Hitachi 0169E Service Manual

SERVICE MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY

RAS-18CP5
RAS-24CP5

PM

NO. 0169E

RAS-18CP5/RAC-18CP5
RAS-24CP5/RAC-24CP5

REFER TO THE FOUNDATION MANUAL

CONTENTS

SPECIFICATIONS ----------------------------------------------------- 5
HOW TO USE ---------------------------------------------------------- 8
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 30
MAIN PARTS COMPONENT ------------------------------------- 32
WIRING DIAGRAM -------------------------------------------------- 34
CIRCUIT DIAGRAM ------------------------------------------------- 37
PRINTED WIRING BOARD LOCATION DIAGRAM ------- 39
BLOCK DIAGRAM --------------------------------------------------- 41
BASIC MODE --------------------------------------------------------- 43
REFRIGERATING CYCLE DIAGRAM ------------------------- 49
DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 50
AUTO SWING FUNCTION ---------------------------------------- 54
SERVICE CALL Q & A -------------------------------------------- 55
TROUBLE SHOOTING --------------------------------------------- 60
PARTS LIST AND DIAGRAM ------------------------------------ 63

RAC-18CP5
RAC-24CP5

SPECIFICATIONS

TYPE

MODEL
POWER SOURCE

TOTAL INPUT

COOLING

DIMENSIONS
(mm)

NET WEIGHT

TOTAL AMPERES

CAPACITY

(W)

(A)

(kW)

(B.T.U./h)

W

H
D

(kg)

INDOOR UNIT OUTDOOR UNITINDOOR UNITOUTDOOR UNIT

RAS-18CP5 RAC-18CP5

1 Ø, 50 Hz, 220 ~ 240V

1790 ~ 1950

8.30 ~ 8.50

5.10 ~ 5.20

17,410 ~ 17,750

1030

295
183

12

(WALL TYPE)

750
570

280

43

RAS-24CP5 RAC-24CP5

1 Ø, 50 Hz, 220 ~ 240V

1030

295
183

12

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

2270 ~ 2410

10.90 ~ 10.60

6.30 ~ 6.30

21,500 ~ 21,500

850
650

298

60

After installation

ROOM AIR CONDITIONER

FEBRUARY 2003

INDOOR UNIT + OUTDOOR UNIT

Refrigeration & Air-Conditioning

SAFETY DURING REPAIR WORK

DANGER

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.

First, I must disconnect
the power cord plug

from the power outlet.

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.

– 1 –

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).

A conductive polyvinyl bag

IC

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.

IC

Conductive sponge

Body earth
(Elimik conductive band)

1M

Fig. 2. Body Earth

Clip for connection with a
grounding wire

– 2 –

(6) Use a three wire type soldering iron including a grounding wire.

Metal plate (of aluminium, stainless steel, etc.)

Staple

Bare copper wire (for body earth)

Fig. 3. Grounding of the working table

Working
table

Resistor of 1 M (1/2W)

Earth wire

Soldering iron

2

Screw stop at the screwed
part using a rag plate

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.

Grounding
wire

– 3 –

CAUTION

!

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 near by, it is recommended to stop the operation and to disconnect the power cord plug
from the power outlet for safety.

3. The room air conditioner does not start automatically after recovery of the electric power failure for
preventing fuse blowing. Re-press START/STOP button after 3 minutes from when unit stopped.

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).

– 4 –

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

RAS-18CP5

20 W

NO

NO

–

NO

NO

NO

3.15A

G4A

YES

RAC-18CP5

30 W

2.5µF, 450V

YES (INTERNAL)

SHY33MC4-E

50µF, 440VAC

(INTERNAL)

(INTERNAL)

NO

NO

NO

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

FUSE CAPACITY

UNIT

REFRIGERANT CHARGING
VOLUME
(Refrigerant R22)

PIPES (MAX. 15m)

PIPES (MIN. 15m)

NO

YES

YES (SWITCHING
POWER SUPPLY)

450NR

NO

YES(IC)

YES

20 A TIME DELAY FUSE

---------- 1250g

ADDITIONAL REFRIGERANT R22 AT
10g PER EVERY METER IF PIPE
LENGTH MORE THAN 8m.

NO

YES

NO

NO

NO

YES(IC)

NO

– 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

RAS-24CP5

20 W

NO

NO

–

NO

NO

NO

3.15A

G4A

YES

RAC-24CP5

40 W

2.5µF, 450V

YES (INTERNAL)

SHV33YC1-E

60µF, 440VAC

(INTERNAL)

(INTERNAL)

NO

NO

NO

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

FUSE CAPACITY

REFRIGERANT CHARGING
VOLUME
(Refrigerant R22)

PIPES (MAX. 15m)

PIPES (MIN. 15m)

NO

YES

YES (SWITCHING
POWER SUPPLY)

450NR

NO

YES(IC)

YES

30 A TIME DELAY FUSE

---------- 1600gUNIT

ADDITIONAL REFRIGERANT R22 AT
20g PER EVERY METER IF PIPE
LENGTH MORE THAN 8m.

NO

YES

NO

NO

NO

YES(IC)

NO

– 6 –

Figure showing the installation of Indoor and Outdoor unit

!

CAUTION

The installation height of indoor unit must be 2.5m or more from floor in a non public area

above 50mm

above 100mm

above 100mm

above

0.45m

2,500mm or more

above 300mm

must not bend

above 100mm

above 700mm

above 200mm

above 50mm when
installed on the

(

ceiling of balcony

Maximum pipe length 15m

Minimum pipe length 5m

)

Plug

above 100mm

give clearance as
wide as possible

above 200mm

The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).

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).

The connection of insulated
drain hose.

inner diameter ø 16mm

Please use insulated drain
hose for the indoor piping
(commercial product).

– 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.

Indicates the instructions that must be followed.

●

Please keep this manual after reading.

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

!

WARNING

!

CAUTION

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.

The sign in the figure indicates prohibition.

W

A
R
N

N
G

!

W

A
R
N

N

G

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

●

Should abnormal situation arises (like burning smell), please stop operating the unit

!

I

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.

PRECAUTIONS DURING OPERATION

●

Avoid an extended period of direct air flow for your health.

●

Do not put objects like thin rods into the panel of blower and suction side
because the high-speed fan inside may cause danger.

●

I

Do not use any conductor as fuse wire, this could cause fatal accident.

●

During thunder storm, disconnect and turn off the circuit breaker.

– 8 –

PRECAUTIONS DURING OPERATION

● The product shall be operated under the manufacturer specification and not

for any other intended use.

●

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.

● 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.

● Do not use any aerosol or hair sprays near the indoor unit. This chemical can

!

C
A

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.

U

T

I

● Please switch off the unit and turn off the circuit breaker during cleaning, the

high-speed fan inside the unit may cause danger.

O

N

● Turn off the circuit breaker if the unit is not to be operated for a long period.

● Do not climb on the outdoor unit or put objects on it.

●

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.

●

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.

– 9 –

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
(Air Outlet)

(Refer page 17)

●

Vertical deflector

OUTDOOR UNIT

Remote controller

Send out operation signal to the indoor unit. So as
to operate the whole unit.
(Refer page 12)

Drain pipe

Condensed water drain to outside.

Connecting cord and insulation pipe for piping

Air inlet (Back and Left side)

Air outlet

In relation to outdoor unit

• Even if operation stops, fan is running
for 10 to 60 seconds to reduce heat

of electric components.

MODEL NAME AND DIMENSIONS

MODEL

RAS-18CP5 / RAS-24CP5

RAC-24CP5
RAC-18CP5

WIDTH (mm)

1030

850
750

– 10 –

HEIGHT (mm)

295
650
570

DEPTH (mm)

183
298
280

INDOOR UNIT INDICATORS

HITACHI

OPERATION INDICATOR

OPERATION LAMP

This lamp lights during operation.

TIMER LAMP

This lamp lights when the timer is working.

FILTER LAMP

When the device is operated for a total of about 100
hours, the FILTER lamp lights to indicate that it is time
to clean the filter. The lamp goes out when the power
switch set to OFF and ON again.

● This figure shows the opening condition of

front panel. Refer to page 25 in relation to
how to open or close the front panel.

AUTO
RESTART
SWITCH

AUTO

RESTART

SWITCH

AUTO RESTART SWITCH

● 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 timer will be reset and the unit will begin or stop

operating under a new timer setting.

– 11 –

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.

●

Signal emitting window/transmission sign

CH

˚

CH

˚

RESET

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

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.

– 12 –

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.

Press the FUNCTION selector so that the display indicates
the (AUTO) mode of operation.

1

● 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.

RESET

START

STOP

■ As the settings are stored in memory in the remote controller, you

Press the
Operation starts with a beep.
Press the button again to stop operation.

only have to press the

You can raise or lower the temperature setting as necessary by
maximum of 3°C.

°C

● 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.

(START/STOP) button.

(START/STOP) button next time.

Press the temperature button and the
temperature setting will change by 1°C each
time.

■ CONDITION OF AUTOMATIC OPERATION

● The selected mode of operation will not change during the operation even though the room temperature

change.

INITIAL ROOM

TEMPERATURE (APPROX.)

Over 27°C COOL

16~27°C

FUNCTION

-

-

DEHUMIDIFY

– 13 –

TEMPERATURE

SETTING

27°C

Slightly lower than the
room temperature

FAN SPEED

HIGH at start, LOW after
the preset temperature is
reached.

LOW

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

C

˚

1

(COOL).

RESET

Set the desired FAN SPEED with the
(the display indicates the setting).

(AUTO): The FAN SPEED is HI at first and varies to

MED automatically when the preset temperature

2

(HI) : Economical as the room will become cool

(MED) : Quiet.
(LOW) : More quiet.

Set the desired room temperature with the TEMPERATURE
button (the display indicates the setting).

C

˚

3

START

STOP

The temperature setting and the actual room temperature may
vary some how depending on conditions.

Press the
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.

has been reached.

quickly.

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.

(START/STOP) button. Cooling operation starts

(FAN SPEED) button

■ As the settings are stored in memory in the remote controller, you

only have to press the

– 14 –

(START/STOP) button next time.

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.

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.

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.

RESET

C

˚

1

2

START

STOP

■ As the settings are stored in memory in the remote controller,

C

˚

Press the (START/STOP) button. Dehumidifying operation
starts with a beep. Press the button again to stop operation.

you only have to press the

(START/STOP) button next time.

■ 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.

– 15 –

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

1

indicates

(FAN).

RESET

CIRCULATION OPERATION

C

˚

2

START

STOP

1
2

Press the

Press the
with a beep. Press the button again to stop 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).

(FAN SPEED) button.

(START/STOP) button. Fan operation starts

RESET

Press the temperature control button to set to the desired

3

START

STOP

C

˚

temperature.

Press the
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
time.

(START/STOP) button. Circulating operation

(START/STOP) button next

– 16 –

ADJUSTING THE AIR DEFLECTOR

1

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.

● 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.

RESET

2

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 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.

When cooling
dehumidifying

– 17 –

HOW TO SET THE TIMER

RESET

Time, Day, Month

TIME, DAY,
MONTH

After you change the
batteries;

(current time,
day, month)

OFF TIMER

ON TIMER

OFF-Timer

RESERVE
CANCEL

Start

You can set the device to turn off
at the present time.

ON-Timer

● The device will turn on at

the designated times.

M D

STOP

Stop

1

Set the current month and

day with the TIMER control
button.

M D

1

Press the (OFF-TIMER)

button. The (OFF) mark blinks
on the display.

1

Start

Press the (ON-TIMER)

button the (ON) mark blinks
on the display.

AM

AM

1

ON/OFF-Timer

Start Stop

● 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.

Press the (ON-OFF)

button so that the (OFF)
mark blinks.

PM

2

Set the turn-off time

with the TIMER control
button.
Press the (RESERVE)
button.

PM

3

Press the (ON-

TIMER) button so that the
(OFF) mark lights and
the (ON) mark blinks.

PM

AM

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.

NOTE

You can set only one of the OFF-timer,
ON-timer and ON/OFF-timer.

– 18 –

2

Press the

(TIME) button.

AM
PM PM

2

Set the turn-off time with the

TIMER control button.

3

TIMER control button.

PM

Set the current time with the

Example: The current time is 1:30 p.m.

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.

4

Press the (TIME) button again.

The time indication starts lighting
instead of flashing.

● The time indication will disappear

PM

● To check the current time setting,

automatically in 10 seconds.

press the (TIME) button twice.
The setting of the current time is

now complete.

2

Set the turn-on time with the

TIMER control button.

AM

4

Set the turn-on time with the

TIMER control button.

PM

AM

PM

The setting of turn-off time is now complete.

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.

Example:

AM

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.

PM

AM

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.

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.

Example: The device will turn off at 11:00p.m.

● 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.

– 19 –

HOW TO SET THE SLEEP TIMER

Set the current time first if it is not set before (see the pages for setting the
current time). Press the (SLEEP) button, and the display changes as
shown below.

Mode

44 44

H

SLEEP

Sleep timer

Sleep Timer: The device will continue working for the designated
number of hours and then turn off.
Point the signal window of the remote controller toward the indoor
unit, and press the SLEEP button.
The timer information will be displayed on the remote controller. The
TIMER lamp lights with a beep from the indoor unit. When the sleep
timer has been set, the display indicates the turn-off time.

H

Sleep

timer

1

Set the ON-timer.

Start

1 hour 2 hours 3 hours 7 hours

The device will be turned off by the sleep
timer and turned on by on-timer.

Indication

Sleep timer off

Example: If you set 3 hours sleep
time at 11:38 p.m., the turn-off
time is 2:38 a.m.

1

2

Press the (SLEEP) button and set the sleep timer.

AM

H

AM

For heating:

In this case, the device will turn off
in 2 hours (at 1:38 a.m.) and starts
at 6:00 a.m. next morning.

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.

– 20 –

Explanation of the sleep timer

The device will control the FAN SPEED and room temperature automatically so as to be quiet and
good for people’s health.
You can set the sleep timer to turn off after 1, 2, 3 or 7 hours. The FAN SPEED and room
temperature will be controlled as shown below.

Operation with the sleep timer

Function Operation

Cooling

“ ”

controlled 2°C above the
temperature and the FAN
SPEED will be set to LOW

The room temperature will be

and

dehumidifying

“ ”

setting 1 hour after the setting
of the sleep timer.

Sleep
timer set

2 hours
later

1 hour

6 hours
later

7 hours later

3 hours later

Fan

The settings of room temperature and circulation are varied.

“ ”

NOTE

● If date or current time is not set, sleep timer can not be set.

● If you set the sleep timer after the off-, on/off- or off/on-timer has been set, the sleep timer

becomes effective instead of the off-, on/off- or off/on-timer set.

● You can not set other timer during sleep timer operation.

● The angle of horizontal air deflector shifts up automatically after three hours on sleep timer

operation.

● Fan will stop for a while if room temperature reaches setting temperature.

– 21 –

HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER

Remove the cover as shown in the figure and take out the

1

old batteries.

=

Install the new batteries.

2

The direction of the batteries should match the marks in the
case.

!

CAUTION

1. Do not use new and old batteries, or different kinds of batteries
together.

2. Take out the batteries when you do not use the remote controller
for 2 or 3 months.

Push and pull to the
direction of arrow

– 22 –

THE IDEAL WAYS OF OPERATION

Suitable Room Temperature Install curtain or blinds

!

Warning

Freezing temperature
is bad for health and a
waste of electric power.

Ventilation Effective Usage Of Timer

It is possible to
reduce heat
entering the
room through
windows.

!

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.

Do Not Forget To Clean The Air Filter

Dusty air filter will reduce the air volume and
the cooling efficiency. To prevent from wasting
electric energy, please clean the filter every 2
weeks.

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.

Please Adjust Suitable Temperature

For Baby And Children

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.

– 23 –

FOR USER’S INFORMATION

The Air Conditioner And The Heat Source In The Room

!

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.

Not Operating For A Long Time

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 8W in the operation
control circuit even if it is in “OFF” mode.

OFF

When Lightning Occurs

!

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.

To prevent
interference,
place at least
1m away.

Inverter-type
fluorescent
lamp.

TV

– 24 –

ATTACHING THE AIR CLEANSING AND DEODORIZING FILTERS

!

CAUTION

Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,
stop operation and switch off the power supply.

1

2

3

Open the front panel.

● Pull up the front panel by holding it at both sides

with both hands.

Remove the filter.

● Push upward to release the claws and pull out the

filter.

Attaching the air cleansing and deodorizing filters
to the filter.

● Attach the air cleansing and deodorizing filters to

the frame by gently compress its both sides and
release after insertion into filter frame.

Claws

(4 places)

!

CAUTION

Do not bend the air cleansing
and deodorizing filter as it may
cause damage to the structure.

4

Attach the filters.

● Attach the filters by ensuring that the surface written

“FRONT” is facing front.

● After attaching the filters, push the front panel at

three arrow portion as shown in figure and close it.

NOTE

● In case of removing the air cleansing and deodorizing filters, please follow the above procedures.

● The cooling capacity is slightly weakened and the cooling speed becomes slower when the air cleansing

and deodorizing filters are used. So, set the fan speed to "HIGH" when using it in this condition.

● Air cleansing and deodorizing filters are washable and reusable up to 20 times by using vacuum cleaner

or water rinse under running tap water. Type number for this air cleansing filter is <SPX-CFH5>. Please
use this number for ordering when you want to renew it.

● Do not operate the air conditioner without filter. Dust may enter the air conditioner and fault may occur.

– 25 –

MAINTENANCE

!

CAUTION

Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,
stop operation and switch off the power supply.

1. AIR FILTER

Clean the air filter, as it removes dust inside the room. In case the air 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
filter following the procedure below.

PROCEDURE

1

2

3

Open the front panel and remove the filter

● Gently lift and remove the air cleansing and

deodorizing filter from the air filter frame.

Vacuum dust from the air filter and air cleansing
and deodorizing 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 cleansing and deodorizing

filter to the filter frame. Set the filter with
“FRONT” mark facing front, and slot them into
the original state.

● After attaching the filters, push the front panel

at three arrow portions as shown in figure
and close it.

NOTE:

● Air cleansing and deodorizing filter 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 3-6 months depending on application requirements.

!

CAUTION

● Do not wash with hot water at more than 40°C. The 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 filter may shrink.

● Do not use detergent on the air cleansing and deodorizing filter as some detergent may deteriorate

the filter electrostatic performance.

– 26 –

2. Washable Front Panel

● 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.

Removing the Front Panel

Arm

● 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

● Move the projections of the left and right

arms into the Flanges in the unit and
securely insert them into the holes.

Attaching the Front Panel

slightly, put it out forward.

!

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.

Projection

Hole

Flange

– 27 –

!

CAUTION

Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning,
stop operation and switch off the power supply.

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.

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER
EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.

1

2

3

Confirm

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).

– 28 –

AFTER SALE SERVICE AND WARRANTY

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.

CONDITION CHECK THE FOLLOWING POINTS

● Is the fuse all right?

When it does not operate

When it does not cool well
When it does not hot well

● Is the voltage extremely high or low?

● Is the circuit breaker “ON”?

● Was the air filter cleaned?

● 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?

Notes

● In quiet operation or stopping the 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 air 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.

Please note:
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.

NOTE:

If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service
parts centers.

– 29 –

CONSTRUCTION AND DIMENSIONAL DIAGRAM

MODEL RAS-18CP5/RAS-24CP5

183

Top air suction grille

Front cover

295

About

380

350

About

View from back

(Pipe lead-out)

6.5 60

47

47

31 120.5

60 60

263 317450

158

Drain outlet

Horizontal deflectorDischarge grille

Drain hose

Hole on the wall
for ø 65mm pipe

Power cord
Connecting cable

P

47

Drain

Narrow pipe

Wide pipe

Vertical deflector

7070

Drain cap
connection port

147

56 17.5

28

47

When piping is
drawn horizontally,
exchange the drain
hose for the drain cap

6.5 60

Note:

1. Servicing space of 100mm or more is required on the left and right sides of the indoor unit and also 50mm or
more space is required above the unit

2. Insulated pipes should be used for both the narrow and wide dia. pipes.

3. Piping length is within 15m

4. Height different of the piping between the indoor unit and the outdoor unit should be within 8m.

5. Power supply cord length is about 2m

6. Connecting cord 2.5mm2 dia. x 3 is used for connection.

When power supplies to indoor Unit

Line
cord

L
N

Indoor Unit

BA

Connecting
Cord

Outdoor Unit

B
A

– 30 –

MODEL RAC-24CP5

10464

955

26 850

79

340

2022 298

Handle

Fixing hole

Air suction
grille

Holes for anchor bolt
(2-ø12)

507 198

Notch for anchor bolt
(2-ø12 Notchs)

12
37

57

Air outlet

10

1010

320

340

More than

100

638

650

Service space

700

More than

100

More than

201

Handle

96

More than

100

169.5

MODEL RAC-18CP5

16556

28 750

852

57

10

320

340

76

570

559

195

2616 280

166

95

340

280

500

15

12

37

124

10

– 31 –

MAIN PARTS COMPONENT

BLACK

CAPACITOR

RA

RED

INTERNAL
THERMAL FUSE

GRAY

RM

THERMOSTAT

Thermostat Specifications

MODEL RAS-18CP5 / RAS-24CP5
THERMOSTAT MODEL IC
OPERATION MODE

ON
OFF
ON
OFF
ON
OFF

TEMPERATURE
°C (°F)

INDICATION

16

INDICATION

24

INDICATION

32

FAN MOTOR

Fan Motor Specifications

MODEL RAS-18CP5 / RAS-24CP5

PHASE
RA TED VOLT AGE
RA TED FREQUENCY

– – – – –

DC8~ 35V

– – – – –

COOL

15.6 (60.1)

15.3 (59.5)

23.6 (74.5)

23.3 (73.9)

31.6 (88.9)

31.3 (88.3)

RAC-18CP5

SINGLE

220-240V

RAC-24CP5

50 Hz
OUTPUT
POLE NUMBER

CONNECTION

RESISTANCE VALUE

( )

20°C

75°C

DC8 ~ 35V

20 W

– – – – –

RED

YELLOW

5V

BLUE

– – – – –

– – – – –

M

30 W

RM = 248.5

RA = 171.3

RM = 302.2

RA = 208.3

40 W

6

RM = 127.4

RA = 122.5

RM = 154.9

RA = 149.0

– 32 –

COMPRESSOR MOTOR

Compressor Motor Specifications

MODEL RAC-18CP5 RAC-24CP5
COMPRESSOR MODEL SHY33MC4-E SHV33YC1-E
PHASE SINGLE
RATED VOLTAGE 220 ~ 240 V
RATED FREQUENCY 50 Hz
LOCKED ROTOR CURRENT 45 A 60 A
POLE NUMBER 2

WHITE

CONNECTION

20°C

RESISTANCE VALUE

( )

(68°F)

75°C

(167°F)

EXTERNAL OVERLOAD RELAY
INTERNAL PROTECTOR

S (RED)

ORANGE

RM = 1.47
RA = 2.88

RM = 1.79
RA = 3.50

NO

YES

CAPACITOR

RM

M OR R
(ORANGE)

PROTECTOR

RA

RED

RM = 1.030

RA = 2.570

RM = 1.253

RA = 3.125

NO

YES

CAUTION

C (WHITE)

When the refrigerating cycle has been operated for a long time with the capillary tubes clogged or crushed
or with too little refrigerant, check the color of the refrigerating machine oil inside the compressor. If the
color has been changed conspicuously, replace the compressor.

CAUTION

!

RAC-18CP5/RAC-24CP5

When the Air Conditioner has been operated for a long time with the capillary tubes clogged or crushed or
with too little coolant, check the color of the refrigerant oil inside the compressor. If the color has been
changed conspicuously, replace the compressor.

– 33 –

U

A

B

H

G

JJ

T

S

Z

2

1

N

N

P

2

1

RV

3.15A

X

B

E

D

V

M

CK

R OR V

ORG

S OR X

C OR U

RED

RED

GRY

GRY

BLK

BLK

BLK

WHT

BLU

B

A

BLU

BLU

BLU

CN4

BLK

B

A

BRN

BRN

RED

RED

CONNECTING

CORD

WHT

BLK

GRN+YEL

CN13

CN15

CN16

CN14

SWITCHING POWER P.C.B.

GRN

43

43

C1 C2 M1 M2

GRY

GRY

4 LINES

CN2

INDICATING

CN8B

CN10

RED

YEL

BLU

RED

YEL

BLU

WHT

BLK

BLU

BLU

M

M

1231234

1234

RED

BLU

BRN

BLU

GRN+YEL

CN1

TEST

HA

CONTROL P.C.B.

1

2

3

4

WHT

WHT

IVOWHT

REMOTE

CONTROLLER

WHT

BRN

RED

P.C.B.

P.C.B.

RECEIVER

7 LINES

IVO

CN11

CN11

CN2

IVO

BLK

BLK

WHT

CN12

RED

BLK

INDOOR UNIT

OUTDOOR UNIT

WIRING DIAGRAM

MODEL RAS-18CP5/RAC-18CP5

A : COMPRESSOR J : TERMINAL BOARD S : ROOM THERMISTOR

B : FAN MOTOR K : LINE CORD T : HEX THERMISTOR

C : POWER SWITCH M : STICK RELAY U : INTERNAL PROTECTOR

D : THERMAL FUSE FOR 2P TERMINAL (102°C) N : NOISE FILTER V : VARISTOR

E : THERMAL FUSE FOR P.C.B. (96°C) P : POWER RELAY X : FUSE

G : 50 µF CAPACITOR R : SURGE ABSORBER Z : AUTO SWEEP MOTOR

H : 2.5 µF CAPACITOR

BLU : BLUE YEL : YELLOW BRN : BROWN WHT: WHITE

GRY : GRAY ORN : ORANGE GRN : GREEN RED : RED

BLK : BLACK PNK : PINK VIO : VIOLET IVO : IVORY

– 34 –

U

A

B

H

G

JJ

T

S

Z

2

1

N

N

P

2

1

RV

3.15A

X

B

E

D

V

M

CK

R OR V

ORG

S OR X

C OR U

RED

RED

GRY

GRY

BLK

BLK

BLK

WHT

BLU

B

A

BLU

BLU

BLU

CN4

BLK

B

A

BRN

BRN

RED

RED

CONNECTING

CORD

WHT

BLK

GRN+YEL

CN13

CN15

CN16

CN14

SWITCHING POWER P.C.B.

GRN

43

43

C1 C2 M1 M2

GRY

GRY

4 LINES

CN2

INDICATING

CN8B

CN10

RED

YEL

BLU

RED

YEL

BLU

WHT

BLK

BLU

BLU

M

M

1231234

1234

RED

BLU

BRN

BLU

GRN+YEL

CN1

TEST

HA

CONTROL P.C.B.

1

2

3

4

WHT

WHT

IVOWHT

REMOTE

CONTROLLER

WHT

BRN

RED

P.C.B.

P.C.B.

RECEIVER

7 LINES

IVO

CN11

CN11

CN2

IVO

BLK

BLK

WHT

CN12

RED

BLK

INDOOR UNIT

OUTDOOR UNIT

WIRING DIAGRAM

A : COMPRESSOR J : TERMINAL BOARD S : ROOM THERMISTOR

B : FAN MOTOR K : LINE CORD T : HEX THERMISTOR

C : POWER SWITCH M : STICK RELAY U : INTERNAL PROTECTOR

MODEL RAS-24CP5/RAC-24CP5

D : THERMAL FUSE FOR 2P TERMINAL (102°C) N : NOISE FILTER V : VARISTOR

E : THERMAL FUSE FOR P.C.B. (96°C) P : POWER RELAY X : FUSE

G : 60 µF CAPACITOR R : SURGE ABSORBER Z : AUTO SWEEP MOTOR

H : 2.5 µF CAPACITOR

BLU : BLUE YEL : YELLOW BRN : BROWN WHT: WHITE

GRY : GRAY ORN : ORANGE GRN : GREEN RED : RED

– 35 –

BLK : BLACK PNK : PINK VIO : VIOLET IVO : IVORY

CIRCUIT DIAGRAM

Remote Control

Key matrix table

1

SEG5

2

SEG0

3

SEG1

4

SEG2

5

SEG3
SEG4

6
7

SEG5

8

SEG6

9

SEG7

10

COM3

11

COM2

12

COM1

13

COM0

14

SEG14

15

SEG13

16

SEG12

17

SEG11

18

SEG13

19

SEG9

20

SEG8

D3
RB425D(1/2)

C8

50v/1u

LCD 1

K 1

K2K3

K4

K5

P10

P11

K6

K7 K8

K8 K10

K11K12

SEG20
SEG19

SEG18

SEG17
SEG16
SEG21
SEG24
SEG25
SEG26
SEG27
SEG28

P12

40

39
38
37

36

35

34
33
32

31
30
29

NC

28

NC

27

NC

26

NC

25

NC

24

NC

23

NC

22

NC
NC

21

K13 K14

K15 K16

K17

K18

D0

D1

D2

D3

65

66
67
68

69

70
71
72
73
74

75

76
77

78

79
80

64

SEG20
SEG21
SEG22
SEG23
SEG24
SEG25

SEG26
SEG27
SEG28

SEG29
SEG30
SEG31

SEG32

SEG33

SEG34

SEG35

1

62

63

SEG19

SEG18

P41

P40

3

2

R1

100k

60

61

SEG17

SEG16

P42

P43

5

4

59

58

57

56

54

SEG14

SEG15

IC 1

SEG13

SEG12

55

SEG11

SEG10

SEG9

53

52

51

SEG8

SEG7

50

49

SEG5

SEG6

M3455OM6A-510FP

D2

P00

6

P01

7

P02

8

P03

9

P10

10

P11

11

P12

12

P13

13

D0

14

D1

15

16

48 47

SEG4

D3

D4

17 18

46

SEG2

SEG3

D5

19

45

44

SEG0

SEG1

D7

D6

20

21

SW1

SW-187-2P

Input

P10

P11

P12

43

42

SEG42

SEG43

D9

D8

22

23

Output

Door open

Door shut

Door open

Door shut –

Door open

Door shut

41

SEG41

SEG40

40

P30
P31

39

VL C2
VL C3
XC IN

XC OUT

VDD

VSS

X OUT

X IN

RESET

CARR

P23
P22

P21

P20

BEEP

24

38
37
36
35
34
33
32
31
30
29
28
27
26
25

R2

100k

NCVL C1

D0 D1

Start/Stop

Operation selection

Start/Stop Super silent cooling

On timer

Hour up

Room temperature up

Off timer –

Sleep –

D1 D2

EL-1L7

R6

R7

R3

100k

24(1/8W)

R5

330

P

R4

100k

Q1

2SC3443

or 2SC2982

D2D1

R8

R6 R9

R9

R10
12M

D2

Fan speed selection

–

Hour down

Room temperature down

Reservation

–

D3

RB425D

(1/2)

X1

K19

910kHz

C9

105

Automatic swing

•

Day

Super cooling

R11

150k

X2

32.768

kHz

C6

104

D3

–

present time

Cancel

–

R14
220k

R13

220K

104

C7

R15

100k

R16
100k

C1

334

C2

220p

C3

220p

C4
18p

C5
22p

– 37 –

R12

220k

10 16 D(VX) R

RD(VX)1610

C403

C402

H

2

± 5%

2.0K

R914

A

1/6W

± 5%

0R509

NOTES:

1. THE COMPONENT WITH A "H" MARK ON THE LEFT
OF THE TABLE ARE BELONG TO INDICATING BOARD.

2. THE DEFINATION OF MOUNTING FORM
a) C --- SURFACE MOUNT (SMT)
b) H --- HAND INSERTION
c) R --- RADIAL
d) A --- AXIAL

3. THE DEFINATION OF TYPE OF CAPACITOR
a) F --- FILM
b) C --- CERAMIC
c) D --- ELECTROLYTIC

AA1A4M

AA1A4M

H

SIN-21T-1.8S

BLUE WIRE

A

1/6W

± 5%

10k
1kR321

A

1/6W

± 5%

1k

SWITCHING POWER SUPPLY

SWITCHING POWER SUPPLY

WHITE

H

H

WHITE

B2B-XH-A (TOP ENTRY)

B2P3-VH (TOP ENTRY)

A

1/6W

± 5%2K

R714

AD904 RICP-2.0ATICP2

HGLASS CAPSULE

3.15A
FUSE

VARISTOR1

CN10

CN8B

±

20%

250.1

RF500.1C106

1000P RC50

C710

R

R0.047 C25

0.047 C25

0.1

0.1

0.1

R

R

R

R

C50C401

C381

C361

50C321

C

C

50

50

C302

C301

C

0.1

DC450

C

0.01HAC250

0.01 AC400

AC300

±

20%

1000P

1000P

C212 100

DH

C211

AC250C210

H

0.01

C

CH

H

H

C207 AC250

C206

C205

AC250

C

F

33

TYPE

VOLTAGE

(V)

CAPACITANCE

(F)

SYMBOL

CAPACITOR

MOUNTING
FORM

RC25

6.3

C512

C511

C501

RC50

0.1

0.1

0.082 AC300

25 C0.1

5068

C101 50

D(PF)
C102
C103
C104
C105

10

C107
C108

2550C

C

C109

150

H

R

R

R
R
R

MOUNTING
FORM

SYMBOL

CAPACITANCE

(F)

VOLTAGE

(V)

TYPE

µ
µ

µ
µ

µ
µ

µ

µ
µ
µ
µ

µ
µ

µ
µ

µ

µ

220

50

D(VR)

220

1000P

0.047
1000P

R

R
R

D(PF)

D(PF)

C

C901

50

C902

H150

D(PF)

25 C0.1 R

C208 0.047

FH

HC

C209

C621 47

16

D(MF)

H

C601

CR

R

D(VX)

HZ5.1B-J AZD701

THERM-FUSE (P.C.B)

H

WHITEXH-3P (TOP ENTRY)

CN4

SYMBOL

MODEL NO.

MOUNTING
FORM

SIN-21T-1.8S

BROWN WIRE

XH-4P (TOP ENTRY)

WIRES

SIN-21T-1.8S

SIN-21T-1.8S

SIN-21T-1.8S

H

H

H

RED WIRE

BLACK WIRE
WHITE WIRE

H

1.5A

H ,

450 HL901

SSSS9AE

A1SS-120D401
A1SS-120D701

D303 1SS-120 A

A1SS-120D302

A1SS-120D301

MODEL NO.SYMBOL

MOUNTING
FORM

DIODE

A1SS-120D304

DB201 D3SB60 H

H

H

H

TEMPOPARY
SWITCH (SW1)
INFRARED
RECEIVER

EF0EC8004A

450NR-12D

OSC1

SURGE
ABSORBER

MODEL NO.

SYMBOL

OTHERS

450NR-12D

FUSE
RESISTOR

BUZZER

VARISTOR2

MOUNTING
FORM

H
H
H
H
H
ARF25S

DSA-362MA-05
PKM13EPY

G4A-RY-200

OUTDOOR FAN
RELAY

H

REVERSING VALVE
RELAY

STICK RELAY

G4A-RY-200

H

POWER RELAY

MODEL NO.

SYMBOL

MOUNTING
FORM

RELAYS

H

H

H

H

H

H

MOUNTING
FORM

XH-3P (TOP ENTRY) WHITE

CN1

MODEL NO.SYMBOL

COLOR

CONNECTORS

REMARKS

THERM-FUSE (2PTERMINAL)

CN3

CN12

VH-4P (TOP ENTRY) WHITE ROOM HEX. THERMISTOR

CN13

BNH-6P (SIDE ENTRY) WHITE STEPPING MOTOR

CN14

WHITE HA TERMINAL

CN15

PH-4P (SIDE ENTRY) EEPROM

CN16

ZR-3P (SIDE ENTRY) TEST PIN

H

H

H

H

AX-3T2/AX-3T3 H

ULN2003AN

S24C01BDP

TL5001CP
MC7805CT

IC1
IC301

IC701

REG1
REG2

MODEL NO.

SYMBOL

MOUNTING
FORM

ZENER DIODE

MODEL NO.

SYMBOL

MOUNTING
FORM

TRANSISTOR

MODEL NO.

SYMBOL

MOUNTING
FORM

ICs

R

R

2SC458CT

Q511

AA1A4M

Q301

WHITE

G5N-RELAY
G5N-RELAYHH

BLACKVH-2P (3P, TOP ENTRY)

H

REVERSING VALVE &
OUTDOOR FAN RELAY

SU16V-10035 H

NOISE
FILTER

D902 A

A

ZD102

RQ512

2SA673CT

Q901

2SJ326

H

R

ZD101 A

SBX8035-F

RICP1

IC PROTECTOR

MOUNTING
FORM

SYMBOL

MODEL NO.
ICP-0.6AT

L101 H

INDUCTOR

MOUNTING
FORM

SYMBOL

RATED VALUE.

82 1.3A

H ,

L102

H ,

560 0.6A H

ZD511 HZ7B2 A

AD102 D1NL40

H
H

LD721
LD723
LD725

YELLOW
RED
GREEN

SEL6914A
SEL6214S
SEL6414E

R

ESD172306

SERVICE
SWITCH

R

RATED VALUE.

SYMBOL

MOUNTING
FORM

LED

AHZ30-2

HZ24-3

CN2

ZR-4P (TOP ENTRY)

CN11

ZR-7P (TOP ENTRY) IVORY

IVORY

IVORY

H

H

RECEIVER BOARD

INDICATING BOARD

H

EARTH (GREEN)

SIN-41T-2.4S

H

Q302
Q303 R

2SA1757F
2SC1214CTZ

H
R

Q903
Q904

R

ZD100 HZ24-3 A

A

1/6W

1/6W

1/6W
1/6W
1/6W

A

A

A

A

A

A

1/6W

A

A

1/6W

A

A
A

A
A

A
A

A

A

A
A

A
A
A
A
A

A

H

A

A

A

A

A

A

A

A

A

A

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

± 5%

220K

R109

R108

2.2K

± 5%

1/6W

1/4W

± 5%

330

R107

R106

330

± 5%

1/4W

1/4W

± 5%

470

R105

1/4W

± 5%

5.6K

R100

± 5%

1/6W

± 5%

130K

1/6W

± 2%

3K

1/6W

± 2%

33K

1/6W

± 5%

120K

± 5%
± 5%

± 5%

± 5%

± 5%

± 5%

± 5%

± 5%

FORM

± 5%

FORMFORM

± 5%

± 5%

± 5%

± 5%

± 5%

POWERTOLERANCERESISTANCESYMBOL

RESISTOR

SYMBOL RESISTANCE TOLERANCE POWER SYMBOL RESISTANCE TOLERANCE POWER

R205
R206

± 5%

1/6W

± 5%
± 5%

± 1%
± 5%

± 1%
± 5%
± 2%

± 5%
± 5%

R101
R102
R103
R104

± 5%

560K

7W

± 5%

1/2W

7.5

± 5%
± 5%
± 5%
± 5%
± 5%
± 5%

1/6W
1/6W
1/6W
1/6W
1/6W
1/6W

A

A

A

A

A

A

A
A
A
A
A

1/6W

1/6W

1/6W

1/6W

1/6W

± 5%

± 5%

± 5%

± 5%

± 5%

± 5%

1/6W

A

R932

R931

R930

R920

R919

R917

R916

R913

R906

SYMBOL RESISTANCE TOLERANCE POWER

R801

3.3K

± 5%

FORM

R721
R723
R725

300

± 5%

± 5%

240

240

± 5%

R911

1/6W

± 5%

± 5%2.0K

2

3.3K

± 5%
± 5%3.3K

20K

± 1%

2.21K ± 1%

± 1%

1K

8.25K ± 1%

5.1K

± 5%

A
A
A
A

A
A
A

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

1/6W

A

1/6W

A

A

1/6W

A
A

1/6W

1/6W

H

A

1W

± 5%

0.2

R610

R601

R603

R606
R607
R608

10K

10K

1K

R609 1K 1/6W

10K

5.1K

10K

R602

R604
R605

10K
1K

± 5%

± 5%

± 5%

1/6W
1/6W

A

A

10K

1/6W

A

± 5%

1/6W

A

1K

R621

47

R622

A

± 5%

R712
R713

1K
2K

1/6W
1/6W

R303
R304
R305
R306
R307

390

390
390

5.1k
390

5.1K

R302

R313 10k

10k
10k
10k
10k

R314
R315
R316
R317

10k
10k

R318
R319
R320

R331
R332 10k

R361
R362

12.7k
1k

R381 18k
R382
R383 2.4k

1k

R404
R405

10k

1k

1k

R511
R512
R513
R514
R515

2.7k

5.1k

10k

5.1k

3k

R510 1M

RRRR

R
R

D2S6M

300

ISS131

YELLOW WIRE

H
H

RED WIRE

SIN-21T-1.8S
SIN-21T-1.8S

µ

µ
µ
µ

µ
µ

µ
µ

µ

µ

µ

µ

µ

µ

PRINTED WIRING BOARD LOCATION DIAGRAM

MODEL RAS-18CP5/RAS-24CP5

GND

CN1

(XH-3P)

WHITE

CN4

(XH-3P)

WHITE

HEAT EXCHANGER
THERMISTOR

RESISTANCE: 10K ohms ±3% (25 C)
B-CONSTANT: 3950K ±2% (B25/50)

ROOM TEMPERATURE
THERMISTOR

RESISTANCE: 10K ohms ±2% (25 C)
B-CONSTANT: 3950K ±2% (B25/50)

OPERATION LAMP

RECEIVER BOARD
(R-BOARD)

V

DD

RECEIVER

UNIT

R621

VOUT

C621

+

-

CN10

(XH-2P)

WHITE

THERM-FUSE FOR
2PTERMINAL

THERM-FUSE FOR

INDICATION BOARD
(H-BOARD)

FILTER LAMP

TIMER LAMP

LD723
LD721
LD725

(ZR-7P)

R622

15A
15A
10A

NORMAL
NORMAL

TEMPORARY
OPERATION

CURRENT
SELECTOR

TEMPORARY
OPERATION

SW1

SERVICE SWITCH

SWITCHING POWER BOARD

1

2W

2.2K

3

CN15

(PH-4P)

WHITE

CN12
(VH-4P)
WHITE

BLACK
BLACK

CN16
(ZR-3P)

IVORY

TEST PIN

CN2

(ZR-4P)

1
2
3

4

CN11

5
6
2
3
4
7
11

200V

10A

50V
220 F

3
1
3
1

4

3
2
1

GRAY

4

GRAY

3
2
1

1
2
3

CN2

(ZR-4P)

1
2
3

4

CN11

(ZR-7P)

5
6
3
2
4
7

200V

1A

250V

0.0022 F

JW1

0V

5V

0V

R713

ZD701

0V

0.047 F

HZ5B1

1/4W

0.01 F

1/6W 3.5K
1/6W 1K

2W 150

2W
150

+

­25V

120 F

2200pF
1KV

70V 0.15A

50V

0.5A

HZ7B1L

220 F
50V

800V
1A

70V 0.15A

70V

0.15A

R307
R304

IC301/IC302

(E2PROM)

134

5V

D401

0V

R405

R404

12V

R714

L (BROWN)
N (BLUE)
E (GREEN&YELLOW)

1/4W 470K
1/4W 470K

3W 120

25V

0.7A

R303

R306

56827

+

800V

-

3A

5V

C302

C301

0V
R383

R362

R382

R361

R381

0V

M-BOARD

POWER-SW

2

1
3

RED

4

BLUE

1

450V,2.2 F

3

BLK

5V

CN8B

(VH-2P)
WHITE

GREEN

BRN

RED

NOISE FILTER1

D301

D304

0V

D302

D303

Q301

0V

C381

C361

0V

D306

0V

5V

D305

12V

5V

+

0V

+

-

C511

RESET

R721
R725
R723

R514

R513

Q511

Q512

R511R512

ZD511

0V

12V

BZ1

B.Z

R801

Q302

0V

R206

D904

0V

C321

+

C403

C402

0V

R515

0V

C212

L101

R930

R932

5V

C213

R906

R931

OSC1

R712

VARISTOR 1

SURGE
ABSORBER

(D3SB60)
DB201

35V

+

C101

5V

R302
R305
R313
R314
R315

R316

R331
R332

C401

R317

R509

C512

C710
R318

R319

R320
R321

C501

ICP1

2

10
11
12
13
14
15
16
17
18
19
20
21
22

23
24

R510

25
26
27
28
29
30
31
32

3.15A
FUSE

NOISE FILTER2

VCC

1

P9 0
P9 1

3

P9 2

4

P9 3

5

P9 4

6

P9 5

7

P9 6

8

P9 7

9

AV CC

AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7

AVSS

TEST

V

RES

IRQ

TM0E

VARISTOR 2

C203 C202

R100ZD100

+

-

C109

ICP2

PWM O/P

SDA

SCL
NO USE
NO USE
NO USE

HEX. TEMP
RANGE SELECTION

NO USE

EEPROM
SELECTION

ROOM TH.
HEX. TH.

FAST FEED
TEST INDICATION

MODE

NO USE

PWM VOLTAGE
FEEDBACK

INDOOR FAN
OVER-CURRENT

2X
1X

SS

1OSC
2OSC

REMOCON I/P

0

NO USE

1IRQ

SINGLE/MULTI

4IRQ

BUZZER
CURRENT TRANS

6P1

HA O/P

7P4

C207 C206

C201 C200

C108
R101

R104

R916

IC1

EEPROM

R205

C205

2

REG1

6
7

5

R911

R917

LOUVER

CCW

FAN

REVERSING VALVE R.

OUTDOOR FAN RELAY

AMAND

REMOCON SELECTION

ZD101

R107 R106

1
4

3

8

Q903

Q904

FAN LO (MED)

OUTPUT

FAN S (LOW)

POWER RELAY
STICK RELAY

ABNORMAL
FAN CURRENT

AUTO RESTART

REMOCON ID

TEST INDICAT.

SELECTION

FORCED COOL

COOL/DEHUM.
COMP. OPER.

LED OUTPUT

FAN MOTOR
DRIVER

R914

R913

NO USE
NO USE
NO USE
NO USE

HEATER

FAN HI

NICE TEMP.

CANCEL

HA I/P

DASH

FILTER/

POWERFUL
TIMER

OPERATION

DEHUMIDIFY

7P7
6P7
5P7
4P7

B

3P7

A

2P7

B

1P7

A

P70
P67
P66
P65
P64
P63
P62
P61
P60

P17

X2

P57

X1

P56
P55
P54
P53
P52

1P5
0P5
0P4
1P4
2P4
3P4
4P4
5P4
6P4

POWER RELAY

43

STICK RELAY

POWER SUPPLY

L102

Q901

R105

D102

C106R108

R109

C105

5V

64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48

R601

47

R602

46
45
44
43
42
41
40
39
38
37
36
35
34
33

R603

R607

C601

R610

43

+

R102R103

C102

L901

D902

REMOCON ID

ID1

(A/B SELECTION)

R604

R605
R606

R608

R609

0V

ZD102

+

IC701

7
6
5

4
3
2
1

I

REG2

C104

C901

12V

9

8

0V

REVERSING VALVE RELAY

2

OUTDOOR FAN RELAY

O

+

-

C107

G

R919

R920

10
11
12

REVERSING VALVE

13

OUTDOOR FAN RELAY

14

POWER RELAY

15

STICK RELAY

16

SERVICE SW

0V

C103

5V

C902

D701

Q303

0V

COOL

NORMAL

3
32

12V

5V

0V

RED

YELLOW

BLUE

12V

12V

5V

0V

WHITE
BLACK

RED

1

BROWN

3

CN3

(VH-2P)

BLACK

CN13

(BNH-6P)
WHITE

5
4
3
2
1

CN14

(XH-4P)

WHITE

C1

1

C2

2

M1

3

M2

4

RED

YELLOW

BLUE

M

STEPPING
MOTOR

HA

TERMINAL
BOARD

B
A

D
C

INDOOR DC
FAN MOTOR

M

– 39 –

BLOCK DIAGRAM

MODEL RAS-18CP5/RAC-18CP5

RAS-24CP5/RAC-24CP5

– 41 –

INDOOR UNIT

POWER SUPPLY

WIRELESS REMOTE
CONTROLLER

ROOM TEMPERATURE
THERMISTOR

HEAT EXCHANGER
THERMISTOR

DC FAN MOTOR
OPERATION CIRCUIT

WIRELESS RECEIV­ING CIRCUIT

POWER RELAY
STICK RELAY

INDOOR

FM

FAN MOTOR

BUZZER CIRCUIT

MICROCOMPUTER

OUTDOOR UNIT

M

FM

RELAY

INDICATION
LAMP

COMPRESSOR

OUTDOOR
FAN MOTOR

POWER RELAY
STICK RELAY

OPERATION
TIMER
FILTER

INITIALIZING

CIRCUIT

RESET

CIRCUIT

(AX-3T3)

MICROCOMPUTER
CLOCK CIRCUIT

AUTO SWEEP MOTOR 1

M

On / Off switch
Fan Speed

Stick relay

ON / OFF switchON / OFF switch

Operation lampOperation lamp

Operation and stop are repeated independent of timer reservationsOperation and stop are repeated independent of timer reservations

ON / OFF switchON / OFF switch
ReservationReservation
CancelCancel
Operation lampOperation lamp
Timer lampTimer lamp
Timer memoryTimer memory

(OFF timer during stop)(OFF timer during stop) (Cancel)(Cancel)

(Change of the reservation time)(Change of the reservation time)

ON / OFF switchON / OFF switch
ReservationReservation
CancelCancel
Operation lampOperation lamp
Timer lampTimer lamp
Timer memoryTimer memory

(ON timer during operation)(ON timer during operation)

(Cancel)(Cancel)

(Change of the reservation time)(Change of the reservation time)

ON / OFF switchON / OFF switch
ReservationReservation
CancelCancel
Operation lampOperation lamp
Timer lampTimer lamp
Timer memoryTimer memory

(OFF ON timer)(OFF ON timer) (ON OFF timer)(ON OFF timer)

(ON OFF timer during operation)(ON OFF timer during operation)

(OFF ON timer during stop)(OFF ON timer during stop)

PM1:00 PM3:00 PM5:00PM1:00 PM3:00 PM5:00

PM1:00 PM3:00 PM5:00PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00PM1:00 PM3:00 PM5:00 PM1:00 PM3:00 PM5:00PM1:00 PM3:00 PM5:00

BASIC MODE

+3
+2
+1

Set temperature

ON / OFF Switch
Fan Speed H
Fan Speed M
Fan

Speed

Power

relay

Stick relay

Operation lamp

H L M L M H L

L M M

2 sec

2 sec

2 sec

2 sec

+3+3
+2+2
+1+1

-1

-2

-3

Set temperatureSet temperature

ON / OFF SwitchON / OFF Switch
Fan Speed LFan Speed L

Stick relayStick relay

Operation lampOperation lamp

L L L LL L L L

MODEL RAS-18CP5/RAC-18CP5//RAS-24CP5/RAC-24CP5

No.

Control function

ON / OFF switch,

1

basic mode

Operation mode

Fan Cooling Sensor dehumidification Circulation Automatic

OFF timer

Timer

2

operation

ON timer

OFF
timer

Automatic

3

Fan speed
mode

HI

MED

LO

Thermostat operation
H

➞

HI

➞

MED

M
L

➞

4

LO

• The power relay is
delayed by 2 seconds
from the start of
thermostat.

➞

ON

➞

“HI”, “MED”, or “LO” operation is

•

executed according to the thermostat
signal. (Refer to “Thermostat operation”.)

Operation in “HI” mode

•

Operation in “MED” mode

•

Operation in “LO” mode

•

Only circulation with cut

•

velocity is executed,
independent of the
thermostat signal.

(1) Strong

On / Off switch
Fan Speed

Stick relay

Same as on the left.

•

Same as on the left.

•

Same as on the left.

•

(1) In case of “Automatic” mode

+3
+2

Speed

relay

+1

-1

-2

-3

L

2 sec

H L M L M H L

Set temperature

ON / OFF Switch
Fan Speed H
Fan Speed M
Fan

Power
Stick relay

Operation lamp

Note:

The min. ON time of the power relay

•

is 3 minutes, and the min. OFF time
also is 3 minutes.

(2) In other modes than “Automatic”

Same as above (but operation is
made with the velocity set at the
time of operation start).

2 sec

2 sec

L M M

2 sec

“LO” and “Stop” are repeated according to the thermostat

•

signal, independent of the setting.

(1) When the set temperature is lower than the room temperature.

+3
+2

Set temperature

ON / OFF Switch
Fan Speed L

Power relay
Stick relay
Operation lamp
Dry lamp

Notes:

The min. ON time of the power relay is 3 minutes, and the min.

•

OFF time also is 3 minutes.

+1

-1

-2

-3

30 sec

2 sec 2 sec2 sec

L L L

30 sec

• The indoor fan is not delayed with operation start by ON / OFF
button.

(2) Set temperature is higher than room temperature.

Set temperature

0.66 deg

0.33 deg

ON/OFF Switch
Fan Speed L

Power relay
Stick relay
Operation lamp

Dry lamp

-1

-2

-3

-4
30 sec

2 sec

30 sec

2 sec

Notes:

Forced operation by ON /

•
OFF button ON is executed
even with thermostat OFF.

The room temperature 30

•
sec after operation start,
minus 0.66 deg, becomes
the set temperature.

•

When the room temperature

is 16°C or lower, 16°C

becomes the set temperature.

•

The other operations are the
same as for (1).

❈ Both operation lamp and Dry lamp light during Sensor

dehumidification at operation mode.

Repetition of “HI” and “Stop” by means of thermo signal and time.

•

Repetition of “MED” “Stop” by means of thermo signal and time.

•

Repetition of “LO” “Stop” by means of thermo signal and time.

•

The “Automatic” speed mode for

•

each operation mode is used
independent of the setting.
(“LO” at the time of “Sensor
dehumidification”.)

The operation mode at the start

•

of operation differs as shown
below according to the room
temperature.

➞

Cooling The set temperature

shall be 27°C.

Sensor The set temperature
dehumidi- shall be 2 degrees
fication below the room

operation

at the start of

➞

Room temperature

temperature at the
start of operation.

Notes

• A shift is not accepted at the
time of operation start.

• There is no switching between
modes after start of operation.

• When the operation is started
again within 20 hours after stop
with the ON / OFF button,
operation will be executed in the
previous mode.

• The operation details are the
same as for each operation
mode.

• The set temperature is set with
the room temperature adjustment
button. Correction by , ±3°C is
possible with. At this time, the
operation mode judgement
temperature also is shifted at the
same time. However, correction
is possible only in cooling
operation mode, but not in

“Sensor dehumidification” mode.

– 43 –

No.

Set circulation velocity

Set temperature

N / OFF Switch
Timer reservation
Sleep mode
Operation lamp
Timer lamp

60 minutes

2 deg up

Low (sleep operation)

Control function

Operation mode

Fan Cooling Sensor dehumidification Circulation Automatic

5

Sleep mode

The set temperature

•
after sleep shift in
sensor dehumidification
operation is limited
by 16°C.

The operation is

•
switched OFF
at the set time.

Set temperature
ON / OFF Switch

Timer reservation
Sleep mode
Operation lamp
Timer lamp

Set circulation velocity

2 deg up

60 minutes

Low (sleep operation)

Notes:

60 minutes after the sleep key is switched on, sleep operation is started.

•
When the sleep key is switched on during OFF timer operation, the OFF timer will be canceled.

•
The sleep operation is started when the sleep key is “ON” after timer reservation.

•

The operation is switched OFF at the set time.

•

Sleep operation is executed for each

•
operation mode.

No.

Control function

Defrost

6

Operation mode

Cooling Sensor dehumidification Circulation Automatic

Defrosting of each operation mode is

•

executed.

– 45 –

52.5

Down

Up

52.5 in up direction

90 in down direction

Swing start direction

52.5

Down

(52.5 in up direction)

Up

“NICE
TEMPERA-

6

TURE”
reservation

● Operation starts in advance so that the room temperature reaches

the preset value at the set time.

● The operation time is obtained as follows depending on the room

temperature when operation starts.

(1) Calculation method of the moved-up time.

Moved-up time (MT) = Moved-up time depending on the temperature
difference (OT) + compensation time (HT).
MT is at least 5 minute if OT is not zero.

Cooling

(MT) 00 ~ 60 min.

(OT) 0 0 ~ 60 min.
(HT) –60 ~ 60 min.

Obtain OT (moved moved-up time depending on the temperature
difference) from the table below.

Cooling

Setting temp.

–

Room temp. Time (min.)

00.00 – 02.00 00

02.25 – 05.00 15

05.25 – 08.00 30

08.25 – 11.00 45

11.25 – 60

❈ The preset temperature value shown above does
not include any shift value.

(2) Compensation

1 The “Attained” state is monitored and a “Not attained” check is

done to revise the compensation time (HT).

“Attained” monitor
Continuously monitored during “NICE TEMPERATURE” operation.

(Cooling)
When the room temperature < Set value + compensation shift, it

is regarded to be “attained” and 5 minutes are reduced from the
cooling compensation time.

“Not attained” check
Performed once when the “NICE TEMPERATURE” timer is completed.

(Cooling)
When the room temperature > Set value + compensation shift

+1°C, it is regarded to be “Not attained” and 5 minutes are added
to the cooling compensation time.

● The air deflector control operation shown below is done when the swing switch is

pressed or when the operation mode is changed.

● The air deflector control operation shown below is done when the operation switch

is turned off after the filter sign lamp is lit.

Specification

Down

❈ Swing start direction

❈ 90 in down direction

Up

52.5 in up direction

52.5

8

Air
blowing
direction

Item

Cooling/
dehumidi­fying

3-way AUTO (Swing)

control

Circulator

The same as cooling ● dehumidifying

Vertical positioning
90 in down direction

32 in up direction

32

(When the
operation
switch is
turned off
after the
filter sign
lamp
lights.)

Vertical positioning
90 in down direction

91.5 in up direction

91.5

Table 1 Specifications

Item RAS-18CP5/RAS-24CP5

Automatic Yes
Circulator Yes

Operation switching Sensor dehumidification Yes

Cooling Yes

Fan Yes
Temporary switch Yes (automatic)
Service switch Cooling Yes
Nice temperature reservation Yes
Defrosting Yes (cooling defrost)
Sleep mode Yes
Heater operation at the time of sensor dehumidification No
Automatic blowing direction Yes
Filter sign Yes
Wireless mode Cooling

Other detailed specifications

1. When the room temperature starts to
increase within 3 minutes after thermo
OFF in “cooling” and fan speed “AUTO”,
the fan speed changes L ➞ M ➞ H as
when thermo ON.

2. If “cooling” is selected during “sensor
dehumidification” operation the operation
continues as it is with the thermo ON.
The 3 minutes delay is not started. The
set temperature and fan speed depend
on the remote control signal.
It is same for “cooling” – – – – “sensor
dehumidification”. It is same for “AUTO”
sensor dehumidification cooling “sensor
dehumidification” “cooling”.

3. The filter sign lights after 100 hours
operation of the room fan. The time is
cleared when power switch set to OFF
and ON again.

4. After the failure mode is started (indicator
lamp flickering), rapid mode changing
cannot be done.

5. If the operation is made by the nice
temperature reservation during the sleep
operation, the normal operation
continuously occurs, and for the advance
time, the temperature difference between
the set temperature without sleep shift
and “room temperature” is used.

❈ If the room temperature is within +1°C from the set value +

compensation shift, compensation is not done.

Item
Low-temperature defrosting

Table 2 Sensor operation values

(T1)
(T2)

ON (°C) 4.0
Reset (°C) 12.0

RAS-18CP5/RAS-24CP5

– 47 –

REFRIGERATING CYCLE DIAGRAM

COOLING, DEHUMIDIFYING

OUTDOOR UNIT

INDOOR UNIT

SERVICE V ALVE

SUCTION
TANK

SERVICE V ALVE

SINGLE-ENDED
UNION

SINGLE-ENDED
UNION

CAPILLARY

STRAINER

COMPRESSOR

MODEL RAS-18CP5/RAC-18CP5

MODEL RAS-24CP5/RAC-24CP5

COOLING, DEHUMIDIFYING

OUTDOOR UNIT

SUCTION

TANK

COMPRESSOR

PRESSURE

VALVE

SERVICE

VALVE

SERVICE

VALVE

INDOOR UNIT

STRAINER

– 49 –

SINGLE-ENDED
UNION

DESCRIPTION OF MAIN CIRCUIT OPERATION

1. ON / OFF

The “ON / OFF” and “Timer reserve button” and “Sleeping” function independently. Their
operations are shown in Fig. 1-1.

Start Stop Start

ON/OFF button

Timer reserve button

When OFF
timer
(sleeping)
is set

(Sleeping)

Operation lamp

When ON
timer is set

Timer lamp

ON/OFF button

Timer reserve button

Operation lamp

Timer lamp

Start

"OFF" time

Stop

"ON" time

Fig. 1-1 Timer operation

– 50 –

2. Reset Circuit

12V

R511

ZD511

R512

0V

5V

Micro computer

26

(AX-3T3)

RES

R514

Q512

R513

Q511

+

C511

–

R515

C512

0V

12V

DC12V Line

7V
5V

DC5V Line

Base

POWER ON

POWER OFF

Micro computer
Pin 26

● The reset circuit is used to reset the program to its initial settings when the power is turned on or when the

5V

power is recovered after a power failure.

● The micro computer is reset when the reset input is “Hi”, and operation is possible when the reset input is

“Lo”.

● The waveforms at each point when the power is turned on and off are shown in the diagrams.

● When the power is turned on, the voltages of the DC 12V line and DC 5V lines are increased. When the

voltage of DC 12V lines reaches about 7V, ZD511 is turned ON, the potential of Q511’s base rises and Q511
is turned ON. Since Q511’s collector is set to “LO” at this time, Q512 is turned OFF and the reset input of
the micro computer is set to “Lo”. The DC 5V line voltage has already become 5V at this time and the micro
computer starts operation.

● When the power is turned OFF, the voltage of the DC 12V line decreases. When it becomes about 7V, ZD511

is turned OFF, then Q511 is turned OFF, Q512 is turned ON the reset input of the micro computer is set to

“Hi’ and the micro computer is set to the reset mode.

– 51 –

3. Buzzer Circuit

R621

R712

C710

ZD701

0V

0V

R622

Receiver

Unit

R714

R713

12V

27

Micro computer

(AX-3T3)

REMOCON I/P

12V

BZ1

B.Z

Q302

0V

R801

Micro computer

(AX-3T3)

30

BUZZER

When the buzzer is to be activated, buzzer output pin 30 of the micro computer alternates between ON and OFF
repeatedly at 4kHz and Q302 is turned ON/OFF accordingly. A 4kHz voltage is applied to the buzzer and the
diaphragm of the buzzer vibrates to output 4kHz sound.

4. Initial setting (IC301)

The pre-heating operation start value, ratings of the compressor, maximum rotation speed, etc. are preset in
the micro computer.

5V

D302

D301

5. Receive circuit

R303

R306

87

65

IC301

2

(E

PROM)

12 4

3

5V

C301

0V

C302

D304

0V

D303

R302
R305

Micro computer

(AX-3T3)

3
4

Infrared signals from the wireless remote controller are received by the light receiving unit and output after being
amplified and shaped.

– 52 –

6. Service Operation Circuit

5V

Micro computer

(AX-3T3)

FORCE COOL 42

R606

Cool
Normal

0V

● Use the service switch to select “Cooling” temporarily when the interior electric equipment has troubled.

● Setting the switch to “Cooling” causes continuous cooling room temperature control. To control the room

temperature, turn on and off the disconnect switch. To protect the compressor, wait at least 3 minutes
before turning on again.

● The fan speed is “MED”.

● Does not operate is 12V is not generated in the control circuit.

● When the service switch is used for operation, each change switch is overridden.

● Setting the service switch to “Cooling” turns on the “Stick relay” and “Power relay”.

– 53 –

REFERENCE

INITIALIZE AT NEXT

OPERATION.

OPERATING SPECIFICATION

STOP AT THE MOMENT.

START SWINGING

1 DOWNWARD

2 UPWARD

ONE SWING (CLOSING AIR DEFLECTOR)

1 DOWNWARD

2 UPWARD

3 DOWNWARD

STOP AT THE MOMENT.

START SWINGING

1 DOWNWARD

2 UPWARD

STOP AT THE MOMENT.

3 DOWNWARD

START SWING AGAIN.

STOP SWINGING TEMPORARILY.

(SWING MODE IS CLEARED IF SWING COMMAND IS

INITIALIZE

1 DOWNWARD

TRANSMITTED DURING TEMPORARY STOP.)

2 UPWARD

INITIALIZE AT NEXT

INITIALIZE

1 DOWNWARD

ONE SWING (CLOSING AIR DEFLECTOR)

1 DOWNWARD

OPERATION.

2 UPWARD

STOP SWINGING AND MODE BECOMES INITIALIZING

INITIALIZING CONDITION OF EACH MODE.

CONDITION.

STOP

DURING ONE SWING

PRESENT CONDITION

EACH MODE

OPERAT ION OPERATION MODE AIR DEFLECTOR

INPUT SIGNAL

AUTO SWING FUNCTION

STOP

KEY INPUT

STOP

AUTO COOL

COOL

FAN

AUTO DRY

DRY

DURING SWINGING

DURING

OPERATION

STOP

CIRCULATOR

DURING SWINGING

TEMPORARY STOP

INTERNAL FAN

ON

DURING SWINGING

AUTO DRY

DRY

CIRCULATOR

DURING

OPERATION

(THERMO. ON)

INTERNAL FAN

(THERMO. OFF)

OFF

STOP

DURING ONE SWING

STOP

DURING ONE SWING

COOL

FAN

DRY

CIRCULATOR

STOP

MAIN SWITCH

ON

STOP

DURING SWINGING

DURING

INITIALIZING

STOP

EACH MODE

DURING

OPERATION

MAIN SWITCH

OFF

DURING

CHANGE OF

DURING SWINGING

EACH MODE

OPERATION

OPERATION

– 54 –

SERVICE CALL Q & A

Cooling operation

While cooling, the

Q1

compressor sometimes stops
abruptly.

Dehumidifying operation

The fan speed does not

Q2

change during a
dehumidifying operation.

Cold air comes out during a

Q3

dehumidifying operation.

The operation does not stop

Q4

even by raising the room
temperature setting of remote
control at a dehumidifying
operation.

Check whether frost sticks

A1

on the heat exchanger of in­door unit or not.
Wait for 3 – 4 minutes until
the frost melts.

The fan speed is always LO

A2

at a dehumidifying operation.

To improve the dehumidi-

A3

fication efficiency, LO fan
speed operation is
performed. Therefore the air
is cold. This is not a trouble.

At a dehumidifying operation,

A4

the actual room temperature is
compared with the room tem­perature setting when starting
the operation and the opera­tion is as follows.

1) When actual room tem­perature > room tempera­ture setting.
The operation is according
to the room temperature
setting on the remote con­troller.

2) * When actual room tem­perature < room tempera­ture setting
Regardless of the room
temperature setting, the
temperature is automati­cally set slightly lower than
the room temperature.

In this case, the status is as 2)
and, therefore, the operation
by the room temperature
control is impossible. Turn off
the On / OFF switch, set the
room temperature to a new
value and turn on the opera­tion by the On / Off switch.

If cooling is performance
when the room temperature
is low, frost may stick on the
heat exchanger of indoor
unit.

In the dehumidifying mode,

Q5

the temperature set by
remote controller is set
slightly higher than the room
temperature but the
operation starts.

This is the status in 2) of

A5

(A4). The temperature is set
a little lower than the room
temperature to carry out a
dehumidifying operation as
far as possible.

– 55 –

Automatic operation

How is the automatic

Q6

operation mode determined?

At an automatic operation,

Q7

changing the fan speed
change switch does not vary
the fan speed.

According to the room

A6

temperature, cooling or
dehumidifying operation is
automatically selected.

Cooling:

When room temperature
is approx. 27°C or higher

Dehumidifying:

When room temperature
is between approx. 23°C
and 27°C

The fan speed is automati-

A7

cally determined.

The room temperature

Q8

cannot be controlled at an
automatic operation.

It is automatically set as

A8

follows.
At cooling: Set at 27°C
At dehumidifying:

Set slightly
lower than room
temperature

The room temperature
setting can be raised 3°C by

V

“ ” or lowered 3°C by “ V ”.

When changing the room
temperature setting in an
automatic operation, the next
automatic operation mode is
determined by new room
temperature setting.
If, for example, the room
temperature setting is 2°C
lowered for example, the
operation mode is as follows.

Cooling : When room

temperature is
approx. 25°C or
higher

Dehumidifying :

When room
temperature is
between approx.
21°C and 25°C

– 56 –

Common, etc.

There is a difference

Q9

between the room
temperature setting and
actual room temperature.

What will happen if the time

Q10

setting is changed while in a
timer operation?

In the “Automatic fan speed”

Q11

mode, the indoor fan
changes to MED and LO fan
speed.

There may be a difference

A9

between the room
temperature setting and
actual room temperature on
account of the room
structure, air flow, etc.
If there is a difference from
the room temperature, adjust
the set temperature to keep
living space at a comfortable
temperature.

A timer operation is

A10

performed until the time after
changing the time setting.

It is not a trouble. The cold

A11

wind preventive function
operates.

Set the temporary switch
normal.

Nice temperature reservation

In case of “ON” timer, the operation does not

Q12

start at a preprogrammed time but a little
earlier.

The time to start an operation is irregular

Q13

while preprogramming at the same time.

The “Nice temperature reservation” functions.

A12

The operation starts earlier so the room
temperature will be as set at a programmed
time.
The operation starts at most 60 minutes before
a preprogrammed time.

The “Nice temperature reservation” operates.

A13

The starting time depends on the room load.

– 57 –

Wireless remote controller

1) When the “Automatic”

Q14

operation mode is
selected, “Automatic”
does not change by
pressing the fan speed
select button.

2) The room temperature
setting is not displayed.

3) Pressing the room
temperature control button
develops transmit mark
“ ” and sounds a
receive sound but does
not display the room
temperature setting.

1) When the operation

A14

mode is “Automatic”, the
fan speed is
automatically fixed to
“Automatic”.

2) At an “Automatic”
operation, the room
temperature setting is not
displayed.
The room temperature is
automatically set as
follows.

At cooling
Set at 27°C.
At dehumidifying
Set to a temperature

slightly lower than the
room temperature.

3) At an “Automatic”
operation, the room
temperature setting is not
displayed.
However, every pressing

V

“ ” or “ V ” button
changes 1°C within the
range of:
27±3°C when cooling.

The room temperature
sensing thermistor in the
indoor unit detects the room
temperature and, according
to the particular temperature,
automatically performs
“Cooling” or “Dehumidifying”
operation.
The value indicated not at an
“Automatic” but manual
operation is not the actual
room temperature but the
room temperature setting.

When the room temperature

Q15

setting is “16”, pressing the
room temperature control
button “ V ” causes no
transmission. At “32”,
pressing “ ” causes no
transmission either.

The timer cannot be set.

Q16

The current time disap-

Q17

pears soon.

The room temperature is

A15

settable within the range of
16 - 32 and not beyond.

V

Is the current time set?

A16

The timer cannot be set
unless the clock is adjusted
correctly.

The current time disappears

A17

soon and the timer settting
indication takes a
precedence.

When setting the current time,
its indication blinks for
approximately 3 minutes.

– 58 –

In spite of timer “Preprogram”,

Q18

the time setting is
extinguished.

Isn’t the time over the pre-

A18

programmed time?
As soon as the prepro­grammed time is reached, the
time setting disappears.

After selecting a

Q19

“Dehumidifying” operation
mode, the fan speed mode
remains “LO” fan speed”.

At a “Dehumidifying”

A19

operation, the “LO” fan speed”
is forcibly selected.

– 59 –

TROUBLE-SHOOTING

No cooling

Operates by setting the service
switch to forced cooling?

YES

Return the service switch to
"Normal".

Set the remote controller to an
operation status and press the ON/
OFF button.

Is the level LO (approx. 0.5V)

NO

15

power

between driver IC701 pin
relay and 0V?

No operation at all.
*1

Check the following parts and replace if faulty

NO

2) Varistor

4) Thermal fuse for
therminal board

5) Thermal fuse for
Terminal board

Power relay abnormal

YES
Compressor does not turn at LO.

Remove and check the continuity across.1) Current fuse
Check whether the appearance is blackish or not.

The resistance must be infinite. *2

Check the continuity between contacts.3) Power switch

(96°C) Continuity across

also check the fan motor and capacitor.

(102°C) Continuity across

check the electric parts and replace if abnormal.

*2 Before checking the varistor, detach a terminal.

*1 Before using the service switch,

disengage and engage the plug. Do not
operate the remote controller.

∑ If there is no continuity,

∑ If there is no continuity,

Replace Power relay

Is the level LO (approx. 0.5V)

NO

NO

16

stick

between driver IC701 pin
relay and 0V?

Is voltage normal between blue wire
and red wire of Indoor DC Fan
Motor.

YES

YES

Stick relay abnormal

Indoor fan motor or

Q904 abnormal

Replace Stick relay

– 60 –

Is voltage normal (approx. 280 ~
380V) at out put side of the DB201?

NO

Check the circuit board of

control board

YES

Check the circuit board inside parts.
When checking, carry out a self
diagnosis by indoor indicator lamp.

*4 Wait for 3 minutes before forced

re-operation by the service switch.

*3 Refer to below table.

Blue wire – red wire of FAN MOTOR (V)

Fan Speed

RAS-18CP5

HI

MED

LO

32.6

28.0

24.0

Replace faulty part

RAS-24CP5

32.6

28.0

24.0

– 61 –

Timer-Lamp, break-down checking in blinking sign.

Check the break-down factor from the frequency of timer-lamp blinking.

No. Mode of Timer-Lamp blinking Indication Factor Estimated Break-Down Part

Force cooling operation

5

1

sec.

––––––– 2 times

Unit is under forcible operation or
under balancing after forcible

Check force cooling switch at
indoor electrical.

operation.

DC Fan motor - over flow of

5

2

–– –– 10 times

sec.

electricity

Indoor - DC Fan motor has over
flow of electricity.

IC 401 Data read wrongly

5

3

––– 13 times

sec.

In case that data read from IC401
is wrong.

Heat exchanger thermistor

(1) Indoor - Fan is locked.
(2) Indoor - Fan motor damage.
(3) Indoor - control circuit board.

IC401 data is not in order.

(1) Thermistor

error

4

5

sec.

––– 14 times

Heat exchanger thermistor open

(2) Indoor - control circuit board.

or short-circuit detected.

Room thermistor error

5

5

–– –– 15 times

sec.

Room thermistor error open or
short-circuit detected.

( –– 0.5 second on, 0.5 second off.)

CAUTION

!

Remote control is disabled while the Timer lamp is flashing.
To check operation, turn off the power switch and turn it on again.

(1) Thermistor
(2) Indoor - control circuit board.

– 62 –

PARTS LIST AND DIAGRAM
INDOOR UNIT

MODEL : RAS-18CP5/RAS-24CP5

7

8

45

2

1

9

10

14

15

12

13

6

19

3

20

11

24

23

25

16

17

– 63 –

18

22

21

26

MODEL RAS-18CP5

NO.

1 PMRAS-51CHA1 001 1 CABINET
2 PMRAS-40CNH2 023 1 MOUNTING PLATE
3 PMRAS-51CHA1 002 1 FAN MOTOR 20W
4 PMRAS-51CHA1 003 1 TANGENTIAL FLOW FAN
5 PMRAS-25CNH2 005 1 P-BEARING ASSY
6 PMRAS-51CHA1 004 1 FAN MOTOR BASE
7 PMRAS-51CHA1 005 1 CYCLE ASSY
8 PMRAS-51CHA1 020 1 FAN COVER

9 PMRAS-40CNH2 025 1 PIPE SUPPORT
10 PMRAS-18CH1 002 1 DRAIN PAN ASSY
11 PMRAS-51CHA1 008 1 AUTO SWEEP MOTOR
12 PMRAS-18CH1 001 1 P.W.B (LED)
13 PMRAS-18CH1 003 1 FRONT COVER ASSY

PART N0.

RAS-18CP5

Q’TY / UNIT

PARTS NAME

14 PMRAS-18CH1 004 1 FRONT PANEL
15 PMRAS-25CNH2 019 3 CAP
16 PMRAS-51CHA1 010 2 FILTER
17 PMRAS-51CA1 002 1 REMOTE CONTROL ASSY
18 PMRAS-10C3M 003 1 REMOTE CONTROL SUPPORT
19 PMRAS-51CHA1 015 1 THERMISTOR SUPPORT
20 PMRAS-51CHA1 016 1 THERMISTOR
21 PMRAS-18CP2R 002 1 POWER SWITCH
22 PMRAS-18CP5 001 1 P.W.B (MAIN)
23 PMRAS-51CHA1 013 1 P.W.B (POWER SW SUPPLY)
24 PMRAS-51CHA1 017 1 TERMINAL BOARD (FUSE)
25 PMRAS-51CHA1 018 1 THERM-FUSE FOR P.C.B
26 PMRAS-51CHA1 019 1 P.W.B (RECEIVER)

– 64 –

MODEL RAS-24CP5

NO.

1 PMRAS-51CHA1 001 1 CABINET
2 PMRAS-40CNH2 023 1 MOUNTING PLATE
3 PMRAS-51CHA1 002 1 FAN MOTOR 20W
4 PMRAS-51CHA1 003 1 TANGENTIAL FLOW FAN
5 PMRAS-25CNH2 005 1 P-BEARING ASSY
6 PMRAS-51CHA1 004 1 FAN MOTOR BASE
7 PMRAS-24CP5 002 1 CYCLE ASSY
8 PMRAS-51CHA1 020 1 FAN COVER

9 PMRAS-40CNH2 025 1 PIPE SUPPORT
10 PMRAS-18CH1 002 1 DRAIN PAN ASSY
11 PMRAS-51CHA1 008 1 AUTO SWEEP MOTOR
12 PMRAS-18CH1 001 1 P.W.B (LED)
13 PMRAS-18CH1 003 1 FRONT COVER ASSY

PART N0.

RAS-24CP5

Q’TY / UNIT

PARTS NAME

14 PMRAS-18CH1 004 1 FRONT PANEL
15 PMRAS-25CNH2 019 3 CAP
16 PMRAS-51CHA1 010 2 FILTER
17 PMRAS-51CA1 002 1 REMOTE CONTROL ASSY
18 PMRAS-10C3M 003 1 REMOTE CONTROL SUPPORT
19 PMRAS-40CNH2 026 1 THERMISTOR SUPPORT
20 PMRAS-51CHA1 016 1 THERMISTOR
21 PMRAS-18CP2R 002 1 POWER SWITCH
22 PMRAS-24CP5 001 1 P.W.B (MAIN)
23 PMRAS-51CHA1 013 1 P.W.B (POWER SW SUPPLY)
24 PMRAS-51CHA1 017 1 TERMINAL BOARD (FUSE)
25 PMRAS-51CHA1 018 1 THERM-FUSE FOR P.C.B
26 PMRAS-51CHA1 019 1 P.W.B (RECEIVER)

– 65 –

PARTS LIST AND DIAGRAM
OUTDOOR UNIT

MODEL : RAC-18CP5

18

17

14

16

12

11

10

6

15

8

9

1

7

19

2

20

4

5

3

– 66 –

PARTS LIST AND DIAGRAM
OUTDOOR UNIT

MODEL : RAC-24CP5

13

14

16

18

17

12

15

8

9

7

11

10

6

19

2

1

4

3

5

– 67 –

MODEL RAC-18CP5

NO.

1 PMRAC-51CA1 910 1 BASE
2 PMRAC-18CVP3 901 1 COMPRESSOR
3 PMRAC-5142CHV1 902 3 COMPRESSOR RUBBER
4 PMRAC-51CA1 904 1 VALVE (2S)
5 PMRAC-51CHA1 909 1 VALVE (4S)
6 PMRAC-51CA1 902 1 CONDENSER
7 PMRAC-51CA1 905 1 FAN MOTOR SUPPORT
8 PMRAC-18CP5 902 1 FAN MOTOR

9 PMRAC-25CNH2 902 1 PROPELLER FAN
10 PMRAC-63CA1 902 1 TERMINAL BOARD (2P)
11 PMRAC-18CH1 902 1 COMPRESSOR CAPACITOR
12 PMRAC-14CH1 901 1 FAN MOTOR CAPACITOR
14 PMRAC-51CA1 901 1 CABINET

PART N0.

RAC-18CP5

Q’TY / UNIT

PARTS NAME

15 PMRAC-09CHA1 903 1 GRILL ASSY
16 PMRAC-51CA1 907 1 SIDE PLATE (R)
17 PMRAC-51CA1 908 1 NET
18 PMRAC-51CA1 909 1 TOP COVER
19 PMRAC-18CH1 904 1 OVERLOAD RELAY COVER
20 PMRAC-18CP5 901 1 STRAINER (COND.)

– 68 –

MODEL RAC-24CP5

NO.

1 PMRAC-18CH1 906 1 BASE
2 PMRAC-24CP5 901 1 COMPRESSOR
3 PMRAC-5142CHV1 902 3 COMPRESSOR RUBBER
4 PMRAC-51CHA1 908 1 VALVE (2S)
5 PMRAC-24CP5 909 1 VALVE (5S)
6 PMRAC-24CP5 907 1 CONDENSER
7 PMRAC-24CP5 903 1 FAN MOTOR SUPPORT
8 PMRAC-24CP5 902 1 FAN MOTOR 40W

9 PMRAC-40CNH2 917 1 PROPELLER FAN
10 PMRAC-63CA1 902 1 TERMINAL BOARD (2P)
11 PMRAC-24CP5 906 1 COMPRESSOR CAPACITOR
12 PMRAC-14CH1 901 1 CAPACITOR 2.5µF 400V
13 PMRAC-40CNH2 926 1 SIDE PLATE (L)

PART N0.

RAC-24CP5

Q’TY / UNIT

PARTS NAME

14 PMRAC-18CH1 903 1 CABINET
15 PMRAC-51CHA1 907 1 GRILL ASSY
16 PMRAC-24CP5 908 1 SIDE PLATE (R)
17 PMRAC-24CP5 904 1 NET
18 PMRAC-24CP5 905 1 TOP COVER
20 PMRAC-63CHA1 911 1 PRESSURE VALVE
21 PMRAC-63CA1 903 1 STRAINER (COND.)

– 69 –

RAS-18CP5 / RAC-18CP5

PM NO. 0169E

RAS-24CP5 / RAC-24CP5

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