Hitachi RAK-18PSPA User manual

ENGLISH
– 1 –
SPLIT TYPE AIR CONDITIONER
INDOOR UNIT/OUTDOOR UNIT
MODEL
RAK-18PSPA/RAC-18WSPA
RAK-35PSPA/RAC-35WSPA
RAK-25PSPA/RAC-25WSPA
OUTDOOR UNIT INDOOR UNIT
REMOTE CONTROLLER
RAK-18PSPA
RAK-25PSPA
RAK-35PSPA
RAC-18WSPA
RAC-25WSPA
RAC-35WSPA
Instruction manual Page 1~10
To obtain the best performance and ensure years of
trouble free use, please read this instruction manual
completely.

– 2 –
SAFETY PRECAUTION
 EaZVhZgZVYi]Z¸HV[ZinEgZXVji^dc¹XVgZ[jaanWZ[dgZdeZgVi^c\i]Zjc^iidZchjgZXdggZXijhV\Zd[
the unit.
 EVnheZX^VaViiZci^dcidh^\chd[¸ Warning¹VcY¸ Caution¹#I]Z¸LVgc^c\¹hZXi^dcXdciV^ch
bViiZghl]^X]!^[cdidWhZgkZYhig^Xian!bVnXVjhZYZVi]dghZg^djh^c_jgn#I]Z¸8Vji^dc¹hZXi^dc
contains matters which may result in serious consequences if not observed properly. Please
observe all instructions strictly to ensure safety.
 I]Zh^\ch^cY^XViZi]Z[daadl^c\bZVc^c\h#I]Z[daadl^c\VgZZmVbeaZhd[h^\ch#
Make sure to connect earth line. This sign in the figure indicates prohibition
Indicates the instructions that must be followed.
 EaZVhZ`ZZei]^hbVcjVaV[iZggZVY^c\#
PRECAUTIONS DURING INSTALLATION
WARNING
 9dcdigZXdchigjXii]Zjc^i#
LViZgaZV`V\Z![Vjai!h]dgiX^gXj^idgÃgZbVndXXjg^[ndjgZXdchigjXii]Zjc^i
by yourself. PROHIBITION
 EaZVhZVh`ndjghVaZhV\ZcidgfjVa^ÃZYiZX]c^X^Vc[dgi]Z^chiVaaVi^dcd[ndjgjc^i#
LViZgaZV`V\Z!h]dgiX^gXj^idgÃgZbVndXXjg^[ndj^chiVaai]Zjc^iWnndjghZa[#
 EaZVhZjhZZVgi]a^cZ#
9dcdieaVXZi]ZZVgi]a^cZcZVglViZgdg\Vhe^eZh!a^\]ic^c\"XdcYjXidg!dg
the earth line of telephone. Improper installation of earth line may cause
electric shock. CONNECT EARTH LINE
 7ZhjgZidjhZi]ZheZX^ÃZYe^e^c\hZi[dgG)&%6#Di]Zgl^hZ!i]^hbVngZhjai
in broken copper pipes or faults.
CAUTION
 6X^gXj^iWgZV`Zgh]djaYWZ^chiVaaZYYZeZcY^c\dci]Zbdjci^c\h^iZd[i]Z
jc^i#L^i]djiVX^gXj^iWgZV`Zg!i]ZYVc\Zgd[ZaZXig^Xh]dX`Zm^hih#
PROHIBITION
 9dcdi^chiVaai]Zjc^icZVgVadXVi^dcl]ZgZi]ZgZ^hÄVbbVWaZ\Vh#
I]ZdjiYddgjc^ibVnXViX]ÃgZ^[ÄVbbVWaZ\VhaZV`hVgdjcY^i#E^e^c\h]Vaa
WZhj^iVWaZhjeedgiZYl^i]VbVm^bjbheVX^c\d[&bWZilZZci]Zhjeedgih#
 EaZVhZZchjgZhbddi][adld[lViZgl]Zc^chiVaa^c\i]ZYgV^c]dhZ#>[Vcn
failure is found in the drain path, water drops from the indoor and outdoor
units, causing wet household effects.
 BV`ZhjgZi]ViVh^c\aZe]VhZ'(%KedlZghdjgXZ^hjhZY#
The use of other power sources may cause electrical components to overheat
and lead to fire. PROHIBITION
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
WARNING
 H]djaYVWcdgbVah^ijVi^dcVg^hZa^`ZWjgc^c\hbZaa!eaZVhZhidedeZgVi^c\
the unit and remove plug from the socket or turn off the circuit breaker.
8dciVXindjgV\Zci#;Vjai!h]dgiX^gXj^idgÃgZbVndXXjg^[ndjXdci^cjZid
operate the unit under abnormal situation. “OFF”
 EaZVhZXdciVXindjgV\Zci[dgbV^ciZcVcXZ#
Improper self maintenance may cause electric shock and fire.
 EaZVhZXdciVXindjgV\Zci^[ndjcZZYidgZbdkZVcYgZ^chiVaai]Zjc^i#
Electric shock or fire may occur if you remove and reinstall the unit yourself improperly.
 6kd^YVcZmiZcYZYeZg^dYd[Y^gZXiV^gÄdl[dgndjg]ZVai]#
PROHIBITION
 9dcdiXdccZXii]ZedlZgXVaWZl^i]VcZmiZch^dcXVWaZdgYdcdieaj\idd
many leads of the other electric appliance into the socket where this cable
is plugged. In addition, wire the cable with some allowances to prevent
the cable from stretching. Not doing so will cause an electrical shock, heat
generation or fire. PROHIBITION
 9dcdiWjcYaZi]ZedlZgXVWaZ!ejaa^i!ejihdbZi]^c\dc^i!]ZVi^i!egdXZhh
^i!dgeji^iWZilZZci]^c\h#7gZV`V\Zd[i]ZedlZgXVWaZbVngZhjai#JhZd[V
damaged cable may cause an electrical shock or a fire. PROHIBITION
PROHIBITION
 9dcdiejidW_ZXiha^`Zi]^cgdYh^cidi]ZeVcZa d[WadlZgVcYhjXi^dch^YZ
WZXVjhZi]Z]^\]"heZZY[Vc^ch^YZbVnXVjhZYVc\Zg#

ENGLISH
– 3 –
PRECAUTIONS DURING OPERATION
WARNING
 9dcdijhZVcnXdcYjXidgVh[jhZl^gZ!i]^hXdjaYXVjhZ[ViVaVXX^YZci#
PROHIBITION
“OFF”
 9jg^c\i]jcYZghidgb!Y^hXdccZXii]Zeaj\idedgijgcd[[i]Z
circuit breaker.
 HegVnXVchVcYdi]ZgXdbWjhi^WaZhh]djaYcdiWZadXViZYl^i]^cVbZiZgd[
the air outlets of both indoor and outdoor units.
6hVhegVnXVc»h^ciZgcVaegZhhjgZXVcWZ^cXgZVhZYWn]diV^g!VgjeijgZbVn
result. PROHIBITION
CAUTION
 I]ZegdYjXih]VaaWZdeZgViZYjcYZgi]ZbVcj[VXijgZgheZX^ÃXVi^dcVcYcdi
for any other intended use. PROHIBITION
DON’T WET
 9dcdiViiZbeiiddeZgViZi]Zjc^il^i]lZi]VcYh!i]^hXdjaYXVjhZ[ViVa
accident.
 L]ZcdeZgVi^c\i]Zjc^il^i]Wjgc^c\Zfj^ebZcih!gZ\jaVgan
kZci^aViZi]ZgddbidVkd^Ydmn\Zc^chj[ÃX^ZcXn# STRICTLY OBSERVE
PRECAUTIONS
PROHIBITION
 9dcdiY^gZXii]ZXddaV^gXdb^c\dji[gdbi]ZV^g"XdcY^i^dcZg
panel to face household heating apparatus as this may affect
the working of apparatus such as the electric kettle, oven etc.
 EaZVhZZchjgZi]VidjiYddgbdjci^c\[gVbZ^hValVnhhiVWaZ!
firm and without defect. If not, the outdoor unit may collapse
and cause danger. PROHIBITION
PROHIBITION
 9dcdilVh]i]Zjc^il^i]lViZgdgeaVXZVlViZgXdciV^cZg
such as a vase on the indoor unit.
Electrical leakage could be present and cause electric shock.
 9dcdieaVXZeaVcihdgVc^bVahY^gZXianjcYZgi]ZV^gÄdlVh^i^hWVY[dgi]Z
plants or animals. PROHIBITION
PROHIBITION
 9dcdiXa^bWdci]ZdjiYddgjc^idgejidW_ZXihdc^i#
 L]ZcdeZgVi^c\i]Zjc^il^i]i]ZYddgVcYl^cYdlhdeZcZY!i]Zgddb
]jb^Y^in^hValVnhVWdkZ-%VcYl^i]i]ZV^gYZ[aZXidg[VX^c\Ydlcdg
moving automatically for a long period of time, water will condense on the air
YZÄZXidgVcYYg^ehYdlcdXXVh^dcVaan#I]^hl^aalZindjg[jgc^ijgZ#I]ZgZ[dgZ!
do not operate under such condition for a long time.
PROHIBITION
PROHIBITION
 >[i]ZVbdjcid[]ZVi^ci]Zgddb^hVWdkZi]ZXdda^c\dg]ZVi^c\XVeVW^a^in
d[i]Zjc^i[dgZmVbeaZ/bdgZeZdeaZZciZg^c\i]Zgddb!jh^c\]ZVi^c\
Zfj^ebZcihVcYZiX#!i]ZegZhZigddbiZbeZgVijgZXVccdiWZVX]^ZkZY#
 I]^hVeea^VcXZZheZX^Vaan^cYddgjc^iXaZVc^c\bjhiWZeZg[dgbZYWn
Vji]dg^oZYeZghdccZadcan#8dchjaindjghVaZhV\Zci#
Jh^c\VXdbbZgX^VaanVkV^aVWaZYZiZg\Zcidgh^b^aVgXVcYVbV\Zi]ZeaVhi^X
parts or clog the drain pipe, causing water to drip with potential electric shock
hazard.
PROHIBITION
DON’T TOUCH
 9dcdiidjX]i]ZV^gdjiaZi!Wdiidbhjg[VXZVcYVajb^cjb[^cd[i]Z
outdoor unit.
You may get hurt.
 9dcdiidjX]i]ZgZ[g^\ZgVcie^eZVcYXdccZXi^c\kVakZ#
7jgchbVngZhjai#
DON’T TOUCH
 I]^hVeea^VcXZ^hcdi^ciZcYZY[dgjhZWnndjc\X]^aYgZcdg^c[^gbeZghdchjcaZhhi]Zn
have been adequately supervised by a responsible person to ensure that they can use this
appliance safely.
 Ndjc\X]^aYgZch]djaYWZhjeZgk^hZYidZchjgZi]Vii]ZnYdcdieaVnl^i]i]ZVeea^VcXZ#

– ) –
NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT
OUTDOOR UNIT
Air filter
To prevent dust from coming into the indoor unit.
GZ[ZgeV\Z+
Front panel
GZ[ZgeV\Z,
Indoor unit indicators
Light indicator showing the operating condition.
GZ[ZgeV\Z*
Remote controller
HZcYdjideZgVi^dch^\cVaidi]Z^cYddgjc^i#
HdVhiddeZgViZi]Zl]daZjc^i#
Air outlet
L]Zc¸]ZVi^c\¹deZgVi^dc
is performed, cool air blows
VcYl]Zc¸Xdda^c\¹dg
¸YZ]jb^Y^[n^c\¹deZgVi^dc^h
performed, warm air blows.
Drain port
(Bottom) Earth terminal
(Lower section of the side)
Drain hose
9gV^chi]ZYZ]jb^Y^[^ZYlViZg[gdbi]Z
^cYddgjc^iidi]ZdjiYddgYjg^c\¸Xdda^c\¹dg
¸YZ]jb^Y^[n^c\¹deZgVi^dc#
Piping and Wiring
Air inlets (Rear and left sides)
Horizontal deflector Vertical deflector
(Air Outlet)
RAC-18WSPA
RAC-25WSPA
RAC-35WSPA
About the outdoor unit:
L]Zc¸Hide¹^hhZaZXiZYYjg^c\
operation of the indoor unit, the fan of
the outdoor unit continues turning for 10
id+%hZXdcYhidXddai]ZZaZXig^XeVgih
down.
 >c]ZVi^c\deZgVi^dc!XdcYZchViZdg
lViZgYjZidYZ[gdhi^c\l^aaÄdl#
9dcdiXdkZgi]ZYgV^cedgid[i]Z
outdoor unit because such water may
freeze in the chilly area.
MODEL NAME AND DIMENSIONS
BD9:A L>9I=bb =:><=Ibb 9:EI=bb
G6@"&-EHE6!G6@"'*EHE6!G6@"(*EHE6 ,-% 280 218
G68"&-LHE6!G68"'*LHE6!G68"(*LHE6 ,.' +%% '..

ENGLISH
– 5 –
NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT INDICATIONS
TIMER LAMP (Orange)
This lamp lights when the
timer is working.
OPERATION LAMP (Yellow)
This lamp lights during operation.
I]ZDE:G6I>DCA6BEÄVh]Zh
in the following cases during
heating.
(1) During preheating
;dgVWdji'"(b^cjiZhV[iZg
starting up.
(2) During defrosting
9Z[gdhi^c\l^aaWZeZg[dgbZY
about once an hour when
frost forms on the heat
ZmX]Vc\Zgd[i]ZdjiYddg
jc^i![dg*"&%b^cjiZhZVX]
time.
TEMPORARY SWITCH
 JhZi]^hhl^iX]idhiVgiVcYhidel]Zci]Z
remote controller does not work.
This temporary operation will be at the most
gZXZcihZii^c\bVYZ#I]Zjc^il^aa^bbZY^ViZan
go into automatic operation once power is
hl^iX]ZYdc#
TEMPORARY
SWITCH
CAUTION
Turn off the circuit breaker or pull out
the power plug if the unit is not be
operated for a long period.
ƿIf the power stays on and the unit is not operated, power is slightly consumed in the control circuit.
I]ZedlZg^hhVkZYWnijgc^c\d[[i]ZedlZghl^iX]dgi]ZX^gXj^iWgZV`Zgl]Zci]ZedlZg^h
hjeea^ZY[gdbi]ZdjiYddgjc^i#

– 2–
Remote controller holder
Screws
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.
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. Remote controller
NOTE
Notes on batteries
z When replacing the batteries, use batteries of the same
type, and replace both old batteries together.
z When the system is not used for a long time, take the
batteries out.
z 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).
z 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
z Never expose the remote controller to direct sunlight.
z Dust on the signal transmitter or receiver will reduce the
sensitivity. Wipe off dust with soft cloth.
z 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.
z If the remote controller signals happen to operate another
appliance, move that appliance to somewhere else, or
consult the service shop.
z When the remote controller is not in use, please close the
slide cover to prevent failure.
To install the batteries
To fix the remote controller holder to the wall

ENGLISH
– 3 –
PREPARATION BEFORE OPERATION
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.
 Calendar and clock will not be transmitted from indoor
unit when the following occurs:
z When there is a power failure.
z When breaker is OFF by user (unit is not in STANDBY
MODE).
NOTE
Note on setting the calendar and clock.
z If the calendar and clock are not set, the ON-timer, OFF-timer and Weekly Timer cannot be set.
z If the calendar and clock are not set correctly, the ON-timer, OFF-timer and Weekly Timer will not operate
correctly.
z When 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.
To set calendar and clock

– 4–
REMOTE CONTROLLER
z 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 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.
z Handle the remote controller with care. Dropping it or getting it wet may compromise its signal transmission
capability.
z After new batteries are inserted into the remote controller, the unit will initially require approximately 10
seconds to respond to commands and operate.
z When remote controller is not in use for about 3 minutes during OFF condition, indicated by on the
display, the LCD will turn off.
z During clock setting, the LCD will turn off about 10 minutes later if the remote controller is not in use.
z When pressing any button, the LCD will turn on.
z The LCD will not turn off during TIMER setting.
NAMES AND FUNCTIONS OF REMOTE CONTROLLER
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
This indicate the room themperature
selected, current time, timer status,
function and airflow rate selected.
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.
Transmission sign
The transmission sign lights up
when a signal is sent.
START/STOP button
Press this button to start
operation. Press it again to stop
operation.
FAN SPEED selector Button
This determines the fan speed.
Every time you press this button
the airflow rate will change from
(AUTO)

(HIGH)

(MED)

(LOW)

(SILENT) (This button allows
selection of optimal or preferred
fan speed for each operation
mode).
ECO Button
Use this button to set the ECO
mode.(fp.14)

ENGLISH
– 5 –
NAMES AND FUNCTIONS OF REMOTE CONTROLLER
Precautions for Use
z Do not put the remote controller in the following places.
z Under direct sunlight.
z In the vicinity of a heater.
z Handle the remote controller carefully. Do not drop it on the floor, and protect it from water.
z 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.
z 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.(fp.12)
INFORMATION Button
(fp.26)
ONE TOUCH CLEAN Button
(fp.16)
LEAVE HOME Button
(fp.15)
SLEEP TIMER Button
Use this button to set the sleep
timer. (fp.18)
ON / OFF TIMER setting Buttons
(fp.17)
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.(fp.13)
AUTO SWING (Vertical) Button
Controls the angle of the
horizontal air deflector.(fp.11)
WEEKLY TIMER setting Buttons
(fp.20)
MODE SELECTOR
AUTO
HEAT
DEHUMIDIFY
COOL
FAN
FAN SPEED
AUTO
SILENT
LOW
MED
HI
START / STOP
ECO
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

– 6–
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.
 Auto Restart Control
z If 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.)
z If 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.
VARIOUS FUNCTIONS
AUTOMATIC OPERATION
1
3
2(AUTO) (HIGH) (MED)
(LOW)
(SILENT)
START
STOP
Press the MODE selector button so that the display indicates the
(AUTO) mode of operation.
z 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.
z If the mode automatically selected by the unit is not satisfactory,
manually change the mode setting (HEAT, DEHUMIDIFY, COOL
or FAN).
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.
Operation starts with a beep.
Press the button again to stop operation.
 As the settings are stored in the memory of the remote controller, you
only have to press the (START/STOP) button next time.
Press the (FAN SPEED) button to select AUTO, HI, MED, LOW or
SILENT.