Hitachi RAC-70WPA User manual

NO. 0542E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
FEBRUARY 2013 Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
SPECIFICATIONS
RAK-70PPA
CONTENTS
CAUTION ----------------------------------------------------------------- 4
SPECIFICATIONS------------------------------------------------------ 5
INSTALLATION---------------------------------------------------------- 6
HOW TO USE ---------------------------------------------------------- 7
CONSTRUCTION AND DIMENSIONAL DIAGRAM---------44
MAIN PARTS COMPONENT --------------------------------------46
WIRING DIAGRAM ---------------------------------------------------48
CIRCUIT DIAGRAM --------------------------------------------------49
PRINTED WIRING BOARD LOCATION DIAGRAM --------55
BLOCK DIAGRAM ----------------------------------------------------58
BASIC MODE ----------------------------------------------------------59
REFRIGERATING CYCLE DIAGRAM---------------------------77
DESCRIPTION OF MAIN CIRCUIT OPERATION-----------79
SERVICE CALL Q & A----------------------------------------------93
TROUBLE SHOOTING ----------------------------------------------97
PARTS LIST AND DIAGRAM------------------------------------ 123
RAK-70PPA/RAC-70WPA
After installation
RAC-70WPA
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
(WALL TYPE)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
COOLING
HEATING
OUTDOOR UNIT
RAC-70WPA
INDOOR UNIT
RAK-70PPA
1150
333
245
15
1 Ø, 50/60 Hz, 220-240V
2,170 (200 – 2,820)
9.95 – 9.10
7.00 (1.50 – 8.00)
23,900 (5,120 – 27,315)
2,200 (200 – 2,970)
10.10 – 9.30
8.00 (1.50 – 9.20)
27,300 (5.119 – 31,396)
850
800
298
55
HITACHI

– 1 –
SAFETY DURING REPAIR WORK
1. In order to disassemble and repair
the unit in question, be sure to
disconnect the power cord plug
from the power outlet before starting
the work.
2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit,
and the replacement must be effected in correct manner according to the instructions in the Service Manual
of the unit.
If the contacts of electrical
parts are defective, replace the
electrical parts without trying to
repair them.
3. After completion of repairs, the initial state
should be restored.
4. Lead wires should be connected and laid as
in the initial state.
5. Modification of the unit by user himself should
absolutely be prohibited.
6. Tools and measuring instruments for use in repairs or inspection should be accurately calibrated in advance.
7. In installing the unit having been repaired, be careful to prevent the occurence of any accident such as
electrical shock, leak of current, or bodily injury due to the drop of any part.
8. To check the insulation of the unit, measure the insulation resistance between the power cord plug and
grounding terminal of the unit. The insulation resistance should be 1M or more as measured by a 500V
DC megger.
9. The initial location of installation such as window, floor or the other should be checked for being and safe
enough to support the repaired unit again.
If it is found not so strong and safe, the unit should be installed at the initial location reinforced or at a new
location.
10. Any inflammable thing should never
be placed about the location of
installation.
11. Check the grounding to see whether
it is proper or not, and if it is found
improper, connect the grounding
terminal to the earth.

– 2 –
WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS
1. Scope
The standards provide for items to be generally observed in carrying and handling semiconductors in rela-
tive manufacturers during maintenance and handling thereof. (They apply the same to handling of abnormal
goods such as rejected goods being returned).
2. Object parts
(1) Micro computer
(2) Integrated circuits (IC)
(3) Field-effect transistors (FET)
(4) P.C. boards or the like on which the parts mentioned in (1) and (2) of this paragraph are equipped.
3. Items to be observed in handling
(1) Use a conductive container for carrying and storing of parts. (Even rejected goods should be handled
in the same way).
Fig. 1. Conductive Container
(2) When any part is handled uncovered (in counting, packing and the like), the handling person must always
use himself as a body earth. (Make yourself a body earth by passing 1M earth resistance through a
ring or bracelet).
(3) Be careful not to touch the parts with your clothing when you hold a part even if a body earth is being
taken.
(4) Be sure to place a part on a metal plate with grounding.
(5) Be careful not to fail to turn off power when you repair the printed circuit board. At the same time, try
to repair the printed circuit board on a grounded metal plate.
1M
Fig. 2. Body Earth
Body earth
(Elimik conductive band)
Clip for connection with a
grounding wire
IC
A conductive polyvinyl bag IC
Conductive sponge

– 3 –
(6) Use a three wire type soldering iron including a grounding wire.
Bare copper wire (for body earth)
Working
table
Resistor of 1 M (1/2W)
Earth wire
Fig. 3. Grounding of the working table
Screw stop at the screwed
part using a rag plate
Soldering iron
Grounding
wire
Fig. 4. Grounding a soldering iron
Use a high insulation mode (100V, 10M or higher) when ordinary iron is to be used.
(7) In checking circuits for maintenance, inspection or some others, be careful not to have the test probes of
the measuring instrument shortcircuit a load circuit or the like.
Metal plate (of aluminium, stainless steel, etc.)
Staple

– 4 –
1. In quiet or stop operation, slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally,
but this noise is not abnormal for the operation.
2. When it thunders near by, it is recommend to stop the operation and to disconnect the power cord plug
from the power outlet for safety.
3. 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 air conditioner will
not start automatically. Re-press ON/OFF button after 3 minutes from when the unit off or power recovery.
4. If the room air conditioner is stopped by adjusting thermostat, or missoperation, and re-start in a moment,
there is occasion that the cooling and heating operation does not start for 3 minutes, it is not abnormal
and this is the result of the operation of IC delay circuit. This IC delay circuit ensures that there is no
danger of blowing fuse or damaging parts even if operation is restarted accidentally.
5. This room air conditioner should not be used at the cooling operation when the outside temperature is
below –10°C (14°F).
6. This room air conditioner (the reverse cycle) should not be used when the outside temperature is below
–15°C (5°F).
If the reverse cycle is used under this condition, the outside heat exchanger is frosted and efficiency falls.
7. When the outside heat exchanger is frosted, the frost is melted by operating the hot gas system, it is not
trouble that at this time fan stops and the vapour may rise from the outside heat exchanger.
CAUTION

– 5 –
SPECIFICATIONS
MODEL
FAN MOTOR
FAN MOTOR CAPACITOR
FAN MOTOR PROTECTOR
COMPRESSOR
COMPRESSOR MOTOR CAPACITOR
OVERLOAD PROTECTOR
OVERHEAT PROTECTOR
FUSE (MICRO COMPUTER CIRCUIT)
POWER RELAY
POWER SWITCH
TEMPORARY SWITCH
TEST/SERVICE SWITCH
TRANSFORMER
VARISTOR
NOISE SUPPRESSOR
THERMOSTAT
REMOTE CONTROL SWITCH (LIQUID CRYSTAL)
FUSE CAPACITY
RAK-70PPA
30 W
NO
NO
–
NO
NO
NO
3.15A
G4A
NO
YES
NO
NO
416NR
NO
YES(IC)
YES
NO
NO
JU1015D9
NO
YES (INTERNAL)
YES
3.15A
G4A
NO
NO
YES
NO
450NR
NO
YES(IC)
NO
30 A TIME DELAY FUSE
---------- ❈ 1850g UNIT
REFRIGERANT CHARGING
VOLUME
(Refrigerant R410A) CHARGELESS
PIPES (MAX. 30m)
PIPES (MIN. 3m)
RAC-70WPA
47 W

– 6 –
Figure showing the installation of Indoor and Outdoor unit
●The difference in height
between the indoor and
outdoor unit should be kept
max 20m.
●The connecting pipe,
no matter big or small,
should all be insulated
with insulation pipe and
then wrapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient, please
use commercial products).

– 7 –
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.
Make sure to connect earth line. The sign in the figure indicates prohibition.
Indicates the instructions that must be followed.
● Please keep this manual after reading.
PRECAUTIONS DURING OPERATION
● Avoid an extended period of direct air flow for your health.
W
A
R
N
I
N
G
!● 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.
● Do not use any conductor as fuse wire, this could cause fatal accident.
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
A
R
N
I
N
G
!
●During thunder storm, disconnect and turn off the circuit breaker.
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.
●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 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.
●Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its
mist flows to the indoor unit. The oil will deposit on the heat exchanger, thereby reducing
the indoor unit performance and may deform and in the worst case, break the plastic
parts of the indoor unit.
CAUTION
!
!
●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.

– 8 –
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 can be used by children aged from 8 years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children
without supervision.
●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.
!

– 9 –
INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
PRE-FILTER
To prevent dust from coming into the indoor unit.
(Refer page 15)
FRONT PANEL (AIR INLET).
INDOOR UNIT INDICATORS
Light indicator showing the operating condition.
(Refer page 10)
HORIZONTAL DEFLECTOR ●VERTICAL
DEFLECTOR (AIR OUTLET)
REMOTE CONTROLLER
Send out operation signal to the indoor unit. So
as to operate the whole unit.
(Refer Remote Control manual)
WIDTH (mm)
1150
850
MODEL
RAK-70PPA
RAC-70WPA
HEIGHT (mm)
333
800
DEPTH (mm)
245
298
MODEL NAME AND DIMENSIONS
OUTDOOR UNIT
DRAIN PIPE
Condensed water drain to outside.
CONNECTING CORD
AIR INLET (BACK, LEFT SIDE)
AIR OUTLET
●Air purifying filters are not washable. It is recommended to use vacuum to clean it. It can be use for 1
year time. Type number for this air purifying filter is <SPX-NTW2>. Please use this number for ordering
when you want to renew it.
●Air purifying filters 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.
NOTE

– 10 –
INDOOR UNIT INDICATORS
TEMPORARY SWITCH
OPERATION INDICATOR
TIMER LAMP
This lamp lights when the timer is working.
OPERATION LAMP
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.
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
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 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.
Temporary Switch
Press
Non-conductor Stick

– 11 –
Minimum Maximum Minimum Maximum
Indoor Dry bulb °C 21 32 20 27
Wet bulb °C 15 23 12 19
Outdoor Dry bulb °C 21 43 2 21
Wet bulb °C 15 26 1 15
Note
●The recommended temperature range for safety testing should be as below:
Cooling Heating
CIRCUIT BREAKER
When you do not use the room air conditioner, set the circuit breaker to “OFF”.

– 12 –
THE IDEAL WAYS OF OPERATION
Suitable Room Temperature Install curtain or blinds
Ventilation Effective Usage Of Timer
Do Not Forget To Clean The Pre-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 pre-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.

– 13 –
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 12W 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.
Interference From Electrical Products
!
Caution
To avoid noise interference, please place the indoor
unit and its remote controller at least 1m away from
electrical products.
Inverter-type
fluorescent
lamp.
TV
To prevent
interference,
place at least
1m away.
OFF

– 14 –
CAUTION
CAUTION
NOTE
Claws
(4 places)
!
!
1
2
3
4
ATTACHING THE AIR PURIFYING FILTERS
Open the front panel
●Pull up the front panel by holding it at both sides with
both hands.
Remove the Pre-filter
●Push upward to release the claws and pull out the
Pre-filter.
Attaching the air purifying filters
●Attach the air purifying filters to the frame by gently
compress its both sides and release after insertion
into Pre-filter frame.
Attach the Pre-filters
●Attach the Pre-filters by ensuring that the surface
written “FRONT” is facing front.
●After attaching the Pre-filters, push the front panel at
three arrow portions as shown in figure and close it.
Cleaning and maintenance must be carried out when filter lamp lights. Before cleaning, stop operation
and switch off the power supply.
Do not bend the air purifying filter as it
may cause damage to the structure.
Please do not smell direct from source
of filter.
●In case of removing the air purifying filters, please follow the above procedures.
●The cooling capacity is slightly weakened and the cooling speed becomes slower when the air purifying
filters are used. So, set the fan speed to "HIGH" when using it in this condition.
●Do not operate the air conditioner without Pre-filter. Dust may enter the air conditioner and fault may
occur.

– 15 –
CAUTION
!
1
2
3
MAINTENANCE
Cleaning and maintenance must be carried out only by qualified service personnel.
Before cleaning, stop operation and switch off the power supply.
CAUTION
!
1. PRE-FILTER
Clean the Pre-filter, as it removes dust inside the room. In case the Pre-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
Pre-filter following the procedure below.
Open the front panel and remove the Pre-filter
●Gently lift and remove the air purifying filters
from the air purifying filter frame.
Vacuum dust from the Pre-filter and air purifying
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.
●Re-insert the air purifying filter to the filter frame.
Set the Pre-filter with “FRONT” mark facing front,
and slot them into the original state.
●After attaching the Pre-filters, push the front
panel at three arrow portions as shown in
figure and close it.
●Do not wash with hot water at more than 40°C. The pre-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 pre-filter may shrink.
PROCEDURE

– 16 –
2. Washable Front Panel
Removing the Front Panel Attaching the Front Panel
!
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.
● 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.
● 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.
● Move the projections of the left and right arms
into the Flanges in the unit and securely insert
them into the holes.
Arm
Hole Projection
Flanges

– 17 –
1
2
3
REGULAR INSPECTION
PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONNEL 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).
Cleaning and maintenance must be carried out only by qualified service personnel. Before cleaning, stop
operation and switch off the power supply.
!
CAUTION
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.
Confirm
Air Blow

– 18 –
AFTER SALE SERVICE AND WARRANTY
When it does not operate
● Is the fuse all right?
● Is the voltage extremely high or low?
● Is the circuit breaker “ON”?
● Is the setting of operation mode different from other indoor units?
● Is the pre-filter blocked with dust?
● 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?
● Are the air inlets or air outlets of indoor and outdoor units
blocked?
● Is the fan speed “LOW” or “SILENT”?
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 pre-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
If the remote controller is not
transmitting a signal. ● Do the batteries need replacement?
● Is the polarity of the inserted batteries correct?
Remote controller
display is dim or blank.)
● If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service
parts centers.
● 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.
WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.

– 19 –
PREPARATION BEFORE OPERATION
■To install the batteries
■To fix the remote controller holder to the wall
1. Slide the cover to take it off.
2. Install two dry batteries AAA.LR03 (alkaline).
The direction of the batteries should match the
marks in the case.
3. Replace the cover at its original position.
1. Choose a place from where the signals can reach the unit.
2. Fix the remote controller holder to a wall, a pillar or similar
location with the provided screws.
3. Place the remote controller in the remote controller holder.
NOTE
Notes on batteries
●When replacing the batteries, use batteries of the same
type, and replace both old batteries together.
●When the system is not used for a long time, take the
batteries out.
● The batteries will last for approximately 1 year. However, if
the remote controller display begins to fade and degradation
of reception performance occurs within a year, replace both
batteries with new size AAA.LR03 (alkaline).
● The attached batteries are provided for the initial use of
the system.
The usable period of the batteries may be short depending
on the manufactured date of the air conditioner.
Notes on the remote controller
● Never expose the remote controller to direct sunlight.
● Dust on the signal transmitter or receiver will reduce the
sensitivity. Wipe off dust with soft cloth.
● Signal communication may be disabled if an electronic-
starter-type fluorescent lamp (such as inverter-type lamps)
is in the room. Consult the shop if that is the case.
●If the remote controller signals happen to operate another
appliance, move that appliance to somewhere else, or
consult the service shop.
●When the remote controller is not in use, please close the
slide cover to prevent failure.
Remote controller
Screws
Remote controller holder