Hitachi RAK-18PSA User manual

– 1 –
ENGLISH
SPLIT TYPE AIR CONDITIONER
INDOOR UNIT/OUTDOOR UNIT
MODEL
RAK-18PSA/RAC-18WSA
RAK-25PSA/RAC-25WSA
RAK-35PSA/RAC-35WSA
OUTDOOR UNIT
INDOOR UNIT
RAK-18PSA
RAK-25PSA
RAK-35PSA
RAK-18WSA
RAK-25WSA
RAK-35WSA
Instruction manual Page 1~22
To obtain the best performance and ensure years of
trouble free use, please read this instruction manual
completely.
Bedienungsanleitung Seite 23~44
Lesen Sie diese Bedienungsanleitung vollständig
durch, um eine optimale Geräteleistung und einen
langjährigen störungsfreien Betrieb sicherzustellen.
Mode d'emploi Pages 45~66

     
      
entièrement cette notice.
Manuale di istruzioni Pagina 67~88
Per ottenere il massimo delle prestazioni e garantire
un utilizzo sicuro per anni, leggere questo manuale di
istruzioni nella sua integrità.
Manual del a distancia Página 89 ~ 110
Para obtener un rendimiento óptimo y asegurarse
muchos años de uso sin problemas, lea detenidamente
este manual de instrucciones.
Manual de instruções Página 111~132
Leia este manual de instruções na íntegra para obter
um desempenho ideal e garantir o funcionamento sem
problemas da unidade ao longo dos anos.
 
        
    


– 2 –
•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 signs indicate the following meanings. (The following are examples of signs.)
•Please keep this manual after reading.
PRECAUTIONS DURING OPERATION
WARNING
WARNING
SAFETY PRECAUTION
•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 or fire.
•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 the unit near a location where there is flammable gas. The outdoor
unit may catch fire if flammable gas leaks around it. Piping shall be suitable
supported with a maximum spacing of 1m between the supports.
•Please ensure smooth flow of water when installing the drain hose.
•Make sure that a single phase power source is used.
The use of other power sources may cause electrical components to overheat
and lead to fire.
PRECAUTIONS DURING INSTALLATION
PROHIBITION
CONNECT EARTH LINE
PROHIBITION
WARNING
CAUTION
•
•Should abnormal situation arise (like burning smell), please stop operating the
unit and remove plug from the socket. 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.
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
•Do not use any conductor as fuse wire, this could cause fatal accident.
•During thunder storm, disconnect the plug top and turn off the circuit
breaker.
•Do not put objects like thin rods into the panel of blower and suction side
because the high-speed fan inside may cause danger.
•Spray cans and other combustibles should not be located within a meter of the
air outlets of both indoor and outdoor units.
As a spray can’s internal pressure can be increased by hot air, a rupture may result.
PROHIBITION
PROHIBITION
PROHIBITION
PROHIBITION
“OFF”
“OFF”
This sign in the figure indicates prohibition. Indicates the instructions that must be followed.
PROHIBITION
Avoid an extended period of direct airflow for your health.
220V-230V

– 3 –
ENGLISH
•Do not place plants directly under the airflow as it is bad for the plants.
•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.
•The product shall be operated under the manufacturer specification and not
for any other intended use.
PRECAUTIONS DURING OPERATION
CAUTION
•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.
•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 wash the unit with water or place a water container such as a vase on
the indoor unit.
Electrical leakage could be present and cause electric shock.
•Be sure to stop the operation by using the remote controller 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 be operated for a long period.
•Do not climb on the outdoor unit or put objects on it.
•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.
•Indoor unit cleaning must be performed by authorized personnel only. Consult
This appliance is not intended for use by young children or infirm persons unless they have been
Young children should be supervised to ensure that they do not play with the appliance.
your sales agent.
adequately supervised by a responsible person to ensure that they can use this appliance safely.
Using a commercially available detergent or similar can damage the plastic parts
or clog the drain pipe, causing water to drip with potential electric shock hazard.
•Do not touch the air outlet, bottom surface and aluminium fin of the outdoor
unit.
You may get hurt.
Do not touch the refrigerant pipe and connecting valve.
Burns may result.
PROHIBITION
DON’T WET
PROHIBITION
PROHIBITION
PROHIBITION
DON’T TOUCH
“OFF”
PROHIBITION
PROHIBITION
PROHIBITION
PROHIBITION
PROHIBITION
DON’T TOUCH
STRICTLY OBSERVE
PRECAUTIONS
“OFF”
•
•
•

– 4 –
Drain Port (bottom)
Air Outlet
Discharges cool air when in heating
mode and warm air when in cooling
and dry cool modes, and warm or
cold air when in the dehumidifying
mode.
NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT
OUTDOOR UNIT
Signal Receiver (internal)
Receive signal from the
remote control.
Indicator
Front Panel
(Page 6)
Horizontal/
Vertical Air Deflector
(internal)
Air Outlet
Remote Controller
Pipe/Wiring
Drain Hose
Drains dehumidified water generated from the indoor unit when in
the cooling, dehumidifying and dry cool modes.
Air Inlet (rear and left side)
噝Even if the operation is stopped, the outdoor
unit fan continues to rotate for 10~60 seconds
to cool down the electrical parts.
噝In heating operation, condensed water and
defrosted water is discharged from the outdoor
unit. Do not block the drain port as the water in
the drain may freeze in a cold area.
噝Even during cooling operation, the water
condensed in the pipe, etc. may flow out from
the outdoor unit.
噝When installing the outdoor unit under eaves,
etc. of the apartment, install a bush and drain
pipe on the drain port for drainage treatment.
ABOUT OUTDOOR UNIT
(Understanding The Operating Mechanism, page 14)
Earth Terminal
(side bottom)
噝While the power is on, a very small amount of power is
consumed within the control circuit even when the unit
is not in operation.
Power can be saved if the circuit breaker is switched off.
CAUTION
Pull out the power plug if the unit is not in
use for a long period.
(Or turn off the circuit breaker.)
Temporary Operation Switch
(Forced Cooling Switch)
When the remote
controller does not
work due to factors
like dead batteries,
you can press the
temporary operation
switch to start
temporary
operation. (Page 19)
Ion Mist Unit
Operation temperature of outdoor is -ąto 43ą
ECO Sensor
(



– 5 –
ENGLISH
Air Cleaning Mesh Box
INDOOR UNIT CONTROL PANEL / CLEANING UNIT
Open the front panel to operate. (How to open the front panel, page 6)
Dust Catcher
Collects the dust swept by
the cleaning unit. (At front
and top.) (Page 12 )
Dust Box
Collects and keeps the dust
that has been cleaned.
(Page 9)
Stainless Mesh Filter (inside)
Collects particulates and dusts in the air. (Page)
Cleaning Unit
Cleans the dust
caught by the
stainless mesh
filter.

–6–





•
2

•Take out the anti-mold wasabi
cassette from the aluminium bag.
Do not remove or tear
the aluminium sheet on
the surface nor make a
hole on it.
•Remove the dust box housing
Dust Box Housing
Dust Box Housing
Handle
INSTALLING ANTI-MOLD WASABI CASSETTE
Open the front panel.
•Do not hold the movable panel
when opening and closing the
front panel.
Front panel
Gripping part Gripping part
Panel support
•Hold and lift up the front panel.
•Push up the panel support until it
clicks to lock it.
Lower the front panel and fix in
position with the panel support.
Install the anti-mold wasabi cassette.
Aluminium bag
Slide the anti-mold
wasabi cassette that
has been taken out of
the wrapper directly
into the Dust Box
Housing.
CAUTION
•Do not put your face close to the package when
you open it.
Your eyes or nose may be irritated by wasabi aroma.
•Do NOT eat.
1
No daily maintenance is required. However,
the effectiveness of anti-mold wasabi cassette
will be lost after approximately 10 years have
elapsed. Replace the anti-mold wasabi cassette
in such event.
䇭
CAUTION
• Do not open the front panel during operation .
It may interrupt the movable panel to work properly.
Be sure to stop the operation first before opening
the front panel.
Anti-mold wasabi
cassette

– 7 –
ENGLISH

Close the front panel.
• Hold and lift up the front panel.
CAUTION
•If the front panel is loose, it may come off and drop.
•When opening the front panel upwards, please do not use excessive force.
If the front panel comes off the device, this may cause it to malfunction.
•When the front panel remains open, be sure to push up the panel
support.
•
Push down the panel support until it clicks.
Push the both ends of the front panel first and
then its center until it clicks.
•
Pull it downward.
3

– 2 –
Transmission Indicator
The transmission indicator
ROOM TEMPERATURE
Button
Press this button to set the
room temperature. Keep
pressing and the value will
change more quickly.
STOP Button
HEAT Button
Press this button to start
heating operation.
(Page 8)
DEHUMIDIFY Button
Press this button to start
dehumidifying operation.
(Page 8)
COOL Button
Press this button to start
cooling operation.
(Page 9)
AUTO Button
Press this button to
start automatic operation.
(Page 6)
Remote controller can be used when it is fixed on a wall or pillar using the remote controller holder.
Before fixing it, make sure the indoor unit can be controlled from the remote controller fixing point.
SLEEP TIMER Operation Button
Press this button to start sleep timer
operation. (Page 20)
REMOTE CONTROLLER
T
ransmits the operation and timer settings to the indoor unit.
T
he LCD shown in the illustration below is the display immediately after the reset switch is pressed. Usually not
all the data are displayed. On the LCD shown below, the functions not available for this room air conditioner are
also displayed.
Transmission Part
Screw
Press this button to enter
(Page 11)
Press this button to start Ion mist
operation.
Press this button to stop any
operation except the preset timer.
lit when a signal is sent.
ION MIST Button
(Page 10)
NAMES AND FUNCTIONS OF REMOTE CONTROLLER
POWERFUL Button
Use this button to set the
POWERFUL mode.
(Page 9)
FAN SPEED selector Button
This determines the fan speed.
ECO SENSOR Button
the eco sensor mode.
(Page )
(Page )

–3 –
ENGLISH
(When the door is open)
Starts filter cleaning operation
while the air conditioner
operation is stopped.
SET TIME Button
Use this button to set and
check the current time.
(Page 4)
TIMER Buttons
RESET Button
Press this button after the
batteries are replaced and
when the air conditioner does
not function properly. (Page )
Button
Press this button to start
(Page 12)
LEAVE HOME Button
(Page 14)
ONE TOUCH CLEAN
Button (Page 13)
FAN SPEED Button
Press this button to
select fan speed.
Five options are available:
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4
COMFORT AIRFLOW
FILTER CLEAN Button
Comfort airflow operation.
VERTICAL AIRFLOW Button
Use this button to swing the
vertical air deflector or to adjust
the angle to your preference.
)51egaP(
HORIZONTAL AIRFLOW
Button
Use this button to swing the
horizontal air deflector or
to adjust the angle to your
)61egaP(.ecnereferp
(Page 2
(Page 
(Page )

–4–
Address
Address
PREPARE THE REMOTE CONTROLLER
Install the batteries.
Use two AAA-size batteries.
Set the current time (Ex: set to 13:30 )
RESET
1
2
Press the (TIMER) button to adjust to the current time.
You can fast forward the time by continuously pressing the
button.
Confirm the current time
Press the (CLOCK) button to check the current time
(The time display disappears 3 minutes later). If necessary,
readjust the time following the above procedure 1 and 2.
Address selector switch is used to prevent
remote controller signal interference in such
circumstance where 2indoor units are used in
the same room. This switch is not usually used.
(The factory setting is at “A” side.)
For this setting, please make an inquiry to your
sales agent.
Address selector
switch
Switch lever
Remote controller
backside
Do not operate by yourself.
Push mark
and pull.
ABOUT ADDRESS SELECTOR SWITCH
Time is incremented
Time is decremented
Press (CLOCK) button to set the current time.
is lit instead of
blinking. It automatically goes
off in 10 seconds.
12Open the cover and press the RESET
button with a sharp tip item.
3
18:88 lights up on the current
time display and start
blinking.
CAUTION
1. Do not mix new and old batteries, or
different type of batteries together.
2. Remove the batteries when you do
not use the remote controller for 2or 3
months.

–5–
ENGLISH
噝Point the remote controller to the signal receiver of the unit
Signal reception distance is approximately 7m in front of the unit.
However, this distance may be shorter or the signal may not be
receivable if there is an electronic lighting device in the same room.
噝Handle the remote controller with care
Dropping it or getting it wet may compromise its signal transmission
capability. After new batteries are inserted into the remote controller,
the unit require approximately 10 seconds before it can respond to
commands and begin operation.
WHEN OPERATING THE REMOTE CONTROLLER
Approximately
7m from the front
PREPARE THE REMOTE CONTROLLER (continued)

– 6–
AUTOMATIC OPERATION
Based on the room temperature and outside temperature, the unit determines the most suitable operation
mode (heating, dehumidifying or cooling) and a comfortable temperature. (Set the current time on the remote
controller before starting operation.)
Press the (AUTOMATIC OPERATION) button
to set the operation mode to auto.
Press the (STOP) button.
A short beep sound and the
operation stops.
STOP
Performs heating operation when the room temperature is below 23°C.
Set the temperature to be around 23°C.
Performs dehumidifying operation when the room temperature is 23~26°C.
The preset temperature will be the room temperature at the time of start of air conditioner
operation.
Performs cooling operation when the room temperature is above 27°C.
Set the temperature to be around 27°C.
AUTOMATIC OPERATION
Heating
Dehumidifying
Cooling
Even if dehumidifying operation is set, the air conditioner may not execute dehumidifying if the room humidity
is not very high. This is not a malfunction.


– 7–
ENGLISH
AUTOMATIC OPERATION (continued)
Increase
Decrease
Adjust the room temperature
Press the (ROOM TEMPERATURE)
button.
Every time you press it, a short beep sound is emitted
is displayed if the temperature is set higher than
the automatically set room temperature by 1°C.
is displayed if the temperature is set lower than the
automatically set room temperature by 1°C.
The adjustable temperature range is not higher or lower
than 3°C of the automatically set room temperature.
Humidity setting cannot be adjusted.
Select the fan speed
Increase (SILENT) (LOW) (AUTO)
Decrease (AUTO) (LOW) (SILENT)
Press the (FAN SPEED) button.
Room temperature and fan speed can be adjusted to your preference.
1
2
∂ÏÏËÓÈο
∂ÏÏËÓÈο
Set the desired FAN SPEED with the (FAN SPEED
button (the display indicates the setting).
(AUTO) (LOW) (SILENT)
Or
and the temperature will change by 1°C.

– 8–
HEATING OPERATION
Press the (HEAT) button to start heating operation.
Press the (HEAT) button.
Adjust the room temperature and fan speed to your preference.
Temperature range between 16°C~32°C can be set.
Press the (STOP) button.
A short beep sound and heating operation stops.
STOP
DEHUMIDIFYING OPERATION
Press the (STOP) button.
A short beep soundnd dehumidifying operation stops.
STOP
ENGLISH
DEUTSCHFRANÇAISITALIANOSPANISHPORTUGUÊS
∂ÏÏËÓÈο
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.
Press the Button indicates (DEHUMIDIFY).
The fan speed is set at LOW.
Fan speed only can be selected to SILENT or LOW.
Set the desired room temperature with the ROOM
TEMPERATURE setting buttons (the display indicates the
setting).
The range of 20-26°C is recommended as the room
temperature for dehumidifying.
2

is emitted
is emitted

–9–
ENGLISH
STOP
Press (POWERFUL) button during operation.

“ ” is displayed on the LCD.
ƽ By pressing (POWERFUL) button during AUTO, HEATING, DEHUMIDIFYING or, COOLING the
air conditioner performs at the maximum power.
ƽDuring POWERFUL operation, cooler or warmer air will be blown out from indoor unit for COOLING of
HEATING operation respectively.
Press (POWERFUL) button again.
POWERFUL operation stops.
“ ” disappears from the LCD.
Press (STOP) button.
When SLEEP mode, or LEAVE HOME mode is selected, POWERFUL operation is cancelled.
During POWERFUL operation, capacity of the air conditioner will not increase
–if the air conditioner is already running at maximum capacity.
–just before defrost operation (when the air conditioner is running in HEATING operation).
After auto restart, POWERFUL operation is cancelled and previous operation shall start.
POWERFUL OPERATION
COOLING OPERATION
Press the (COOL) button to start cooling operation.
Press the (COOL) button.
噝Adjust the room temperature and fan speed to your preference.
Temperature range between 16°C~32°C can be set.
Press the (STOP) button.
噝A short beep sound is emitted and cooling operation stops.
STOP
Or

–10 –
Ion mist operation is the combined operation mode of the fan operation
and moisturizing operation.
If the Ion mist mode is set while the air conditiconer is in basic operation mode, the air purifying function by
the electric dust collector will operate together.
Press the (ION MIST) button.
Adjust the fan speed to your preference. “HI”, “MED”, “LOW”, “SILENT”
can be selected.
When only Ion mist operation is set,
and (ON TIMER) preset cannot be done.
(OFF TIMER)
ION MIST OPERATION
, the electric dust collector operation
STOP
STOPSTOP
Press the (STOP) button.Or
Press the (ION MIST) button again.
ION MIST operation stops.
“”disappears from the LCD.“

– 11 –
ENGLISH
Example: Cooling
With the eco sensor, the air conditioner can detect the activity level in a room and adjust the temperature
and humidity automatically, thus achieving the purpose of energy saving.
Press the button.
The eco sensor automatically adjusts the
indoor temperature and humidity according to
the activity level in the room. However, the
temperature
and humidity specified by the
remote controller remain unchanged.
The energy saving effect can be achieved only after the energy-saving temperature control function keeps
working
for more than 2hours.
In the energy-saving temperature-control mode, the energy consumption saved by the air conditioner varies with
the activity level.
Operation mode
Reduces the preset temperature
in one of the following cases:
Operation Description
Heating
Cooling
Auto
Dehumidifying
Dehumidifying
e Actions   person
Decreases the temperature by 2°C.
Increases the temperature by 2°C .
Increases the temperature by 5–10%.
Energy-saving operation in auto mode.
Auto
Cooling
Heating
Raises the preset temperature
in one of the following cases:
Low activity level
Low indoor temperature
Increases the preset temperature
in one of the following cases:
Energy-saving operation in auto
mode.
The detects changes to the infrared generated by human bodies. Therefore, the accuracy
of
may be affected negatively in the following cases:
The activity level is very low (reading, watching TV, etc.) or human bodies are blocked by a screen, cabinet, or glass board.
The indoor temperature is very high and exceeds or approaches the human body temperature (when the refrigeration
just begins).
The person wears thick clothes and turns his/her back to the air conditioner.
Curtains or plant leaves swing due to pet movement or airflow.
Low activity level
Low indoor temperature
can further reduce the energy consumption.
After detecting that the person leaves the room for 30 minutes, the air conditioner turns to the ECO modes according
to the settings in the remote controller as shown in the right table, but the preset temperature and humidity
in the remote controller remain unchanged.
When the air conditioner works in powerful operation, setting the ECO mode will cancel the powerful operation.
High activity level
High indoor temperature
12)
ECO SENSOR
ECO SENSOR
eco sensor
eco sensor
Comfort airflow (Page

1

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The atically change the airflow direction.
Press the air deflection
mode.
If the comfort airflow mode fails to achieve the desired effect, adjust the airflow direction manually.
When the machine works in cooling, dehumidifying, er the
humidity/temperature is very high, the left/right/upper/lower air deflectors may change their angles
to prevent drop of condensed water. After the temperature falls, the air conditioner returns to the comfort
status.
(Direct) Adjusts the airflow direction
automatically to send the air flow to
the location of the person.
(Indirect) Adjusts the airflow direction
automatically to keep the air flow away
from the location of the person.
Return to the setting prior to the
Pressing the
button
Release the
button
Operation Description
Example: Heating
DEUTSCHFRANÇAISITALIANOSPANISH
∂ÏÏËÓÈο
)TCERIDNI/TCERID(WOLFRIATROFMOC
COMFORT AIRFLOW button to switch the
COMFORT AIRFLOW
comfort airflow is set,
airflow
aft if the indoor
eco sensor can detect the position of people and autom
comfort
airflow mode.
comfort airflow
1
After the comfort airflow mode is set, the sensor constantly works to detect the position of the person. The
airflow direction is adjusted every 15 seconds to 3 minutes. The airflow direction will not change immediately
when the sensor detects the position of the person.

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ENGLISH
CLEAN (ONE TOUCH CLEAN) OPERATION
Drying indoor heat exchanger after cooling operation to prevent mildew.
Press (CLEAN) button when unit is OFF.
Total time taken for One Touch Clean operation is 60 minutes.
During this operation, HEATING or FAN operation shall
operate.
During one touch clean, operation lamp is blinking.
Press (STOP) button. Or
Press (CLEAN) button again.
When CLEAN operation finish, unit will switch OFF automatically.
If Daily Timer or Once Timer is set, there is a need to cancel those timer before operating CLEAN function.

STOP
STOPSTOP

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LEAVE HOME OPERATION
Prevent the room temperature from falling too much by setting temperature automatically when no one is at home.
10°C
Press (LEAVE HOME) button during stop or operation.
Room temperature is set at 10°C and heating operation starts.
“ ”, “ ”, “ ”,“ ”,“ ” is displayed on the LCD.
Press button.
Press (LEAVE HOME) button again.
Change to other operation mode by pressing (HEAT) button,
Return to previous operation mode.
During Leave Home operation, fan speed and horizontal air deflector position cannot be changed.
POWERFUL and ECO SENSOR operations are not applicable during Leave Home.
(DEHUMIDIFY) button, (COOL) button or (AUTOMATIC
utton.CPERATION) b

STOP
STOPSTOP