Hitachi RAC-25WPB User manual

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
SERVICE MANUAL
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
SPECIFICATIONS
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 6
HOW TO USE ----------------------------------------------------------------------10
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 43
MAIN PARTS COMPONENT --------------------------------------------------- 48
WIRING DIAGRAM ---------------------------------------------------------------- 50
CIRCUIT DIAGRAM --------------------------------------------------------------- 52
After installation
BLOCK DIAGRAM ----------------------------------------------------------------- 55
BASIC MODE ----------------------------------------------------------------------- 56
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 67
DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 73
SERVICE CALL Q & A ---------------------------------------------------------- 98
TROUBLE SHOOTING -----------------------------------------------------------102
PARTS LIST AND DIAGRAM --------------------------------------------------1
HHAW
RAK-18PPB/RAC-18WPB
RAK-25PPB/RAC-25WPB
RAK-35PPB/RAC-35WPB
RAK-50PPB/RAC-50WPB
INDOOR UNITOUTDOOR UNIT
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
RAK-18P RAC-18W RAK-25P RAC-25W RAK-35P RAC-35W RAK-50P RAC-50W
(KW)
(B.T.U./h)
(KW)
(B.T.U./h)
W780 660([phone]([phone]([phone](+91)
H280 530 280 530 295 548 295 600
D218 278([phone]([phone](+27.5) 230 299(+47)
MODEL
POWER SOURCE
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
COOLING
HEATING
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
1,090 (250 1,460)
DIMENSIONS
(mm)
1,560 (500 2,100)
3.12-2.97
2.00 (0.90 2.50)
8,530 (3,070 10,580)
580 (250 970)
2.50 (0.90
27.57.5 27.57.5 3410 10
3.20)
3.49-3.34
11,600 (3,070 15,010)
880 (250 1,250)
NET WEIGHT (Kg)
TYPE DC INVERTER
1 PHASE,50HZ,220-230V 1 PHASE,50HZ,220-230V 1 PHASE,50HZ,220-230V
550 ( 700 (250
)010 , 1 1,290)
4.56-4.36
3.40 (0.90 4.40)
11,600 (3,070 15,010)
4.87-4.66
1,100 (250 1,700)
5.51-5.27
14,330 (3,070 17,060)
3.75-3.59
2.50 (0.90 3.10)
8,530 (3,070 10,580)
7.30-6.98
3.50 (0.90 4.00) 5.00 (1.90 5.20)
11,940 (3,070 13,650) 17,060 (6,480 17,740)
20,470 (7,510 24,910)
7.93-7.59
1,660 (500 2,750)
4.20 (0.90 5.00) 6.00 (2.20 7.30)
250
Hitachi Household Appliances(Wuhu) Co., Ltd.
PB PB PB PB PB PB PB PB
RAC-18WPB
RAC-25WPB
RAK-18PPB
RAK-25PPB
RAC-50WPB
RAC-35WPB
1 PHASE,50HZ,220-230V
RAK-35PPB
RAK-50PPB
NO.0080E-3
38
40
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY-------------70
RAR-5E2
RAR-5E1

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DANGER
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 manufactures during maintenance and handling thereof. (They apply the same to handling of
abnormal goods such as rejected goods being returned.)
2. Object parts
(1) Microcomputer
(2) Integrated circuits (I.C.)
(3) Field effective transistor (F.E.T.)
(4) P.C. boards or the like to 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.)
(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.
HITACH I IC401TH 1 ,188UV
Fig. 1 Conductive container
A conductive polyvinyl bag
IC
IC
Conductive sponge
Fig. 2 Body earth
Body earth (Elimik conductive band)
Clip for connection with
a grounding wire
1MΩ
3

(6) Use a three wire type soldering iron including a grounding wire.
Fig.4 Grounding a solder iron
Use a high insulation mode (100V, 10MΩor 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 short circuit a load circuit or the like.
Bare copper wire (for body earth)
Metal plate (of Al. stainless steel, etc.)
Working table
Resistor 1MΩ(1/2W)
Earth wire
Staple
Fig.3 Grounding of the working table
soldering iron
Grounding wire
Screw stop at the screwed
part using a rag plate
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 turn off the circuit breaker for safety.
3. In the event of power failure,the room air conditioner will restare automatically in the previously
mode once the power is restored. In the event of power failure during TIMER operation, the room air comditioner
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
selected
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
NOISE SUPPRESSOR
THERMOSTAT
REMOTE CONTROL SWITCH (LIQUID
CRYSTAL)
NO
NO
NO
YES(INTERNAL)
YES
G4A-1A
NO
NO
YES
YES
YES(IC)
NO
WITHOUT REFRIGERANT BECAUSE
COUPLING IS FLARE TYPE.
UNIT
PIPES
(MAX. 20m)
REFRIGERANT CHARGING
VOLUME
(Refrigerant 410A)
RAC-18WPB RAC-35 PB
NO
NO
–
NO
NO
NO
NO
YES
NO
NO
YES(IC)
YES
---------- 1050g 1250g
ASD084SFNA7JK1
RAK-18PPB
RAC-25WPB
RAK-25PPB
RAK-35PPB
RAK-50PPB
W
(MIN. 3m)
47W (DC120~380V)
30W (DC325 V)
950g
RAC- PB50W
5RS132ZBA21
3.15A 15A, 2A, 3A, 3.15A 25A, 2A, 3A, 3.15A
NO
YES
450NR, ERZVA431
450NR
R
6
YES

Figure showing the installation of lndoor and Outdoor unit
MODEL RAK-18PP /RAC-18WP
B B
RAK-25PP /RAC-25WPB B above
50mm
above 50mm
above 50mm
m
m
0
0
3
t
u
o
b
a
m
5
4
.
0
t
u
o
b
a
d
n
e
b
t
o
n
t
s
u
m
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
•The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
•The difference in height between
the indoor and outdoor unit
should be kept below 10m.
•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.
Inner diameter 16mm
Please use insulated drain hose for
the indoor piping (commercial
product)
Be sure to
completely
seal any gap
with putty.
2,300 mm or more
The clearances of the
unit from top, left, right
and front are specified
in figure below. At least
three of the above sides
must be open air.
Plug
Maximum pipe length 20m Minimum pipe length 3m
give clear
as wide a
possible
200mm
above 200mm
above 100mm
300mm
above
above 50mm
7
above

Figure showing the installation of lndoor and Outdoor unit
MODEL RAK-35PP /RAC-35WP
B B
above
50mm
above 50mm
above 50mm
t
u
o
b
a300mm
a
t
u
o
b0.45m
must
t
o
nbend
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
sThe refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
sThe difference in height between
the indoor and outdoor unit
should be kept below 10m.
sThe 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.
Inner diameter 16mm
Please use insulated drain hose for
the indoor piping (commercial
product)
above 100mm
above 300mm
above 50mm
give clearance
as wide as
possible
above
200mm
Be sure to
completely
seal any gap
with putty.
above 50 mm when
installed on the
ceiling of balcony
above 200mm
2,300 mm or more
Maximum pipe length 20m Minimum pipe length m3
Plug
8

Figure showing the installation of lndoor and Outdoor unit
MODEL RAK-50PPB/RAC-50WPB
above
50mm
above 50mm
above 50mm
t
u
o
b
a 300mm
a
t
u
o
b 0.45m
must
t
o
n bend
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
sThe refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
sThe difference in height between
the indoor and outdoor unit
should be kept below 10m.
sThe 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.
Inner diameter 16mm
Please use insulated drain hose for
the indoor piping (commercial
product)
above 100mm
above 00mm
above 50mm
give clearance
as wide as
possible
above
200mm
Be sure to
completely
seal any gap
with putty.
above 50 mm when
installed on the
ceiling of balcony
above 200mm
2,300 mm or more
Maximum pipe length 20m Minimum pipe length m3
3
Plug
9

ENGLISH
– 1 –
– 1 –
Remote Controller Manual
Remote Controller manual Page 1~27
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
MODEL
RAR-5E2
– 2 –
PREPARATION BEFORE OPERATION
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.
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.
Remote controller
Screws
Remote controller holder
ƵTo install the batteries
3. Replace the cover at its original position.
ƵTo fix the remote controller holder to the wall
NOTE
Notes on batteries ƽWhen replacing the batteries, use batteries of the same
type, and replace both old batteries together.
ƽWhen the system is not used for a long time, take the
batteries out.
ƽ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).
ƽ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
ƽNever expose the remote controller to direct sunlight. ƽDust on the signal transmitter or receiver will reduce the
sensitivity. Wipe off dust with soft cloth.
ƽSignal communication may be disabled if an electronic-
starter-type uorescent lamp (such as inverter-type lamps)
is in the room. Consult the shop if that is the case.
ƽIf the remote controller signals happen to operate another
appliance, move that appliance to somewhere else, or consult the service shop.
ƽWhen the remote controller is not in use, please close the
slide cover to prevent failure.
10

– 3 –
ENGLISH
PREPARATION BEFORE OPERATION
ƵTo set calendar and clock
1. Press (RESET) button when first time setting.
"Year" blinks.
2. Press (TIME) button to set the current year.
3. Press (CLOCK) button. Next, "Day" and
"Month" blink.
4. Press (TIME) button to set the current day and
month.
5. Press (CLOCK) button. Next, "CLOCK" blinks.
6. Press (TIME) button to set the clock to the current
time.
7. Press (CLOCK) button.
Calendar and clock are set. To modify the calendar and clock, press (CLOCK)
button. Then follow steps 1 to 7. Calendar and clock shall be set again after changing batteries. After changing the batteries, 1. Press (RESET) button.
2. Direct remote control towards indoor unit and press
(INFO) button.
3. The calendar and clock from indoor unit will be transmitted. ƵCalendar and clock will not be transmitted from indoor
unit when the following occurs:
ƽWhen there is a power failure.
ƽWhen breaker is OFF by user (unit is not in STANDBY
MODE).
NOTE
Note on setting the calendar and clock. ƽIf the calendar and clock are not set, the ON-timer, OFF-timer and Weekly Timer cannot be set. ƽIf the calendar and clock are not set correctly, the ON-timer, OFF-timer and Weekly Timer will not
operate correctly.
ƽWhen the ON-timer, OFF-timer and Weekly Timer are set, the calendar and clock cannot be changed. If
need to change the calendar and clock, ON-timer, OFF-timer and Weekly Timer need to be cancelled.
– 4 –
NAMES AND FUNCTIONS OF REMOTE CONTROLLER
REMOTE CONTROLLER ƽThis controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is
controlled electronically, the range of controller 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.
ƽHandle the remote controller with care. Dropping it or getting it wet may compromise its signal transmission
capability.
ƽAfter new batteries are inserted into the remote controller, the unit will initially require approximately 10
seconds to respond to commands and operate.
ƽWhen remote controller is not in use for about 3 minutes during OFF condition, indicated by on the
display, the LCD will turn off.
ƽDuring clock setting, the LCD will turn off about 10 minutes later if the remote controller is not in use. ƽWhen pressing any button, the LCD will turn on. ƽThe LCD will not turn off during TIMER setting.
Signal Transmitting/Receiving
Window Point this window towards the indoor unit when controlling it.
Sensor A temperature sensor inside the remote controller senses ambient temperature around the remote- controller. Display ROOM TEMPERATURE setting Buttons Press these buttons to set the room temperature. Press the [ ] button to raise the room
temperature. Press the [ ] button to lower the room temperature. Keep pressing and the value will change more quickly.
ECO Button Use this button to set the ECO
START/STOP button Press this button to start
operation. Press it again to stop operation.
Transmission sign
The transmission sign lights up
when a signal is sent.
FAN SPEED selector Button This determines the fan speed.
Every time you press this button
the ange from
(AUTO) (HIGH)
(MED) (LOW)
(SILENT) (This button allows
optimal or preferred
fan speed for each operation mode).
䇆
䇆
䇆
䇆
airflow rate will ch
selection of
This indicates the room temperature selected, current time, timer status, function and airflow rate selected.
mode.( p.14)
11

– 5 –
ENGLISH
MODE SELECTOR AUTO HEAT DEHUMIDIFY COOL FAN FAN SPEED AUTO SILENT LOW MED HIGH START / STOP ECO
Precautions for Use
ƽ
Do not put the remote controller in the following places.
ƽ
Under direct sunlight.
ƽ
In the vicinity of a heater.
ƽ
Handle the remote controller carefully. Do not drop it on the floor, and protect it from water.
ƽ
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.
ƽ
If you press the MODE selector button during operation, the device may stop for about 3 minutes for
protection.
POWERFUL Button Use this button to set the POWERFUL mode.
INFORMATION Button
ONE TOUCH CLEAN Button ON / OFF TIMER setting Buttons
MODE selector Button Use this button to select the
operating mode. Every time you press this button, the mode will change from (AUTO)
(HEAT) (DEHUMIDIFY)
(COOL) and (FAN)
cyclically.
SILENT Button Use this button to set the SILENT
mode.
AUTO SWING (Vertical) Button Controls the angle of the
horizontal air deflector.
WEEKLY TIMER setting Buttons
LEAVE HOME Button
NAMES AND FUNCTIONS OF REMOTE CONTROLLER
SLEEP TIMER Button Use this button to set the sleep
timer.
FAN POWERFUL SILENT INFO SLEEP TIMER AUTO SWING (VERTICAL) LEAVE HOME CLEAN DAY PROGRAM NO.
ON / OFF TIMER
TIME OK DELETE COPY / PASTE CANCEL SEND CLOCK
( p.12)
( p.26) ( p.16)
( p.15) ( p.17)
( p.18)
( p.13)
( p.20)
( p.11)
– 6 –
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT or COOL depending on the current room temperature. The selected mode of operation will change when the room temperature varies. However, the mode of operation will not change when indoor unit is connected to multi type outdoor unit.
VARIOUS FUNCTIONS
ƵAuto Restart Control
ƽIf there is a power failure, operation will be automatically restarted when the power is resumed with previous operation
mode and airflow direction.
(As the operation is not stopped by remote controller.)
ƽIf you intend not to continue the operation when the power is resumed, switch off the power supply.
When you switch on the circuit breaker, the operation will be automatically restarted with previous operation mode
and air flow direction. Note: 1. If you do not require Auto Restart Control, please consult your sales agent.
2. Auto Restart Control is not available when Timer or Sleep Timer mode is set.
Press the MODE selector button so that the display indicates the
(AUTO) mode of operation.
ƽ When AUTO has been selected, the device will automatically
determine the mode of operation, HEAT or COOL depending on the current room temperature. However the mode of operation will not change when indoor unit is connected to multi type outdoor unit.
ƽIf the mode automatically selected by the unit is not satisfactory,
manually change the mode setting (HEAT, DEHUMIDIFY, COOL or FAN).
Press the (FAN SPEED) button to select AUTO, HI, MED, LOW or
SILENT.
Press the (START/STOP) button.
Operation starts with a beep. Press the button again to stop operation. Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).
The temperature setting and the actual room temperature may vary
depending on conditions.
START
STOP
1 3
2
Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting).
(AUTO) (HIGH) (MED)
(LOW)
(SILENT)
ƵAs the settings are stored in the memory the remote controller, you
(START/STOP) button next time.only have to press the
of
12

– 7 –
ENGLISH
HEATING OPERATION
ƽUse the device for heating when the outdoor temperature is under 21°C.
When it is too warm (over 21°C), the heating function may not work in order to protect the device.
ƽ
Press the MODE selector button so that the display indicates
(HEAT).
Set the desired FAN SPEED with the (FAN SPEED) button
(the display indicates the setting).
Set the desired room temperature with the TEMPERATURE buttons (the display indicates the setting). The temperature setting and the actual room temperature may vary depending on conditions.
Press the (START/STOP) button. Heating operation starts with
a beep. Press the button again to stop operation.
Ƶ ƵDuring AUTO fan, the fan speed automatically changes as below:
ƽWhen the difference between room temperature and setting temperature
is large, fan starts to run at HI speed.
ƽAfter room temperature reaches the preset temperature, fan speed
will be changed to lower speed to obtain optimum room temperature condition for natural healthy heating.
START
STOP
ƵDefrosting
Defrosting will be performed about once an hour when frost forms on the heat exchange of the outdoor unit, for 5~10 minutes each time. During defrosting operation, the operation lamp blinks in a cycle of 3 seconds on and 0.5 second off. The maximum time for defrosting is 20 minutes. (If the piping length used is longer than usual, frost is likely to form.)
1
2
3
In order to maintain reliability of the device, please use this device when outdoor temperature is above -15°C.
(AUTO) (HIGH) (MED)
(LOW)
(SILENT)
ƵAs the settings are stored in the memory of the remote controller, you only
have to press the (START/STOP) button next time.
However, if the indoor unit is connected to multi type outdoor unit, the maximum time for defrosting is 15 minutes.
– 8 –
DEHUMIDIFYING OPERATION
ƵDehumidifying Function
ƽWhen 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.
ƽThe preset room temperature may not be reached depending on the number of people present in the
room or other room conditions.
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.
Press the (START/STOP) button. Dehumidifying operation
starts with a beep. Press the button again to stop operation.
ƵAs the settings are stored in the memory of the remote controller, you
(START/STOP) button next time.
START
STOP
Press the MODE selector button so that the display indicates (DEHUMIDIFY).
The fan speed is set at LOW. Press (FAN SPEED) button to select SILENT or LOW fan
speed.
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.
1
only have to press the
2
13

– 9 –
ENGLISH
COOLING OPERATION
Use the device for cooling when the outdoor temperature is -10~ 43°C. If indoors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.
Press the MODE selector button so that the display indicates (COOL). Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting). Set the desired room temperature with the TEMPERATURE buttons (the display indicates the setting). The temperature setting and the actual room temperature may vary 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 user set the temperature below the current room temperature.
Ƶ
As the settings are stored in the memory of the remote controller, you only
have to press the (START/STOP) button next time.
Ƶ During AUTO fan, the fan speed automatically changes as below:
ƽWhen the difference between room temperature and setting tem-
perature is large, fan starts to run at HI speed.
ƽ After room temperature reaches the preset temperature, fan speed
will be changed to lower speed to obtain optimum room temperature condition for natural healthy cooling.
START
STOP
1
3
(AUTO) (HIGH) (MED)
(LOW)
(SILENT)
2
– 10 –
FAN OPERATION
User can use the device simply as an air circulator.
START
STOP
1 2
Press the MODE selector so that the display indicates
(FAN).
Press the (START/STOP) button. Fan operation starts with
a beep. Press the button again to stop operation.
Set the desired FAN SPEED with the (FAN SPEED) button (the display indicates the setting).
(HIGH) (MED)
(LOW)
(SILENT)
14

– 11 –
ENGLISH
AUTO SWING OPERATION
ƵTo start Vertical Auto Swing ƵTo cancel Vertical Auto Swing
NOTE
ƽDuring cooling and dehumidifying operation, do not keep
the deflectors swinging or in the lower position (in the case
of vertical auto swing) for a long time. It may cause dew
condensation on the deflectors.
Press (AUTO SWING (VERTICAL)) button. The deflector(s) will start to swing up and down.
󰷅󰷅is displayed on the LCD.
Press (AUTO SWING (VERTICAL)) button again. The deflector(s) will stop in the current position.
󰷅󰷅 disappeared from the LCD.
ƽ ƽ
CAUTION
sWhen operating the unit in cooling operation with the air deflector facing down and moving automatically
for a long period of time, water will be condensed on the air deflector and drips down occasionally. This will wet your furniture.
Vertical
When heating, about 50°
When cooling,
dehumidifying
about 40°
about
30°
about 10°
about 40°
When cooling, dehumidifying
When heating
about 10°
about 45°
Horizontal Horizontal
– 12 –
POWERFUL OPERATION
ƽBy pressing (POWERFUL) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN
operation, the air conditioner performs an the maximum power.
●
During POWERFUL operation, cooler or warmer air will be blown out from indoor unit for COOLING of
HEATING operation respectively.
ƵTo start POWERFUL operation ƵTo cancel POWERFUL operation
1
NOTE
ƽWhen SLEEP mode, ECO mode, SILENT mode or LEAVE HOME mode is selected, POWERFUL
operation is cancelled.
ƽDuring 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).
ƽAfter auto restart, POWERFUL operation is cancelled and previous operation shall start.
For multi model connections, POWERFUL operation may not function depending on operation conditions.
Press (POWERFUL) button during operation.
ƽ
“” is displayed on the LCD.
POWERFUL operation ends in 20 minutes. Then the system automatically operates with the previous settings used before POWERFUL operation.
Press (POWERFUL) button again.
POWERFUL operation stops. “” disappears from the LCD.
ƽ
Press (START/ STOP) button.Or
ƽ
ƽ
15

– 13 –
ENGLISH
SILENT OPERATION
ƽBy pressing (SILENT) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN
operation, the fan speed will change to ultra slow.
ƵTo start SILENT operation ƵTo cancel SILENT operation
Press (SILENT) button during operation.
“ ” is displayed on the LCD. Fan speed will be ultra
slow.
ƽPress (START/STOP) button. Or
ƽPress (SILENT) button again or (FAN SPEED)
button.
Fan speed will return to previous fan speed before SILENT
operation starts.
SILENT operation stops. “” disappears from the LCD.
1
NOTE
ƽWhen POWERFUL operation is selected, SILENT operation is cancelled. Fan speed will return to
previous fan speed before SILENT operation.
ƽAfter auto restart, SILENT operation is cancelled. Fan speed will return to previous
fan speed before SILENT operation.
ƽDuring any operation with fan speed (SILENT), if press (SILENT) button, fan speed will
not change.
ƽ
– 14 –
ECO OPERATION
ƽBy pressing the (ECO) button during AUTO, HEATING,
DEHUMIDIFYING or COOLING operation, the air conditioner performs the "ECO" operation.
1
ƵTo start ECO operation ƵTo cancel ECO operation
Press (ECO) button during operation.
“ ” is displayed on the LCD.
Energy saving operation will start by changing the set
temperature higher or lower automatically and reducing operation
power consumption. This function may vary based on the
ƽ Press (START/STOP) button.Or ƽ Press (ECO) button again.
“” disappears from the LCD.
NOTE
ƽECO function will not be effective when power consumption is low. ƽBy pressing (POWERFUL) button, ECO operation is cancelled. ƽAfter auto restart, ECO operation is cancelled and previous operation mode shall start. ƽFor multi model connections, energy saving operation shall only start by changing set temperature higher
connected outdoor unit.
or lower automatically. However, effectiveness of ECO depends on operation conditions.
ECO operation is an energy saving function by changing set temperature automatically and by limiting the
maximum power consumption value.
ƽ
16

– 15 –
ENGLISH
LEAVE HOME(LH) OPERATION
ƵTo start LEAVE HOME operation
Press (LEAVE HOME) button during stop or operation.
ƽ
Room temperature is set at 10°C and heating operation starts. “ ”, “ ”, “ ”, “ ” is displayed on the LCD.
Press (LEAVE HOME) button during stop or operation.
Room temperature is set at 10°C and heating operation starts. “ ”, “ ”, “ ”, “ ” is displayed on the LCD.
ƽSet number of operation days (1 to 99 days), if needed.
Press (TIME) button to select number of days.
Number of days blink. * Press “
(UP)” to set number of days from 1 day, 2 days, 3
days ..... 98 days, 99 days, 1 day and so on.
* Press “
(DOWN)” to set number of days from 99 days, 98
days, 97 days .... 3 days, 2 days, 1 day, 99 days and so on.
* Number of day is counted when clock indicates 0:00.
ƽ Press (SEND) button to confirm number of operation
days. Display for number of operation days will stop blinking.
ƽPress (CANCEL) button to reset number of operation
days or to have continuous operation.
ƵTo cancel LEAVE HOME operation
ƽPress (START/STOP) button.Or ƽPress (LEAVE HOME) button again. ƽChange to other operation mode by pressing (MODE) button.
NOTE
ƽAfter reaching the set number of operation days for Leave Home or by pressing the (Leave Home) button again, ƽDuring Leave Home operation, fan speed and horizontal air deflector position cannot be changed. ƽBy pressing (Leave Home) button, implementation of Weekly Timer or One Timer only Timer is cancelled. ƽ In case of power supply shut down, after autorestart, all setting for number of days operation will be reset and unit
shall be in continuous operation.
ƽ
For multi connections, when each room is running in different operation mode such as FAN only, COOLING, DEHUMIDIFYING
or AUTO mode, Leave Home operation cannot operate even though it is possible to set Leave Home operation.
In order to start Leave Home operation, all rooms must stop its operation. Then, press (LEAVE HOME) button to
operate Leave Home operation.
ƽ For multi connections, when all rooms are running HEATING operation, it is possible to operate Leave Home operation
by pressing the (LEAVE HOME) button.
ƽ For multi connections, if two or more rooms are set to operate Leave Home operation, the capability to reach the
set temperature at 10°C may not possible. In addition, this also depends on outdoor temperature.
Continuous operation
Day timer operation
Prevent the room temperature from falling too much by setting temperature automatically when no one is at home. This operation is able to operate by" Continuous operation" or " Day timer operation" . Please use " Day timer operation" to set the number of days up to 99 days.
10°C
ƽ
Option 1. Continuous operation. Option 2. Day timer operation.
Return to previous operation mode.Or
othe unit will operate in previous mode.
POWERFUL,SILENT and ECO operations are not applicable during Leave Home.
ƽ
1
– 16 –
CLEAN (ONE TOUCH CLEAN) OPERATION
Drying indoor heat exchanger after cooling operation to prevent mildew.
ƵTo start CLEAN operation ƵTo cancel CLEAN operation
ƽ 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.
“ ”, “ ” is displayed on the LCD.
ƽ Press (START/STOP) button.Or ƽ Press (CLEAN) button again.
1
NOTE
ƽ When CLEAN operation finish, unit will switch OFF automatically. ƽ ƽ For multi connections, when pressing (CLEAN) button, operation is limited to FAN operation. ƽ For multi connections, when one room operates CLEAN operation first, other rooms can operate
COOLING, DEHUMIDIFYING or FAN operation. However, when other rooms need to operate HEATING operation, air conditioner will be in STANDBY mode. After CLEAN operation finish, HEATING operation
will start.
If Weekly Timer or Once Timer is set, there is a need to cancel those timer before operating CLEAN function.
17

– 17 –
ENGLISH
ONCE TIMER (ON/OFF TIMER) OPERATION
The device can be set to turn off at a preset time. 1. Press (OFF-TIMER) button. and blink on the display.
2. Set the "turn-off time" with (TIME) button.
3. After setting, direct the remote controller towards the indoor and press
(SEND) button.
and "set time" lights up instead of blinking.
A beep sound emitted from indoor unit and the (TIMER) lamp on the
indoor unit lights up.
ON TIMER The device will turn on at a designated time. 1. Press (ON-TIMER) button. and blink on the display.
2. Set the "turn-on time" with (TIME) button.
3. After setting, direct the remote controller towards the indoor and press
(SEND) button.
and "set time" light up instead of blinking.
A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor
unit lights up.
ON/OFF TIMER
ƽThe device will turn on (off) and off (on) at the designated time. ƽThe switching occurs first at the preset time that comes earlier. ƽThe arrow mark appears on the display to indicate the sequence of switching
operations.
1. Press (OFF-TIMER) button so that and blink on the
display.
2. Set the "turn-off" time with (TIME) button. After setting, direct the remote
controller towards the indoor and press (SEND) button.
3. Press (ON-TIMER) button so that and set "turn-off" time light up.
The and blink.
4. Set the "turn-on" time with (TIME) button.
5. After setting, direct the remote controller towards the indoor and press
(SEND) button
and set "turn-on" time light up instead of blinking.
A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor
unit lights up.
Ƶ
The timer may be used in three ways: OFF-timer, ON-timer and ON/OFF (OFF/ON)-
timer. Set the current time first because it serves as a reference.
Ƶ
To cancel Reservation
ƽ
Point the signal window of the remote controller towards the indoor unit and press (CANCEL) button.
and "ON or OFF set time" goes out with a beep and the (TIMER) lamp on the indoor unit turns off.
NOTE
ƽ
User can set only one of the OFF-timer, ON-timer or ON/OFF-timer.
ƽ
If WEEKLY TIMER already set, by setting the ONCE TIMER, ONCE TIMER operation is prioritized. When
ONCE TIMER operation is complete, WEEKLY TIMER operation will be activated.
OFF TIMER
1
– 18 –
Press (SLEEP) button during operation. ƽ “ ”, “ ”, “ ”, “OFF”, off time, “ ” and number
of hour are displayed on the remote controller display.
ƽ During ECO SLEEP TIMER operation, fan speed will be ultra ƽ A beep sound emitted from indoor unit and the (TIMER) lamp
on the indoor unit lights up.
Pressing (SLEEP) button repeatedly, the number of hours
ƽ During ECO SLEEP TIMER operation, air conditioner will ƽ
When the ECO SLEEP TIMER has been set, the display on
Press (START/STOP) button.
ƽRoom air conditioner will switch off.
Press (SLEEP) button again until “ ”, “ ”, “ ”,
off time, “ ” and number of hour disappear from the remote
controller display. Press (CANCEL) button.
ƽA beep sound emitted from indoor unit and the (TIMER) lamp
on the indoor unit turns off.
ƽSLEEP TIMER operation is cancelled.
1
1 H 2 H 3 H 7 H
SLEEP TIMER off
will change as below:
continue to operate for the designated number of hours and then turn off. the remote controller indicates the turn off time.
ECO SLEEP TIMER OPERATION
By pressing (SLEEP) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation,
.gnivasygrenenistlusertl.deepsnafehtsecuderdnaerutarepmetmoorehtstfihstinueht
The timer can be set up to a duration of 7 hours.
Set the current time first before operating the ECO SLEEP TIMER operation.
ƵTo start ECO SLEEP TIMER operation
slow.
Example: If ECO SLEEP TIMER is set for 1 hour at 18:00, the switch off time will be at 19:00.
ƵTo cancel ECO SLEEP TIMER operation
18

– 19 –
ENGLISH
ƵTo set SLEEP TIMER and ON TIMER
The air conditioner will be turned off by ECO SLEEP TIMER and turned on by ON TIMER. 1. Set the ON TIMER. 2. Press (SLEEP) button and set ECO SLEEP TIMER.
Direct the remote controller towards the indoor unit and press (CANCEL) button.
ƽ “”, “ ”, “ ”, “OFF”, off time, “ ”, number of hour, "ON" and ON TIMER set time disappear
from the remote controller display.
ƽ A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor unit turns off. ƽ
30 minutes after setting ECO SLEEP TIMER, outdoor fan speed will be reduced to lower the noise level and to 1 hour after setting ECO SLEEP TIMER, set temperature will be slightly shifted. Amount of temperature These automatic operation changes contribute to energy saving without losing comfort. The level of energy consumption depends on outside temperature, room temperature, set temperature or air conditioner type. Cooling operation [diagram representation for illustrative purpose only]
In this case, air conditioner will turn off in 2 hours (at 1:38) and it will be turned on at 6:00 the next morning.
NOTE
ƽ
Heating operation [diagram representation for illustrative purpose only]
Temperature
30 minutes
Outdoor fan
speed reduce
Shift
temperature
1 hour
Temperature
30 minutes
Outdoor fan
speed reduce
Shift
temperature
1 hour
ECO SLEEP TIMER OPERATION
Example:
ECO SLEEP TIMER and ON TIMER reservations are cancelled.
have comfort operation. shifted depends on type of air conditioner.
ƵTo cancel ECO SLEEP TIMER and ON TIMER operation
ƽIf ECO SLEEP TIMER is set when OFF TIMER or ON/OFF TIMER has been set earlier, the ECO
SLEEP TIMER becomes effective instead of the OFF TIMER or ON/OFF TIMER.
– 20 –
WEEKLY TIMER OPERATION
Ƶ
Press (WEEKLY) button. lights up. and blink on the
display. (Mode A is selected).
Press (WEEKLY) button again, and blink on the display.
(Mode B is selected).
ƽIf no reservation has been made, ON/OFF, , appear. ƽ If reservation has been made, ON/OFF, , will not
appear.
Press (WEEKLY) button for about 3 seconds. The selection mode
can be changed.
, day: Mon, program no. : 1, ON/OFF, setting time and setting
temperature blink on the display. Press (DAY) button.
The day changes from Mon Tue Wed Thu Fri Sat Sun
Mon, Tue, Wed, Thu, Fri, Sat, Sun [Full days] Mon, Tue, Wed, Thu,
Fri [weekday] Sat, Sun [weekend] Mon Tue ......
Select [Full days] for daily reservation. Select [weekday] for Monday to Friday reservation. Select [weekend] for Saturday and Sunday reservation.
ƽAfter reservation has been set, it is easy to check and edit at the same
time.
4. Press button to select a program number.
The number changes from 1 2 3 4 5 6 1 2 .....
ƽIf program number has been set, follow above in order to make
changes.
1 2
Step 1: Set the reservation schedule to the remote controller. Send the registered reservation to indoor
unit and then operate.
Step 2: Select Mode A or Mode B and activate or deactivate WEEKLY TIMER . Step 3: Copy and cancel the reservation schedule.
Step 1 : Set reservation schedule to the remote controller. Send the registered reservation
to indoor unit and then operate.
3 4
ƽIf calendar and clock are not set, the reservation setting for WEEKL ƽlt is possible to select Mode A or Mode B.For each mode ,up to 6 programs can be set per day. ln total, a
maximum of 42 programs can be set for a week for each mode.
Y TIMER cannot be set.
ƽIf calendar and clock are not set correctly, WEEKLY TIMER will not operate correctly. ƽReservation for calendar and clock shall be set rst before operating WEEKLY TIMER.fi
How to set a WEEKLY TIMER.
1. Select Mode A or Mode B.
2. Set a program.
3. Select the desired day of the wekk.
19

– 21 –
ENGLISH
5. Press (ON-OFF TIMER) button to select ON TIMER or OFF TIMER
reservation.
6. Press (TIME) button to set time reservation.
7. Press (TEMP or ) button to set temperature reservation.
8. Press (OK) button. The reservations are set. Day, program
number, ON reservation, setting temperature will light up. will be
continuously blinks. If reservation is not complete, settings will not be stored in memory.
To continue with the reservation, press buttons.
Follow step 3 to 8 for reservation. 9. After all the reservations have been set, press (SEND) button while
directing the remote controller towards the indoor unit for about 3 second
s
Timer lamp on the indoor unit will blink rapidly.
After beep sound emitted from indoor unit, TIMER lamp will light up.
Please ensure that the TIMER lamp lights up.
This indicates that the reservation has been stored in the indoor unit and
Timer function has been completed.
The reservation contents will appear on the remote controller display. If TIMER lamp on the indoor unit does not light up, press
(SEND) button while directing the remote controller towards the indoor
unit for about 3 seconds.
CAUTION ! Do not press (CANCEL) button during reservation
setting because this will result in all reservation contents to be lost.
The reservation contents will not stored in the indoor unit until
(SEND) button has been pressed.
5 6 7 8 9
NOTE
ƽUp to 6 programs can be set per day. Setting ON TIMER or OFF TIMER for each program number can
number will automatically arranged so that program number 1 shall have the earliest time and program number 6 shall have the latest time.
If the setting time is the same, Priority will be given to the latest reservation contents.
after reservations have been made , all current reservations will be lost.
WEEKLY TIMER OPERATION
ƽ ƽ ƽ
be at random. When pressing (SEND) button, the set ON TIMER or OFF TIMER for each program
ƽCAUTION ! If the remote controller is left idle and (SEND) button is not pressed within 3 minutes
– 22 –
ƵHow to select Mode A or Mode B of WEEKLY TIMER setting. 1. Press (WEEKLY) button. and blink on the display.
(Normally Mode A will blink first).
2. Press (WEEKLY) button again. and blink on the display.
3. Select Mode A or Mode B. Press (SEND) button while directing the
remote controller towards the indoor unit for about 3 seconds. Timer lamp
on the indoor unit will blink rapidly.
After beep sound emitted from indoor unit, TIMER lamp will light up.
Please ensure that the TIMER lamp lights up.
This indicates that Mode A or Mode B selection and active WEEKLY TIMER
have been confirmed.
ƵSetting non-active WEEKLY TIMER .
1. Direct the remote controller towards the indoor unit and press
(CANCEL) button.
Beep sound will be emitted from indoor unit and TIMER lamp will be OFF.
Reservation indication on remote display will also disappear.
This indicates that non-active WEEKLY TIMER has been confirmed.
ƽ
To activate back the setting of WEEKLY TIMER , repeat the steps for
"How to select Mode A or Mode B of WEEKLY TIMER setting".
NOTE
ƽ
When setting ONCE TIMER, operation of WEEKLY TIMER is interrupted. After ONCE TIMER operation is complete, WEEKLY TIMER operation will be activated.
ƽ
When ONCE TIMER is cancelled, operation of WEEKLY TIMER is also cancelled. Need to set WEEKLY TIMER operation for activation.
ƽ
After auto restart, WEEKLY TIMER operation is cancelled. Need to set WEEKLY TIMER operation for activation.
1 2
1
WEEKLY TIMER OPERATION
Step 2: Select Mode A or Mode B and activate or deactivate WEEKLY TIMER.
3
20