Hitachi RAS-18C9 User manual

ENGLISH
– 1 –
INDOOR UNIT/OUTDOOR UNIT
MODEL
RAS-18C9/RAC-18C9
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.
Arahan pengendalian Muka surat 23~44
Untuk mendapatkan prestasi yang tinggi dan mengelakkan masalah untuk jangka masa yang lama, sila baca arahan
ini sepenuhnya.
RAS-18C9
RAC-18C9
SPLIT TYPE AIR CONDITIONER

– 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
!

ENGLISH
– 3 –
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.
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.

– 4 –
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
750
MODEL
RAS-18C9
RAC-18C9
HEIGHT (mm)
295
570
DEPTH (mm)
190
280
MODEL NAME AND DIMENSIONS

ENGLISH
– 5 –
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 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”.
AUTO
RESTART
SWITCH
AUTO
RESTART
SWITCH
HITACHI

–6 –
NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT
■This controls the operation function and timer setting of the room air conditioner. The range of
control is about 4 meters. If indoor lighting is controlled electronically, the range of control may be
shorter.
Precautions for Use
●Do not put the remote controller in direct
sunlight and high temperature.
●Do not drop it on the floor, and protect
it from water.
●If you press the FUNCTION selector
button during operation, the air
conditioner may stop for about 3 minutes
for protection before you can start it
again. (unless you turn off and on again
the power source)
You can use the remote controller by fixing it on the
wall with the accessory parts.
●Before fixing it,
make sure the
unit can be
controlled by the
remote control
unit at the fixing
position.
REMOTE
CONTROLLER
HOLDER

ENGLISH
–7 –
AUTOMATIC OPERATION
■The device will automatically determine the operation mode either COOL or DEHUMIDIFY, depending
on the initial room temperature.
1
Press the (START/STOP) button
●Operation start with a “beep”.
Press the (START/STOP) button
●Please make sure you have been selected the (Automatic) mode
by use the (FUNCTION) Button.
●The fan speed selector does not work at this operation.
STOP
Press the (ROOM TEMPERATURE) button
●Temperature setting change by 1°C for each 1 time press.
Up
Down
●You can raise or lower the temperature setting by a maximum of
3°C.
●The display does not indicate the preset temperature in the Automatic
mode. Device will receive the setting by a “beep”.
■You can slightly adjust the room temperature.
1
°C
°C
■CONDITION OF AUTOMATIC OPERATION
●The selected mode of operation will not change during the operation even though the room
temperature change.
Over 27°C COOL
16 ~ 27°C
FUNCTION
27°C
Slightly lower than the
room temperature LOW
FAN SPEED
HIGH at start, MEDIUM or
LOW after the preset
temperature is reached
DEHUMIDIFY
-
INITIAL ROOM
TEMPERATURE (APPROX.)
TEMPERATURE
SETTING
▲ ▲
-

–8 –
CIRCULATION OPERATION
■When the room temperature is higher than the thermostat set temperature, only the fan operates to
circulate the upper hotter air downwards. This makes temperature distribution of the room evenly at
heating.
1
Press the (START/STOP) button
●Operation start with a signal received sound “beep”.
Press the (START/STOP) button
●Make sure you have been select the (Circulate) mode by using
the (FUNCTION) Button.
●You can select the fan speed and desired temperature.
●This operation is useful in winter when using other heating equipment.
STOP
HOW TO SET THE SLEEP TIMER
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.
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.
NOTE
If you set the sleep timer when the off-timer or
on/off-timer has been set earlier, the sleep timer
becomes effective instead of the off- or on/off-
timer set earlier.
Example: Setting 3 hours
sleep time.

ENGLISH
–9 –
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.
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.
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.
●You can not set other timer during sleep timer operation.
NOTE
Sleep
timer set
1 hour 3 hours later
7 hours later
2 hours
later
6 hours
later

–10 –
MANUAL OPERATION [Cooling ●Dehumidify ●Circulation]
■Please use under below condition when you want to set the function mode, room temperature and
fan speed by manually.
DEHUMIDIFYING
Room Temperature 16°C above
COOLING
Outdoor Temperature 22-42°C
1
OPERATION MODE SELECTION
●Every time you press the button, the mode will change as the below
sequence
(Auto) [(Cool) [(Dehumidify) [(Circulation)
4
Press the (START/STOP) button
●Operation start with a signal received sound “beep”.
Press the (START/STOP) button
●As the settings are stored in memory in the remote control unit, you
only have to press the (Start/Stop) button next time.
STOP
2
ROOM TEMPERATURE SETTING
Up
Down
●The cooling operation does not start if the
temperature setting is higher than the current
room temperature.
°C
Dehumidify 16~26°C
Cooling 25~28°C
▲ ▲
3
FAN SPEED SETTING
●Every time you press the button, fan speed will change as the below sequence.
●COOLING
CIRCULATION
NOTE
(Auto) : The FAN SPEED is HIGH at first and varies to MED or LOW
automatically when the preset temperature has been reached.
●DEHUMIDIFYING : LOW (FIXED)
: ( )
}
Dehumidify 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 with
the room temperature set slightly lower than the current room temperature, whatever 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.
:AUTO [HIGH [MED [LOW
:( [[[)
■Recommend Temperature

ENGLISH
–11 –
TIMER RESERVATION
■ON Timer and OFF Timer are available.
1
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.
●The value change quicker if you keep pressing the
button.
OFF Timer Reservation
■Operation stop at setting time
2
Press the (Reserve) button
●OFF TIMER reserved with a signal received sound
“beep”.
●The (OFF) Mark starts lighting instead of blinking.
0.5 1.0 1.5 9.5 10 11 12
0.5 hour interval 1 hour interval
1
ON TIME setting
●Select the ON TIMER by pressing the (ON)
Button.
●At the beginning of setting, time 6 hours was set.
●Setting time will change according to the below
sequence.
●The value change quicker if you keep pressing the
button.
ON Timer Reservation
0.5 1.0 1.5 9.5 10 11 12
0.5 hour interval 1 hour interval
1
Press the (Cancel) button
●As the time settings are stored in remote controller
memory, you only have to press the (Reserve)
button in order to use the same setting next time.
CANCELLATION of Timer Reservation
2
Press the (Reserve) button
●ON TIMER reserved with a signal received sound
“beep”.
●The (ON) Mark starts lighting instead of blinking.
o
■Operation will start for setting
temperature at setting time (The starting
time may different depend on the room
temperature and set temperature).

–12 –
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 swung 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.

– 13 –
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

–14 –
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

–15 –
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.
!

–16 –
ATTACHING THE AIR CLEANSING AND DEODORIZING 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 and deodorizing filters
to the filter.
●Attach the air cleansing and deodorizing filters to
the frame by gently compress its both sides and
release after insertion into filter frame.
Do not bend the air cleansing
and deodorizing filter as it may
cause damage to the structure.
●In case of removing the air cleansing and deodorizing filters, please follow the above procedures.
●The cooling capacity is slightly weakened and the cooling speed becomes slower when the air
cleansing and deodorizing filters are used. So, set the fan speed to "HIGH" when using it in this
condition.
●Air cleansing and deodorizing filters are washable and reusable up to 20 times by using vacuum
cleaner or water rinse under running tap water. Type number for this air cleansing filter is
<SPX-CFH5>. 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.

–17 –
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 and
deodorizing filter from the air filter frame.
2
3
●Re-insert the air cleansing and deodorizing
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 and deodorizing filter as some detergent may deteriorate
the filter electrostatic performance.
PROCEDURE
Vacuum dust from the air filter and air cleansing
and deodorizing 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 and deodorizing 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.

–18 –
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 (COOL),
the temperature to 32°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

–19 –
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 operation or stopping the 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: