Hitachi RAS-07G4 User manual

NO. 0198E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
DECEMBER 2003 Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS
RAS-07G4
RAS-09G4
RAS-14G4
CONTENTS
SPECIFICATIONS ----------------------------------------------------- 5
HOW TO USE ---------------------------------------------------------- 8
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 30
MAIN PARTS COMPONENT ------------------------------------- 32
WIRING DIAGRAM -------------------------------------------------- 34
PRINTED WIRING BOARD LOCATION DIAGRAM ------- 37
BLOCK DIAGRAM --------------------------------------------------- 39
BASIC MODE --------------------------------------------------------- 41
REFRIGERATING CYCLE DIAGRAM ------------------------- 47
DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 49
AUTO SWING FUNCTION ---------------------------------------- 57
SERVICE CALL Q & A -------------------------------------------- 58
TROUBLE SHOOTING --------------------------------------------- 63
PARTS LIST AND DIAGRAM ------------------------------------ 66
RAS-07G4/RAC-07G4
RAS-09G4/RAC-09G4
RAS-14G4/RAC-14G4
COOLING
After installation
RAC-14G4
RAC-07G4
RAC-09G4
(WALL TYPE)
INDOOR UNIT
RAS-07G4
780
280
210
9.0
OUTDOOR UNIT
RAC-07G4
INDOOR UNIT
RAS-09G4
OUTDOOR UNIT
RAC-09G4
INDOOR UNIT
RAS-14G4
OUTDOOR UNIT
RAC-14G4
700
570
210
32
750
570
280
38
780
280
210
9.0
700
570
210
32
780
280
210
9.0
1 PHASE, 50 Hz, 220-230-240V
590-610-630
2.80-2.80-2.80
2.10
7,160
1 PHASE, 50 Hz, 220-230-240V
890-900-950
4.20-4.10-4.10
2.90
9,900
1 PHASE, 50 Hz, 220-230-240V
1060-1090-1120
5.00-5.00-4.90
3.50
11,940

– 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 1MΩor 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.
DANGER
First, I must disconnect
the power cord plug
from the power outlet.

– 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 relative
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 one M ohm 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
2
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 stopping 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 nearby, it is recommended 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 airconditioner 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.
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 (50°F).
!
CAUTION

– 5 –
SPECIFICATIONS
MODEL
FAN MOTOR
FAN MOTOR CAPACITOR
FAN MOTOR PROTECTOR
COMPRESSOR
COMPRESSOR MOTOR CAPACITOR
OVERLOAD PROTECTOR
OVERHEAT PROTECTOR
FUSE (for MICROPROCESSOR)
POWER RELAY
POWER SWITCH
TEMPORARY SWITCH
SERVICE SWITCH
TRANSFORMER
VARISTOR
FUSE CAPACITY (TIME DELAY FUSE)
THERMOSTAT
REMOTE CONTROL SWITCH (LIQUID CRYSTAL)
RAS-07G4
RAS-09G4
RAS-14G4
20 W
NO
NO
–
NO
NO
NO
3.15A
G4A
YES
YES
YES
NO
450NR
---------
YES(IC)
YES
---------
---------
20 W 30 W
1.5µF, 450 VAC 2.5µF, 450VAC
NO
20µF, 450 VAC 25µF, 450 VAC
YES
NO
NO
NO
NO
NO
NO
NO
NO
10 A 15 A
NO
NO
1050g
10m
UNIT
MAX. PIPES
REFRIGERANT CHARGING
VOLUME
(Refrigerant 410A)
RAC-07G4 RAC-14G4RAC-09G4
5RS080 5PS132
650g600g
5PS112
15m
WITHOUT REFRIGERANT BECAUSE COUPLING IS FLARE TYPE

– 6 –
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
inner diameter ø16mm
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
The difference in height
between the indoor and
outdoor unit should be
kept max 5m.
The connecting pipe, no
matter big or small,
should all be insulated
with insulation pipe and
then warapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
MODEL RAS-07G4 / RAC-07G4 and RAS-09G4 / RAC-09G4
Figure showing the installation of Indoor anf Outdoor unit
The installation height of indoor unit must be 2.3m or more from floor in a non public area
CAUTION
!

–7 –
above 50mm
above 100mm
above 0.45m
above 300mm
must not bend
above 100mm
2,300mm or more
12
Maximum pipe length 15m Minimum pipe length 5m
above 200mm
above 700mm
above 200mm
above 50mm when
installed on the
ceiling of balcony
()
above 100mm
above 100mm
give clearance as
wide as possible
Plug
The installation height of indoor unit must be 2.3m or more from floor in a non public area
CAUTION
!
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
inner diameter ø16mm
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
The difference in height
between the indoor and
outdoor unit should be
kept max 5m.
The connecting pipe, no
matter big or small,
should all be insulated
with insulation pipe and
then warapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
MODEL RAS-14G4 / RAC-14G4
Figure showing the installation of Indoor anf Outdoor unit

– 8 –
!
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
!

– 9 –
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.

– 10 –
NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT
Air filter
To prevent dust from coming into the indoor unit.
(Refer page 26)
Front panel
Indoor unit indicators
Light indicator showing the operating condition.
(Refer page 11)
Horizontal deflector ●Vertical deflector
(Air Outlet)
(Refer page 17)
Remote controller
Send out operation signal to the indoor unit. So as to
operate the whole unit.
(Refer page 12)
OUTDOOR UNIT
Drain pipe
Condensed water drain to outside.
Connecting cord and insulation pipe for piping
Air inlet (Back, Left side)
Air outlet
Drain pipe
Condensed water drain to outside.
Connecting cord and insulation pipe for piping
Air inlet (Back and Left side)
Air outlet
WIDTH (mm)
780
700
750
MODEL
RAS-07G4/09G4/14G4
RAC-07G4/09G4
RAC-14G4
HEIGHT (mm)
280
570
570
DEPTH (mm)
210
210
280
MODEL NAME AND DIMENSIONS
RAC-07G4
RAC-09G4
RAC-14G4

– 11 –
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
FILTER LAMP
When the device is operated for a total of about 100
hours, the FILTER lamp lights indicates that it is time
to clean the filter. The lamp goes out when the
“ (AUTO SWING)” button is pressed while the
device is on “STANBY MODE”.
OPERATION LAMP
This lamp lights during operation.
TIMER LAMP
This lamp lights when the timer is working.
TEMPORARY
SWITCH
TEMPORARY
SWITCH
Press
Temporary Switch
Non-conductor Stick

– 12 –
RESET
˚CH
AUTO
COOL
DEHUMIDIFY
CIRCULATION
FAN
FAN SPEED
LOW
MED
HI
SLEEPING
STOP (CANCEL)
START (RESERVE)
START/STOP
TIME
TIMER SET
TIMER SELECTOR
ON TIMER
OFF TIMER
AUTO SWING
˚CH
NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT
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.
●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 will initially require approximately 10
seconds to respond to commands and operate.
●Signal emitting window/transmission sign
Point this window toward the indoor unit when controlling it.
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.
●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).
●AUTO SWING button
Controls the angle of the horizontal air deflector.
●TIMER control
Use this button to set the timer.
●RESERVE button Time setting reservation.
●CANCEL button Cancel time reservation.
Precautions for Use
●Do not put the remote controller in the following places.
●Under 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.

–13 –
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.
■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.
°C
■CONDITION OF AUTOMATIC OPERATION
START
STOP
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.
1

–14 –
■As the settings are stored in memory in the remote controller, you
only have to press the (START/STOP) button next time.
RESET
COOLING OPERATION
Use the device for cooling when the outdoor temperature is 22-42°C.
If indoor humidity is very high (80%), 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 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
button (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 some how 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.
1
2
3
START
STOP

–15 –
■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.
RESET
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.
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.
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

–16 –
FAN SPEED (AUTO) ..... When the AUTO fan speed mode is set in the cooling operation:
●When the difference of room temperature and setting temperature is
large, fan starts to run at HI speed.
●After room temperature reaches the preset temperature, the cooling
operation, which changes the fan speed and room temperature to obtain
optimum conditions for natural healthful cooling will be performed.
For the cooling operation
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
RESET
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

–17 –
ADJUSTING THE AIR DEFLECTOR
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.
●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.
!
CAUTION
●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.
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.
RESET
!
CAUTION
●When operating the unit in cooling operation with the air deflector facing down and moving automatically
for a long period of time, water will condensed on the air deflector and drips down occasionally. This
will wet your furniture.
Vertical
about 15
about 60
When cooling,
dehumidifying

– 18 –
RESET
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.
TIME, DAY,
MONTH
(current time,
day, month)
OFF TIMER
ON TIMER
RESERVE
CANCEL
M D
M D
AM
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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 10 seconds.
●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 Press 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 automatically turn on earlier so that the preset
temperature can be 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:
The device will turn off at 10:30 p.m. and then automatically
turn on earlier so that the preset temperature can be reached
at 7:00 a.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.
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