
Press or
Press or
Press or
20 minutes time is up
Normal COOLING operation
˚
C
RESET
˚
C

– 13 –
ENGLISH
˚
C
RESET
˚
C
SUPER SILENT
Press the button.
●Operation start with a signal received sound “beep”.
●Unit will be forced operate in any operation mode as before
with SUPER SILENT fan speed. The indication of operation
mode, temperature setting, fan speed and timer value on
remote controller will remain no change.
1
CANCELLATION of SUPER SILENT Operation
Cancel Condition Operation mode after cancel
Press button.
OFF timer time is up
Sleeping timer time is up
Stop operation
Press SUPER COOL button SUPER COOL operation
Press button
Press SUPER SILENT button.
Next fan speed operation
Existing operation mode
NOTE:
Under SUPER SILENT operation and quiet environment, phenomena like flowing noise of refrigerant
in the refrigerating cycle may occur, but this is normal for the operation.

–14 –
RESET
TIME, DAY,
MONTH
(current time,
day, month)
OFF TIMER
ON TIMER
RESERVE
CANCEL
HOW TO SET THE TIMER
ON/OFF-Timer
●The device will turn on (off) and off
(on) at the designated times.
●The switching occurs first at the
preset time that comes earlier.
●The arrow mark appearing on the
display indicates the sequence of
switching operations.
1 Press the (ON-OFF)
button so that the (OFF)
mark blinks.
OFF-Timer
You can set the device to turn off
at the present time.
After you change the
batteries;
How to Cancel Reservation
Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL)
button.
The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.
1 Set the current month and
day with the TIMER control
button.
1 Press the (OFF-TIMER)
button. The (OFF) mark blinks
on the display.
1 Press the (ON-TIMER)
button the (ON) mark blinks
on the display.
2 Set the turn-off time
with the TIMER control
button.
Press the (RESERVE)
button.
3 Press the (ON-
TIMER) button so that the
(OFF) mark lights and
the (ON) mark blinks.
NOTE
You can set only one of the OFF-timer,
ON-timer and ON/OFF-timer.
ON-Timer
Time, Day, Month
●The device will turn on
at the designated times.
M D
M D
AM
STOP
Start
AM
Start
Stop
PM
Start Stop
PM
AM
PM

–15 –
ENGLISH
3 Point the signal window of the remote controller toward the indoor unit, and
press the (RESERVE) button.
The (OFF) mark starts lighting instead of flashing and the sign (RESERVED)
lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.
●The time indication will disappear
automatically in 1 second.
●To check the current time setting,
press the (TIME) button twice.
The setting of the current time is
now complete.
●The timer may be used in three ways: off-timer, on-timer, and ON/OFF (OFF/ON)-timer. Set
the current time at first because it serves as a reference.
●As the time settings are stored in memory in the remote controller, you only have to press
the (RESERVE) button in order to use the same settings next time.
2 Set the
(TIME) button.
3 Set the current time with the
TIMER control button.
Example: The current time is 1:30 p.m.
2 Set the turn-off time with the
TIMER control button.
The setting of turn-off time is now complete.
Example: The device will turn off at 11:00p.m.
Example:
The device will turn on, early so that the preset temperature
be almost reached at 7:00 a.m.
The setting of the turn-on time is now complete.
4 Set the turn-on time with the
TIMER control button.
5 Point the signal window of the remote controller toward the indoor unit, and
press the (RESERVE) button.
The (ON) mark starts lighting instead of flashing and the (RESERVED) sign
lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.
3 Point the signal window of the remote controller toward the indoor unit, and
press the (RESERVE) button.
The (ON) mark starts lighting instead of flashing and the (RESERVED) sign
lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.
2 Set the turn-on time with the
TIMER control button.
Example:
For heating, the device will turn off at 10:30p.m., and then
turn on early so that the preset temperature be almost reached
at 7.00a.m.; for cooling and dehumidifying, it will simply turned
on at 7.00a.m. The settings of the turn on/off times are now
complete.
4 Press the (TIME) button again.
The time indication starts lighting
instead of flashing.
PM PM
AM
PM
PM
PM
AM
AM
AM
AM
PM
PM

–16 –
HOW TO SET THE SLEEP TIMER
1 Set the ON-timer.
Set the current time at first if it is not set before (see the pages for setting
the current time). 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.
Example: If you set 3 hours sleep
time at 11:38 p.m., the turn-off
time is 2:38 a.m.
2 Press the (SLEEP) button and set the sleep timer.
The device will be turned off by the sleep
timer and turned on by on-timer.
How to Cancel Reservation
Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL)
button.
The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.
Example:
In this case, the device will turn off
in 2 hours (at 1:38 a.m.) and starts
at 6:00 a.m. next morning.
SLEEP
H
H
AM
AM
Sleep
timer Start
H

–17 –
ENGLISH
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 settings of room temperature and circulation are varied.
Fan
“”
Operation with the sleep timer
●If date or current time is not set, sleep timer can not be set.
●If you set the sleep timer after the off-, on/off- or off/on-timer has been set, the sleep timer
becomes effective instead of the off-, on/off- or off/on-timer set earlier.
●You can not set other timer during sleep timer operation.
●After sleep timer time is up and when press sleep button again, the sleep timer will be set as
last setting.
●Sleep timer effective only once.
NOTE
The room temperature will
be controlled 2°C above the
temperature and the FAN
SPEED will be set to LOW
setting 1 hour after the
setting of the sleep timer.
Sleep
timer set
1 hour 3 hours later
7 hours later
2 hours
later
6 hours
later

–18 –
ADJUSTING THE AIR DEFLECTOR
1
2
Adjustment of the conditioned air in the left and right directions.
●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.
●Use the horizontal air deflector within the adjusting range
shown on the right.
●When the operation is stopped, the horizontal air deflector
moves and stops at the position where the air outlet
closes.
Adjustment of the conditioned air in the upward and downward
directions.
The horizontal air deflector is automatically set to the proper
angle suitable for each operation. The deflector can be swung
up and down continuously and also set to the desired angle
using the “(AUTO SWING)”button.
●If the “(PARALLEL SWING)”button is pressed
once, the vertical air deflectors swing left and right to
parallel. If the button is pressed again, the deflectors
stop in their current position. Several second (about 6
seconds) may be required before the deflectors start to
move.
●If the “(SYMMETRY SWING) button is pressed
once, the vertical air deflectors swing left and right to
symmetry. If the button is pressed again, the deflectors
stop in their current position. Several seconds (about 6
seconds) may be required before the deflectors start to
move.
CAUTION
●In “Cooling”operation, do not keep the horizontal and
vertical air deflector swinging for a long time. Some dew
may form on the horizontal and vertical air deflector and
dew may drop.
●PARALLEL SWING
●SYMMETRY SWING
PARALLEL
SWING
SYMMETRY
SWING
Horizontal air deflector
RESET

–19 –
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.
CAUTION
Push and pull to the
direction of arrow

–20 –
THE IDEAL WAYS OF OPERATION
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 “sleep 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.