Hitachi RAF-25RXB, RAC-25FXB, RAF-35RXB, RAF-50RXB, RAC-50FXB Service Manual

TC

SERVICE MANUAL

TECHNICAL INFORMATION

REFER TO THE FOUNDATION MANUAL

ROOM AIR CONDITIONER

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

FOR SERVICE PERSONNEL ONLY

NO. 0842E

RAF-35RXB/RAC-35FXB RAF-50RXB/RAC-50FXB

RAF-25RXB/RAC-25FXB

SPECIFICATIONS

INDOOR UNIT + OUTDOOR UNIT

FEBRUARY 2015 Hitachi Appliances, Inc.

※After installation

CONTENTS

SPECIFICATIONS---------------------------------------------------- 1−1

HOW TO USE---------------------------------------------------------- 2−1

CONSTRUCTION AND DIMENSIONAL DIAGRAM---------- 3−1

MAIN PARTS COMPONENT--------------------------------------- 4−1

WIRING DIAGRAM--------------------------------------------------- 5−1

CIRCUIT DIAGRAM-------------------------------------------------- 6−1

BLOCK DIAGRAM---------------------------------------------------- 7−1

BASIC MODE---------------------------------------------------------- 8−1

REFRIGERATING CYCLE DIAGRAM -------------------------- 9−1

PROCEDURE FOR DISASSEMBLY AND REASSEMBLY

----- 10−1

DESCRIPTION OF MAIN CIRCUIT OPERATION------------ 11−1

SERVICE CALL Q & A----------------------------------------------- 12−1

TROUBLE SHOOTING---------------------------------------------- 13−1

VARIOUS SETTINGS------------------------------------------------ 14−1

PARTS LIST AND DIAGRAM-------------------------------------- 15−1

INDOOR UNIT

OUTDOOR UNIT

RAC-50FXB

RAC-35FXB

RAC-25FXB

RAF-25RXB RAF-35RXB RAF-50RXB

INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT

RAF-25RXB RAC-25FXB RAF-35RXB RAC-35FXB RAF-50RXB RAC-50FXB

(KW)

(B.T.U./h)

750

590

215

15

750(+65)

548

288(+27.5)

34

W

H

D

MODEL

POWER SOURCE

TOTAL INPUT (W)

TOTAL AMPERES (A)

CAPACITY

(KW)

(B.T.U./h)

TOTAL INPUT (W)

TOTAL AMPERES (A)

CAPACITY

COOLING

HEATING

DIMENSIONS (mm)

NET WEIGHT (Kg)

TYPE

DC INVERTER

1 PHASE, 50HZ, 220-230V 1 PHASE, 50HZ, 220-230V 1 PHASE, 50HZ, 220-230V

580(155-1,180)

3.11-2.97

2.50(0.90-3.10)

8,530(3,070-10,580)

790(115-1,120)

3.99-3.82

3.4(0.9-4.4)

11,600(3,070-15,010)

750

590

215

15

750(+65)

548

288(+27.5)

34

1,020(155-1,300)

4.80-4.67

3.50(0.90-4.00)

11,940(3,070-13,650)

1,220(115-1,300)

5.84-5.58

4.5(0.9-5.0)

15,350(3,070-17,060)

750

590

215

15

800(+63)

736

350(+35.5)

49.5

1,560(155-1,950)

7.16-6.85

5.00(0.90-5.20)

17,060(3,070-17,740)

1,780(115-2,100)

8.17-7.82

6.5(0.9-8.1)

22,180(3,070-27,640)

1. In order to disassemble and repair the

unit in question, be sure to disconnect the

power cord plug from the power outlet

before starting the work.

2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit,

and the replacement must be effected in correct manner according to the instructions in the Service

Manual of the unit.

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 the 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 occurrence 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 1MΩ 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 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 after reinforced or

at a new location.

10. Any inflammable object must not 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.

Spray

gasoline

gasbombe

thinner

1. SAFETY DURING REPAIR WORK

If the contacts of electrical

parts are defective, replace

the electrical parts without

trying to repair them

1

2

3

4

5

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

1. Scope

The standards provide for items to be generally observed in carrying and handling semiconductors in

relative manufactures during maintenance and handling thereof. (They apply the same to handling of

abnormal goods such as rejected goods being returned.)

2. Object parts

(1) Microcomputer

(2) Integrated circuits (I.C.)

(3) Field effective transistor (F.E.T.)

(4) P.C. boards or the like to which the parts mentioned in (1) and (2) of this paragraph are equipped.

3. Items to be observed in handling

(1) Use a conductive container for carrying and storing of parts. (Even rejected goods should be handled in

the same way.)

(2) When any part is handled uncovered (in counting, packing and the like), the handling person must

always use himself as a body earth. (Make yourself a body earth by passing one M ohm earth

resistance through a ring or bracelet.)

(3) Be careful not to touch the parts with your clothing when you hold a part even if a body earth is

being taken.

(4) Be sure to place a part on a metal plate with grounding.

(5) Be careful not to fail to turn off power when you repair the printed circuit board. At the same time,

try to repair the printed circuit board on a grounded metal plate.

HIT

ACH

I IC40

1TH1 ,

188UV

Fig. 1 Conductive container

A conductive polyvinyl bag

IC

Conductive sponge

Fig. 2 Body earth

Body earth (Elimik conductive band)

Clip for connection with

a grounding wire

1MΩ

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

Fig.4 Grounding a solder iron

Use a high insulation mode (100V, 10MΩ 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 short circuit a load circuit or the like.

Bare copper wire (for body earth)

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

Working table

Resistor 1MΩ (1/2W)

Earth wire

Staple

Fig.3 Grounding of the working table

soldering iron

Grounding wire

Screw stop at the screwed

part using a rag plate

1.

In quiet or stop operation, slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally, but this noise is not abnormal for the operation.

2. When it thunders near by, it is recommend to stop the operation and turn off the circuit break er for safety.

3. In the event of power failure,the room air conditioner will restare automatically in the previously mode once the power is restored. In the event of power failure during TIMER operation, the room air comditioner will not start automatically. Re-press ON/OFF button after 3 minutes from when the unit off or power recovery.

4. If the room air conditioner is stopped by adjusting thermostat, or missoperation, and re-start in a moment, there is occasion that the cooling and heating operation does not start for 3 minutes, it is not abnormal and this is the result of the operation of IC delay circuit. This IC delay circuit ensures that there is no danger of blowing fuse or damaging parts even if operation is restarted accidentally.

5. This room air conditioner should not be used at the cooling operation when the outside temperature is below -10°C (14°F).

6. This room air conditioner (the reverse cycle) should not be used when the outside temperature is below –15°C (5°F). If the reverse cycle is used under this condition, the outside heat exchanger is frosted and efficiency falls.

7. When the outside heat exchanger is frosted, the frost is melted by operating the hot gas system, it is not trouble that at this time fan stops and the vapour may rise from the outside heat exchanger.

CAUTION

selected

This䚷manualdescribesonlypointsthatdifferfrom RAMͲ33NP2B(PMNo.0581E) RAMͲ40NP2B(PMNo.0582E) RAMͲ53NP2B,RAMͲ53NP3B(PMNo.0583E) RAMͲ68NP3B(PMNo.0584E) RAMͲ70NP4B(PMNo.0585E) RAMͲ90NP5B(PMNo.0586E) RAMͲ110NP6B(PMNo.0587E) foritemsnotdescribedinthismanual.

Combinationtable

RAFͲ25RXB RAFͲ35RXB RAFͲ50RXB RACͲ25FXB RACͲ35FXB RACͲ50FXB

RAMͲ33NP2B

o ͲͲ

RAMͲ40NP2B

oo Ͳ

RAMͲ53NP2B

ooo

RAMͲ53NP3B

ooo

RAMͲ68NP3B

ooo

RAMͲ70NP4B

ooo

RAMͲ90NP5B

ooo

RAMͲ110NP6B

ooo

Indoorunit

Singleoutdoorunit

Multi

outdoorunit

1ー1

SPECIFICATIONS

MODEL

FAN MOTOR

FAN MOTOR CAPACITOR

FAN MOTOR PROTECTOR

COMPRESSOR

COMPRESSOR MOTOR CAPACITOR

OVERLOAD PROTECTOR

OVERHEAT PROTECTOR

FUSE (for MICROPROCESSOR)

POWER RELAY

POWER SWITCH

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

NO

YES

G4A-1A

NO

YES

YES(IC)

NO

WITHOUT REFRIGERANT BECAUSE

COUPLING IS FLARE TYPE.

UNI T

PIPES

MAX. 30m

MIN.3m

MAX. 20m

MIN.3m

REFRIGERANT CHARGING VOLUME (Refrigerant 410A)

NO

–

NO

YES

NO

YES(IC)

YES

----------

NO

ASG133CDNB7AT

870g 1400g

ASD084SFNA7JK1

RAF-25RXB RAF-35RXB RAF-50RXB

RAC-50FXBRAC-35FXBRAC-25FXB

47W (DC120~380V)

870g

30W (DC325V)

3.15A

15A, 2A, 3A, 3.15A

25A, 2A, 3A, 3.15A

450NR

YES

450NR, ERZVA431

R

YES

YES(INTERNAL)

1ー2

Figure showing the installation of lndoor and Outdoor unit

MODEL RAF-25RXB/RAC-25FXB RAF-35RXB/RAC-35FXB

The refrigerating machine oil is easily affected by moisture. Use caution to prevent water from entering the cycle. The difference in height between the indoor and outdoor unit should be kept below 10m. The connecting pipe, no matter big or small, should all be insulated with insulation pipe and then wrapped with vinyl tape. (The insulator will deteriorate if it is not wrapped with tape).

The connection of insulated drain hose.

Inner diameter 16mm

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

above 100mm

above 300mm

above 50mm

give clearance as wide as possible

above

200mm

above 50 mm when installed on the ceiling of balcony

above 200mm

Maximum pipe length 20m

Minimum pipe length 3m

Plug

Sheet

Hanger

Be sure to completely seal any gap with putty.

Drain pipe Must be installed separately. Insulate indoor part of pipe to prevent condensation.

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

Above 100mm

Above 150mm

Above 200mm

Bush

When mounting on a wall

(up to 150~500 mm from the floor surface)

(For example:wall instalation)

1ー3

Figure showing the installation of lndoor and Outdoor unit

The refrigerating machine oil is easily affected by moisture. Use caution to prevent water from entering the cycle. The difference in height between the indoor and outdoor unit should be kept below 10m. The connecting pipe, no matter big or small, should all be insulated with insulation pipe and then wrapped with vinyl tape. (The insulator will deteriorate if it is not wrapped with tape).

The connection of insulated drain hose.

Inner diameter 16mm

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

Maximum pipe length 30m

Minimum pipe length 3m

Plug

above 200mm

above

200mm

give clearance as wide as possible

above 300mm

above 700mm

above 150mm

Sheet

Hanger

Be sure to completely seal any gap with putty.

Drain pipe Must be installed separately. Insulate indoor part of pipe to prevent condensation.

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

Above 100mm

Above 150mm

Above 200mm

Bush

When mounting on a wall

(up to 150~500 mm from the floor surface)

(For example:wall instalation)

MODEL RAF-50RXB/RAC-50FXB

– 1 –

Remote Controller Manual

Remote Controller manual Page 1~28

To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.

MODEL

RAR-6N4

– 2 –

PREPARATION BEFORE OPERATION

■ To install the batteries

■ To fix the remote controller holder to the wall

1. Slide the cover to take it off.

2. Install two dry batteries AAA.LR03 (alkaline).

The direction of the batteries should match the

marks in the case.

3. Replace the cover at its original position.

1. Choose a place from where the signals can reach the unit.

2. Fix the remote controller holder to a wall, a pillar or similar

location with the provided screws.

3. Place the remote controller in the remote controller holder.

NOTE

Notes on batteries

● When replacing the batteries, use batteries of the same

type, and replace both old batteries together.

● When the system is not used for a long time, take the

batteries out.

● The batteries will last for approximately 1 year. However, if

the remote controller display begins to fade and degradation

of reception performance occurs within a year, replace both

batteries with new size AAA.LR03 (alkaline).

● The attached batteries are provided for the initial use of

the system.

The usable period of the batteries may be short depending

on the manufactured date of the air conditioner.

Notes on the remote controller

● Never expose the remote controller to direct sunlight.

● Dust on the signal transmitter or receiver will reduce the

sensitivity. Wipe off dust with soft cloth.

● Signal communication may be disabled if an electronic-

starter-type Û uorescent lamp (such as inverter-type lamps)

is in the room. Consult the shop if that is the case.

● If the remote controller signals happen to operate another

appliance, move that appliance to somewhere else, or

consult the service shop.

● When the remote controller is not in use, please close the

slide cover to prevent failure.

Remote controller

Screws

Remote

controller holder

HOW TO USE

MODEL RAF-25RXB / RAC-25FXB, RAF-35RXB / RAC-35FXB, RAF-50RXB / RAC-50FXB

2ー1

– 3 –

ENGLISH

PREPARATION BEFORE OPERATION

■ To set calendar and clock

1. Press (RESET) button when Ú rst time setting.

"Year" blinks.

2. Press

(TIME) button to set the current year.

3. Press

(CLOCK) button. "Day" and "Month"

blink.

4. Press

(TIME) button to set the current day and

month.

5. Press

(CLOCK) button. "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 need to be set again after changing

batteries.

After changing the batteries,

1. Press (RESET) button.

2. Direct remote controller 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:

●  When there is a power failure.

●  When breaker is OFF by user (unit is not in STANDBY

MODE).

NOTE

Note on setting the calendar and clock.

● If the calendar and clock are not set, the ON-timer, OFF-timer and Weekly Timer cannot be set.

● If the calendar and clock are not set correctly, the ON-timer, OFF-timer and Weekly Timer will not

operate correctly.

● When the ON-timer, OFF-timer and Weekly Timer are set, the calendar and clock cannot be changed.

If there is a need to change the calendar and clock, ON-timer, OFF-timer and Weekly Timer need to

be cancelled.

– 4 –

NAMES AND FUNCTIONS OF REMOTE CONTROLLER

REMOTE CONTROLLER

● 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 Ú xed on a wall using the Ú xture provided. Before Ú xing it, make sure the indoor unit can

be controlled from the remote controller.

● Handle the remote controller with care. Dropping it or getting it wet may compromise its signal transmission

capability.

● After new batteries are inserted into the remote controller, the unit will initially require approximately 10

seconds to respond to commands and operate.

● When remote controller is not in use for about 3 minutes during OFF condition, indicated by on the

display, the LCD will turn off.

● During clock setting, the LCD will turn off about 10 minutes later if the remote controller is not in use.

● When pressing any button, the LCD will turn on.

● The LCD will not turn off during TIMER setting.

Signal Transmitting/Receiving

Window

Point this window towards the

indoor unit when controlling it.

Sensor

A temperature sensor inside the

remote controller senses ambient

temperature around the remote-

controller.

Display

This indicates the room temperature

selected, current time, timer status,

function and airÛ ow 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.

ECO Button

Use this button to set the ECO

mode. (

p. 13)

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 airÛ ow rate will change from

(AUTO) (HIGH)

(MED) (LOW)

(SILENT) (This button allows

selection of optimal or preferred fan

speed for each operation mode).

Transmission sign

The transmission sign lights up

when a signal is sent.

2ー2

– 5 –

ENGLISH

MODE SELECTOR

AUTO

HEAT

DEHUMIDIFY

COOL

FAN

FAN SPEED

AUTO

SILENT

LOW

MED

HIGH

START / STOP

ECO

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 Û oor, 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 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. ( p. 11)

INFORMATION Button

(

p. 26)

ONE TOUCH CLEAN Button

(

p. 16)

ON / OFF TIMER setting Buttons

(

p. 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. (

(

p. 12)

p. 10)

(

p. 10)

WEEKLY TIMER setting Buttons

(

p. 20)

LEAVE HOME Button

(

p. 15)

NAMES AND FUNCTIONS OF REMOTE CONTROLLER

ECO SLEEP TIMER Button

Use this button to set the ECO

sleep timer. (

p. 18)

FAN

POWERFUL

SILENT

INFO

SLEEP TIMER

AUTO SWING (VERTICAL)

LEAVE HOME

CLEAN

DAY

PROGRAM NO.

ON / OFF TIMER

TIMEOKDELETE

COPY / PASTE

CANCEL

SEND

CLOCK

EXTENDED AIRFLOW button

Pushes air out further for an

extended AIRÛow.

EXTENDED AIRFLOW button

AUTO SWING (Vertical) Button

Controls the angle of the

horizontal air deÛ ector.

p. 10)

– 6 –

AUTOMATIC OPERATION

The device will automatically determine the mode of operation, HEAT or COOL depending on the current

room temperature. The selected mode of operation will change when the room temperature varies.

However, the mode of operation will not change when indoor unit is connected to multi type outdoor unit.

VARIOUS FUNCTIONS

■ Auto Restart Control

● If there is a power failure, operation will be automatically restarted when the power is resumed with previous operation

mode and airÛ ow direction.

(As the operation is not stopped by remote controller.)

● 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 airÛ ow 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.

■ 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 MODE selector button so that the display indicates the

(AUTO) mode of operation.

● 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.

● If the mode automatically selected by the unit is not satisfactory,

manually change the mode setting (HEAT, DEHUMIDIFY, COOL

or FAN).

Press the (FAN SPEED) button to select AUTO, HIGH, MED, LOW

or SILENT.

Press the

(START/STOP) button.

Operation starts with a beep.

Press the button again to stop operation.

Set the desired room temperature with the TEMPERATURE buttons

(the display indicates the setting).

The temperature setting and the actual room temperature may vary

depending on conditions.

Temperature range can be set between 16°C and 32°C.

START

STOP

1

2

3

Set the desired FAN SPEED with the (FAN SPEED) button (the

display indicates the setting).

  (AUTO)  (HIGH) (MED)

(SILENT) (LOW)

2ー3

– 7 –

ENGLISH

HEATING OPERATION

● Use the device for heating when the outdoor temperature is under 21°C.

When it is too warm (over 21°C), the heating function may not work in order to protect the device.

● In order to maintain reliability of the device, please use this device when outdoor temperature is above

–15°C.

Press the MODE selector button so that the display indicates

(HEAT).

Set the desired FAN SPEED with the (FAN SPEED) button

(the display indicates the setting).

  (AUTO)  (HIGH) (MED)

(SILENT) (LOW)

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.

Temperature range can be set between 16°C and 32°C.

Press the

(START/STOP) button. Heating 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.

■ During AUTO fan, the fan speed automatically changes as below:

● When the difference between room temperature and setting temperature

is large, fan starts to run at HI speed.

● After room temperature reaches the preset temperature, fan speed

will be changed to lower speed to obtain optimum room temperature

condition for natural healthy heating.

START

STOP

Defrosting will be performed about once an hour when frost forms on the heat exchange of the outdoor unit,

for 5~10 minutes each time.

During defrosting operation, the operation lamp blinks in a cycle of 3 seconds on and 0.5 second off.

The maximum time for defrosting is 20 minutes.

However, if the indoor unit is connected to multi type outdoor unit, the maximum time for defrosting is 15

minutes.

(If the piping length used is longer than usual, frost is likely to form.)

1

2

3

Defrosting

– 8 –

DEHUMIDIFYING OPERATION

■ 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 preset room temperature may not be reached depending on the number of people present in the room

or other room conditions.

Set the desired room temperature with the ROOM

TEMPERATURE setting buttons (the display indicates the

setting).

The range of Þ# is recommended as the

room temperature for dehumidifying.

Temperature range can be set between 16°#

and #

Press the (START/STOP) button. Dehumidifying 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.

START

STOP

Press the MODE selector button so that the display

indicates (DEHUMIDIFY).

The fan speed is set at LOW.

Press (FAN SPEED) button to select SILENT or LOW fan

speed.

5SETHEDEVICEFORDEHUMIDIFYINGWHENTHEROOMTEMPERATUREISOVER#

7HENITISUNDER#THEDEHUMIDIFYINGFUNCTIONWILLNOTWORK

1

2

2ー4

– 9 –

ENGLISH

COOLING OPERATION

Use the device for cooling when the outdoor temperature is -10~ 43°C.

If indoors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.

Press the MODE selector button so that the display indicates

(COOL).

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

only have to press the

(START/STOP) button next time.

■ During AUTO fan, the fan speed automatically changes as below:

● When the difference between room temperature and setting tem-

perature is large, fan starts to run at HI speed.

● After room temperature reaches the preset temperature, fan speed

will be changed to lower speed to obtain optimum room temperature

condition for natural healthy cooling.

START

STOP

1

2

3

Set the desired FAN SPEED with the (FAN SPEED) button (the

display indicates the setting).

  (AUTO)  (HIGH) (MED)

(SILENT) (LOW)

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.

Temperature range can be set between 16°C and 32°C

Press the

(START/STOP) button. Cooling operation starts with a

beep. Press the button again to stop operation. The cooling function

does not start if the temperature setting is higher than the current

room temperature (even though the (OPERATION) lamp lights).

The cooling function will start as soon as user set the temperature

below the current room temperature.

– 10 –

FAN OPERATION

User can use the device simply as an air circulator.

START

STOP

1

2

Press the MODE selector so that the display indicates

(FAN).

Set the desired FAN SPEED with the (FAN SPEED) button (the

display indicates the setting).

  (HIGH) (MED) (LOW) (SILENT)

Press the (START/STOP) button. Fan operation starts with

a beep. Press the button again to stop operation.

EXTENDED AIRFLOW OPERATION

To start Extended Airﬂow operation

Press (EXTENDED AIRFLOW) button during operation.

 “

” is displayed on the LCD.

The airﬂow direction will automatically set according to the type of operation and the fan speed will

change to allow air to blow further. (During cooling operation, fan speed will retur n to the original

position after 3 hours.)

s If the

(EXTENDED AIRFLOW) button is pressed while the AUTO SWING mode is set, the

AUTO SWING mode is cancelled and the EXTENDED AIRFLOW mode is set.

s If the

(AUTO SWING) button is pressed while the EXTENDED AIRFLOW mode is set, the

EXTENDED AIRFLOW mode is cancelled and the AUTO SWING mode is set.

s If the

(EXTENDED AIRFLOW) button is pressed when the horizontal air deﬂector stops at

your preferred angle, the deﬂector will change to EXTENED AIRFLOW.

s Press

(EXTENDED AIRFLOW) button to lower the room temperature quickly when the

temperature is high during the cooling operation.

NOTE

 Dur ing cooling and dehumidi-

fying operation, do not keep

the deﬂectors swinging or in

the lower position (in the case

of vertical auto swing) for a

long time. It may cause dew

condensation on the deﬂectors.

AUTO SWING OPERATION

VERTICAL SWING

To start Vertical Auto Swing

To cancel Vertical Auto Swing

Press (AUTO SWING (VERTICAL)) button. The deﬂector(s) will start to swing

up and down.



is displayed on the LCD.

Press (AUTO SWING (VERTICAL)) button again. The deﬂector(s) will stop in

the current position.



disappeared from the LCD.

To cancel Extended Airﬂow operation

Press (EXTENDED AIRFLOW) button again.

 EXTENDED AIRFLOW operation stops.

“

” disappears from LCD.

2ー5

– 11 –

ENGLISH

POWERFUL OPERATION

●By pressing (POWERFUL) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN

operation, the air conditioner performs at the maximum power.

● During POWERFUL operation, cooler or warmer air will be blown out from indoor unit for COOLING or

HEATING operation respectively.

■ To start POWERFUL operation

■ To cancel POWERFUL operation

● Press (POWERFUL) button during operation.

 “ ” is displayed on the LCD.

 POWERFUL operation ends in 20 minutes. Then the system

automatically operates with the previous settings used before

POWERFUL operation.

● Press the (START/STOP) button. Or

● Press (POWERFUL) button again.

 POWERFUL operation stops.

 “ ” disappears from the LCD.

1

NOTE

● When SLEEP mode, ECO mode, SILENT mode or LEAVE HOME mode is selected, POWERFUL

operation is cancelled.

● During POWERFUL operation, capacity of the air conditioner will not increase

– if the air conditioner is already running at maximum capacity.

– just before defrost operation (when the air conditioner is running in HEATING operation).

● After auto restart, POWERFUL operation is cancelled and previous operation shall start.

● For multi model connections, POWERFUL operation may not function depending on operation conditions.

– 12 –

SILENT OPERATION

● By pressing (SILENT) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN

operation, the fan speed will change to ultra slow.

■ To start SILENT operation

■ To cancel SILENT operation

● Press (SILENT) button during operation.

“

” is displayed on the LCD. Fan speed will be ultra slow.

● Press (START/STOP) button. Or

● Press (SILENT) button again or (FAN SPEED)

button.

Fan speed will return to previous fan speed before SILENT

operation starts.

 SILENT operation stops.

 “ ” disappears from the LCD.

1

NOTE

● When POWERFUL operation is selected, SILENT operation is cancelled. Fan speed will return to

previous fan speed before SILENT operation.

● After auto restart, SILENT operation is cancelled. Fan speed will return to previous fan speed before

SILENT operation.

● During any operation with fan speed (SILENT), if press (SILENT) button, fan speed will

not change.

2ー6

– 13 –

ENGLISH

ECO OPERATION

There are two kinds of ECO OPERATION with sensor or without sensor, depending on models.

Please refer to [Names and Functions of each part] in the unit instruction manual to verify if your unit is

equipped with a sensor and read the following instruction on ECO Operation accordingly.

● By pressing the (ECO) button during AUTO, HEATING,

DEHUMIDIFYING or COOLING operation, the air conditioner

performs the "ECO" operation.

1

■ To start ECO operation

■To cancel ECO operation

● Press (ECO) button during operation.

 “ ” is displayed on the LCD.

A beep sound is emitted from indoor unit.

 Energy saving operation will start by changing the set temperature

higher or lower automatically and reducing operation power

consumption. This function may vary based on the connected

outdoor unit.

● Press (START/STOP) button. Or

● Press (ECO) button again.

 “ ” disappears from the LCD.

A beep sound is emitted from indoor unit.

NOTE

● ECO function will not be effective when power consumption is low.

● By pressing (POWERFUL) button, ECO operation is cancelled.

● After auto restart, ECO operation is cancelled and previous operation mode shall start.

● For multi model connections, energy saving operation shall start only by changing set temperature higher

or lower automatically. However, effectiveness of ECO depends on operation conditions.

■ ECO OPERATION

ECO operation is an energy saving function by changing set temperature automatically and by limiting the

maximum power consumption value.

– 14 –

ECO OPERATION

● By pressing the (ECO) button during AUTO, HEATING,

DEHUMIDIFYING or COOLING operation, the air conditioner

performs the "ECO" operation.

1

■ To start ECO operation

■To cancel ECO operation

● Press (ECO) button during operation.

 “ ” is displayed on the LCD.

A beep sound is emitted from indoor unit and the (ECO) lamp

on the indoor unit lights up.

 The sensor starts to detect the presence of people in the room.

● Press (START/STOP) button. Or

● Press (ECO) button again.

 “ ” disappears from the LCD.

A beep sound is emitted from indoor unit and the (ECO) lamp on

the indoor unit turns off.

NOTE

● By pressing (POWERFUL) button, ECO operation is cancelled.

● After auto restart, ECO operation is cancelled and previous operation mode shall start.

■ ECO OPERATION with sensor

The sensor detects the presence of people in the room. When nobody is detected, the unit automatically starts

enegy saving operation by shifting the set temperature in two steps.

When the presence of people is not detected for 20 minutes, the set temperature is automtatically shifted for

energy saving. If nobody is in the room for 60 minutes, the set temperature is shifted further.

Cooling operation [diagram representation

for illustrative purpose only]

Heating operation [diagram representation

for illustrative purpose only]

Setting

temperature

Shift

temperature

Shift

temperature

20 minutes 60 minutes

Setting

temperature

Shift

temperature

Shift

temperature

20 minutes 60 minutes

The unit returns to normal operation when the sensor detects human movement.

2ー7

– 15 –

ENGLISH

LEAVE HOME (LH) OPERATION

Prevent the room temperature from falling too much when no one is at home. The initial setting temperature is 10°C and the

temperature range can be set between 10°C and 16°C.

This operation is able to operate by "Continuous operation" or "Day timer operation". Please use "Day timer operation" to

set the number of days up to 99 days.

■ To start LEAVE HOME operation

Option 1. Continuous operation.

 Press (LEAVE HOME) button during stop or operation.

 Room temperature is set at 10°C and heating operation starts.

Set the desired room temperature with the TEMPERATURE buttons.

Temperature range can be set between 10°C and 16°C.

 “

”, “ ”, “ ”, “ ”, “SET TEMPERATURE” is displayed

on the LCD.

Option 2. Day timer operation.

 Press (LEAVE HOME) button during stop or operation.

 Room temperature is set at 10°C and heating operation starts.

Set the desired room temperature with the TEMPERATURE buttons.

Temperature range can be set between 10°C and 16°C.

 “ ”, “ ”, “ ”, “ ”, “SET TEMPERATURE” is displayed

on the LCD.

 Set number of operation days (1 to 99 days), if needed.

Press

(TIME) button to select number of days.

Number of days blink.

* Press “

(UP)” or “ (DOWN)” to set number of days from

1 day to 99 days.

* Number of day is counted when clock indicates 0:00.

 Press (SEND) button to conÚ rm number of operation days.

Display for number of operation days will stop blinking.

 Press (CANCEL) button to reset number of operation days

or to have continuous operation.

To cancel LEAVE HOME operation

● Press (START/STOP) button. Or

● Press (LEAVE HOME) button again.

Return to previous operation mode. Or

● Change to other operation mode by pressing (MODE) button.

NOTE

● After reaching the set number of operation days for Leave Home or by pressing the (Leave Home) button again,

the unit will operate in previous mode.

● During Leave Home operation, fan speed and horizontal air deÛ ector position cannot be changed.

● By pressing (Leave Home) button, implementation of Weekly Timer or Once Timer is cancelled.

● In case of power supply shut down, after autorestart, all setting for number of days operation will be reset and unit

shall be in continuous operation.

● POWERFUL, SILENT and ECO operations are not applicable during Leave Home operation.

● For multi connection

● FAN/COOLING/DEHUMIDIFYING and Leave Home cannot operate at the same time.

The Ú rst-run unit has a priority and other units in different mode will be in standby mode.

● Heating operation can be used with Leave Home.

● When two or more rooms are set to operate Leave Home, the temperature set by Leave Home may not be

reached. It also depends on outdoor temperature.

Continuous operation

Day timer operation

1

2

1

2

123

4

3

4

– 16 –

CLEAN (ONE TOUCH CLEAN) OPERATION

Drying indoor heat exchanger after cooling operation to prevent mildew.

■ To start CLEAN operation

■ To cancel CLEAN operation

● Press (CLEAN) button when unit is OFF.

Total time taken for One Touch Clean operation is 60 minutes.

During this operation, HEATING or FAN operation shall

operate.

During one touch clean, operation lamp is blinking.

 “ ”, “ ” is displayed on the LCD.

● Press (START/STOP) button. Or

● Press (CLEAN) button again.

1

NOTE

● When CLEAN operation Ú nish, unit will switch OFF automatically.

● If Weekly Timer or Once Timer is set, there is a need to cancel those timer before operating CLEAN

function.

● For multi connections, when pressing (CLEAN) button, operation is limited to FAN operation.

● For multi connections, when one room operates CLEAN operation Ú rst, other rooms can operate

COOLING, DEHUMIDIFYING or FAN operation. However, when other rooms need to operate HEATING

operation, air conditioner will be in STANDBY mode. After CLEAN operation Ú nish, HEATING operation

will start.

2ー8

– 17 –

ENGLISH

ONCE TIMER (ON/OFF TIMER) OPERATION

The device can be set to turn off at a preset time.

1. Press

(OFF-TIMER) button. and blink on the display.

2. Set the "turn-off time" with

(TIME) button.

3. After setting, direct the remote controller towards the indoor and press

(SEND) button.

and "set time" lights up instead of blinking.

A beep sound emitted from indoor unit and the (TIMER) lamp on the

indoor unit lights up.

ON TIMER

The device will turn on at a designated time.

1. Press

(ON-TIMER) button. and blink on the display.

2. Set the "turn-on time" with

(TIME) button.

3. After setting, direct the remote controller towards the indoor and press

(SEND) button.

and "set time" light up instead of blinking.

A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor

unit lights up.

ON/OFF TIMER

● The device will turn on (off) and off (on) at the designated time.

● The switching occurs Ú rst at the preset time that comes earlier.

● The arrow mark appears on the display to indicate the sequence of switching

operations.

1. Press

(OFF-TIMER) button so that and blink on the

display.

2. Set the "turn-off" time with

(TIME) button. After setting, direct the remote

controller towards the indoor and press

(SEND) button.

3. Press

(ON-TIMER) button so that and set "turn-off" time light up.

The

and blink.

4. Set the "turn-on" time with

(TIME) button.

5. After setting, direct the remote controller towards the indoor and press

(SEND) button

and set "turn-on" time light up instead of blinking.

A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor

unit lights up.

■The timer may be used in three ways: OFF-timer, ON-timer and ON/OFF (OFF/

/.TIMER3ETTHECURRENTTIMEÚ rst because it serves as a reference.

■ To cancel Reservation

● Point the signal window of the remote controller towards the indoor unit and press (CANCEL) button.

and "ON or OFF set time" goes out with a beep and the (TIMER) lamp on the indoor unit turns off.

NOTE

● User can set only one of the OFF-timer, ON-timer or ON/OFF-timer.

● If WEEKLY TIMER already set, by setting the ONCE TIMER, ONCE TIMER operation is prioritized. When ONCE

TIMER operation is complete, WEEKLY TIMER operation will be activated.

OFF TIMER

1

– 18 –

ECO SLEEP TIMER OPERATION

The timer can be set up to a duration of 7 hours.

By pressing

(SLEEP) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation,

the unit shifts the room temperature and reduces the fan speed. It results in energy saving.

Set the current time Ú rst before operating the ECO SLEEP TIMER operation.

■ To start ECO SLEEP TIMER operation

■ To cancel ECO SLEEP TIMER operation

Press (SLEEP) button during operation.

● “ ”, “ ”, “ ”, “OFF”, off time, “ ” and number

of hour are displayed on the remote controller display.

● During ECO SLEEP TIMER operation, fan speed will be ultra

slow.

● A beep sound emitted from indoor unit and the (TIMER) lamp

on the indoor unit lights up.

Pressing (SLEEP) button repeatedly, the number of hours

will change as below:

● During ECO SLEEP TIMER operation, air conditioner will

continue to operate for the designated number of hours and

then turn off.

● When the ECO SLEEP TIMER has been set, the display on

the remote controller indicates the turn off time.

Press

(START/STOP) button.

● Room air conditioner will switch off.

Press

(SLEEP) button again until “ ”, “ ”, “ ”,

off time, “ ” and number of hour disappear from the remote

controller display.

Press

(CANCEL) button.

● A beep sound emitted from indoor unit and the (TIMER) lamp

on the indoor unit turns off.

● SLEEP TIMER operation is cancelled.

1

Example: If ECO SLEEP TIMER is

set for 1 hour at 18:00, the switch

off time will be at 19:00.

1 H 2 H 3 H 7 H

SLEEP TIMER off

2ー9

– 19 –

ENGLISH

ECO SLEEP TIMER OPERATION

■ To set ECO SLEEP TIMER and ON TIMER

■ To cancel ECO SLEEP TIMER and ON TIMER operation

The air conditioner will be turned off by ECO SLEEP TIMER and turned on by ON TIMER.

1. Set the ON TIMER.

2. Press

(SLEEP) button and set ECO SLEEP TIMER.

Direct the remote controller towards the indoor unit and press

(CANCEL) button.

● “ ”, “ ”, “ ”, “OFF”, off time, “ ”, number of hour, "ON" and ON TIMER set time disappear

from the remote controller display.

● A beep sound emitted from indoor unit and the (TIMER) lamp on the indoor unit turns off.

● ECO SLEEP TIMER and ON TIMER reservations are cancelled.

30 minutes after setting ECO SLEEP TIMER, outdoor fan speed will be reduced to lower the noise level and

to have comfort operation.

1 hour after setting ECO SLEEP TIMER, set temperature will be slightly shifted. Amount of temperature shifted

depends on type of air conditioner.

These automatic operation changes contribute to energy saving without losing comfort.

The level of energy consumption depends on outside temperature, room temperature, set temperature or air

conditioner type.

Cooling operation [diagram representation

for illustrative purpose only]

Example:

In this case, air conditioner will turn off in 2 hours (at 1:38) and it will be

turned on at 6:00 the next morning.

NOTE

● If ECO SLEEP TIMER is set when OFF TIMER or ON/OFF TIMER has been set earlier, the ECO

SLEEP TIMER becomes effective instead of the OFF TIMER or ON/OFF TIMER.

Heating operation [diagram representation for

illustrative purpose only]

Temperature

30 minutes

Outdoor fan

speed reduce

Shift

temperature

1 hour

Temperature

30 minutes

Outdoor fan

speed reduce

Shift

temperature

1 hour

– 20 –

● It is possible to select Mode A or Mode B. For each mode, up to 6 programs can be set per day. In total, a

maximum of 42 programs can be set for a week for each mode.

● If calendar and clock are not set, the reservation setting for WEEKLY TIMER cannot be set.

● If calendar and clock are not set correctly, WEEKLY TIMER will not operate correctly.

● Reservation for calendar and clock shall be set Ú rst before operating WEEKLY TIMER.

WEEKLY TIMER OPERATION

■ How to set a WEEKLY TIMER.

1. Select Mode A or Mode B

Press (WEEKLY) button. lights up. and blink on the

display. (Mode A is selected).

Press (WEEKLY) button again, and blink on the display.

(Mode B is selected).

● If no reservation has been made, ON/OFF, , appear.

● If reservation has been made, ON/OFF, , will not

appear.

2. Set a program

Press (WEEKLY) button for about 3 seconds. The selection mode

can be changed.

, day: Mon, program no. : 1, ON/OFF, setting time and setting

temperature blink on the display.

3. Select the desired day of the week

Press (DAY) button.

The day changes from Mon

Tue Wed Thu Fri Sat Sun

Mon, Tue, Wed, Thu, Fri, Sat, Sun [Full days] Mon, Tue, Wed, Thu,

Fri [weekday] Sat, Sun [weekend] Mon Tue ......

Select [Full days] for daily reservation.

Select [weekday] for Monday to Friday reservation.

Select [weekend] for Saturday and Sunday reservation.

● After reservation has been set, it is easy to check and edit at the same

time.

4. Press button to select a program number.

The number changes from 1

2 3 4 5 6 1 2 .....

● If program number has been set, follow above in order to make

changes.

1

2

Step 1 : Set the reservation schedule to the remote controller. Send the registered reservation to indoor

unit and then operate.

Step 2 : Select Mode A or Mode B and activate or deactivate WEEKLY TIMER .

Step 3 : Copy and cancel the reservation schedule.

Step 1 : Set reservation schedule to the remote controller. Send the registered

reservation to indoor unit and then operate.

3

4

2ー10

– 21 –

ENGLISH

5. Press (ON-OFF TIMER) button to select ON TIMER or OFF TIMER

reservation.

6. Press (TIME) button to set time reservation.

7. Press (TEMP or ) button to set temperature reservation.

8. Press (OK) button. The reservations are set. Day, program

number, ON reservation, setting temperature will light up. will be

continuously blinks. If reservation is not complete, settings will not be

stored in memory.

To continue with the reservation, press buttons.

Follow step 3 to 8 for reservation.

9. After all the reservations have been set, press (SEND) button

while directing the remote controller towards the indoor unit for about 3

seconds. Timer lamp on the indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.

Please ensure that the TIMER lamp lights up.

This indicates that the reservation has been stored in the indoor unit and

Timer function has been completed.

The reservation contents will appear on the remote controller display.

● If TIMER lamp on the indoor unit does not light up, press (SEND)

button while directing the remote controller towards the indoor unit for

about 3 seconds.

● CAUTION ! Do not press (CANCEL) button during reservation

setting because this will result in all reservation contents to be lost.

● The reservation contents will not stored in the indoor unit until

(SEND) button has been pressed.

5

6

7

8

9

NOTE

● Up to 6 programs can be set per day. Setting ON TIMER or OFF TIMER for each program number

can be at random. When pressing (SEND) button, the set ON TIMER or OFF TIMER for each

program number will automatically arranged so that program number 1 shall have the earliest time and

program number 6 shall have the latest time.

If the setting time is the same, Priority will be given to the latest reservation contents.

● CAUTION ! If the remote controller is left idle and (SEND) button is not pressed within 3 minutes

after reservations have been made , all current reservations will be lost.

WEEKLY TIMER OPERATION

– 22 –

■ How to select Mode A or Mode B of WEEKLY TIMER setting.

1. Press

(WEEKLY) button. and blink on the display.

(Normally Mode A will blink Ú rst).

2. Press (WEEKLY) button again. and blink on the display.

3. Select Mode A or Mode B. Press (SEND) button while directing

the remote controller towards the indoor unit for about 3 seconds. Timer

lamp on the indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.

Please ensure that the TIMER lamp lights up.

This indicates that Mode A or Mode B selection and active WEEKLY

TIMER have been conÚ rmed.

■ Setting non-active WEEKLY TIMER .

1. Direct the remote controller towards the indoor unit and press

(CANCEL) button.

Beep sound will be emitted from indoor unit and TIMER lamp will be

OFF. Reservation indication on remote display will also disappear.

This indicates that non-active WEEKLY TIMER has been conÚ rmed.

● To activate back the setting of WEEKLY TIMER , repeat the steps for

"How to select Mode A or Mode B of WEEKLY TIMER setting".

NOTE

● When setting ONCE TIMER, operation of WEEKLY TIMER is interrupted. After ONCE TIMER operation

is complete, WEEKLY TIMER operation will be activated.

● When ONCE TIMER is cancelled, operation of WEEKLY TIMER is also cancelled. Need to set WEEKLY

TIMER operation for activation.

● After auto restart, WEEKLY TIMER operation is cancelled. Need to set WEEKLY TIMER operation for

activation.

1

2

1

WEEKLY TIMER OPERATION

Step 2: Select Mode A or Mode B and activate or deactivate WEEKLY TIMER.

3

2ー11

– 23 –

ENGLISH

■ How to copy and paste.

Editing the reservation schedule is easy by copying data from one day to

another day.

1. Press

(WEEKLY) button to select Mode A or Mode B.

2. Press (WEEKLY) button for about 3 seconds to start editing the

reservation schedule.

3. Press (DAY) button to select a day of the week to copy.

4. Press (COPY/PASTE) button. Then "PASTE" blinks on the

display.

* Press (CANCEL) button to cancel the COPY mode. Normal

setting mode is activated.

5. Press (DAY) button to select a day of the week to paste.

6. Press (COPY/PASTE) button one more time to paste. only

blinks on the display.

7. To continue copying to other days, press or or or

.

Then start from step 3.

8. After copy and paste completed, press (SEND) button while

directing the remote controller towards the indoor unit for about 3

seconds. Timer lamp on the indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.

Please ensure that the TIMER lamp lights up.

If TIMER lamp does not light up, Press

(SEND) button again.

● Reservation data will not change if (SEND) button is not pressed.

Step 3: Copy and cancel the reservation schedule.

NOTE

● If there is no reservation data, copying data from one day to another day cannot be done.

1

2

3

4

5

6

8

WEEKLY TIMER OPERATION

– 24 –

Step 3: Copy and cancel the reservation schedule.

■ How to delete WEEKLY TIMER data.

[Delete one program number reservation]

1. Press

(WEEKLY) button to select Mode A or Mode B.

2. Press (WEEKLY) button for 3 seconds to start editing the reserva-

tion schedule.

3. Press (DAY) button to select a day of the week to edit.

4. Press to select program number. Selected program number will

blink.

5. Press (DELETE) button. Reservation of selected program number

is deleted.

6. After deleting, press (SEND) button while directing the remote

controller towards the indoor unit for about 3 seconds. Timer lamp on the

indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.

Please ensure that the TIMER lamp lights up.

● Reservation will not change if (SEND) button is not pressed.

1

2

3

4

5

6

WEEKLY TIMER OPERATION

2ー12

– 25 –

ENGLISH

Step 3: Copy and cancel the reservation schedule.

[Delete one day reservation]

1. Press

(WEEKLY) button to select Mode A or Mode B.

2. Press (WEEKLY) button for 3 seconds to start editing the

reservation schedule.

3. Press (DAY) button to select a day of the week to edit.

4. Press (DELETE) button for about 10 seconds. Reservations for all

program numbers will be deleted.

● If press for a short time, reservation for one program number will be

deleted.

5. After deleting, press (SEND) button while directing the remote

controller towards the indoor unit for about 3 seconds. Timer lamp on the

indoor unit will blink rapidly.

After beep sound emitted from indoor unit, TIMER lamp will light up.

Please ensure that the TIMER lamp lights up.

● Reservation will not change if (SEND) button is not pressed.

1

2

NOTE

● If all reservations in the remote controller were deleted and pressed (SEND) button, no signal will

be transmitted to indoor unit. TIMER lamp will remain off and no changes will be done to the reservations

stored in the indoor unit.

3

2

4

5

WEEKLY TIMER OPERATION

[Delete Mode A or Mode B]

1. Press (WEEKLY) button to select Mode A or Mode B.

2. Direct the remote controller towards the indoor unit and press

(DELETE) button for about 10 seconds while Mode A or Mode B display

blinks.

After beep sound emitted from indoor unit, reservations for Mode A or

Mode B will disappear.

– 26 –

INFO FUNCTION

● By pressing (INFO) button, temperature around remote controller and monthly power consumption will

be displayed on the remote controller.

● After changing the batteries, direct the remote controller towards the indoor unit and press (INFO) button.

Current calendar and clock will be transmitted from indoor unit.

● In order to receive information from indoor unit, the distance between remote controller and receiver of indoor

units is within 2 meters.

■ To check temperature around remote controller

■ Current calendar and clock can be retrieved from indoor unit

■ To check monthly power consumption

Press (INFO) button.

Temperature will be displayed for 10 seconds.

Direct the remote controller towards the receiver of indoor unit (within 2 meters

in front of indoor unit) and press

(INFO) button. Wait for 2 seconds for

signal transmission.

Once received the current calendar and clock, check whether they are correct

or not by pressing

(CLOCK) button.

● If there is no power supply to indoor unit or calendar and clock have not been

set, INFO function cannot be used for sending or receiving information.

Direct the remote controller towards the receiver of indoor unit (within 2 meters

in front of indoor unit) and press

(INFO) button. Wait for 2 seconds for

signal transmission.

While temperature around remote controller is displayed, press

(INFO)

button repeatedly. The display will show as below:

this month power consumption amount for heating

last month power consumption

amount for heating this month power consumption amount for cooling last

month power consumption amount for cooling temperature around remote

controller this month power consumption amount for heating ...... cyclically.

● If indication is not given, bring remote controller closer to the receiver of

the indoor unit.

● Indicated value shall be regarded as a guide only.

NOTE

● In case failure occurs to the air conditioner, by pressing (INFO) button, an error code will be displayed.

Direct the remote controller towards the receiver of indoor unit (within 2 meters in front of indoor unit)

and press

(INFO) button. Wait for 2 seconds for signal transmission.

An error code will be displayed.

Call service center and inform the error code.

● Information of "Monthly power consumption" is not available for 6 rooms multi system.

● Info Function to check monthly power consumption.

During installation, in case of power failure or breaker ON / OFF, ensure to set the clock and calendar for each

indoor unit (unit in standby mode or auto restart), for single or multi connection, by pressing

(START / STOP)

button.

Failure to do the above,monthly power consumption amount will not be displayed on the remote controller.

1

2ー13

– 27 –

ENGLISH

OPERATION MODE LOCK

The remote controller can be set to Ú x the HEATING mode (including FAN), COOLING mode (including FAN)

and DEHUMIDIFYING mode (including FAN) operations.

■ Method to lock HEATING mode (including FAN) operation.

Press (ECO) and (POWERFUL) buttons simultaneously for about 5

seconds when the remote controller is OFF.

“ ”, “ ” and “ ” will be displayed for about 10 seconds. Later, “ ” and

“ ” will remain.

This indicates that HEATING mode operation is locked.

When pressing (MODE) button, “ ” or “ ” will be displayed.

■ Method to unlock HEATING mode (including FAN) operation.

Press

(ECO) and (POWERFUL) buttons simultaneously for about 5

seconds when the remote controller is OFF.

All operation mode symbols will appear on the display for about 10 seconds. After

that, operation mode symbol before cancellation will be displayed.

This indicates that HEATING mode operation is unlocked.

■ Method to lock COOLING and DEHUMIDIFYING modes (including FAN)

operations.

Press

(ECO) and (SILENT) buttons simultaneously for about 5 seconds

when the remote controller is OFF.

“ ”, “ ”, “ ” and “ ” will be displayed for about 10 seconds. Later, “ ”

and “ ” will remain.

This indicates that COOLING and DEHUMIDIFYING mode operation is locked.

When pressing (MODE) button, “ ”, “ ” or “ ” will be displayed.

■ Method to unlock COOLING and DEHUMIDIFYING modes (including FAN)

operations.

Press

(ECO) and (SILENT) buttons simultaneously for about 5 seconds

when the remote controller is OFF.

All operation mode symbols will appear on the display for about 10 seconds. After

that, operation mode symbol before cancellation will be displayed.

This indicates that COOLING and DEHUMIDIFYING modes operation is unlocked.

NOTE

● Operation Mode Lock function will not activate if TIMER reservations activate.

TIMER reservations shall be deactivated Ú rst. Then, Operation Mode Lock function can be activated.

● HEATING, COOLING and DEHUMIDIFYING mode (including FAN) operations can be unlocked by pressing

the

(RESET) button. However, by pressing the (RESET) button, all the information stored

in the remote controller will disappear. You may need to set the necessary information again.

● For multi connections, unit and mode which is set to lock HEATING and switched on Ú rst shall have

higher priority. Other units which are chosen to operate at different modes shall be in STANDBY until

either the Ú rst unit operation is switched off or the mode is selected to be same as the Ú rst unit.

2ー14

– 2 –

• 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 signs indicate the following meanings. (The following are examples of signs.)

PRECAUTIONS DURING OPERATION

WARNING

SAFETY PRECAUTION

• Do not reconstruct the unit.

yb tinu eht tcurtsnocer uoy fi rucco yam er if ro tiucric trohs ,tluaf ,egakael retaW

yourself.

• Please ask your sales agent or qualified technician for the installation of your unit.

Water leakage, short circuit or fire may occur if you install the unit by yourself.

• Please use earth line.

Do not place the earth line near water or gas pipes, lightning-conductor, or the

earth line of telephone. Improper installation of earth line may cause electric

shock or fire.

• n

i tluser yam siht ,esiwrehtO .A014R rof tes gnipip de ificeps eht esu ot erus eB

broken copper pipes or faults.

• A circuit breaker should be installed depending on the mounting site of the unit.

Without a circuit breaker, the danger of electric shock exists.

•

• .esoh niard eht

gnillatsni nehw retaw fo wo lf htooms erusne esaelP

• Make sure that a single phase power source is used.

The use of other power sources may cause electrical components to overheat

.er if ot dael dna

PRECAUTIONS DURING INSTALLATION

PROHIBITION

CONNECT EARTH LINE

PROHIBITION

WARNING

CAUTION

•

• Please contact your agent for maintenance. Improper self maintenance may cause electric

.er if dna kcohs

• er if ro kcohs cirtcelE .tinu eht llatsnier dna evomer ot deen uoy fi tnega ru

oy tcatnoc esaelP

may occur if you remove and reinstall the unit yourself improperly.

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

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

• During thunder storm, disconnect the plug top and turn off the circuit

breaker.

• Do not put objects like thin rods into the panel of blower and suction side

because the high-speed fan inside may cause danger.

• Spray cans and other combustibles should not be located within a meter of the

air outlets of both indoor and outdoor units.

As a spray can’s internal pressure can be increased by hot air, a rupture may result.

PROHIBITION

“OFF”

PROHIBITION

Avoid an extended period of direct airflow for your health.

220V-230V

Please keep this manual after reading.

Make sure to connect earth line.

Indicates the instructions that must be followed.

This sign in the figure indicates prohibition.

Do not install the unit near a location where there is flammable gas.

The outdoor unit may catch fire if flammable gas leaks around it.

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

unit and turn off the circuit breaker. Contact your

fire may occur if you continue to operate the unit

under abnormal situation.

agent. Fault, short circuit or

– 3 –

DEUTSCHSIAÇNARFONAILATIHSINAPSSÊUGUTROPЙИКССУР

ENGLISH

• .stnalp eht rof dab si ti sa wo lfria eht rednu yltcerid stnalp ecalp ton oD

• 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.

• ton dna noitac ific

eps rerutcafunam eht rednu detarepo eb llahs tcudorp ehT

for any other intended use.

PRECAUTIONS DURING OPERATION

CAUTION

• Do not attempt to operate the unit with wet hands, this could cause fatal

accident.

• When operating the unit with burning equipments, regularly ventilate

.ycneic iffusni negyxo diova ot moor eht

• tuohtiw dna mr if ,elbats syawla si emarf gnitnuom roo

dtuo taht erusne esaelP

defect. If not, the outdoor unit may collapse and cause danger.

• Do not wash the unit with water or place a water container such as a vase on

the indoor unit.

Electrical leakage could be present and cause electric shock.

• Be sure to stop the operation by using the remote controller and turn off the

circuit breaker during cleaning, the high-speed fan inside the unit may cause

danger.

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

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

• When operating the unit with the door and windows opened, (the room

gnivom ro nwod gnicaf rotce lfed ria eht htiw dna )%08 evoba

syawla si ytidimuh

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.

• Indoor unit cleaning must be performed by authorized personnel only. Consult

This appliance is not to be used by children or persons with reduced physical, sensory or mental

instruction. Children must be supervised not to play with the appliance.

your sales agent.

capabilities, or lack of experience and knowledge, unless they have been given supervision or

Using a commercially available detergent or similar can damage the plastic parts

or clog the drain pipe, causing water to drip with potential electric shock hazard.

• roodtuo eht fo n if muinimula dna ecafrus mottob ,teltuo ria eht hcuot ton oD

unit.

You may get hurt.

Do not touch the refrigerant pipe and connecting valve.

Burns may result.

PROHIBITION

DON’T WET

PROHIBITION

DON’T TOUCH

“OFF”

PROHIBITION

DON’T TOUCH

STRICTLY OBSERVE

PRECAUTIONS

“OFF”

•

2ー15

– 4 –

OPERATING RANGE

Operation mode Cooling / Dehumidifying Heating

Outdoor temperature

-

10 to 43°C

-

15 to 21°C

Remote controller

Send out operation signal to the indoor unit.

So as to operate the whole unit.

(Refer Remote control manual)

Indoor unit indicators

Horizontal air deflector (Air intake)

(Opens during operation and it closes

when it stops operation.)

Air filter

Front panel

Horizontal air

deflector (Air outlet)

Signal receiver

HTPEDTHGIEHHTDIWLEDOM

RAF-25RXB, RAF-35RXB, RAF-50RXB 750mm (29-17/32") 590mm (23-6/25") 215mm (8-15/32")

MODEL NAME AND DIMENSIONS

NAMES AND FUNCTIONS OF EACH PART

INDOOR UNIT

CAUTION

Do not put anything in front

of the signal receiver. Or

else, it may not receive the

signal properly.

Adjusting the number of indoor units:

Decrease the number of

indoor units to be operated

especially when it is very hot

or very cold or when you

want to reach the preset

temperature quickly.

NOTE FOR MULTI SYSTEM

Several indoor units can be connected to one outdoor unit.

You can operate only one unit or several units according to your needs.

Combination of operations:

the following combinations.

You cannot operate the indoor units in

One unit Other unit

Heating

Dehumidifying

Fan

Cooling

Other indoor units which are turned on later go into standby

The indoor unit which is turned on first continues to operate.

To operate the indoor units turned on later, set the operation

mode and the operation lamp lights.

mode as same as the indoor unit turned on first.

Stopped indoor units:

When an indoor unit is operated in the cooling,

heating or dehumidifying mode in one room,

the sound of refrigerant flow may be heard

from a stopped indoor unit or a stopped indoor

unit may become warm. This is because the

indoor unit returns refrigerant to the outdoor

unit to be ready for operation.

When operation mode is selected:

During automatic operation:

When heating operation is automatically selected for the first indoor unit, the next indoor unit will then start to

heat. Also, if cooling or dehumidifying is automatically selected for the first indoor unit, the next indoor unit will

also start to cool or dehumidify.

– 5 –

HSILGNE

DEUTSCHSIAÇNARFONAILATIHSINAPSSÊUGUTROPЙИКССУР

Open the front panel

s To open the front panel, use the remote controller to stop unit

operation. Then press at the top left and right corners of the front

panel.

s Grasp the left and right sides of the front panel and open it toward

you.

Close the front panel

s To close the front panel, press at the top left and right corners of the

front panel.

s Press the upper center part of the front panel to close properly.

TIMER lamp

This lamp lights when the timer is working.

OPERATION lamp

This lamp lights during operation.

During heating, the operation indicator may

blink, blowing very lightly or totally stopping

under the following conditions:

(1) During preheating (heating operation)

For about 2~3 minutes after start up.

(2) During defrosting (heating operation)

Defrosting will be performed about

once an hour when frost forms on the

heat exchanger of the outdoor unit, for

5~10 minutes each time. (If the piping

length used is longer than usual, frost will

likely to form.)

TEMPORARY SWITCH

Top left and right corners

TEMPORARY SWITCH

s

Upper center part

INDOOR UNIT INDICATORS

HOW TO OPEN OR CLOSE THE FRONT PANEL

FILTER lamp

This lamp lights when the

device is operated for a total

of about 200 hours, it is time

to clean the filter. The lamp

goes out when the “

(AUTO

SWING)” button is pressed

while the operation is stopped.

Use this switch to start and stop when the remote

controller does not work.

By pressing the temporary switch, the operation

is done in automatic mode.

When the operation is done using the temporary

switch after the power source is turned off and

turn on again, the operation is done in automatic

mode.

ENGLISH

2ー16

– 6 –

DEUTSCHSIAÇNARFONAILATIHSINAPSSÊUGUTROP

ЙИКССУР

ADJUSTING THE AIR DEFLECTORS

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.

1

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.

Use the horizontal air deflector within

the adjusting range shown in the right

figure.

When the “

(AUTO SWING)” button is

pressed while the operation is stopped,

the horizontal air deflector moves and

stops at the position where the air outlet

closes.

When the auto swing operation is

performed, if the horizontal air deflector

is moved manually, the swinging range

may drift. However, it will return to the

original operation range after a short

time.

When the humid in the room is high

during cooling or dehumidifying

operation, the horizontal air deflector

may automatically change to the straight

direction to prevent dew (except during

auto swing operation).

Vertical

When

heating,

about 20°

When cooling,

dehumidifying

about 50°

about

70°

Vertical air deflector

EXTENDED AIRFLOW

(Heating)

EXTENDED AIRFLOW

(Cooling, dehumidifying)

For

a

certain

period

of time

(about

30 minutes) after starting the cooling

operation, it operates to cool the room

quickly. During this operation, if the

horizontal air deflector is adjusted to your

preferred angle by “

(AUTO SWING)”

button, it returns to the proper angle

automatically after a certain period of time.

In this case, press “

(AUTO SWING)”

button to adjust the deflector to your

preferred angle again.

– 7 –

CIRCUIT BREAKER

When you do not use the room air conditioner, set the circuit breaker to “OFF”.

HOW TO USE THE AIR CONDITIONER EFFECTIVELY

1. An average room temperature setting is probably the best for you as well as being

economical.

bills may also result.

Excessive cooling or heating is not recommended for health reasons. High electricity

well as to make more effective use of electricity.

Close the curtains or blinds to prevent heat from flowing into or escaping the room as

2. At intervals, the doors and windows should be opened to let fresh air in.

CAUTION

Make sure the room is ventilated when operating the air conditioner

at the same time as other heating appliances.

3. Using the timer is recommended before going to sleep or going out.

4. The following must never be used for cleaning the indoor and outdoor units:

5. Do not block the air intake and air outlet.

or other obstacles which could degrade air conditioner performance and cause unit

Do not block the air outlets and intakes of the indoor and outdoor units with curtains

Benzine, thinner and scrub can damage plastic surfaces or coating.

Hot water above 40°C can shrink the filter and deform plastic parts.

failure.

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.

2

CAUTION

When operating the unit in cooling operation with the air deflector facing down and moving

for a long period of time, water will be condensed on the air deflector and drips down occasionally.

will wet your furniture.

Vertical air deflector

ENGLISH

2ー17

– 8 –

DEUTSCHSIAÇNARFONAILATIHSINAPS

1. AIR FILTER

Clean the air filter, as it removes dust inside the room.

Be sure to clean the filter once every two weeks so as not to consume electricity unnecessarily.

PROCEDURE

MAINTENANCE

Open the front panel.

operation. Then press at the top left and right corners of the front

To open the front panel, use the remote controller to stop unit

Grasp the left and right sides of the front panel and open it toward you.

panel.

1

WARNING

Remove the filters.

(Front side 2 pieces, upper side 2 pieces, total 4 pieces.)

2

Remove dust of the filters using a vacuum cleaner.

shade.

After using neutral detergent, wash with clean water and dry in

Attaching the filters.

3

Attach the filters.

(Front side 2 pieces, upper side 2 pieces, total 4 pieces.)

4

CAUTION

The filter may shrink. And also use a soft sponge to wash. Using a scrubber or brush cause the metal film

Don’t operate the unit without filter. Fault may occur if you continue.

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.

on the surface to come off.

Close the front panel.

front panel.

To close the front panel, press at the top left and right corners of the

Press the upper center part of the front panel to close properly.

5

CAUTION

Do not expose the unit to water as it may cause an electric shock.

For cleaning inside the air conditioner, consult your sales agent.

Avoid using detergent when cleaning the heat exchanger of the indoor unit. Unit failure may result.

Before cleaning, stop unit operation with the remote controller and turn off the circuit breaker.

hands on the heat exchanger fins.

When cleaning the heat exchanger with a vacuum cleaner, make sure to wear gloves so as not to injure your

Upper side filter

Front side filter

– 9 –

Removing

Press the hook found at the tip of the resin band

installed inside the front panel’s right section to

remove the resin band.

2. HOW TO INSTALL AND REMOVE THE FRONT PANEL

4. MAINTENANCE AT BEGINNING OF LONG OFF PERIOD

dry and prevent mold formation.

Activating air conditioner drying will keep the interior of the indoor unit

Turn off the circuit breaker.

Pull the front panel down toward you and once

fully open, pull it to remove.

Attach three front panel bearings to the axis of

the front cover. (Set the hook to face up.)

Insert the tip of the resin band into the hole of the

protrusion inside the right section of the front

panel.

3. CLEANING OF FRONT PANEL

The front panel can be washed in water. It can be kept clean at all times.

front panel using a soft sponge.

Front panel can be removed and washed in water. Gently clean the

Be sure to use both hands to grasp the front panel when removing it or attaching it.

The front panel may be installed up or down to suit user preference.

panel, clean both the body and remote controller with a dry soft cloth.

When the air conditioner is to be cleaned without removing the front

light receiver section, this could cause a malfunction.

Wipe off water completely. If water remains on the display section or

CAUTION

cause short circuit.

Do not splash or direct water to the body of the unit when cleaning it as this may

brush, because it will damage the plastic surface and the coating.

Never clean with hot water (above 40°C), benzine, gasoline, acid, thinner or a

Resin band

Air blow

B

E

N

Z

I

N

E

T

H

I

N

E

R

A

CID

Hook

Front cover

Front panel

Resin band

Attaching

1

2

21

ENGLISH

2ー18

– 10 –

DEUTSCHSIAÇNARFONAILATIHSINAPS

5. AIR CLEANSING FILTERS (SPX-CFH15)

When installing the air cleansing filters, remove the air filters and attach

them onto the hooks of the front cover frame.

The cooling capacity is slightly weakened and the cooling speed becomes

slower when the air cleansing filters are used. So, set the fan speed to

“HIGH” when using it in this condition.

The air cleansing filters can be used for 2 years.

Air cleansing filters

Heating Capability

This room air conditioner utilizes a heat pump system that absorbs

exterior heat and brings it into a room to be heated. As the ambient

temperature gets lower, heating capability will also lower. In such a

situation, the PAM and inverter work to increase compressor rpm to keep

the unit’s heating capability from decreasing. If the unit’s heating

performance is still unsatisfactory, other heating appliances should be

used to augment this unit’s performance.

The air conditioner is designed to heat an entire room so that it may take some time before you feel warm. Timer

operation is recommended for effective preheating ahead of the desired time.

Cooling and Dehumidifying Capabilities

If the heat present in a room exceeds the unit’s cooling capacity (for example, if there are many people in the room

or other heating appliances are used), the preset room temperature may not be reached.

INFORMATION

CAPABILITIES

CAUTION

Do not use a stove

or any other high-

temperature devices

in proximity to the

indoor unit.

PROHIBITION

– 1 –

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS EVERY EITHER HALF YEARLY OR YEARLY. CONTACT YOUR

SALES AGENT SHOULD YOU NEED ANY HELP.

1

2

Check to see if the unit’s earth line has been connected

correctly.

If the earth line is disconnected or faulty, unit failure or electric

shock hazard may result.

Check to see if the mounting frame has rusted excessively

or if the outdoor unit has tilted or become unstable.

It could collapse or fall, causing injury.

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING

STNIOP GNIWOLLOF EHT KCEHCNOITIDNOC

Do the batteries need replacement?

Is the polarity of the inserted batteries correct?

Is the air filter blocked with dust?

Is the set temperature suitable?

Have the top and bottom air deflectors been adjusted to their correct

positions according to the operation mode selected?

Are the air inlets or air outlets of indoor and outdoor units blocked?

Is the fan speed “LOW” or “SILENT”?

WARNING

AFTER SALES SERVICE AND WARRANTY

Is the fuse all right?

Is the voltage extremely high or low?

Is the circuit breaker “ON”?

Is the setting of operation mode different from other indoor units?

When it does not operate.

When it does not cool well.

When it does not heat well.

The following phenomena do not indicate unit failure.

The unit is preparing to blow warm air. Please wait.

The outdoor unit is defrosting. Please wait.

Hissing or fizzy sounds

Refrigerant flow noise in the pipe or valve sound generated when flow rate is

adjusted.

Squeaking noise

Noise generated when the unit expands or contracts due to temperature

changes.

Rustling noise

Noise generated with the indoor unit fan’s rpm changing such as operation start

times.

.no dehctiws si tinu eht nehw evlav dezirotom eht fo esioNesion gnikcilC

Perking noise

Noise of the ventilation fan sucking in air present in the drain hose and blowing out

dehumidifying water that had accumulated in the condensed water collector. For

details, consult your sales agent.

Changing operation noise

Operation noise changes due to power variations according to room temperature

changes.

.ria denoitidnoc yb delooc ylneddus si moor eht nihtiw ria eht sa detareneg si tsiMnoissime tsiM

During heating, the operation indicator

blinks and air blow stops

If the remote controller is not

transmitting a signal.

(Remote controller display is

dim or blank.)

ENGLISH

2ー19

– 1 –

Steam emitted from the outdoor unit Water generated during defrosting operation evaporates and steam is emitted.

Odors

Caused as the smells and particles of smoke, food, cosmetics, etc. present in room

air become attached the unit and blown off into the room again.

Defrosting is underway (as the heating operation is stopped, the microcomputer

checks frost accumulated in the indoor unit and instructs the unit to perform

automatic defrosting if necessary).

Shows preheating or defrosting operation is underway.

As the protective circuit or preheat sensor operates when unit operation is stopped

during preheating and then restarted, or when operation mode is switched from

cooling to heating, the lamp continues to blink.

Actual room temperature may deviate slightly from the remote controller’s

temperature setting depending on the number of people in the room, indoor or

outdoor conditions when the air conditioner is used for more than one room at the

same time.

If the unit still fails to operate

normally after performing the

above inspections, turn the

circuit breaker off and contact

your sales agent immediately.

Contact your sales agent immediately if the

following phenomena should occur:

The circuit breaker switches off or the fuse blows

frequently.

The switch operation is not stable.

Foreign matter or water accidentally enters the unit interior.

The power cord gets excessively hot or its insulation is torn or

stripped.

TIMER lamp on the indoor unit display blinks.

As the nature of the failure can be identified by the blinking cycle,

check the blinking cycle before turning off the circuit breaker.

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.

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.

Notes

In quiet operation or stopping the running, the following phenomena may

occasionally 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

please clean the air filter and the evaporator regularly to reduce the odor.

The outdoor unit continues to operate

even if operation is stopped

Does not reach the temperature

setting

The OPERATION lamp is blinking

( )

2ー20

3ー1

CONSTRUCTION AND DIMENSIONAL DIAGRAM

INDOOR UNIT

MODEL RAF-25RXB,RAF-35RXB,RAF-50RXB

80~100

65

ø65 Standard underfloor piping position

585

Front panel

Cabinet

Air inlet

Piping hole in right side

15

61

81

115

590

750

AIir outlet

45

99

365

34

70

99

78

50

20

641

ø5Hole for fixing to floor

17

Drain hose

170

55

ø65standard underfloor piping hole position

466

714

345

17

272

314

56

71

150

165

215

79

ø9 Rear fixing hole for anchor bolt

Ore more

150mm

Or more 150mm

Or more 100mm

30

Ore more

150mm

Lattice door

61

81

15

115

19.360

220.4

Small dia. pipe

(ø6.35)

Large dia. pipe RAF-50RXB:ø12.7 RAF-35RXB:ø9.52 RAF-25RXB:ø9.52

Or more 150mm

Wireless remote controller

Built-in installation

Or more 100mm

Or more 200mm

Unit : mm

3ー2

CONSTRUCTION AND DIMENSIONAL DIAGRAM

OUTDOOR UNIT

Handle

Air Suction grill

Air outlet

Handle

Rear side

Holes for anchor bolt

(2 – ø12 x 6 slots for ø8.0 bolt)

(for 2 – ø8.0 bolt)

Notch for anchor bolt

Fixing hole

Drain hole

More

than

50

More than

100

More than

200

More

than

300

Service space

More

than

200

NOTE:

1.For outdoor unit installation , allow at least 2 sides of space around the unit ensure ventilation flue.

2.The connecting pipe , should all the insulated with insulation pipe.

3.Piping length is within 20m.

4.Height d fferent of the piping between the indoor unit and outdoor unit s ould be within 10m.hi

MODEL RAC-25FXB,RAC-35FXB

3ー3

Unit : mm

CONSTRUCTION AND DIMENSIONAL DIAGRAM

OUTDOOR UNIT

NOTE:

1.For outdoor unit installation , allow at least 2 sides of space around the unit ensure ventilation flue.

2.The connecting pipe , should all the insulated with insulation pipe.

3.Piping length is within 20m.

4.Height d fferent of the piping between the indoor unit and outdoor unit s ould be within 10m.hi

MODEL RAC-50FXB

More

than

200

880.5

800

74

6.5

736

408.5

350

111.5

(35.5)

(23)

(30)

706

175

103.5

543.5

133

12

50

395

361

10

202.5

More

than

50

More

than

100

More

than

700

More

than

200

4ー1

MAIN PARTS COMPONENT

Thermostat Specifications

THERMOSTAT (Room temperature Thermistor)

RAF-25RXB,RAF-35RXB,RAF-50RXB

FAN MOTOR

MAIN ELECTRIC COMPONENTS FOR OUTDOOR UNIT

Fan Motor Specifications

SLEDOM ELBACILPPAGNITAREMAN

BLU : BLUE YEL : YELLOW BRN : BROWN WHT : WHITE GRY : GRAY ORN : ORANGE GRN : GREEN RED : RED BLK : BLACK PNK : PINK VIO : VIOLET

RAF-25/ 35/ 50RX B

RAC-25 /35/ 50FXB

CONNECTION

MODEL

ECRUOS REWOP

TUPTUO

DC : 280V

W83

(Control circuit built in)

M

WHT

RED

YEL

0-6.5V

0V

V

15V

BLU

BLK

280

V083 - 021 : CD

W74

WHT(V)

BLK(W)

M

RED(U)

RAC-25/ 35FXB

REACTOR

RAC-50FXB

5.3 (mH), 67m

15 (mH) 230 m MAX (20 ˚C)

MODEL

THERMOSTAT MODEL IC

OPERATION MODE HEATCOOL

ON 15.3 (59.54) 16.7 (62.06)

OFF 15.0 (59.00) 16.7 (62.06)

ON 23.3 (73.94) 24.7 (76.46)

OFF 23.0 (73.40) 24.7 (76.46)

ON 31.3 (88.34) 32.7 (90.86)

OFF 31.0 (87.80) 32.7 (90.86)

TEMPERATURE ˚C (˚F)

INDICATION

16

INDICATION

24

INDICATION

32

4ー2

WHITE

COMPRESSOR

YELLOW

RED

FRONT SIDE OF OUTDOOR UNIT

MODEL

COMPRESSOR TYPE

POWER SOURCE

COMPRESSOR MOTOR

Compressor Motor Specifications

CAUTION

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.

(U)

(V)

(W)

M

WHITE

YELLOW

RED

ASD084SFNA7JK1

(U)

(V)

(W)

75

2M= 0.74

2M= 0.88

2M= 2.4

2M= 2.0

RAC-25/35FXB

ASG133CDNB7AT

100 - 240 V

220 - 350 V

RAC-50FXB

WIRING DIAGRAM

RAC-25/35FXB

RAF-25/35/50RXB

MODEL

RAC-50FXB

MODEL

ＨＥＡＴＥＸＣＨＡＮＧＥＲＴＨＥＲＭＩＳＴＯＲ

ＩＮＤＯＯＲ

ＦＡＮＭＯＴＯＲ

ＣＯＮＮＥＣＴＩＮＧ

ＣＯＲＤ

ＴＨＥＲＭＡＬＦＵＳＥ（１０２℃）

３Ｐ−ＴＥＲＭＩＮＡＬＢＯＡＲＤ

ＲＯＯＭＴＥＭＰＥＲＡＴＵＲＥＴＨＥＲＭＩＳＴＯＲ

ＡＣ２３０Ｖ５０Ｈｚ

ＧＲＮ

ＶＥＲＴＩＣＡＬＳＷＥＥＰＭＯＴＯＲ２

ＶＥＲＴＩＣＡＬＳＷＥＥＰＭＯＴＯＲ１

ＷＩＲＥＬＥＳＳＲＥＭＯＴＥＣＯＮＴＲＯＬＬＥＲ

ＧＲＮ：ＧＲＥＥＮ

ＩＮＤＩＣＡＴＩＮＧ

Ｐ．Ｗ．Ｂ

ＬＩＧＨＴＲＥＣＥＩＶＩＮＧ

ＵＮＩＴ

ＧＲＹ：ＧＲＡＹ

ＲＥＤ：ＲＥＤ

ＢＬＫ：ＢＬＡＣＫ

ＷＨＴ：ＷＨＩＴＥ

ＳＷＩＴＣＨＰ．Ｗ．Ｂ

３

１

ＦＵＳＥ

ＦＵ１（３．１５Ａ）

ＶＡ００１

ｕ

Ｒ００２

Ｃ００１

Ｃ０１１

Ｃ０１２

Ｃ０１４

Ｃ０１３

Ｃ００２

Ｃ００３

ＴＨ００１

ＤＢ１

ＰＯＷＥＲＣＩＲＣＵＩＴ

ＮＦ１

＋

ＣＮ２

Ｍ

１７４

ＲＥＤ

ＢＬＫ

ＷＨＴ

ＹＥＬ

ＢＬＵ

ＢＬＫ

ＷＨＴ

ＲＥＤ

ＢＬＫ

ＲＥＤ

ＢＬＫ

ＧＲＹＧＲＹ

ＲＥＤ

ＣＮ３

２

１

ＣＮ４

１

６

ＣＮ７

Ｈ−ＬＩＮＫ

ＷＩＲＥＤＲＥＭＯＴＥＣＯＮＴＲＯＬＬＥＲ

ＴＥＳＴ

ＣＮ６

１１１

ＣＮ１１

１４

ＣＮ２０

ＣＮ１７

ＣＮ１３

Ｍ

５

１０

ＣＮ１５

５

９

Ｍ

５

１

４

ＣＯＮＴＲＯＬＰ．Ｗ．Ｂ

Ｌ０１０

Ｍ

５

１５

１９

１９１５１５

ＣＮ１９

１４

ＳＵＣＴＩＯＮＤＥＦＬＥＣＴＯＲＭＯＴＯＲ

３４

１２

ＲＥＤ

ＢＬＫ

２

１４

5ー1

WIRING DIAGRAM OF THE PRINTED WIRING BOARD

[Remote controller] RAR-6N4

SWB~SW10 Carbon SW

Reset carbon SW

EXTENDED

SWING

5ー2

CIRCUIT DIAGRAM

RAF-25/35/50RXBMODEL

R801

R802

R233

R773

R774

R623

15

9

11

12

14

16

13

8

7

10

19

20

17

18

2

1

5

3

4

6

21

24

25

22

23

0V

2

4

3

6

RX

TX

5

12V

0V

CN7

12V

C671

CZ-11P-Top

RES

SCL

11

7

0V

SDA

CN6

9

10

6

8

2

1

3

4

5

テスト

NMI

5V

RX

TX

M2

C2

1

PC203

R632

R633

87

60

62

61

74

63

64

37

75

73

858889

66

67

68

86

72

69

P32

414038 39

57

58

56

59

8384 82 81

42 43 4544

P54

9598 929697 909199 93

PG2

46 47 48 5049

55

52

53

51

54

80 7879 77 76

32 33 34 35 3627 28 29 30 3126

100

TEST

RES

Vss

OSC2

OSC1

NMI

Vcc

V

CL

X1

X2

AVss

AVcc

P85

P86

P87

P35

P36

P37

P34

P33

AN11

PG1

AN8

AN7

AN6

AN5

AN4

AN3

AN2

AN1

AN0

P77

TMOV

P75

P74

P72

P71

SCL

SDA

PC3

PC2

PC1

PC0

P55

P53

P52

P51

P50

Vss

Vcc

P11

P10

P27

P26

P25

P24

P23

TXD

RXD

P20

PH3

P31

P30

PD0

PD4

PH4

PH0

PG4

PG5

PG6

PG7

Vss

FTIOD

IRQ1

IRQ0

P12

TXD 3

RXD 3

PE2

PE6

PD2

FTIOB1

FTIOC1

FTIOD1

LD202

LD203

CN4

4

2

1

3

C622

C633

R635

C631

R634

C634

C681

R631

4

10

11

14

2

IC681

5

8

7

6

9

116

15

12

13

3

M

7

6

8

9

CN11

R532

R531

0V

R534

R533

3

4

1

2

5

C531

8

6

7

IC531

C1C2

R512

R614

R613

C613

R612

R611

C612

C611

RES601

R664

C503

C502

C501

IC501

51

3

Q501

R502

D501

R501

2

C411

R407

R411

R412

R641

R642

IC601

R405

PC202

C621

R663

R665

C685

C617

C618

PE0

PE3

FTIOB2

PE4

PE5

FTIOD3

R781

R503

R234

12V

R232

R231

D321

PC231

C342

R341

NF1

C001

VA001

FU1

C343

L010

C003

R004

C208

DB1

-

+

C002

TH001

C203

54761

CN2

PC202

PC231

R201R202

C201

+

-

C206

R207

-

C202

+

R204

R203

M

WR004

2

CN3

1

R342

C341

T301

C302

0V

1

3

2

R309

R310

R311

C322

R323

C324

0V

D322

C327

-

R325

4

2

D323

R331

C326

R327

R329

R322

R326

C321

R321

1

+

3

8

R324

0V

R332

Q332

Q331

IC301 (1/2)

R205

PC203

R206

ZD202

Q201

D201

R002

R320

R328

R330

C323

C328

C012

R640

+

-

6

5

IC301

(2/2)

7

94

70

71

65

R780

R754

R796

R752

R795

φ4 φ3 φ2 φ1

R751

CN15

D531

D532

C632

4

C011

R403

R402

R784

R785

CZ-5P(Top)

155

13

R772

R409

R406

C402

C403

C404

C405

R511

R661

R408

0V

C

WR001

C014

C013

R793

R779

GND

5V

AX-13D720

外受電専用機種

(Hi)

O

P

Q

R

UST V

CN20

CN19

R694

R695

10

4

C682

15

12

1691

6

3

13

11

8

7

5

2

IC682

14

V

U

T

S

0V

IC532

8

7

6

R535

R536

5

2

4

3

C534

1

R731

2

LD201

R803

Y

R710

C640

Vcc1

Vcc2

Vcc1

Vcc2

Vcc1

Vcc2

Vcc1

R792

R791

R790

R789

R786

R787

R788

WR002

WR003

12V-1

Vcc1

R616

R615

M

φ4 φ3 φ2 φ1

R797

R798

R799

M

Vcc1

Q681

Z

PH6

PH5

PD3

FTIOB0

SCK3 2

IRQ3

Vcc2

C652

4

3

CN11B

Main PCB

Indoor Fan Motor

XH-7P-Top 2,3Pins are not available

Terminal

PH-2P-Tom(WHT)

Heat Exchanger Thermistor

Indoor Temp. Thermistor

PH-4P-Top

Test Connector

(up side)

Operation

Timer

Filter

Horizontal Deflector (Swing Vertically)

Vertical Deflector (Swing Horizontally)

CZ-10P-Top (Wht)

Ther. F

GRN 0.5mm

2

Insulation thickness ≧0.8

BLK 0.5mm

2

WHT 0.5mm

2

RED 0.5mm

2

Insulation thick. ≧0.8

0V

C641

SW401

1

34

6

5

2

R

A

PC101

C

S

G

Q102

Q104

D

R126

R103

R129

C102

C107

R128

R101

R127

R102

8.5V

IC102

D104

+

G

D103

-

G

WJ1

IC103

-

IC101

O

I

O

Vcc1

12V-1

Q101

S

Vcc2

D

R149

R141

R143

R142

G

Q103

C104C110

C105

C106

12V

C111

C113

C108

C127

R124

Ground

6

+

D131

P1

-

(10)

C101

C134

R122

D101

(9)

C126

D102

C006

(4)

Sorce

3

OCP/FB

PC101

5

R132

7

R134

4

Drain

(1)

1

C131

Vcc

IC001

D151

C151

R151

R147

C103

-

R148

R146

+

R145

S3

L151

+

-

(6)

S4

(8)(7)

+

-

(3)

P2

S1 S2

P3

D132

(11)

(5)

C132

CJ2

CJ8

CJ9

L151

WJ1

#AWG20

STR-W6051S

IC103

S812C50AUA

S

IC541

NJM2831

S

Q101

Q102

Q103

Q104

KTC3875S-GR-RTK

SSM3J314T

RRR040P03

C

D102

S3L20U

BL01RN1

L911

L912

15p

12p5050CCC

C

M

1608

1608CHCH

1M 5％

1/16

CCM

M

1005

0.1μ

4.7μ

16

25

C

1608

2125

1608

B

F

1k C

R

2200p

1kCH

1μ

100μ

10

25 C

CDRC

C

1608

YXA

F

1500μ

16 D H

YXH

22p

H

SL

C

620

1005

5％

C

1/16

5％

560

1/16

C

3216

1.2k

2k

1k

1005

5％

C

1/4

2k

5％

M

1/10

C

M

5％

3216

1/10

C

5％

1608

1/4

C

1608

C

5％10k

10k

1/16

1005

5％

1/16

M

1005

M

C

1/16

CM

1005

1k 5％

1/16

C

1k

1005

5％

M

C

1/16

1k 5％

1005

M

C

1/16

M

1k

1005

5％

C1/10

3.3K 1/105％

C

5％4.3K

1/10

3.3KC5％

1608

5％3.3K 1/10

1608

C

1608

58

100K

1/10

5％ C

63

58

59

60

58

C

1/10

5.1K 1/105％

C

5％100K

1/10

3.3KC5％

22

5％ 1/2 A

12

MOS

C

1/10

C5％5％

5％1k 1/4 C

1/10

16M 5％ 1/2 A 16M 5％ 1/2 A

1％

1％ C

CC1％

1/10

6.2k

1％

1/10

C

0.82 5％1H

30k 5％

1/16

CM

1005

30k 5％

1/16

CM

1005

100

KSD62 H

SLD-22-451TAU

10k

10k5％5％

1/10

CCM

M

1608

51515％

5％

1/2

CCM

M

5025

SCH1430

KIA393F-EL/P

S24C16C-T8

(10,C)

(11,F)

(11,G)

(9,G)

(10,H)

(11,F)

(9,G) (10,H)

(9,C)

(10,G)

(5,F)

(7,H)

(7,J)

(5,E)

(6,J)

(7,C)

L152

680k

0V

B05B-CZHK-B-1(WHT)

S2L20U

1.5k

10k

100k

330k

16k

25

3.15k

63

NJM7805DL1

EG01CV1

D1NL40U

D1NL20U

5

φ1

φ3

φ4

φ2

0V

12V

0V

(7,D)

(7,J)

SIR-34ST3F

B04B-PARK-1(RED)

PA-6P-Top

Communication Terminal

For suction Panel

T001(SWト-Trans)

WIRE JUMPER

SEL6414E(GRN)

SEL6914A(YEL)

SEL6814A(ORN)

R766

R760

R759

R758

R757

R769

R768

R770

R771

R761

R762

R763

R764

R765

R742

Q202

R211

Q203

C205

4

3

2

1

4

3

1

2

4

3

2

1

C532

C533

VA001

M

450NR12D

30

VARIS TOR

TH001

5D2-08LCS

HM

31

H

93

THERMISTOR

H

GP1UX511RK

R

IRR

IR RECEIVER

LD202

H

LED

LD203

H

LD201

HHH

HR

91

LD1

BZ681 H

PS1720P02

S

10

SS831 H S

7

HIS-06-N

BUZZER

HUMIDITY SENSOR

SW831 H16B3W-1050 S

SW401 H

HDSW1

SWITCH

RES601

R

175

CSTLS10M0G53-A0

M

RES602

CM

M

NX3215SA

176

OSCILLATOR

H

FU1

M

39

250V 3.15A(リードタイプ)

FUSE

H

WR001

WR002

WIRE

M

H

WR003

M

70

72

71

MH

WR004

HM

73

75

0.5mm

2

(BLK)

0.5mm

2

(WHT)

0.5mm

2

(RED)

0.5mm

2

(GRN)

0.5mm2(BLU)

S80942CNMC-G9CT2G

HD64F36109HV

146

145

147

148

149

150

151

IC001

IC101

IC102

IC301

IC501

IC531

IC601

IC681

S

R

S

H

IC

KIA431A

IC682

S

151

M

25

ULN2003ANSR

M

IC532

SM

149

M

152

153

C

ZD202

159

M

RKZ16CKU

C

ZD211

193

R

RD5.6UJN2

ZENER DIODE

Q653

R651

R650

R652

Q653

KTA2012E

C

140

135

138

137

136

Q201

2SC5810

Q331

Q332

Q501

RN1102TE85L

RN1115TE85L

RN1106TE85L

C

136

Q202

RN1102TE85L

C

139

Q203

RN1402TE85L

C

M

Q681

RN1102TE85L

CM

136

M

Q831

CM

155

156

157

158

139

Q212

CR

2SC2462LC

105

Transistor

T301

T001

NF1

L010

H

UU9LF

A

COIL

170

SS11VL-10062

M

34

36

35

FBA04HA600BB-00

AM

170

A

M

A

M

FBA04HA600BB-00

AM

170

ST4521B

171

B5(7-2.3)B-XH-A

CN2

CN3

CN6

CN7

CN15

CN11

H

CN17

H

RT-01T-1.3B

17

CN4

H

CN17

H

M

S

M

H

S

M

50

51

52

53

54

58

56

B11B-CZHK-B-1(WHT)

B06B-PASK-1(WHT)

CN19

CN20

HHM

B04B-PASK-1

HM

60

65

66

CN13

H

95

M

R

57

B05B-CZHK-B-1(WHT)

S09B-CZHK-B-1(WHT)

B05B-CZKK-B-1(BLK)

B10B-CZHK-B-1(WHT)

59

55

13

CN11B

CN13B

CONNECTOR

B2B-PH-K-S(WHT)

B4B-PH-K-S(WHT)

S4B-ZR-3.4(WHT)

B9B-PH-K-S(WHT)

Withstand Pin

48

0

1/10

C

1608

CJ2

5％

M

CJ4

CJ8

CJ9

0

5％

CM

CHIP JUMPER

PC101

PC202

PC203

PC231

S

173

M

PS2501AL-1

PC911

PC912

PS2501AL-1

SSM

M

173

PHOTO COUPLER

164

DB1

D101

D103

D131

D132

D321

D322

D323

D201

D532

C

165

H

C

A

C

H

DIODE

D531

161

162

D501

C

161

D151

M

D3SB60

28

KDS4148U

KDS226

KDS4148U

KDS184

KDS181

160

HM

D104

KDS4148U

CM

161

A

D541

KDS4148U

CM

161

168

169

26

27

102

103

101

R801 5％

1/10

C

R802 390 5％

1/10

C

300

1608

54

1608

53

R784 10k 5％

1/16

C

68

1005

R785 10k 5％

1/16

C

68

1005

R795 10k 5％

1/16

C

68

1005

R796 10k 5％

1/16

C

68

1005

R779 10k 5％

1/16

C

68

1005

R780 10k 5％

1/16

C

68

1005

R781 10k 5％

1/16

C

68

1005

R797 10k 5％

1/16

C

68

1005

M

R901

R902

R903

R904

R905

R906

R907

R908

R789 10k 5％

1/16

C

68

1005

R790 10k 5％

1/16

C

68

1005

R791 10k 5％

1/16

C

68

1005

R792 10k 5％

1/16

C

68

1005

R786 10k 5％

1/16

C

68

1005

R787 10k 5％

1/16

C

68

1005

R788 10k 5％

1/16

C

68

1005

M

R793 10k 5％

1/16

C

68

1005

R798

R799

10k

68

C

M

1005

M

C

1/16

1005

68

1/16

5％ 5％

1/10

1608

1/10

1608

1/10

1608

R803 390 5％

1/10

CM

54

1608

R834

R832

R835

R831

61

38

68

81

66

81

41

25

82

26

50

Resistor

R327

R328

R329

1/4

R501 R502

1/16

R641

R642

1M 1/4 A

R310 180

2125

R311 820

1608

1/4

1/8

1/10

R407

1/4

12.7k 1/16

1/16

R126

R128

R132

1608

3216

R331 510

R332

R341

R342

R402

R403

R406

R411 10k

R412

R511

R512

R531

R532

R533

R534

R611

R612

R613

R614

R665

1608

R129

R201

R202

R203

R204

R205

R206

R207

3216

1608

2125

1608

33k

100

1/10

3226

R232

R233

2125

R321

R322

R323

R324

R325

R326

1/4

1/10

1/8

C

R122

RCR

R004

HVL

3226

R101

R102

R103

1608

R309 680

1005

43

46

47

7

5％

MOS

3.3k

4.7k

4.3k

5％ 5％ 5％ 5％

5％ 5％

R663

R664

10k

10k 5％

1/16

C

5％

1/16

C

10k 5％

1/16

C

R405

R503

5％

1/16

C

300k

1005

5％

1/16

C

1005

1608

1005

R623 10k 5％

1/16

C

68

1005

R631 10k 5％

1/16

C

68

1005

R632 5％

1/16

61

C

81

1005

R633 5％

1/16

C

81

1005

R634 10k 5％

1/16

C

68

1005

R234

R231

1％ C

R320 51k

1005

1/16

70

51k

1k

1005

5％ C

R330

1/16

68

10k

1005

R635 10k 5％

1/16

C

68

1005

R640 1k 5％

1/16

C

81

1005

1k

R752 5％

1/16

C

1005

68

10k

5％

1/16

C

1005

68

10k

R757

68

1005

R758 5％

1/16

C

10k 5％

1/16

C

1005

68

10k

R759 5％

1/16

C

1005

68

10k

R754

R760

68

1005

R761 5％

1/16

C

10k 5％

1/16

C

1005

68

10k

R762

68

1005

R763 5％

1/16

C

68

1005

R770 10k 5％

1/16

C

68

1005

R771 10k 5％

1/16

C

68

1005

R772 10k 5％

1/16

C

68

1005

R773 10k 5％

1/16

C

68

1005

R774

R408 1k

5％

1/16

C

81

1005

R409

5％

1/16

C

1005

R661 47k 1％

1/16

C

72

1005

H

R650 5％

1/16

C

87

1005

C

10k 5％

1/16

C

1005

68

10k

R764

68

1005

R765 5％

1/16

C

10k 5％

1/16

C

1005

68

10k

R766

68

1005

10k 5％

1/16

C

1/10

1608

65

15k

5％ C

R211

R768 10k 5％

1/16

C

68

1005

R769 10k 5％

1/16

R651 5％

1/16

C

88

1005

R151

1005

1k

1005

1/10

C

10k

1k

390

1.5k

5％ 5％ 5％ 5％

1/8

1/4

C

1k

10k

7.15k

10k

5.1k

10k

5％ 5％ 5％

5％

5％ 5％ 5％ 5％

1％ 1％ 1％ 1％

C

A

1k

47

470k

5％ 1％

5％ 5％

1％ 1％

5％ 5％

1/2

C

1608

62

86

74

71

73

76

51

21

28

36

31

34

20

24

33

16

1005

68

1005

68

1005

68

1005

68

1005

68

1005

68

1/16

5％10k

C

5％

1/10

C

100

1/16

5％

C

402

1k

5.6k

1/8

1/16

1％

1/16

10

17

23

56

81

80

52

79

83

85

58

59

81

83

1005

2125

3216

8

R683

3.3k 5％

1/6

A

58

1k

5％

1/16

C

81

1005

C

1k

390

5.1k

5％ 5％

5％ 5％ 5％ 5％

05％

C

5％

C

4.3k

2.2k

10k 5％

1/16

C

68

1005

390k5％2

9

M

S

M

R002 1/25％ AM

R710 5％

1/16

C

1005

M

R141

R142

05％

1/16

CM

79

1005

05％

1/16

CM

79

1005

1/16

79

1005

R691

R692

R910

R911

R912

R913

R914

R915

1/16

5％

MC

68

R751 10k

1005

R740

R741

R742

R743

R694

R695

10k 5％

1/16

CM

68

1005

1k 5％

1/16

CM

81

1005

5.1k

5.1k 83

CMM

5％ 5％

R535

R536

1/16

C

83

1005

R546

R547

5％

M

5％ MC

C

R545

C

M

5％

0

R124

R127

R134

R143

R145

R146

R147

R148

M

44

1608

M

8

M

68

C

1005

5％

1/16

10k

M

10k 5％

1/16

CM

68

1005

5％

1/16

CM

5％

1/16

CM

1005

R149

R731

10k 5％

1/16

CM

68

1005

68

10k

R615 10k 5％

1/16

CM

68

1005

R616 10k 5％

1/10

CM

1608

15

48

84

78

RCR

R215

1608

C

2.7k

5％

1/10

R

R216

1608

C

47

5％

1/10

R

R217

2125

C

1k

5％

1/8

R

R652 5％

1/10

C

48

1608

0

M

187

185

186

61

Resistor

1608

25

F

1608

0.022μ

2200p

0.1μ

47p

1608

0.1μ

4700p

0.022μ

1608

0.1μ

F F

D

H

C

D

C

D

C

H

R

C

R

CB

F

B

35

50

16

25

25 C

D

C

D

C

D

CC

1608

B

C126

2200p

1k C H

R

C621

C622

C631

C632

C633

C681

C618

C634

0.1μ

1608

0.1μ

50

CH

B

1000p

0.022μ

1000p

50

B

C671

1000p

50

CH

25

16

25

C

F

C

F

25

1608

91

1608

1005

1608

105

103

108

107

C685

0.1μ 25

C

107

1608

F

82μ 450

C001

C002

C003

C101

C102

C104

C105

C106

C107

C131

C006

C132

C134

C201

C203

C202

C206

C208

C302

C321

C322

C323

C324

C326

C327

C341

C342

C343

C403

C404

C411

C501

C502

C503

C531

C611

C612

C613

C617

AC275

AC250

16

25

10

16

0.1μ

220μ

0.1μ

680μ

1608

YXA

1608

50

ML

1608

VR

1608

1000p

0.1μ

4.7μ

0.1μ

0.01μ 16 C

C

97

1608

B

C402

0.1μ 25 C

C

107

1608

F

C682

100μ

ルビコン

C

50

C533

C151

CH

AC250

H HFC

C

0.01μ

25

0.01μ

C328

1005

0.1μ 16 C C F

108

C651

0.1μ 16 C

C

F

1005

108

C205

1608

1000p

50 C C B

103

F2D

1608

C

50

C532

1608

131

97

1005

1608

1005

1005 1005

1005

1608

123

120

121

105

104

103

104

100

107

108

107

108

25

C012

C011

AC250

F

16

C

F

B

F

C

F

16

22μ

10μ

0.022μ

0.01μ

C405

1608

VR

ZLH

125

122

124

90

DR

R

C

R

C

R

C

B

F

AC250

50

AC310

50

16

50

C

F

C

H R

H

F

CH

B

F

B

25

16

C

F

R

4700p

M

M M

M

M M

M

AC250

H HEC

C

0.01μ

C014

C013

AC250

M M

F

E

0.01μ

21

19

18

14

12

15

20

0.33μ 16

AC310

C740

C741

0.1μ

2525C

C

CCM

M

F

C691

C692

0.1μ 16 C

CM

108

1005

F

C640

107

1608

107

1608

F

1000p

1608

CM

C

1608

B

MCC

25 D

100μ

C912

C913

C911

25

50

0.1μ

M

LXZ

R

C534

C542

C541

C543

C544

M

C127

C110

C111

C113

C103

25

107

1608

C108

AC250

CHM

18

C641

50 C

CM

103

1608

B

0.1μ 16

C

CM

108

1005

F

M

MH

1000p

2200p

109

127

22

23

22

110

107

111

112

107

103

128

4700p

B

13

M

YXG

16

C211

MF

47μ

191

DRR

1608

0.1μ

C212

10725

F

CCR

1608

0.1μ

C213

10725

F

CCR

C652

0.1μ 25 C

CM

F

107

1608

1000p

100p

93

Capacitor

CAPACITOR

岡谷

LE 岡谷

CY

LE-MX

岡谷

LE-MX

R691

R692

C691

C692

RES602

0V

3

4

-

+

1

2

0V

12V

0V

OV

REC

SEND

R910

R911

R912

R913

R914

C911

C912

L911

L912

R915

C913

PC912

PC911

R740

R741

R743

C740

C741

12V-1

Vcc1

12V-1

Wired Remocon

PA-4P-Top(白)

32

1

4

5

6

0V

DIP-SW

1.Auto Restart OFF

2.CARD KEY

3.CARD KEY LOGIC

4.COOLING ONLY

5.HEATING ONLY

6.REMOTE CONTROLLER ID

0V

R901

R902

R907

R908

R903

R904

R905

R906

DSW1

Vcc1

0V

R831

R832

Q831

R834

R835

O

G

I

12V

C

D541

R545

R546

R547

C541

C542

C543

C544

IC541

Vcc1

5

4

2

3

10

3

4

1

2

1

CZ-10P-Top (Blk)

SW831

312

CN17

TP1

498

BZ

BZ681

R683

312 498567

567

S-KIBAN (Sensor PCB)

SS831(Humidity

Sensor)

Emergency/

Force Cooling

Withstand Voltage Test pin

CZ-9P-side

H-KIBAN (Dispaly)

R-KIBAN (Receiver)

ZH-4P-Side

C213

CN13B

C212

12

Unit

C211

+

-

R216

IRR

V

DD

GND

V

OUT

3

ZD211

Q212

R215

R217

4

LD1

12

3

4

C651

PA-4P-TOP(Red)

CN13

Rec.

ROOM THER.

HEX THER.

HUMI SENSOR

CURRENT CLEAN

PELTIER CURRENT

FAST FEED

TEST IND.

HEAT EXCHANGER

HEAT ONLY 5V

COOL ONLY 0V

AUTO RESTART

Lo:Use;Hi:Unused

FORCE COOLING

A/D INPUT

INRUSH CURRENT RELAY

POWER RELAY1

POWER RELAY2

BUZZER(2kHz)

DRAIN PUMP

7 SEGMENT

PROM(SDA)

2

E

cgedf

INTERFACE CHOPPER O/P(30kHz)

PROM

2

E

b

a

PROM(SCL)

2

E

SENSOR2

UNUSED

CERAMIC OSC 10MHz

GND

CPU RESET

0.1μF at Vss

SUB-CLOCK(OSC)

32.768kHz

REMOCON ID

UNUSED

STATIC-P

φ2

φ3

φ4

φ1

H-DEFLECT-1

H-DEFLECT-2

H-LINK CONNECTION

ABNORMAL HIGH VOLTAGE

HIGH VOLTAGE O/P

FLASH WRITE TERMINAL

MINUS ION

φ2φ4φ3

φ1

MODULATED LIGHT PWM O/P

UNUSED

CLEAN(STANBY)

CARD KEY SELECT

CARD KEY LOGIC

WIRED REMOCON TX

HA OUTPUT

UNUSED

HA I/P CARDKEY I/P

REMOCON TX

FILTER LAMP

OPERAT ION LAMP

TIMER LAMP

I/D FAN PWM O/P

UNUSED

Lo:OFF Hi:ON

POWERRECEIVING SYSTEM

WIRELESS RX

DRAINPUMP TEST

COMM RX

COMM TX

INSTALLAT ION/3-WAY

FAN MOTOR POWER

FRONT PANEL φ4

FRONT PANEL φ3

FRONT PANEL φ2

FRONT PANEL φ1

TEMP INDICATION O/P CHANGE ACTIVE Hi

UNUSED

H-LINK/DEBUG(TX)

H-LINK/DEBUG(RX)

I/D FAN RPM FEEDBACK

ABNORMAL WATER LEVEL

WIRE REMOCON RX

UNUSED

POWER(CLEAN)

UNUSED

SYMBOL

VALUE(Ω)

TOL

POWER (W)

FORM

ASSY PART#

REMARK

MOUNT

PCB

SYMBOL

VALUE(Ω)

TOL

POWER

(W)

FORM

ASSY PART#

REMARK

MOUNT

PCB

ASSY

PART#

ASSY

PART#

ASSY

PART#

REMARK

MOUNT

PCB

REMARK

MOUNT

PCB

VOLT (V)

SYMBOL SYMBOL

(μF)

VALUE

FORM

TYPE

CHAR

TEMP

FORM

MODEL NAME

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

SYMBOL

FORM

MODEL NAME

ASSY

PART#

REMARK

MOUNT

PCB

VOLT

(V)

SYMBOL

(μF)

VALUE

FORM

TYPE

CHAR

TEMP

SYMBOL

VALUE(Ω)

TOL

POWER

(W)

FORM

ASSY PART#

REMARK

MOUNT

PCB

6ー1

RAC-25/35FXBMODEL

6ー2

RAC-50FXBMODEL

6ー3

7ー1

1

2

3

EEPROM

AX-13D720)(

EEPROM

Relay drive circuit

Reversing valve

drive circuit

Electric expansion

valve drive circuit

Electric expansion

valve

Reversing valve

Outdoor

Fan motor

Is

Ip

Id

Ip

Id

(AX-12C870)

DC fan motor

drive circuit

Outdoor DC fan motor

drive circuit

Compressor

motor

Compressor

drive circuit

BLOCK DIAGRAM

INDOOR UNIT

OUTDOOR UNITPower source

1 O 230V 50Hz

Buzzer circuit

Indicating lamp

Vertical sweep motor (Small)

SUCTION

DEFLECTOR MOTOR

Operation

Timer

Indoor microcomputer

Stepping motor drive circuit

Outdoor microcomputer

Wireless remote

controller

Wireless receive

Reset circuit

Control

Power circuit

Room temperature

thermistor

Heat exchanger

thermistor

Oscillator clock

circuit

Indoor / Outdoor

interface circuit

Indoor / Outdoor

interface circuit

Power circuit

Indoor DC fan motor

M

Control power circuit

Reset circuit

Overheat thermistor

Defrost thermistor

Outdoor temperature

thermistor

Oscillator clock

circuit

L

N

/send circuit

RAF-25/35/50RXB

RAC-25/35/50FXB

MODEL

Infrared sensor

Vertical sweep motor (Big)

RAF-25/35/50RXB

MODEL

button

“ultra-Lo”

Operates at “Lo” regardless of the room temperature. Runs at “ultra-Lo” when thermo is off.

Operates at “Silent” regardless of the room temperature. Runs at “ultra-Lo” when thermo is off.

Operates at “Med” regardless of the room temperature. Runs at “ultra-Lo” when thermo is off.

1. Runs at “Hi” until room temperature reaches to “setting temperature-SFT

DSC” after operation is

started.

2. Runs at “ultra-Lo” when thermo is off.

button

PDCIN2 PDCOF2

“Med”, “Lo” “Silent” x 108% “Med”, “Lo” “Silent”

8-5.

8-3.

8-7.

8-6.8-4.

8-8.

Setting temperature

Room temperature

ON

Thermo judgment

Compressor

(Compressor stopped forcibly for 3 minutes)

Hi

Med

Lo

3

ON

OFF

SFTDSC

OFTMPC

0.66°C

FCAUT_L

FCAUT_H

Set to “ultra-Lo”, “Silent”, “Lo”, “Med”, “Hi”, “ultra-Hi” or “stop” depending on the room temperature, time and heat exchanger temperature. Set to “stop” if the heat exchanger temperature is “DNZKOF” during Thermo OFF. (When reach at “DNZKON”, fan speed set to “ultra-Lo” again.)

Set to “ultra-Lo”, “Silent”, “Lo”, “Med”, “Hi”, “ultra-Hi” or “stop” depending on the room temperature, time and heat exchanger temperature. Set to “stop” if the heat exchanger temperature is “DNZKOF” during Thermo OFF. (When reach at “DNZKON”, fan speed set to “ultra-Lo” again.) The fan speed is controlled by the heat exchanger temperature; the overload control is executed as in the following diagram:

Note:Single connection only.

Set to “ultra-Hi” when the compressor is running at maximum speed during hot dash or when recovered from defrosting.

When the compressor is running at maximum speed duringhot-dash or when recovered from defrosting.

In modes other than left

Heat exchanger temperature

DASUPHH

DASUPH

DASDNH

NORUPH NORUPL

NORUPS

NORDPH

NORDNL

NORDNS

Ultra-High High Med Low Silent

DASUPL DASUPS

DNZKON

90” Fan speed UP/DOWN delay time 90” Fan speed UP/DOWN delay time

DNZKOF

DASDNL DASDNS

BASIC MODE

8ー1

Table 1 Mode data file

MODEL RAF-25RXB RAF-35RXB RAF-50RXB

LABEL NAME VALUE

WMAX 6000 min

-1

6000 min

-1

6000 min

-1

WMAX2 6000 min

-1

6000 min

-1

6000 min

-1

WSTD 4000 min

-1

4550 min

-1

4800 min

-1

WJKMAX 3400 min

-1

3400 min

-1

4200 min

-1

WBEMAX 3200 min

-1

3200 min

-1

3400 min

-1

WSZMAX 3200 min

-1

3200 min

-1

3400 min

-1

CMAX 3600 min

-1

3800 min

-1

4900 min

-1

CMAX2 3600 min

-1

3800 min

-1

4900 min

-1

CLMXTP 30.00 °C 30.00 °C 30.00 °C

CSTD 2800 min

-1

3400 min

-1

4750 min

-1

CJKMAX 2200 min

-1

2200 min

-1

3200 min

-1

CBEMAX 1700 min

-1

1700 min

-1

2200 min

-1

CSZMAX 1700 min

-1

1700 min

-1

2200 min

-1

WMIN_CMPH 2800 min

-1

2800 min

-1

3200 min

-1

WMIN_CMPL 2800 min

-1

2800 min

-1

3200 min

-1

CMIN 1100 min

-1

1100 min

-1

1800 min

-1

STARTMC 60 Seconds 60 Seconds 70 Seconds

DWNRATEW 80 % 80 % 80 %

DWNRATEC 60 % 60 % 60 %

SHIFTW 0.00 °C 0.00 °C 0.00 °C

SHIFTC 0.00 °C 0.00 °C 0.00 °C

OFTMPC 1.00 °C 1.00 °C 1.00 °C

FCAUT_H 2.00 °C 2.00 °C 1.00 °C

FCAUT_L 0.66 °C 0.66 °C 0.00 °C

TEION 2.00 °C 2.00 °C 1.00 °C

TEIOF 9.00 °C 9.00 °C 9.00 °C

PDCIN2 50.00 °C 50.00 °C 50.00 °C

PDCOF2 44.00 °C 44.00 °C 44.00 °C

DNZKON 15.00 °C 15.00 °C 15.00 °C

DNZKOF 13.00 °C 13.00 °C 13.00 °C

DASUPHH 45.00 °C 45.00 °C 45.00 °C

DASDNHH 44.00 °C 44.00 °C 44.00 °C

DASUPH 44.00 °C 44.00 °C 44.00 °C

DASDNH 40.00 °C 40.00 °C 40.00 °C

DASUPL 40.00 °C 40.00 °C 40.00 °C

DASDNL 37.00 °C 37.00 °C 37.00 °C

DASUPS 35.00 °C 35.00 °C 35.00 °C

DASDNS 33.00 °C 33.00 °C 33.00 °C

NORUPH 49.00 °C 49.00 °C 49.00 °C

NORDNH 47.00 °C 47.00 °C 47.00 °C

NORUPL 45.00 °C 45.00 °C 45.00 °C

NORDNL 42.00 °C 42.00 °C 42.00 °C

NORUPS 42.00 °C 42.00 °C 42.00 °C

NORDNS 40.00 °C 40.00 °C 40.00 °C

SFTDSW 0.66 °C 0.66 °C 0.66 °C

SFTDSC 1.00 °C 1.00 °C 1.00 °C

DFTIM_OTP0 43 Minutes 43 Minutes 51 Minutes

DFTIM_OTP5 100 Minutes 115 Minutes 61 Minutes

DFTIM_OTP10 50 Minutes 50 Minutes 120 Minutes

DFMAX_STD 4300 min

-1

4550 min

-1

5400 min

-1

DFMAX_ATF 4000 min

-1

4000 min

-1

4000 min

-1

FNUPPW_C 30 min

-1

30 min

-1

30 min

-1

FUDICOL1_DSH 10 ° 10 ° 10 °

FUDICOL2_DSH 70 ° 70 ° 70 °

TYONTM_M 0.0 Hour 0.0 Hour 0.0 Hour

8ー2

Notes: (1) Condition for entering into Cool Dashed mode. When fan set to “Hi” or “Auto and when the compressor speed (P section) due t o temperature difference between setting

temperature (including the correction shift only) and room temperature is CMAX or higher.

(2) Cool Dashed will release when i) a maximum 25 minutes is lapsed and ii) room temperature is lower than set temperature –3°C (thermo off) and iii) when room temperature

has achieved setting temperature –1°C then maximum Cool Dashed time will be revised to 20 minutes. And iv) indoor fan is set to Lo and Med fan mode and v) change

operation mode. (3) During Cool Dashed operation, thermo off temperature is set temperature (with shift value) –3°C. After thermo off, operation continue in Fuzzy control mode. (4) Compressor minimum “ON” time and “OFF” time is 3 minutes. (5) During normal cooling mode, compressor maximum rpm CMAX will maintain for 60 minutes if indoor temperature is lower than CLMXTP. No time constrain if indoor tem-

perature is higher than CLMXTP. (6) When fan is set to “Hi”, compressor rpm will be limited to CSTD. (7) When fan is set to “Med”, compressor rpm will be limited to CJKMAX. (8) When fan is set to “Lo”, compressor rpm will be limited to CBEMAX. (9) During Cool Dashed, when room temperature reaches set temperature –1°C compressor rpm is actual rpm x DWNRATEC.

Temperature set for cooling and dehumiditying (value set by remote control + [SHIFTC])

8ー3

(1) Pressing the "POWERFUL" button will reduce the temperature setting by PWSFTC.

(2) The powerful operation is for 20 minutes after setting.

(3) Operation is continued forcibly thermo-ON for 20 minutes after the powerful operation is finished.

(4) Pressing the "START/STOP" button and "POWERFUL"button during powerful operation wil cancel the powerful operation. (5) If the sleep timer is set during powerful operation, the powerful operation will be canceled.

(6) When the powerful operation is set, the fan speed will be set to "HIGH" and the compressor's maximum

speed will be set to CMAX2 during powerful operation. The compressor's lower limit speed is CKYMIN_PW.

(7) The fan speed increases by FNUPPW_C.

(8) After the powerful operation is ended, the system automatically operates with the previous settings used before the powerful operati

2000

on.

8ー4

Notes:

(1) If the room temperature is (cooling preset temperature) - (1.33°C) or less after 30 seconds from starting the operation, the operation is done assuming as the preset temperature =

(room temperature at the time) - (2°C).

(2) The indoor fan is operated in the “Lo” mode. During thermo OFF indoor fan will be OFF for 5 minutes and ON for 1 minute.

(3) When the operation is started by the themostat turning ON, the start of the indoor fan is delayed 32 seconds after the start of compressor operation.

(4) The compressor is operated forcedly for 3 minutes after operation is started.

(5) The minimum ON time and OFF time of the compressor are 3 minutes.

8ー5

(1) Pressing the "POWERFUL" button will reduce the temperature setting by PWSFTSD. (2) The powerful operation is for 20 minutes after setting. (3) Operation is continued forcibly thermo-ON for 20 minutes after the powerful operation is finished. (4) Pressing the "START/STOP" button and "POWERFUL"button during powerful operation wil cancel the powerful operation. (5) If the sleep timer is set during powerful operation, the powerful operation will be canceled. (6) If the differential(the room temperature - the temperature setting) is "the differential

≧＜3 °C" after powerful setting , the compressor's

maximum speed during powerful operation will be set to SDMAX. Then the differential reduce "the differential

≦

2.33 °C" during powerful operation,the compressor's speed will be set to SDRPM. If the differential(the room temperature - the temperature setting) is "the differential 3 °C" after powerful setting , the compressor's minimum speed during powerful operation will be set to SDRPM.

(7) After the powerful operation is ended, the system automatically operates with the previous settings used before the powerful operation.

8ー6

Notes: (1) Condition for entering into hot dashed mode. When fan set to "Hi" or "Auto" and i) room temperature is 18 or less, and ii) outdoor temperature is 10 or less,

and iii) compressor speed (P section) due to temperature difference between setting temperature(including shift value only) and room temperature is WMAX

or more. (2) The maximum compressor speed period during hot dash is finished when ) room temperature has reached the setting temperature + SFTDSW. ) thermo off. (3) During hot dashed operation, thermo off temperature is setting temperature (with shift value) +3 . After thermo off, operation continue inn Fuzzy control mode. (4) Minimum "ON" time and minimum "OFF" time of compressor operation is 3 minutes. (5) During normal heating mode, compressor maximum rpm WMAX will maintain for 120 minutes. No time limit constrain if room temperature is 18 or less and

outdoor temperature is 2 or less. (6) During preheating or defrosting or auto fresh defrosting mode, indoor unit operation lamp will blink at interval of 2 seconds "ON" and 1 second "OFF". (7) When heating mode starts, it will enter into preheating mode if indoor heat exchanger temperature is less than YNEOF + 0.33 . (8) When fan is set to "Med" or "Lo" or "Silent", compressor rpm will be limited to "WJKMAX" or "WBEMAX" or "WSZMAX". (9) During "Ultra-Lo" mode, if room temperature is 18 or less, indoor fan will stop. If room temperature is 18 + 0.33 or more, fan will continue in "Ultra-Lo" mode.

However, "Ulrta-Lo" mode during preheating or preheating after defrosting does not stop if room temperature is 18 or less. (10) During hot dashed or outdoor temperature is -5 or less, compressor rpm is WMAX2. (11) During hot dashed, when room temperature reaches setting temperature + SFTDSW compressor rpm is actual rpm x DWNRATEW.

iii

Heating set temperature (remote control set temperature + [SHIFTW])

8ー7

FCLN_SUF_PP_MAW_NLCF

CLNCMP

Silent button

WSZMAX/CSZMAX

Compresson

speed

Indoor

fan

Outdoor

fan

SILENT

Notes:

Can’t set POWERFUL and SILENT at the same time.

8ー8

(1) Pressing the "POWERFUL" button will increase the temperature setting by PWSFTW.

(2) The powerful operation is for 20 minutes after setting.

(3) Operation is continued forcibly thermo-ON for 20 minutes after the powerful operation is finished.

(4) Defrost is inhibited for 20 minutes after the start of the powerful operation.

(5) Pressing the "START/STOP" button and "POWERFUL"button during powerful operation wil cancel

(6) If the sleep timer is set during powerful operation, the powerful operation will be canceled.

(7) When the powerful operation is set, the fan speed will be set to "HIGH" and the compressor's

maximum speed will be set to WMAX2 during powerful operation. The compressor's lower limit

(8) After the powerful operation is ended, the system automatically operates with the previous settings

speed is WKYMIN_PW.

used before the powerful operation.

the powerful operation.

Setting Defrosting Inhibit Period

DFTIM_OT P5

DFTIM_OT P0

DFTIM_OTP 10

Time

Outdoor temperature

–10 – 5˚C

0

˚C

Notes: (1) The first inhibit time after operation start is set to DFTIM_FST. (2) From the second time onwards, the inhibit time is set according to the time required for

defrosting. Reverse cycle operation time

≧ ＜

[DEFCOL] : DEFTIM_COL is set.

Reverse cycle operation time

[DEFCOL] : The time corresponding to outdoor tempera-

ture is set.

9

STARCPIL

i

ii

(1) (2) (3)

(4) Outdoor fan speed :

(5) Compressor start control : Same as Basic Heating operation

(6) Compressor speed :

(7)

Same as Basic

Heating operation

(Remote control set temperature + SFTLVHM)

8ー9

RAF/C-25R/FXB RAF/C-50R/FXBRAF/C-35R/FXB

Reversing valve defrosting

Over defrosting inhibit period

Fan speed set to "Hi"

Preheating released

Med

Lo

Reversing valve(cooling "on" mode)

Deceleration period

20' MAX.

3' MAX.

Preheating

Preheating released

Reversing valve defrosting

Start/Stop button

Defrost signal

Preheating judgment

Indoor fan

Outdoor fan

Hi or Lo

Operation lamp

Ultra-Lo

Hi

15' or more

Auto fresh defrosting

Stop

Reverse cycle period

20' MAX.

Over defrosting inhibit period

Start/Stop button

Fan speed set to "Hi"

Defrost signal

Preheating judgment

Preheating released

Indoor fan

Hi

Med

Lo

Ultra-Lo

Outdoor fan

Operation lamp

Reversing valve(heating "on" mode)

Hi or Lo

Deceleration period

Reverse cycle period

20' MAX.

3' MAX.

Preheating

Preheating released

Stop

15' or more

Auto fresh defrosting

Hi or Lo

20

8ー10

9ー1

REFRIGERATING CYCLE DIAGRAM

RAF-25/35RXB RAC-25/35FXB

MODEL

COOLING CYCLE

INDOOR UNIT

OUTDOOR UNIT

HEATING CYCLE

INDOOR UNIT

OUTDOOR UNIT

ø8.0

ø12.7

Silencer

Indoor heat exchanger

ø7.0

ø12.7

Silencer

ø8.0

ø12.7

Silencer

Indoor heat exchanger

ø7.0

ø12.7

9ー2

COOLING CYCLE

INDOOR UNIT

OUTDOOR UNIT

HEATING CYCLE

INDOOR UNIT

OUTDOOR UNIT

RAF-50RXB

RAC-50FXB

MODEL

REFRIGERATING CYCLE DIAGRAM

ø8.0

ø12.7

Silencer

Indoor heat exchanger

ø7.0

ø12.7

Silencer

ø8.0

ø12.7

Silencer

Indoor heat exchanger

ø7.0

ø12.7

10ー1

Procedure for Disassembly and Reassembly <INDOOR UNIT> RAF-25/35/50RXB

Clean the air filter, as it removes dust inside the room. Be sure to clean the filter once every two weeks so as not to consume electricity unnecessarily.

PROCEDURE

Open the front panel.

• To open the front panel, use the remote controller to stop unit operation. Then press at the top left and right corners of the front panel.

• Grasp the left and right sides of the front panel and open it toward you.

1

Remove the filters.

(Front side 2 pieces, upper side 2 pieces, total 4 pieces.)

2

Remove dust of the filters using a vacuum cleaner.

• After using neutral detergent, wash with clean water and dry in shade.

3

Attach the filters.

• Attaching the filters. (Front side 2 pieces, upper side 2 pieces, total 4 pieces.)

4

Close the front panel.

• To close the front panel, press at the top left and right corners of the front panel.

• Press the upper center part of the front panel to close properly.

5

Upper side filter

Front side filter

Removing

Press the hook found at the tip of the resin band installed inside the front panel’s right section to remove the resin band.

• Be sure to use both hands to grasp the front panel when removing it or attaching it.

• The front panel may be installed up or down to suit user preference.

Pull the front panel down toward you and once fully open, pull it to remove.

Attach three front panel bearings to the axis of the front cover. (Set the hook to face up.)

Insert the tip of the resin band into the hole of the protrusion inside the right section of the front panel.

Resin band

Hook

Front cover

Front panel

Resin band

Attaching

1. AIR FILTER

2. HOW TO INSTALL AND REMOVE THE FRONT PANEL

10ー2

① ②

Lift up the front panel and latch the claws

at firmly the lower part of rear of the front panel. Then remove 3 screws.

③

Ta ke off 2 screw caps at the lower part of

the horizontal air deflector and remove 2 screws. Then leave the upper louver in open position.

①

Set the upper louver in open position.

②

(4 places) to the insertion groove of the

Insert the front cover fixing claws

cabinet and put the upper louver through to the front cover frame.

③

lower part of front cover frame and insert

Put the horizontal air deflector to the

After fixed the front cover, fix back all the

to the cabinet.

screws in order.

④

Hold both sides of the lower part of front

cover and pull down towards an oblique direction.

4. Install the front cover

3. Remove the front cover

Latch

Screw

Screw Cap

Upper Louver

Horizontal Air Deflector

Lower Flame

Front Panel

Front Cover

Front Cover Fixing Claws (4 places)

Claw

Cabinet

Push the latch at both sides to open the front panel. Pull out the filter and remove 3 screws.

10ー3

5. INDICATING P.W.B.

(1) Remove the front panel and the front cover. (2) Remove the three fixing screws of the suction frame. (3) Remove the one fixing screw of the indicating P.W.B. case. (4) Slide the indicating P.W.B. case to the right while removing it from the suction frame.

6. ELECTRICAL PARTS CASE

(1) Remove the front panel and the front cover. (2) Remove the two fixing screws of the electrical parts case.

Suction frame fixing screws

Suction frame

indicating P.W.B.

indicating P.W.B. fixing screw

Electrical parts case

Screw for earth

Fixing screws

Electrical parts case

10ー4

7. DISCHARGE FRAME

(1) Remove the front panel and the front cover. (2) Remove the two fixing screws of the discharge frame. (3) Remove the screw on the rat prevention cover. (4) Remove the hook that is the fixation of a lower center part of Discharge frame. (5) Lower the rear side of the discharge frame, remove the tab on the interfit section, and then pull out the discharge frame

towards you.

8. DISCHARGE FRAME AUTO SWEEP MOTOR

Cabinet

Interfit hole

Discharge frame tab

Rat prevention cover

Light receiving unit

Auto sweep motor (1)

Auto sweep motor (2)

Rat prevention cover screw

Discharge frame fixing screws

Fixation hook

Gear motor for lower air deflector

10ー5

9. FAN MOTOR AND TANGENTIAL AIR FLOW FAN

(1) Two screws that are the fixation of evaporator are removed. (2) The tab where the left side of evaporator is fixed is removed. (3) Evaporator is lifted up and remove.

(4) Two screws that is the fixation of fan-motor support is removed, and fan motor support is removed.

(5) The tangential air flow fan and fan motor are fixed with screw. Please loosen screw when you remove.

Fixation tab

Evaporator

Fixation screws

Fan motor support fixation screws

Fan motor

Fixed screw

Fan motor support

Tangential air flow fan

10ー6

Radiation fin fixing screw

P.W.B. fixing screw

OUTDOOR UNIT

1. Electrical parts

(1)Remove the upper cover fixing screws and lift

the cover to remove it. (2)Remove the service valve cover. (3)Remove the terminal plate cover.

(4)Remove the right side cover.

(5)Remove the electrical box fixing screws and

GND wire fixing screw.

(6)Remove P lock which binds lead wires.

(8)Remove P.W.B. fixing screws (2 locations) and

radiation fin fixing screws (5 locations), and remove the P.W.B. from the support.

(7)Set the electrical box upside down.

MODEL RAC-25FXB, RAC-35FXB

10ー7

OUTDOOR UNIT

1. Electrical parts

(1)Remove the service value cover lock screws

and lower the cover to remove it. (2)Remove the top cover lock screw and raise the

cover to remove it.

(3)Remove the front cover lock screw. (4)Lower the right side of the front cover and pull

it forward. Then, remove the cover from the

hook. (5)Pull the right side of the front cover a little and

pull up the left side to remove it from the hook.

(6)Remove each connector and earth cable from

the lead wire. Then,remove the electrical box .

MODEL RAC-50FXB

11ー1

Switching power circuit

Fig. 1-1

· An AC power supply from outdoor unit passes through the 3.15 A fuse, varistor (VA001), and noise filter circuit and rectified and smoothed by DB1 and C003 to become a DC current 325 V. It is then supplied to indoor fan motor drive circuit,and switching power circuit.

· The switching power circuit, as controlled by IC001, drives the primary winding of the transformer (T001) to produce a specified voltage at the output winding. [The output terminal (pin ) of IC001 has a switching voltage. But it changes in

voltage peak and oscillation period depending on the power load. usually,the oscillation frequency when the air condition operation is about 67 kHz. In the standby state, the oscillation frequency is lowered to a level as low as 20 kHz or so to reduce the standby power.]

①

· The outputs of the output windings of the transformer is rectified and smoothed to become DC voltages at primary 18.5 V, 12 V, and 8.5 V respectively. The primary 18.5 V is supplied to the drive circuit of the indoor fan motor, the 12 V is supplied to each vane motor and to the drive circuits of the cleaning unit driving motor and other equipment, and the 8.5 V is adjusted to a stable 5 V by the 3-terminal regulator IC (IC101,IC103) and supplied to the microcomputer peripheral circuit.

If a failure in a part or circuit has produced an abnormal current in the power supply, the 3.15 A fuse will melt down to prevent further damage. If the 3.15 A fuse melts down, check the indoor fan motor, switching electrical circuit, and other components and replace any defective part.

If an abnormally high voltage is applied to the power supply, the 3.15 A fuse and varistor (VA001) will prevent further damage. If a high voltage results in the 3.15 A fuse melted down, the varistor (VA001) should have deteriorated and destroyed. Therefore replace it at the same time.

The primary circuit of the transformer (T001) has a voltage to ground. Guard against electric shocks.

Check

Caution

1. Control power circuit

DESCRIPTION OF MAIN CIRCUIT OPERATION

MODEL RAF-25/35/50RXB

11ー2

2. Reset Circuit

Timing chart

C501

R501

C502

5

3

IC501

1

2

5V

R502

R503

11

0V

5.0V

4.4V

5.0V

4.2V

pin of IC501 supply voltage

RES canceling voltage

RES detecting voltage

pin of IC501 output voltage

or

pin of microcomputer

Reset circuit is to initialize the indoor unit microcomputer when switching ON the power or after recovering from power

failure.

Microcomputer operates when

pin of the indoor unit microcomputer (reset input) is "Lo" for resetting and "Hi" for heating.

Waveform of each part when switching ON the power and when shutting down is shown in the Fig. 2-2.

After switching ON the power,

pin of IC501 supply voltage and pin of microcomputer becomes Hi when DC5V line

rises and reaches approximately 4.4V or higher. Then, resetting will be cancelled and microcomputer starts operating. After shutting down the power,

pin of IC501 supply voltage and pin of microcomputer becomes Lo when DC5V line

falls and reaches approximately 4.2V or lower. Then, the microcomputer will be in reset condition.

Fig.2-1

Fig.2-2

Reset

Microcomputer

Voltage

C612

11ー3

3. Drive circuit of the indoor fan motor

The indoor fan motor receives VDC (motor drive power supply), VCC (power supply for the control circuit inside the motor), and VS (speed command voltage) from CN2. The indoor fan motor returns an FG signal of a frequency that matches the rotation speed.

VCC stabilizes the primary 18.5 V power supply into 15 V by using Q201 and supplies it.

While on standby for a remote control signal, the Q201 shuts down the VCC and reduces the standby power.

The VS receives a command voltage from the microcomputer (IC601). The VS terminal undergoes an analog voltage that matches the Lo level time ratio of the pulse signal from pin

45

of the microcomputer. (See Fig. 3-2.)

The FG terminal undergoes a signal of 12 pulses per revolution of the motor shaft. By counting the pulse rate, the microcomputer (IC601) recognizes the motor speed, thereby performing feedback control.

< Typical circuit waveform >

of microcomputer (between 0 V and pin

45 )

FG voltage of fan motor (between pins 4 and 7 of CN2)

When slow(700min

-

1

)

1.7ms.

When fast(1200min

-

1

)

1.7ms.

5V 5V

When slow(700min

-

1

)

7.1ms.

When fast(1200min

-

1

)

15V 15V

4.2ms.

1300min

-

1

2.1V 5.4V

Fig. 3-1

Fig. 3-2

Indoor fan motor

Primary 325V

Primary 18.5V

Power siganl of indoor fan(from pin 57 of microcomputer)

Primary 0 V

Rotation speed feedback signal (to pin of microcomputer)

Output signal of indoor fan (to pin of microcomputer)

68

45

< The circuit check (For test) >

Name Test point Test voltage

CN2 1 pin- 4 pin

Motor drive power

Motor contorl power

Motor speed signal

Motor rotation speed debug

CN2 5 pin- 4 pin

CN2 6 pin- 4 pin

CN2 7 pin- 4 pin

About 325V

About 15V

About 2-6V

About 7.5V

* The voltage above is all motor operation vol. when yon start the test, take care of your connector, do not touch the different pin together. * The voltage of pin 6 - pin 4 , pin 7 - 4 maybe diffierent from above.

< Pin 6 - Pin 4 voltage one example >

Vsp voltage

* The different mode maybe have diffevent FAN rotation speed.

314

Voltage at pin 45

11ー4

Approx.

420 s.

5V

[Typical communication waveform]

Approx. 400 ms.

Enlarged reception waveform

Fig. 5-2

An infrared signal from the remote control unit is converted to an electrical signal by the remote control light-receiving unit (IRR) and is received by the microcomputer. Data is transmitted as digital data 0 and 1 by changing the interval of the basic pulses at about 420

s.

Remote control reception input (pin of microcomputer)

Beep (reception tone)

INPUT

+

GND

66

computer. After the amplitude of this signal has been set to 12Vp-p by a transistor

r.

R640

C632

The indoor fan motor and drive circuit are connected to the primary power supply. They therefore have voltage to ground. Guard against electric shocks.

ny circumstances detach or reattach a connector. Any such practice would

cause a high voltage to r

fan motor and board circuit being destroyed. (Check the discharge of

the C003 before detaching or reattaching the connectors.)

Caution

5

Vcc1(5V)

R822

R823

IC821

C822

C823

VDD

66

11ー5

The temporary switch is used to operate the air conditioner temporarily when the wireless remote control is lost or faulty.

The air conditioner operates in the previous mode at the previously set temperature. However, when the power switch is set to OFF, it starts automatic operation.

R403

5V

R406

C404

90

1

2

3

4

5

0

0 10 20 30 40

8. Room Temperature Thermistor Circuit

A room temperature thermistor circuit is shown in Fig. 8-1. According to room temperature, the voltage of point becomes as it is shown in Fig.8-2.

Microcomputer

Room Temperature Thermistor

Voltage of point (V)

( )

Room temperature

Room temperature input

Fig. 8-1

Fig. 8-2

A

0V

5V

2

0

1

010203040

3

4

5

-10

R402

C403

R407

91

9. Heat Exchanger Thermistor Circuit

Heat exchanger temperature is noticed inside the room (1) Preheating (2) Low-temperature defrosts at cooling and dehumidification operation time. (3) Not working of reversing valve or detection of opening of heat exchange thermistor is controlled.

According to heat exchange temperature, the voltage of point becomes as it is shown in Fig. 9-2.

Heat exchanger thermistor

Microcomputer

Heat exchanger input

Fig. 9-1

Fig. 9-2

Voltage of point (V)

Heat temperature ( )

A

When power is supplied, the microcomputer reads the data in IC531 (E PROM) and sets the preheating

2

activation value and the rating and maximum speed of the compressor, etc. to their initial values. Data of self-diagnosis mode is stored in IC531; data will not be erased even when power is turned off.

Fig. 6-1

Fig. 7-1

TEMPORARY SW

MICROCOMPUTER

R405

SW211

Temporary

switch

0V

C405

R663

5V

6. Initial Setting Circuit (IC531)

7. Temporary Switch Circuit

100

11ー6

10

R901

R904

R641

R907

R908

R694

R902

R695

R741

R740

R642

DSW1

R903

R905

R906

11ー7

If a cable poorly inserted in the indoor terminal board or some other failure overheats the terminal board and the temperature fuse of the terminal board blows out, the power to the indoor communication circuit will be shut down to stop the communications function. (In that case, the failure will be displayed by the timer lamp blinking 3 times.)

If communication fails between the indoor and outdoor units for some reason, the product will give a self-diagnosis display either by "the timer lamp blinking 3 times" or "the timer lamp blinking 12 times" depending on the cause.

· Indoor and outdoor communications are conducted by using lines 2 and 3 of F cable. Line 2 of F cable is shared with a

transmission channel that powers the outdoor unit.

· Data communicated between the indoor and outdoor units are outputted from the microcomputer as serial signals and are

transmitted as demodulated by a 30 kHz carrier wave. (Both the indoor and outdoor microcomputers directly output a signal demodulated at 30 kHz.)

< Typical communication waveform >

Signal between F cables 1 and 2

< Enlarged waveform >

Fig. 11-2

Fig. 11-1

Signal sent by indoor microcomputer

Signal sent by outdoor microcomputer

Signals sent by indoor and outdoor microcomputers

Signal between F cables and

The unit is receiving a signal that it sent (it is not used particularly as a signal).

Outdoor reception circuit

Outdoor transmission circuit

Outdoor microcomputer

Inverter circuit

Indoor unit side Outdoor unit side

Outdoor reception input

Outdoor transmission output

Indoor transmission circuit

Indoor unit reception circuit

Indoor/outdoor communication chopper output (30kHz)

Indoor transmission output

Indoor reception input

Indoor microcomputer (IC601)

Indoor side

Microcomputer transmission signal

Microcomputer reception signal

Microcomputer transmission signal

Microcomputer reception signal

Outdoor side

Approx. 200 ms.

Check

5ms. DIV5ms. DIV

C302

0V

11. Indoor/outdoor communication circuits

3 3

1 1

2 2

30 kHz demodulated waveform

12

5ms.

DIV 5ms. DIV

11ー8

[Connector circuit waveform while the motor runs]

Voltage waveforms of different phases as viewed from

the OV line while the motor rotor is turning counterclockwise

as viewed from the shaft side

4 terminal

3 terminal

2 terminal

1 terminal

5 ms. or 10 ms.

Fig. 12-2

· Each stepping motor runs as excited in 1 or 2 phases at 100 PPS or 200 PPS.

· The excitation pattern passes the microcomputer (IC601) and then the driver IC and excites the coil of each stepping motor.

Fig. 12-1

12. Stepping motor drive circuit

· Some models not need to install the horizontal sweep motor.

VERTICAL SWEEP MOTOR1(Small)

SUCTION DEFLECTOR MOTOR

M

HORIZONTAL SWEEP MOTOR ø4

VERTICAL SWEEP MOTOR2(Big)

CN15

CN19

HORIZONTAL SWEEP MOTOR ø3

HORIZONTAL SWEEP MOTOR ø2

HORIZONTAL SWEEP MOTOR ø1

VERTICAL SWEEP MOTOR1 ø4

VERTICAL SWEEP MOTOR1 ø3

VERTICAL SWEEP MOTOR1 ø2

VERTICAL SWEEP MOTOR1 ø1

VERTICAL SWEEP MOTOR2 ø4

VERTICAL SWEEP MOTOR2 ø3

VERTICAL SWEEP MOTOR2 ø2

VERTICAL SWEEP MOTOR2 ø1

IC601

12V

M

11ー9

LN

300-330

AB

Main parts

C021-C023,500 ,450V)

RAC-25/35FXB

MODEL

11ー10

2. Power circuit (Low voltage)

Fig. 2-1

The 230V AC voltage is rectified to DC voltage (B-12V,16V,12V,5V) pass through switching control IC (ICI), switching transformer. (1) B-12V Power supply for electrical expansion valve. (2) 16V Power supply for IPM driver circuit of compressor and fan motor, IGBT action. (3) 12V Power supply for 4 way valve relay, power relay, inrush current relay,motor current amplification, (4) 5V Power supply for microcomputer, peripheral circuits.

11ー11

C

IC4 DC/DC convertor IC (DC12V DC5V).

001,C002,C003,C004,C005,C011,C013,C014，NF1

1,2,5,8.

L105 (JUMPER) D110 (EARTH)

L104 (JUMPER) D110 (EARTH)

L103 (JUMPER) D110 (EARTH)

R120 B-12V R120 B-0V)

B-12V O/P

Expansion valve

Main parts

1

2

3

0.5V

1.5V

1.0V

15.5

2.5V

1.0V

13

11ー12

6

Reversing valve

12V

HIC P.W.B

28

Control P W B

AC230V

SK1

Point

operation mode

Cooling

Heating

Usual cooling Hi

Lo

Hi

0V

12V

0V

AC230V

CN2 1 - CN2 4

0V

AC230V

Usual heating

Defrost

HIC 34 pin - 0V

This model reversing valve control used to control the realy ON/OFF of the revesing valve, and also control the coil of the reversing valve ON/OFF. The realay ON/OFF has different type when in the different operation mode. You can see each operation mode as fllows. If the reaversing valve not connected or all the condition not the same as follow, it may be something wrong with the reversing valve circuit.

micon

4

1

RL3

RL3( coil)

1134

4.Reversing valve control circuit

28

Fig.4-1

11ー13

5

5-1

10

11

12

74

70

70 74 75

5-1

HIC P.W.B

74

70

75

11ー14

2.Failure phenomenon: The product will not receive a remote control signal.

Situation

The product does not receive a remote control signal. It is not very responsive.

(The product does run normally in response to the emergency operation switch.)

Estimated failure

locations

· Remote control failure, remote control low battery level, remote control poorly set

· Remote control light-receiving unit

· Connector loose, wire break

· Normal product (external factors: the remote control units for lighting equipment and other equipment, electrical noise, etc.)

Cautions

Diagnosis flow

Initiating troubleshooting

· Even if the product is trouble-free, a factor coming from outside the product may hamper the reception of signals from the remote control unit.

· Batteries may decline in capacity at low temperatures. Old batteries decline particularly much in voltage in the morning and evening of winter, resulting in the poor arrival of remote control signals. Instruct your users to use new alkaline batteries.

Does the remote control unit have a sufficient battery capacity?

If the liquid crystal display becomes extremely faded when a remote control signal is sent, replace the batteries.

No

Press the reset switch of the remote control unit, then conduct another operation check. Has the product worked?

Yes

Instruct your users to be sure to press the reset switch after replacing the batteries.

Yes

Did you identify a failure phenomenon?

Go on to "how to identify sources of jamming in the reception of remote control signals" .

No

Yes

Conduct an operation check according to "checking the remote control". Is the remote control normal?

No

Yes

Replace the "remote control unit".

No

Is the CN16 securely connected?

Yes

Reconnect the connector correctly.

Yes

Check for jamming due to an external factor while referring to "how to identify sources of jamming in the reception of remote control signals" . Is there jamming from outside?

Cope with jamming according to its cause.

No

Replace the "indicating P.W.B".

Cautions in replacing the indicating P.W.B Be sure to replace the indicating P.W.B. components.

11ー15

2A Fuse

DC300

-330V

7.

7-1

11ー16

2A

(

DC300-330V

)

11ー17

LN

300-330

AB

MODEL RAC-50FXB

11ー18

300-330

C021-C023,500 ,450V)

16V

R249

33 ACT

IP CUT

30

11ー19

2. Power circuit (Low voltage)

Fig. 2-1

The 230V AC voltage is rectified to DC voltage (B-12V,16V,12V,5V) pass through switching control IC (ICI), switching transformer. (1) B-12V Power supply for electrical expansion valve. (2) 16V Power supply for IPM driver circuit of compressor and fan motor, IGBT action. (3) 12V Power supply for 4 way valve relay, power relay, inrush current relay,motor current amplification, (4) 5V Power supply for microcomputer, peripheral circuits.

11ー20

C

IC4 DC/DC convertor IC (DC12V DC5V).

001,C002,C003,C004,C005,C011,C013,C014，NF1

1,2,5,8.

L105 (JUMPER) D110 (EARTH)

L104 (JUMPER) D110 (EARTH)

L103 (JUMPER) D110 (EARTH)

R148 B-12V

B-12V O/P

Expansion valve

Main parts

1

2

3

0.5V

1.5V

1.0V

15.5

2.5V

1.0V

13

1 “ - ”04C

11ー21

6

Reversing valve

12V

HIC P.W.B

28

Control P W B

AC230V

SK1

Point

operation mode

Cooling

Heating

Usual cooling Hi

Lo

Hi

0V

12V

0V

AC230V

CN2 1 - CN2 4

0V

AC230V

Usual heating

Defrost

HIC 28 pin - 0V

This model reversing valve control used to control the realy ON/OFF of the revesing valve, and also control the coil of the reversing valve ON/OFF. The realay ON/OFF has different type when in the different operation mode. You can see each operation mode as fllows. If the reaversing valve not connected or all the condition not the same as follow, it may be something wrong with the reversing valve circuit.

micon

4

1

RL3

RL3( coil)

11

4.Reversing valve control circuit

28

Fig.4-1

28

11ー22

5

5-1

74

70

70 74 75

5-1

HIC P.W.B

40

41

42

74

70

75

11ー23

6. Electric expansion valve circuit

5

13

14

15

16

4

3

2

1

68

67

66

65

RED

14

12

10

7

6-1

8

6-1

6-2

22

23

24

2

11ー24

2A Fuse

DC300

-330V

7-1

7.

11ー25

2A

(

DC300-330V

)

12ー1

Automatic operation

During heating, I turned off the product by using the START/STOP button. But the “operation lamp” is blinking and the outdoor unit is running.

Q1

Auto-fresh defrost

The product stops during heating even though it is set to “30℃”.

Q3

The product begins with a “Low” during heating even though set to “Hi” or “Med”.

Q2

The product sometimes fails to produce a wind during heating.

Q1

Heating operation

The indoor unit produces a noise that goes “shaaahhh” during dehumidification.

Q1

Dehumidification

The compressor sometimes stops during cooling.

Q1

Cooling operation

A1

Check if the heat exchanger of the indoor unit is covered with frost. Wait for 3 to 4 minutes until the frost disappears.

A1

That is a noise produced by refrigerant flowing through the pipe.

A1

Defrosting is in progress. Wait 5 to 10 minutes until the dew on the outdoor unit disappears.

At the first of the heating, the product will run for 30 seconds with a

“Low”. When set to “Hi”, the product will begin with a

“Low” operation, producing a “Med” for 30 seconds, and then

switch to “Hi”.

A2

A3

When heating is conducted despite the high outdoor temperature, the product may stop to protect its equipment.

The “auto-fresh defrost” should be working. When stopped, the product will check its outdoor unit for frost and, if there is any frost, conduct defrosting and then stop operating.

A1

Q1 A1

Cooling when the room temperature is low may cause the heat exchanger of the indoor unit to gather frost.

SERVICE CALL Q&A

2A2Q

AQ

Cold air comes out during a dehumidifying operation.

The operation does not stop even by setting the temperature higher than room temperature on the remote controller.

To improve the dehumidification efficiency performs quiet fan operation. Therefore the air is cold and it is not a malfunction.

It sets to perform dehumidifying operation by setting the temperature slightly lower than remote controller setting.

33

RAF-25/35/50RXB

MODEL

12ー2

A1

This does not abnormal. It is because the cold wind prevention is working.

In “automatic fan speed” mode, the indoor fan changes from “Hi” to “Med” to “Low”.

Common, etc.

Q1

Q2

At operation startup, the outdoor unit becomes noisy.

The outdoor unit sometimes changes in its noise.

Q3

Q4

There is a difference between the temperature setting and room temperature in room temperature control.

The product will not produce wind right after startup.

Q5

Q6

I performed internal cleaning, but didn't succeed in controlling the mold in the room.

Internal cleaning will clean the inside of the indoor unit of the air-conditioner, thereby controlling mold generation. This will not control the mold in the room.

A6

After turning ON the power switch or breaker, setting the product to heating or dehumidification will activate a preliminary operation for 1 minute. At that time, heating will cause the operation lamp to blink. This is not a sign of a breakdown.

A5

The room structure, air stream, or other factor may cause a gap between the room temperature setting and actual room temperature. If there is any difference between the setting and the room temperature, adjust the temperature setting to match the living space to a comfortable temperature.

A4

The difference between the thermometer temperature setting and room temperature will change the rotation speed of the compressor. This is not a sign of a breakdown.

A3

At operation startup, the product will set the rotation speed of the compressor to full power and increase its heating and cooling capacity, resulting in a slightly higher noise level. This is not a sign of a breakdown.

A2

In fan speed “automatic” mode, the product will sense the heat exchange temperature and, when the temperature goes down, the product will automatically switch to “Hi” to “Med” to “Low”.

12ー3

Q1

The timer will not become set.

The current time display will disappear at once.

Q2

Q3

I made a timer “reservation”. But the time setting has disappeared.

I tried to set the “sleep” timer while the ON timer is reserved. But it will not set itself to a desired time.

Q4

The time set in the “sleep” timer can be set with a time up to the time set with the ON timer. If the end time of the “sleep” timer is past the time set with the ON timer, you cannot make that setting.

A4

Is the time not past the reserved time? The set time disappears when the current time reaches the reserved time.

A3

The current time disappears 10 seconds later. The timer set display is given priority.

A2

Have you set the product to the current time? The timer cannot be set unless it is set to the current time.

A1

When set to the current time setting, the reading blinks for about 3 minutes.

Wireless remote control

I set the “sleep” timer during operation. But the indoor fan will not run (it will not produce wind) wind intensity will not change.

Q5

I tried to change the setting with the “room temperature” button of the remote control unit in vain.

6A6Q

You cannot make this setting when the product is in “air purification” mode. Moreover, you cannot set the product to a desired setting when quick laundry or dew control is being performed with the “auto” or “quick dehumidification” button.

This occurs when the room temperature and humidity have reached their settings during dehumidification and the air-conditioner is in a pause. The product will begin again to run within about 3 minutes. The product will run with the wind speed set to a “quiet” state.

A5

13ー1

TROUBLE SHOOTING

RAC-25/35/50FXB

MODEL

Note that the 0 V line of the outdoor electrical parts and the primary power circuit of the indoor electrical parts have voltages to ground as illustrated in the right-hand figure.

When conducting a check with an oscilloscope or something similar, do not ground the oscilloscope. Note that the oscilloscope will be subjected to voltages as illustrated in the figure above.

Warning

Power supply

Power circuit

Control circuit

Inspection instructions

Indoor fan motor

Outdoor ElectricalIndoor Electrical

1

2

3

L N

0V line

Power circuit

Compressor motor

Voltage between each part and ground

Grounding voltage

Potential at

points

Potential at

points

320V

Potential at points

1Φ 230V 50Hz

Grounding

Do not under any circumstances get your hand or metal part into contact with the cabinet.

Danger!!!

Do not install a grounding.

13ー2

WARNING

Do not use a soldering iron with transformer: Otherwise, thermal fuse inside transformer will be blown.

DISCHARGE, PROCEDURE AND POWER SHUT OFF METHOD FOR POWER CIRCUIT

Caution

Voltage of about 350 V is charged between the terminal of smoothing capacitors (375μF x 2). During continuity check for each circuit part of the outdoor unit, be sure to discharge the smoothing capacitors.

Discharge Procedure

1. Turn off the power.

2. After power is turned off, wait for 10 minutes or more. Then, remove electrical parts cover and apply soldering iron of 30 to 75 W for 15 seconds or more to IPM(25) and IPM(33) terminals on the main P.W.B. as shown in the figure below, in order to discharge voltage in smoothing capacitor.

LEAD WIRE

SOLDERING IRON (30 TO 75W)

RAC-25FXB, RAC-35FXB

RAC-50FXB

LEAD WIRE

SOLDERING IRON (30 TO 75W)

13ー3

FIXING SCREW

CN2

CN15

CN11

CN17

CN19

CN4

CN13

Removing the indicating P.W.B.

the control P.W.B.

Removing electrical parts

1. Remove the electrical parts cover.

2. Remove the connectors from the CN4 (heat exchange thermistor), CN15 (stepping motor), CN19 (stepping motor),

CN2 (fan motor), and CN17 (humidity thermistor).

3. Remove two lock screws.

Removing receiver

1. Remove the connectors from the CN13.

STRUCTURE OF AN INDOOR UNIT ELECTRIC PARTS

CN11

RAF-25/35/50RXB

FIXING SCREW

ELECTRICAL COVER

13ー4

(3) Do not detach or reattach the connectors while energized

(2) Detaching and reattaching the board connector

Do not under any circumstances detach or reattach the connectors while energized. That would destroy the board components and fan motor. For both the indoor and outdoor boards, ensure that the smoothing capacitor has discharged its electricity fully before you do your work.

The product comes equipped with many board connectors provided with lock mechanism. Forcibly pulling any such part without unlocking it will destroy it. Be on guard. When reconnecting it, insert it securely all the way home.

All the receptacles for connecting tab terminals are with a locking mechanism. Forcibly pulling any such receptacle without unlocking it will destroy it. Be on guard. When reconnecting it, insert it securely all the way home.

Pinch the locking mechanism with your fingers and pull it out unlocked.

Other instructions

(1) Detaching and reattaching the receptacles for tab terminal

· Receptacle types and how to unlock them

Vertical (with a resin case)

Hold the resin case and pull it out.

Mild resin cover

Horizontal (with a mild resin cover)

Hold the cancel button down on the mild resin cover while pulling it out.

Cancel button

Locking mechanism

13ー5

Troubleshooting support

· The failure mode detected on the indoor unit side is displayed by blinking the "timer lamp". And a failure detected on the outdoor

· If the outdoor unit side detects a failure, the product will first conduct several operation retrials. There are some failure modes with no lamp display while retrials are continued.

[Failure mode where retrials are continued and the indoor unit lamp does not end up giving a display]

OH thermistor heat-up Overload lower limit cut

Low-frequency things

· The failure modes detected on the indoor and outdoor unit sides are stored in the nonvolatile memory of the indoor unit and can be read later on. (The memory will remain even after power-off.)

· The failure modes detected on the outdoor unit side are written in memory every time any such mode occurs. The failure mode can therefore be detected on the indoor unit side without waiting for the retry frequency to reach the display of the indoor unit lamp. Moreover, the normal self-diagnosis display function which rarely occurs will store and display failure modes that do not end up displaying the indoor unit lamp. (Any such mode may be unable to be stored if indoor or outdoor communications is in a failure.)

· The product stores 5 last-stored failure modes.

· There is a function for deleting memory. Once you clear the memory and run the product for several days, you can read the failure modes and check them, thereby detecting the less frequent failure phenomena.

· Failure modes can be checked by both the blinking of the lamp of the indoor unit and the display of the remote control liquid crystal display.

· The failure mode detected on the outdoor unit side is displayed by blinking the "LD301". Detecting a failure will stop the outdoor unit and keep blinking the LD301 until it is restarted. (The communication error will persist until the communication is reestablished.)

The "self-diagnosis function of the communication circuit" available in our conventional models is now incorporated as part of the normal self-diagnosis function. In the case of a failure in the communication circuit, you do not have to conduct a special operation and the operations can be automatically divided into 3 blinking operations and 12 blinking operations of the timer lamp. However, a strong external noise may have resulted in 12 times of blinking.

noitcnuFnoitpircseD

Self-diagnosis display [Display on the indoor unit side]

[Display on the outdoor unit side]

Self-diagnosis memory

unit side will be indicated by the "time lamp" blinking 4 times.

13ー6

1. How to count the lamp blinking frequency

・The product will repeat blinking with 2-second

intermissions.

・The blinking speed is as follows: on for 0.35 seconds and

off for 0.35 seconds.

While the "timer lamp" (orange), of the indoor unit is blinking, troubleshoot the product while referring to the table below.

2. If you wish to try another operation while the lamp is blinking, operate the START/STOP button on the remote control unit twice. The first push will reset the indoor microcomputer, while the second will activate the product

Self-diagnosis display function (indoor side display)

[An example of 5-time blinking]

2-second intermission

DESCRIPTION OF THE SELF-DIAGNOSIS INDICATION

2 sec

IC531 DEFECTIVE

INTERFACE DEFECTIVE(INDOOR)

REFRIGERANT CYCLE DEFECTIVE

INDOOR THERMISTOR DEFECTIVE

4 TIMES

FU1(3.15A)FUSE BLOWN

REPLACE THE PART WHICH CAUSED BLOWING /DISCONNECTION OF FU1(3.15A)FUSE

ACTION/REPLACEMENT PARTS,etc

FORCED COOLING OPERATION

FAILURE OF CONTROL P.W.B

REFER TO THE SERVICE GUIDE FOR HOW TO DETERMINE THE FAILED PART

OUTDOOR UNIT DEFECTIVE

ABNORMAL ROTATING NUMBERS OF DC FAN MOTOR

INTERFACE DEFECTIVE(OUTDOOR)

CHECK POINT

2 sec

12 TIMES

13 TIMES

9 TIMES

10 TIMES

ONCE

2 sec

REFER TO THE TABLE BELOW IF THE TIMER INDICATOR (ORANGE) IS BLINKING.

(

2 TIMES

3 TIMES

)

LIGHTS FOR 0.35 SEC AT INTERVAL OF 0.35 SEC.

2 sec

LAMP BLINKING MODE

MAIN DEFECTIVE

COME OFF OR DISCONNECTION OF THE CONNECTOR FOR LIGHT RECEIVING UNIT AND SWITCH P.W.B

FIX CN13 AND CN17 CONNECTOR

＊IF THE INDOOR UNIT CAN NOT BE OPERATED AT ALL,

REFER TO THE TABLE BELLOW.

＊IF THE INTERFACE CIRCUIT IS DEFECTIVE WHEN THE POWER IS

TURNED ON, THE SELF-DIAGNOSIS INDICATION WILL NOT WORK.

13ー7

91

13ー8

IC531

13ー9

SELF-DIAGNOSIS LIGHTING MODE

RAC-25/35FXB

MODEL

13ー10

SELF-DIAGNOSIS LIGHTING MODE

RAC-50FXB

MODEL

13ー11

< Troubleshooting by using the self-diagnosis memory function>

· By using the self-diagnosis memory function, you can check the failure mode (

1) occurring in the outdoor electrical

parts on the indoor unit side.

Steps 1. Clear the troubleshooting data.

2. Run the product for several minutes under the conditions where the compressor runs.

3. Redisplay and check the data written in the self-diagnosis memory.

· The self-diagnosis memory function can also be used to catch sporadic failure phenomena. Steps 1. Clear the troubleshooting data.

2. Have the user use the product as usual until a failure phenomenon occurs. (The period depends on the incidence of the phenomenon.)

3. At a later date, redisplay and check the data written in the self-diagnosis memory.

· For the outdoor self-diagnosis display (OH thermistor heat-up, overload lower limit cut) stemming from the freezing cycle or operating condition, the time lag is long from operation startup to the emergence of the phenomenon. Moreover, it is affected by the temperature, sunshine, operating hours, and other factors of the day, so that the

phenomenon may not be able to be identified at the time of a repair service visit. In that case too, use the self-diagnosis memory function (

2).

· The outdoor self-diagnosis display "overload lower limit cut" and "OH thermistor heat-up" can be identified only when you

are using the self-diagnosis lamp of the outdoor unit and the self-diagnosis memory function of the indoor unit. Note that this will not be automatically displayed on the indoor unit side.

Initiating troubleshooting

Yes

Perform troubleshooting according to the

self-diagnosis display.

No

Are the "timer lamp" (orange) of the indoor unit

blinking?

The product will begin to run in response to a remote

control setting: "cooling mode, temperature setting 16

"

(summer) or "heating mode, temperature setting 32

"

(winter).

Has the "operation lamp" been turned on?

seYseY

Yes

Check the indoor electrical parts.

Is the compressor running?

Turn off the power and turn on the power and

press the "forcible cooling" switch to operate the

product.

Has the compressor started to run?

Check the freezing cycle.

Check the outdoor electrical parts.

Diagnosis and troubleshooting of indoor electric parts, outdoor electric parts and refrigerating cycle

13ー12

Checking the indoor unit electrical parts

Is the "timer lamp" (orange) of the indoor unit blinking?

Introduction

Check results and next check items

Yes Yes

Yes

Yes No

No

Check 1 Check 2 Check 3 Check 4

How many times does the time lamp blinding

Set the remote control unit to cooling mode, temperature setting 16 (summer), heating mode, temperature setting

32

(winter) and operate the product.

Check 2: Has the product received the remote control signal and has the "operation lamp" gone on? (Yes/No)

If you responded "Yes" to Check 2:

Check 3: Is the compressor of the outdoor unit running? (Yes/No)

If you responded "No" to Check 2:

Check 4: Does the "emergency operation switch" work? (Yes/No)

First check the failure phenomenon and status, and then move on to elaborate diagnosis.

Initiating troubleshooting

No

Yes

Turn off the power, wait at least 5 seconds, turn it back on, and observe the way the horizontal vanes move for about 30 seconds.

Check 1: Have the horizontal vanes moved? (Yes/No)

Go on to "The power will not become turned on".

Next check item

Go on to "The compressor will not run".

Go on to "The product will not receive the remote control signal".

not 4 times 4 times

time lamp blinking,please see page 103 to 106.

outdoor ele.unit check, please see page 107 to 112.

No

oNoN

13ー13

1. Failure phenomenon: The power will not become turned on.

Situation

Neither initialization, remote control, nor any other step works on the vane position at power-on.

[ Estimated failure locations ]

· 3.15 A fuse blown out

· Control power circuit

· Connector loose, wire break

Cautions

Diagnosis flow

Initiating troubleshooting

Is a voltage of 2 0 V applied between WR001-WR002

Is the CN16 securely connected?

Replace the "indoor electrical parts".

Replace the "3.15 A fuse". Replace the "varistor (VA001)".

Abnormal

Is the power supply voltage normal? Has the varistor VA001 not become burned? Normal power supply voltage: AC 230 V

Estimated cause of fuse blowout · Abnormally high voltage applied to the power supply

· Indoor fan motor out of order

· Power circuit out of order

· Before work, check the power supply voltage. An abnormal voltage may be being supplied in some rare occasions due to a defect in the indoor wiring (a wire break in the neutral wire of the single-phase 3-wire power supply).

· If the 3.15 A fuse has blown out, eliminate the cause of the fuse blowout. Otherwise, there will occur another fuse blowout.

· If the 3.15 A fuse has blown out due to an abnormally high voltage to the power supply, the varistor (VA001) will deteriorate and become destroyed as well.

· On a repair service visit due to the failure phenomenon of "The power will not become turned on", take a "3 A fuse" and a "varistor" with you.

Get the indoor wiring back to its normal condition, then conduct a final check.

Normal

No

Yes

Replace the 3.15 A fuse, disconnect the CN2 (indoor fan motor), and conduct an operation check. Has the product worked?

Replace the "indoor fan motor".

Another fuse blowout

Disconnect the CN2 and check for continuity between the "red" and "black" wires of the indoor fan motor by using a tester. Is it shortcircuited?

Apply the black lead of the tester to the red lead of the motor. Apply the red lead of the tester to the black lead of the motor.

Replace the "indoor electrical parts". Replace the "indoor fan motor".

Replace the "indoor electrical parts".

Reconnect the connector correctly.

3

?

AC

.15

Is DC 5 V applied to both ends of the C106 and C113?