Hitachi RAK-18RPB User manual

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SPLIT TYPE AIR CONDITIONER
INDOOR UNIT
MODEL
RAK-15QPB
RAK-18RPB
RAK-25RPB
RAK-35RPB
RAK-50RPB
This room air conditioner is only for consumer usage.
Do not use for preservation of foods, animals, plants, precision machines, art, medicine or such.
RAK-15QPB
RAK-18RPB
RAK-25RPB
RAR-6N2
RAK-35RPB
RAK-50RPB
RAR-6N1
Instruction manual Page 1~10
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.

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.)
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.
•
•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
•
•
•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”
PROHIBITION
Avoid an extended period of direct airflow for your health.
220V-230V
Please keep this manual after reading.
Make sure to connect earth line.
Indicates the instructions that must be followed.
This sign in the figure indicates prohibition.
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.
Should abnormal situation arise (like burning smell), please stop operating the
unit and turn off the circuit breaker. Contact your
fire may occur if you continue to operate the unit under abnormal situation.
agent. Fault, short circuit or

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ЬDo 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.
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for any other intended use.
PRECAUTIONS DURING OPERATION
CAUTION
ЬDo not attempt to operate the unit with wet hands, this could cause fatal
accident.
ЬWhen operating the unit with burning equipments, regularly ventilate
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defect. If not, the outdoor unit may collapse and cause danger.
ЬDo 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.
ЬBe 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.
ЬTurn off the circuit breaker if the unit is not be operated for a long period.
ЬDo not climb on the outdoor unit or put objects on it.
ЬWhen operating the unit with the door and windows opened, (the room
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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.
ЬIf 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.
ЬIndoor unit cleaning must be performed by authorized personnel only. Consult
your sales agent.
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.
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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”
Ь
ЬThis appliance is not to be used by children or persons with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction. Children must be supervised not to play with the appliance.

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NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT
OPERATING RANGE
Operation mode Cooling / Dehumidifying Heating
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Air filter
To prevent dust from coming into the indoor unit.
(Refer page 6)
Front panel
(Refer page 7)
Indoor unit indicators
Light indicator showing the operating condition.
(Refer page 5)
Horizontal deflector Vertical deflector
(Air Outlet)
Remote controller
Send out operation signal to the indoor unit. So as to
operate the whole unit.
MODEL NAME AND DIMENSIONS
NOTE FOR MULTI SYSTEM
)mm(HTPED)mm(THGIEH)mm(HTDIWLEDOM
RAK-15QPB , RAK-18RPB , RAK-25RPB 780 280 218
032592009BPR05-KAR,BPR53-KAR
Several indoor units can be connected to one outdoor unit.
You can operate only one unit or several units according to your needs.
Combination of operations:
When operation mode is selected:
You cannot operate the indoor units in the
following combinations.
One unit Other unit
Heating
Cooling
Dehumidifying
Fan
During automatic operation
The indoor unit which is turned on first continues to
operate. Other indoor units which are turned on later
go into standby mode and the operation lamp lights.
To operate the indoor units turned on later, set the
operation mode as same as the indoor unit turned
on first.
When heating operation is automatically selected for the first indoor unit, the next indoor unit will then start to
heat. Also, if cooling or dehumidifying is automatically selected for the first indoor unit, the next indoor unit will
also start to cool or dehumidify.
Adjusting the number of indoor units:
Decrease the number of indoor
units to be operated especially
when it is very hot or very cold
or when you want to reach the
preset temperature quickly.
Stopped indoor units:
When an indoor unit is operated in the cooling,
heating or dehumidifying mode in one room,
the sound of refrigerant flow may be heard
from a stopped indoor unit or a stopped indoor
unit may become warm. This is because the
indoor unit returns refrigerant to the outdoor
unit to be ready for operation.

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NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT INDICATIONS
TIMER LAMP (Orange)
This lamp lights when the
timer is working.
OPERATION LAMP (Yellow)
This lamp lights during operation.
The OPERATION LAMP flashes
in the following cases during
heating.
(1) During preheating
For about 2-3 minutes after
starting up.
(2) During defrosting
Defrosting will be performed
about once an hour when frost
forms on the heat exchanger
of the outdoor unit, for 5-10
minutes each time.
TEMPORARY SWITCH
If the power stays on and the unit is not operated, power is slightly consumed in the control circuit.
The power is saved by turning off the power switch (or the circuit breaker when the power is supplied
from the outdoor unit).
Attaching the Wasabi-Nano Titanium Air Cleaning
Attach the
to the C-case by gently compress its both sides
and release after insertion into filter frame.
The cooling capacity is slightly weakened and
the cooling speed becomes slower when the
are used.
.
and reusable up to 20 times by using vacuum
cleaner or water rinse under running tap water.
When you want to renew it, please ask your sales
agent. Optional air cleansing and deodorizing
filters.
Air Filter Claw
Filter Frame
Mesh (Accessories) to the filter frame.
Wasabi-Nano Titanium Air Cleaning Mesh
Wasabi-Nano Titanium Air Cleaning Mesh
Wasabi-Nano Titanium Air Cleaning Mesh are washable
Wasabi-Nano Titanium Air Cleaning Mesh
C-case
CAUTION
Turn off the circuit breaker
if the unit is not be operated
for a long period.
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.
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.