Toshiba RAS-30NKP-AR user guide manual

SERVICE MANUAL

AIR CONDITIONER

RAS-30NKP2B-1 / RAS-30N2A2B

RAS-30NKP-AR-1 / RAS-30N2A-AR

FILE NO. SVM-06017

SPLIT WALL TYPE

July 2006

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit

Outdoor Unit

2-2

3. WIRING DIAGRAM

4. SPECIFICATION OF ELECTRICAL PARTS

5. REFRIGERATION CYCLE DIAGRAM

6. CONTROL BLOCK DIAGRAM

7. OPERATION DESCRIPTION

4-1 Indoor Unit

4-2 Outdoor Unit (RAS-30NA2B)
4-3 Outdoor Unit (RAS-30N2A-AR)

5-1 RAS-30NKP2B-1 / RAS-30N2A2B
5-2 RAS-30NKP-AR-1 / RAS-30N2A-AR

7-1 Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 ECO Mode
7-4 Hi POWER Mode

7-5

Low-Temperature Limit Control

7-6 Auto Restart Function
7-7 Filter Check Lamp

7-8 Self-Cleaning function
7-9 QUIET Mode

7-10 COMFORT SLEEP mode

FILE NO. SVM-06017

8. INSTALLATION PROCEDURE

8-1 Safety Cautions

8-2 Installation Diagram of Indoor and Outdoor Units
8-3 Installation
8-4 Indoor Unit

8-5 Outdoor Unit

8-6 How to Set Remote Control Selector Switch
8-7 Others

9. TROUBLESHOOTING CHART

9-1 Troubleshooting Procedure

9-2 Basic Check Items
9-3 Primary Judgement
9-4 Self-Diagnosis by Remote Control (Check Code)

9-5 How to Diagnose Faulty Parts
9-6 Troubleshooting for Indoor Unit

9-7 Troubleshooting for Wiring (Interconnect Cable)
9-8 Troubleshooting for Air Purifier and Minus Ion

9-9 Troubleshooting for Remote Control

− 1 −

10. PART REPLACEMENT

10-1 Indoor Unit

10-2 Outdoor Unit

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E-Parts Assy)

11-2 Indoor Unit

11-3 Outdoor Unit (RAS-30N2A2B)
11-4 Outdoor Unit (RAS-30N2A-AR)

FILE NO. SVM-06017

− 2 −

1. SPECIFICATIONS

FILE NO. SVM-06017

MODEL

RAS-30NKP2B-1

RAS-30N2A2B

ITEM Cooling

Capacity

Power source V 220V

Power consumption kW
Power factor % 96

Running Indoor A

current Outdoor A
Starting current A 81
Moisture removal Liter/hr
Noise Indoor (H/M+/M/L+/L) dB 52/50/47/45/42

Outdoor (220) dB 58

Refrigerant

Refrigerant control Capillary tube

Interconnection

pipe Maximum length

Name of refrigerant
Rated amount kg 1.90

Gas side size mm  ∅ 15.88 

Connection type Flare connection

Liquid side size mm ∅ 6.35

Connection type Flare connection

(One way)

Maximum height
difference

kW 7.00

Phase 1∅

Hz 60

m

m 10

INDOOR UNIT

Height mm 298

Dimensions Width mm 998

Depth mm 220

Net weight kg 12

Evaporator type Finned tube

Indoor fan type Cross flow fan

High fan m3/h

Air volume Medium fan m3/h

Low fan m

Fan motor output W

Air filter Honeycomb woven filter with PP frame

1050

3

/h 900

OUTDOOR UNIT

Height mm 690

Dimensions Width mm 880

Depth mm 310

Net weight kg 69

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m

Fan motor output W 70

Compressor

Safety device IOL

Louver type Automatic louver

Usable outdoor temperature range °C

Note *1 Chargeless pipe

*2 Maximum pipe

Output W

3

/h 3558

Model

NHJ47NAHT

220V

3800

0.4

17.60

2.1

R-22

1

15*

*2

25
15

RAS-30NKP2B-1

1200

30

RAS-30N2A2B

2200

21 ~ 52

– 3 –

FILE NO. SVM-06017

MODEL

RAS-30NKP-AR-1 / RAS-30N2A-AR

ITEM

Capacity kW

220 V

7.95

Phase

Power source V

220V-240V

Hz

Power consumption W

Power factor %

3200

94

Cooling

1∅

50

230

Running current A

Indoor/Outdoor

Starting current A
Moisture remova lLiter/hr

Noise

Refrigerant

Indoor (H/M+/M/L+/L) dB
Outdoor (230V)

dB

Name of refrigerant

Rated amount kg

Refrigerant control

Gas side size

Connection type Flare connection

Liquid side size

Interconnection Connection type Flare connection

pipe Maximum length

(One way) 25*

Maximum height

difference

mm

mm

m

m

INDOOR UNIT

0.4/15.10

81

2.7

53/50/47/43/40

59

R22

2.00

Capillary tube

∅15.88

∅6.35

1

15*

2

15

RAS-30NKP-AR-1

Height mm 298

Dimensions Width mm 998

Depth mm 220

Net weight kg 12

Evaporator type Finned tube

Indoor fan type Cross flow fan

High fan m

Air volume Medium fan m

Low fan m3/h

3

/h 1200

3

/h 975

650

Fan motor output W 30

Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT RAS-30N2A-AR

Height mm 690

Dimensions Width mm 880

Depth mm 310

Net weight kg

68

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m3/h

3380

Fan motor output W 65

Compressor

Model NH56VNHT

Output W

2700

Safety device IOL

Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 52

240 V

8.00

3450

93

0.4/15.10

– 4 –

Note : 1

• Capacity is based on the following temperature conditions.

FILE NO. SVM-06017

Condition

Temperature

Indoor unit inlet air tempe

(DB) 27°C 29°C

(WB) 19°C 19°C

Outdoor unit inlet air temper

(DB) 35°C 46°C

(WB) 24°C 24°C

Note : 2

• Charge refrigerant according to the table below.

Refrigerant

*1 No need to charge

extra refrigerant

*2 Need to charge

extra refrigerant

RAS-30NKP-AR-1

RAS-30N2A-AR

JIS B8615-1 SSA 385, 386

RAS-30NKP2B-1 / RAS-30N2A2B

RAS-30NKP-AR-1 / RAS-30N2A-AR

15m or less

Over 15m up to 25m ( 40g/m)

RAS-30NKP2B-1

RAS-30N2A2B

– 5 −

2-1. Indoor Unit

Front panel

FILE NO. SVM-06017

2. CONSTRUCTION VIEWS

60

6

Knock out system

Air inlet

Air filter

Heat exchanger

790

275

Air outlet

64

120 80

590

Hanger

218

60

6

48

Knock out system

48

53

160

Drain hose (0.54m)

Hanger

45

Minimum
distance
to ceiling

275

170 or more

320

620

235 235

215 215

Minimum
distance
to ceiling

65 or more

Hanger

– 6 –

Connecting pipe (0.43m)

(Flare ∅6.35)
Connecting pipe (0.33m)
(For 13 series ; Flare ∅9.52

For 16 series ; Flare ∅12.7)

Hanger

Hanger

150150 160160
Installation plate outline

Center line

For stud bolt
(∅8~∅10)

For stud bolt (∅6)

26

4519040

Minimum
distance
to ceiling

170 or more

32

9090

57

18

Wireless remote control

2-2. Outdoor Unit

4-∅12x18

for ∅8 – ∅10

FILE NO. SVM-06017

anchor bolt

600 or

more

600

or more

600

Air inlet

Mounting dimension of anchor bolt

100 or

more

52

68

∅25 Drain outlet

120

Air outlet

100

or more

140

600

310

23

Electric

Parts cover

Liquid side

Handle

(Flare ∅6.35)

Gas side

(Flare ∅15.88)

Service Port

1212

340 (pitch)

88

74

880

364

A

Detail Drawing

A

600

50

63.8
340

27

4-∅12x18 holes

∅12x18 hole

340

(for ∅8 – ø10 anchor bolt)

690

Handle

– 7 –

BLK
WHI
RED

GRN&YEL

3. WIRING DIAGRAM

COLOR IDENTIFICATION

:

BRW

BROWN

RED

:

RED

WHI

:

WHITE

YEL

:

YELLOW

BLU

:

BLUE

BLK

:

BLACK

GRY

GRAY

:

PINK

PNK

:

ORN

ORANGE

:

GREEN &

:
:

GREENGRN

YELLOW

R09

R21

RY04

CN27

BLK
P04

CN30
CN31

11

3

GRN&YEL

SG01
DSA

R22

VARISTOR

T6.3A 250 V

F01 FUSE

LOUVER
MOTOR

BLU

6
6

IC04

L01

R01

DB01

C15

C01

MAIN P.C. BOARD

(MCC-821)

CN13

3

4

1

2

5

6

7 8 9

3

4

1

2

5

6

7 8 9

BLU

BLU

BLU

BLU

BLU

BLU

BLU

BLU

3

4

1

2

3

4

1

2

INFRARED RAYS RECEIVE
AND INDICATION PARTS

BLU

5

6

7 8 9

5

6

7 8 9

FILE NO. SVM-06017

FAN MOTOR

DC MOTOR

ORN

PNK

YEL

RED

BRW

1
1

C02

2
2

BLK

6

5

6

5

CN 10

C06

IC

IC01

THERMO

SENSOR

(TA)

4
4

T01

3
3

1
1

BLK

2
2

1
1

IC02

BLK

EXCHANGER

SENSOR

DC15V
DC0V

DC12V
DC7V

DC0V

HEAT

4

3

5

2

4

3

5

2

CN 07

CN03 CN01

10
10

WHI

10

CN25

10

1
1

BLK

(TC)

POWER SUPPLY
220~240V ~ 50Hz

(For RAS-30N2A-AR)
220 ~ 60Hz
(For RAS-30N2A2B)

OUTDOOR
TERMINAL
BLOCK

INDOOR
TERMINAL
BLOCK

L

N

BLK

RED

BLK

RED

BLK BLK

RED

MAGNETIC CONTACTOR

1

1

i

SPARK KILLER

A2 A1

52C

1/L1

2/T2

3/L2 4/T2

5/L3 6/T3

2

2

GRN&YEL

CAPACITOR

3

3

i

CHASSIS

GRY

COMPRESSOR TERMINAL

INDOOR
UNIT

OUTDOOR
UNIT

RED

CAPACITOR

S

WHI
PNK

R

COMPRESSOR

(For RAS-30N2A-AR)

WHI
RED

BLK

FAN MOTOR

C

BLK

COMPRESSOR TERMINAL

(For RAS-30N2A2B)

– 8 –

FILE NO. SVM-06017

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit

No. Parts name Type Specifications

1 Fan motor (for indoor) ICF-340-30-2 DC 310-340V, 30W
2 Thermo sensor (TA-sensor) ——— 10 kΩ at 25°C
3 Switchins transformer (T01) SWT-77 Output DC 7V, 12Va and 12Vb
4 Microcontroller TMP87CM40ANG 6G60
5 Heat exchanger sensor

(TC-sensor)
6 Line filter (L01) SS11V-R07190 19 mH, AC 0.7 A
7 Diode (DB01) D3SBA60 4 A, 600 V
8 Capacitor (C03) EKMH451VSN121MQ35S 120µF, 450 V
9 Fuse (F01) TSCR T6.3 A, 250 V

10 Switching IC (IC01) MA8920 5 A, 900 V
11 Varistor (R09, R10) 15G561K 560 V
12 Resistor (R01) RF-5TK4R8 1.8 Ω, 5 W
13 Louver motor MP35EA12 Output (Rated) 2 W, 10 poles, 1 phase,

——— 10 kΩ at 25°C

DC 12 V

4-2. Outdoor Unit (RAS-30N2A2B)

No. Parts name Type Specifications

Output (Rated) 2300 W, 2 poles, 1 phase, 208/230 V, 60 Hz

1 Compressor NH47NAHT Winding resistance (Ω) C-R C-S

(at 25°C) 0.52 1.28

Output (Rated) 70 W, 6 poles, 1 phase, 220 V, 60 Hz

2 Fan motor (for outdoor)

Running capacitor

3

(for fan motor)

Running capacitor

4

(for compressor)

5 Magnetic contactor

STF-200-70K

451355L

RS44B606U0220S AC 440

A35 220 V, 60 Hz

Winding resistance (Ω) Red-Black White-Black

(at 20°C) 40.8 84.8

AC 450 V, 3.5µF

V, 60µF

– 9 –

FILE NO. SVM-06017

4-3. Outdoor Unit (RAS-30N2A-AR)

No. Parts name Type Specifications

Output (Rated) 2700 W, 2 poles, 1 phase, 220 - 240 V, 50 Hz

1 Compressor

2 Fan motor (for outdoor)

Running capacitor

3

(for fan motor)

Running capacitor

4

(for compressor)

5 Magnetic contactor A35 220 - 240 V, 50 Hz

NH56VNHT

MMF-230-65I

451355L

RSS44B606U0220S

Winding resistance (Ω) C-R C-S

(at 25°C)

Output (Rated) 42 W, 6 poles, 1 phase, 220 - 240 V, 50 Hz

Winding resistance (Ω) Red-Black White-Black

(at 20°C) 71.2 139.0
AC 450 V, 3.5µF

AC 440 V, 60µF

0.66 1.58

– 10 –

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-30NKP2B-1 / RAS-30N2A2B

FILE NO. SVM-06017

Indoor unit

Cooling

0.39m
(Connecting pipe)

∅

15.88

O.D.:15.88mm O.D.:6.35mm

Compressor

P

Packed valve

(

∅

15.88 )

Gas container connection (Reinstall etc.)

Bypass Capillary

NHJ47NAHT

∅1.0x1000 l

Evaporator

Cross flow fan

T

0.49m
(Connecting pipe)

∅

6.35

Packed valve

(∅6.35)

Capillary tube

∅

2.4x500

S

50Hz

Cooling

Condenser

Propeller fan

Outdoor unit

Standard

pressure P

(MPaG)

Surface temp. of heat

exchanger interchanging

pipe T (°C)

Dryer

Refrigerant
R-22 1.90kg

Mark ( ) means check points of Gas Leak

Ambient temp.

Fan speed

conditions DB/WB

(indoor)

Indoor Outdoor

(°C)

*Standard 0.40 10.0 High 29/19 46/24

Cooling *High temperature 0.50 13.0 High 32/23 52/31*

Low temperature 0.25 1.0 Low 21/15 21/15

*SASO Standard’s condition

Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)

– 11 –

5-2. RAS-30NKP-AR-1 / RAS-30N2A-AR

FILE NO. SVM-06017

(Connecting pipe)

0.39 m

∅15.88

15.88 mm O.D.:6.35 mm

O.D.:

Accumulator

Compressor

P

Packed valve

15.88)

(∅

NH56VNHT

Indoor unit

Evaporator

Cross flow fan

Condenser

Propeller fan
Outdoor unit

T

Bypass Capillary

∅1.0x1000 l

0.49 m
(Connecting pipe)
∅6.35

Packed valve

(∅6.35)

Capillary tube

∅2.4x800 s

Dryer

Refrigerant

2.00

R22

Mark ( ) means check points of Gas Leak

kg

Ambient temp.

50 Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

Standard 0.38 8.0 High 27/19 35/24

Cooling High temperature 0.52 13.0 High 32/23 52/31

Low temperature 0.30 2.0 Low 21/15 21/15

Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)

– 12 –

Heat Exchanger Sensor

6. CONTROL BLOCK DIAGRAM

Indoor Unit Control Panel

M.C.U.

Functions

• Louver Control

FILE NO. SVM-06017

Operation

Display

Temperature Sensor

Infrared Rays Signal Receiver

Initiallizing Circuit

Infrared

Rays

Remote

Control

From Outdoor Unit
220 ~ 240 V AC 50 Hz

Clock Frequency
Oscillator Circuit

Power Supply

Circuit

Noise Filter

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

(Temperature Processing)

• Timer

Outdoor unit

ON/OFF Signal

Relay Driver

Relay RY03

Outdoor Unit

Louver ON/OFF Signal

Louver Driver

Timer

Display

Filter Sign

Display

Fan Only

Sign Display

Hi Power

Sign Display

Indoor

Fan Motor

Louver Motor

REMOTE CONTROL

Remote Control

Operation ( )

Operation ( )

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Temperature Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

Hi power

TIMER 1.3.5.9H

COMFORT SLEEP

QUIET

− 13 −

Infrared Rays

7. OPERATION DESCRIPTION

FILE NO. SVM-06017

7-1. Outline of Air Conditioner Control

This is a fixed capacity type air conditioner, which uses
a DC motor for an indoor fan. The DC motor drive
circuit is mounted in the indoor unit. And electrical
parts which operate the compressor and the outdoor
fan motor, are mounted in the outdoor unit.
The air conditioner is mainly controlled by the indoor
unit controller. The controller operates the indoor fan
motor based upon commands transmitted by the
remote control and transfers the operation commands
to the outdoor unit controller.
The outdoor unit controller receives operation
commands from the indoor unit, and operates the
outdoor fan motor and the compressor.

(1) Role of indoor unit controller

The indoor unit controller receives the operation

commands from the remote control and executes
them.

• Temperature measurement at the air inlet of the
indoor heat exchanger by the indoor
temperature sensor

• Temperature setting of the indoor heat
exchanger by the heat exchanger sensor

• Louver motor control

• Indoor fan motor operation control

• LED display control

• Transferring of operation commands to the

outdoor unit

• Receiving of information of the operation status
and judging of the information or indication of
error

(2) Role of indoor unit controller

The outdoor unit controller receives the operation

commands from the indoor controller and
executes them.

• Compressor operation
control

• Operation control of
outdoor fan motor

• Turning off the compressor and outdoor fan
when the outdoor unit receives the shutdown
command

Operations according
to the commands from
the indoor unit

Table 7-1-1

7-1-1. Louver control

(1)Vertical air flow louver

Position of veritcal air flow louver is automatically
controlled according to the operation mode.
Besides, position of vertical air flow louver can be
arbitrarily set by pressing [SET] button.

The louver position which is set by [SET] button
is stored in the microcomputer, and the louver is
automatically set at the stored position for the next
operation.

(2)Swing

If [SWING] button is pressed when the indoor unit is
in operation, the vertical air flow louver starts
swinging. When [SWING] button is pressed again, it
stops swinging.

7-1-2. Indoor fan control (DC Fan motor)

(1)The indoor fan is operated by the stepless speed

change DC motor.

(2)For air flow level, speed of the indoor fan motor is

controlled in five steps (LOW, LOW+, MED, MED
and HIGH). If AUTO mode is selected, the f an
motor speed is automatically controlled by the
difference between the preset temperature and the
room temperature.

LOW+ =

MED+=

LOW+MED

2

MED+HIGH

2

+

OPERATION

MODE

RAS-30NKP2B-1

Model

RAS-30NKP-AR-1

Cooling

Fan only
Dry

rpm

Air flow volume (m /h)

rpm

Air flow volume (m /h)

3

3

– 14 –

UH

UH
UH

1700
1200

1700
1200

H

H
H

1700
1200

1700
1200

M
M
M

1500
1050
1400

975

FAN TAP

L

L
L

1300

900

1050

650

L­L-

L-

1200

800

900

500

UL

UL

UL

1100

700

800
400

SL
SL

1000

600

700
300

SL

900
500

700
300

FILE NO. SVM-06017

7-2. Description of Operation Circuit

(1) When turning on the breaker, the operation lamp

blinks. This means that the power is on (or the
power supply is cut off.)

(2) When pressing [ ] button on the

remote control, receiving beep sounds from the
indoor unit, and the next operation is performed
together with opening the vertical air flow louver.

(3) Once the operation mode is set, it is memorized in

the microcomputer so that the previous operation
can be effected thereafter simply by pressing
[ ] button.

7-2-1. Fan only operation

([MODE] button on the remote control is set
to the fan only operation.)

(1) When [FAN] b utton is set to AUTO, the indoor fan

motor operates as shown in Fig. 7-2-1. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.

+3
+2.5
+2

+1.5
+1
+0.5

(Room temp.) – (Preset temp.)

Preset
temp.

0

(Preset temp.: 24°C

NOTE:

*1: The values marked with *1 are calculated and

controlled by the difference in motor speed
between M+ and L–.

M+

*1
*1
*1
L–

7-2-2. Cooling operation

([MODE] button on the remote control is set
to the cooling operation.)

(1) The compressor, outdoor fan and operation

display on the remote control are controlled as
shown in Fig. 7-2-2.

(Preset temp.)

−

(Room temp.)

Preset
temp.

0.5

ON

OFF OFF OFF ON

0

Compressor

ON

4-way valve

Outdoor fan

Fig. 7-2-2

(2) When [FAN] button is set to AUTO, the indoor fan

motor operates as shown in Fig. 7-2-3. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.

(Room temp.) – (Preset temp.)

Preset
temp.

+3
+2.5
+2
+1.5
+1
+0.5

0

-0.5

M+

*1

*1
*1

L–

NOTE:

display

OPERATION

(2) The Hi POWER, ECO and COMFORT SLEEP

operation cannot be set.

Fig. 7-2-1 Setting of air flow [FAN:AUTO]

*1: The values marked with *1 are calculated and

controlled by the difference in motor speed
between M+ and L–.

Fig. 7-2-3 Setting of air flow [FAN:AUTO]

– 15 –

FILE NO. SVM-06017

7-2-3. Dry operation

([MODE] button on the remote control is set
to the dry operation.)

(1) The compressor, 4-way valve, outdoor fan and

operation display on the remote control are
controlled as shown in Fig. 7-2-4.

ON:6min.

ON:6min.

OFF:4min.

OFF:4min.

ON:5min.

OFF:5min.

ON:5min.

OFF:5min.

OFF

Outdoor fan

Compressor

ON

OPERATION

(Room temp.) – (Preset temp.)

Preset
temp.

+3

+2

+1

OFF

0

Fig. 7-2-4

(2) The microprocessor turns the compressor on and

off at the regular intervals (4 to 6 minutes). While
the compressor is turning off, the indoor fan motor
operates in the SUPER LOW position.

The pattern of operation depending on the relation

between room temperature and preset
temperatures is shown in Fig. 7-2-5.

7-2-4. Automatic operation

([MODE] button on the remote control is set
to the automatic operation.)

(1) One of 2 operations (Cooling, Fan only) is

selected according to difference between the
preset temperature and the room temperature at
which the automatic operation has started, as
shown in Fig. 7-2-6. The Fan only operation
continues until the room temperature reaches a
level at which another mode is selected.

(2) Temporary Auto

When the TEMPORARY button on the indoor unit is
pushed, the preset temperature is fixed at 24°C and
the indoor unit is controlled as shown in Fig. 7-2-6.

°C

Cooling operation

The louver moves to the position
same as Hi Power operation.

display

+4

Cooling operation

0

Fan only operation

(Room temp.) – (Preset temp.)

RAS-30NKP2B-1
RAS-30NKP-AR-1

Room temp.

Preset temp.+1
Preset temp.

Compressor
Outdoor fan

Indoor fan

ON ON ON ON

OFF OFF OFF

L.*S.L. S.L.L. L. S.L. L.

*

Super Low

Fig. 7-2-5

(3) [FAN] button on the remote control is set to AUTO

only.

(4) The ECO and Hi Power operations can not be set.

Fig. 7-2-6

– 16 –

FILE NO. SVM-06017

7-3. ECO Mode

([ECO] button on the remote control is
pressed.)

When [ECO] button is pressed while the indoor unit is
in Cooling, Heating or Auto operation, ECO mark is
indicated on the display of the remote control and the
unit operates quietly and mildly controlling air flow.

(1) Cooling operation

• The preset temperature is changed
automatically as shown in Fig. 7-3-1.
(The value of the preset temperature on the
remote control does not change.)

• Fan speed → LOW

(˚C)

Preset temp.

is changed

+2

+1

Preset temp.

ECO button

is pressed

Preset temp.

is changed

1H 2H TIME0H

Fig. 7-3-1

7-4. Hi POWER Mode

([Hi POWER] button on the remote
control is pressed.)

When [Hi POWER] button is pressed while the indoor
unit is in Auto, Cooling or Heating operation, Hi
POWER mark is indicated on the display of the remote
control and the unit operates as follows.

(1) Automatic operation

• The indoor unit operates in according to the
current operation.

(2) Cooling operation

• The preset temperature drops 3°C.
(The value of the preset temperature on the
remote control does not change.)

• If the room temperature is higher than the
setting temperature by 3.5°C or more, the
horizontal louver moves to the Hi POWER
position automatically. Then when the room
temperature is °C less than the setting temperature
the horizontal louver returns automatically.

• FAN speed : [AUTO]
If the temperature is higher than the setting
temperature by 3.5°C or more, the air
conditioner operates at maximum airflow
level. If the temperature is higher than the setting
temperature by less than 3.5°C, the air
air conditioner operates at normal airflow level

FAN speed : One of 5 levels

•

If the temperature is higher than the setting

temperature by 3.5 °C or more, the air
conditioner operates at higher consecutive

airflow level. If the room temperature is higher

than the setting temperature by less than 3.5°C,
the air conditioner operates at normal airflow

level.

(3) The Hi POWER mode can not be set in Dry or

Fan only operation.

7-5. Low-Temperature Limit Control

The microprocessor detects the indoor heat exchanger
temperature to prevent the indoor heat exchanger from
freezing.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-6-1.

Heat exchanger
temperature

(˚C)

6
2

– 17 –

Compressor

ON

Less than 2°C continues for

5 minutes

OFF

Fig. 7-5-1

Outdoor fan

FILE NO. SVM-06017

7-6. Auto Restart Function

The indoor unit is equipped with an automatic
restarting function which allows the unit to restart
operating with the set operating conditions in the event
of power supply being accidentally shut down. The
operation will resume without warning three minutes
after power is restored.
This function is not set to work when shipped from the
factory. Therefore it is necessary to set it to work.

7-6-1. How to set auto restart function

To set the auto restart function, proceed as follows:
The power supply to the unit must be on; the function
will not set if the power is off.
Push the [TEMPORARY] button located in the center
of the front panel continuously for three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the
event of power supply being accidentally shut down.

When the unit is on standby (Not operating)

Operation Motions

Push [TEMPORARY] button for more The unit is on standby.
than three seconds.

The unit starts to operate. The green lamp is on.

→
→

The unit beeps three times The lamp changes from

0

TEMPORARY button

and continues to operate. green to orange.

3S

If the unit is not required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it off.

After approx. three seconds,

When the unit is in operation

Operation Motions

Push [TEMPORARY] button for more The unit is in operation. The green lamp is on.
than three seconds.

The unit stops operating. The green lamp is turned off.

→
→

After approx. three seconds,

0

TEMPORARY button

• While this function is being set, if the unit is in
operation, the orange lamp is on.

The unit beeps three times.

3S

If the unit is required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it on.

• While the filter check lamp is on, the [TEMPORARY]
button has the function of filter reset button.

• This function can not be set if the timer operation
has been selected.

• When the unit is turned on by this function, the
louver will not swing even though it was swinging
automatically before shutting down.

– 18 –

7-6-2. How to cancel auto restart function

To cancel auto restart function, proceed as follows:
Repeat the setting prodedure: the unit receives the
signal and beeps three times.
The unit will be required to be turned on with the
remote control after the main power supply is turned
off.

When the unit is on standby (Not operating)

Operation Motions

Push [TEMPORARY] button for more The unit is on standby.

→

than three seconds.

The unit starts to operate. The orange lamp is on.

→

The unit beeps three times The lamp changes from

0

TEMPORARY button

and continues to operate. orange to g reen.

3S

If the unit is not required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it off.

FILE NO. SVM-06017

After approx. three seconds,

When the unit is in operation

Operation Motions

Push [TEMPORARY] button for more The unit is in operation. The orange lamp is on.

→

than three seconds.

The unit stops operating. The orange lamp is turned off.

→

After approx. three seconds,

The unit beeps three times.

0

3S

If the unit is required to operate at this time,

TEMPORARY button

button once more or use the remote control to turn it on.

• While this function is being set, if the unit is in
operation, the orange lamp is on.

7-6-3. Power failure during timer operation

When the unit is in Timer operation, if it is turned off
because of power failure, the timer operation is
cancelled. Therefore, set the timer operation again.

7-7. Filter Check Lamp

When the elapsed time reaches 1000 hours, the filter
check lamp indicates. After cleaning the filters, turn off
the filter check lamp.

7-7-1. How to turn off filter check lamp

(1) Press [FILTER] button on the remote control.
(2) Push [TEMPORARY] button on the indoor unit.

push [TEMPORARY]

Note:

If [TEMPORARY] button is pushed while the filter
check lamp is not indicating, the indoor unit will start
the Automatic Operation.

– 19 –

y

g

g

play

(

(

p

)

g Op

g

p

g

(

(

)

g

FILE NO. SVM-06017

7-8. Self-Cleaning function.

Self-Cleaning function is designed to reduce humidity that causes mold to form inside the air conditioning unit.
This advanced, efficient system reduces moisture in the coil. When you turn off your air conditioner, the internal
fan activates and dries the moisture in the coil for 20 minutes, then turns off automaticall

.

Operation display

FCU fan

FCU louver OPEN CLOSE CLOSE

Timer display

Compressor

CDU fan

The Self-Cleaning function is set as default at ex-factory.

•

•

Self-Cleaning operation can stop manually by press [ ] botton of the remote

rpm is depend on preseting. rpm is SUL speed.

depend on preseting of timer function. depend on preseting of timer function.

depend on preseting per room temperature.

depend on preseting per room temperature.

Cool mode or dry mode Self-Cleaning mode

operation more than 10 mins. operate 20 mins.

ON OFF OFF

ON ON

ON or OFF

ON or OFF

ON or OFF

Turn off by remote controller

or timer-off function.

ON

OFF OFF

OFF OFF

Automatically turn-off.

ON or OFF

control two more time.

7-8-1. How to cancel Self-Cleanin

To cancel the Self-Cleanin

function, proceed as follows:

function

• Press TEMPORARY button one time or use remote control to
turn on air conditioner. The OPERATION dis
orange color (When AUTO-RESTART is ON) or green color

When AUTO-RESTART is OFF).

•

Hold down the TEMPORARY button for more than 20 seconds.

The air conditioner will stop suddenly when the TEMPORARY is

ressed but keep holding it continue. Then will beep 3 times in

the first 3 seconds but it is not related to Self-Cleaning function

After holding about 20 seconds, the air conditioner will beep 5

•
times without any blinking of display.

The Self-Cleanin

•

eration had been cancelled.

OFF

Operation time

will show in

TEMPORARY button

Remarks

Per settin

•

of Self-Cleaning function above, AUTO-RESTART

function had been cancelled. To set AUTO-RESTART again,

lease follow item 7-6-1.

7-8-2. How to set Self-Cleaning function.

To set the Self-Cleaning function, proceed as follows.

•

Press TEMPORARY button one time or use remote control to

turn on air conditioner. The OPERATION display will show in

e color (When AUTO-RESTART is ON) or green color

oran

When AUTO-RESTART is OFF).

•

Hold down the TEMPORARY button for more than 20 seconds.

The air conditioner will stop suddenly when the TEMPORARY is
pressed but keep holding it continue. Then will beep 3 times is
the first 3 seconds but it is not related to Self-Cleaning function

•

After holding about 20 seconds, the air conditioner will beep
5 times and OPERATION display blinks 5 times.

•

The Self-Cleaning function had been set.

Remarks

•

Per settin

of Self-Cleaning function above, AUTO-RESTART

function had been cancelled. To set AUTO-RESTART again,

please follow item 7-6-1.

− 20 −

FILE NO. SVM-06017

7-9. QUIET Mode

Quiet mode is the system which, control the
revolving speed of indoor fan to work constantly

at lower than speed L. In addition, noise level of
indoor unit is less than usual.

When the [QUIET] button is pressed, the fan of the
indoor unit will be restricted the revolving speed at

speed L

again (cancel Quiet mode).

Remarks :

1. Quiet mode is unable to work in dry mode.

2. Quiet mode is appropriate to work with less

-

until the [QUIET] button is pressed once

cooling load and less heating load condition.
Because of the fan speed L- may cause not

enough the cooling capacity or heating capacity.

7-10. COMFORT SLEEP mode

The principles of comfort sleep mode are:

• Quietness for more comfortable.

• Save energy by changing room temperature

automatically.

• The air condition can shut down by itself

automatically.

7-10-1. Cooling mode

• The fan speed of indoor unit operates automatically,

it relates with the compressor's operation.

Compressor’s Operation Fan Speed

-

ON L

OFF SL

• The preset temperature will increase 1°C after the

Comfort sleep mode has operated for 1 hour and
the temperature will increase another 1°C after the
comfort sleep mode has operated for 2 hour. (The
value of the preset temperature on the remote control

does not change.)

• Press the [COMFORT SLEEP] button to choose the

operating hours. Repeat pressing to select the hours.
(1hr, 3hr, 5hr or 9hr)

• If the [COMFORT SLEEP] button is pressed again

means cancel comfort sleep mode.

Remarks:

1. Comfort sleep mode will not operate in dry mode

and fan only mode.

2. Comfort sleep mode is appropriate to work with less

cooling load and less heating load condition.
Because of the fan speed L- may cause not enough

the cooling capacity or heating capacity.

-

21

-

FILE NO. SVM-06017

8. INSTALLATION PROCEDURE

8-1. Safety Cautions

For general public use

Power supply cord of Outdoor unit shall be more than 4 mm2 (H07RN-F or 245 IEC66 : polychloroprene
sheathed flexible cord) or 3.5 mm2 (AWG-12).

CAUTION

This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a
contact separation of at least 3 mm.
If this is not possible, a power supply plug with earth must be used. This plug must be easily accessible after
installation. The plug must be disconnected from the power supply socket in order to disconnect the
appliance completely from the mains.

To Disconnect the Appliance from the Main Power Supply

DANGER

• FOR USE BY QUALIFIED PERSONS ONLY.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE

ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED
WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.

FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT
WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATORS,
FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY
CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT WITH ANY OTHER GASEOUS BODY INTO
THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE
GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT
RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE
INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS
IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.

WARNING

• Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock
switches.

• Do not install in a place which cannot bear the weight of the unit.
Personal injury and property damage can result if the unit falls.

• Before doing the electrical work, attach an approved plug to the power supply cord.
Also, make sure the equipment is properly earthed.

• Appliance shall be installed in accordance with national wiring regulations.
If you detect any damage, do not install the unit. Contact your TOSHIBA dealer immediately.

CAUTION

• Exposure of unit to water or other moisture before installation could result in electric shock.
Do not store it in a wet basement or expose to rain or water.

• After unpacking the unit, examine it carefully for possible damage.

• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify

the noise level of the unit or where noise and discharged air might disturb neighbors.

• To avoid personal injury, be careful when handling parts with sharp edges.

• Please read this installation manual carefully before installing the unit. It contains further important

instructions for proper installation.

– 22–

FILE NO. SVM-06017

REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER

Please make absolutely sure that the installation of this appliance is reported to the local power supplier
before installation. If you experience any problems, or if the installation is not accepted by the supplier, the
service agency will take adequate countermeasures.

Remark per EMC Directive 89/336/EEC

To prevent flicker impressions during the start of the compressor (technical process) following installation
conditions do apply.

1. The power connection for the air conditioner has to be done at the main power distribution. This distribution
has to be of an impedance.
Normally the required impedance is reached at a 32A fusing point. Air conditioner fuse has to be 16A max.!

2. No other equipment should be connected to this power line.

3. For detailed installation acceptance, please contact your power supplier whether its restriction does apply
for products like washing machines, air conditioners or electrical ovens.

4. For power details of the air conditioner, refer to the rating plate of the product.

– 23 –

8-2. Installation Diagram of Indoor and Outdoor Units

Hook

65 mm or more

(A

tta

c

h

to

th

5 Sasa-Zeolite Vitamin C filter

1

7

0

m

o

r m

m

o

re

A

ir filte

e

fr

o

n

t p

a

n

e

l) (A

tta

c

h

to

th

e

a

ir filte

6 Bio-enzyme & Gingko filter

Hook

r

r)

1

Installation
plate

1

7

0

o

r m

Shield
pipe

FILE NO. SVM-06017

For the rear left and left
piping

m

m

o

re

Insert the cushion between
the indoor unit and wall,
and tilt the indoor unit for
better operation.

Do not allow the drain hose
to get slack.

Wall

ore installing the

Bef

wireless remote control

• With the remote control cover
open, load the batteries supplied
correctly, observing their polarity.

2 Wireless remote control

Cover

3 Batteries

2 Wireless remote

control

100 mm or more

m

600 m

8 Pan head wood screw

4

Remote control holder

Vinyl tape
Apply after
carrying out a
drainage test.

Saddle

100 mm

600 mm or more

ore

r m

o

or more

Extension
drain hose

(Not available,
provided by

installer)

600 mm or more

Cut the piping hole
sloped slightly

Make sure to run the drain
hose sloped downward.

The auxiliary piping can be
connected the left, rear left,
rear right or bottom.

Right

Rear

Rear left

Bottom

Insulate the refrigerant
pipes separately with
insulation, not together.

Left

Electric parts cover

Loop the connective cable
(about 100 mm in diameter
and 300 – 350 mm long).

Fig. 8-2-1

– 24 –

6 mm thick heat resisting
polyethylene foam

8-3. Installation

8-3-1. Optional installation parts

FILE NO. SVM-06017

Part

Code

Parts name

Refrigerant piping
Liquid side : ∅6.35 mm

A

Gas side : ∅15.88 mm

Pipe insulating material

B

(polyethylene foam, 6 mm thick)
Putty, PVC tapes

C

< Fixing bolt arrangement of outdoor unit >

600 mm

Air inlet

64 mm

340 mm

120 mm

Q'ty

One

each

1

One

each

Air outlet

Fig. 8-3-1

• Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind.

• Use ∅ 8 mm or ∅ 10 mm anchor bolts and nuts.

– 25 –

8-3-2. Accessory and installation parts

FILE NO. SVM-06017

Part

No.

Part name (Q'ty)

1

Installation plate x 1

2

Wireless remote control x 1

3

Battery x 2

Others

Owner’s manual

Installation manual

Name

Part

No.

Part name (Q'ty)

4

Remote control holder x 1

5

Sasa-Zeolite Vitamin C filter x 2

6

Bio-enzyme & Gingko filter x 2

Part

No.

Part name (Q'ty)

7

Mounting screw ∅ 4 x 25 x 8

8

Pan head wood screw
∅ 3.1 x 16 x 2

l

l

– 26 –

FILE NO. SVM-06017

8-4. Indoor Unit

8-4-1. Installation place

• A place which provides the spaces around the

indoor unit as shown in the above diagram.

• A place where there is no obstacle near the air inlet

and outlet.

• A place that allows easy installation of the piping to

the outdoor unit.

• A place which allows the Front panel to be opened.

CAUTION

• Direct sunlight to the indoor unit's wireless
receiver should be avoided.

• The microprocessor in the indoor unit should not
be too close to RF noise sources.
(For details, see the owner's manual.)

<Remote control>

• A place where there are no obstacles such as a
curtain that may block the signal from the indoor
unit.

• Do not install the remote control in a place exposed
to direct sunlight or close to a heating source, such
as a stove.

• Keep the remote control at least 1 m apart from the
nearest TV set or stereo equipment. (This is
necessary to prevent image disturbances or noise
interference.)

• The location of the remote control should be
determined as shown below.

8-4-2. Cutting a hole and mounting installation

plate

<Cutting a hole>

When installing the refrigerant pipes from the rear.

Pipe
hole

m

∅65 m

The center of the pipe
hole is above the arrow.

100 mm

Fig. 8-4-2

1. After determining the pipe hole position on the
mounting plate (100 mm A), drill the pipe hole
(∅65 mm) at a slight downward slant to the outdoor
side.

NOTE

• When drilling a wall that contains a metal lath, wire
lath or metal plate, be sure to use a pipe hole brim
ring sold separately.

<Mounting the installation plate>

Indoor unit

(Side view)

7 m

°

5

7

Reception
range

Remote
control

(Top view)

Indoor unit

Reception
range

* : Axial distance

Fig. 8-4-1

45

°

5 m

°

Remote control

* 7 m

170

120

Pipe hole

Hook

Indoor unit

Hook

Thread

Weight

55

Hook

Pipe hole

7 Mounting screw

65

1

Installation
plate

m

5

45

Fig. 8-4-3

– 27 –

FILE NO. SVM-06017

<When the installation plate is directly mounted on
the wall>

1. Securely fit the installation plate onto the wall by
screwing it in the upper and lower parts to hook up
the indoor unit.

2. To mount the installation plate on a concrete wall
with anchor bolts, utilize the anchor bolt holes as
illustrated in the above figure.

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a
mounting screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.

Installation plate
<Keep horizontal direction>

Anchor
bolt

Projection

5 mm dia. hole

15 mm or less

8-4-3. Electrical work

1. The supply voltage must be the same as the rated
voltage of the air conditioner.

2. Prepare the power source for exclusive use with the
air conditioner.

NOTE

• Wire type: More than 1.5 mm2 (H07RN-F or 245
IEC66) or 1.3 mm2 (AWG-16)

CAUTION

• Use power specified above table.

• This appliance can be connected to the mains in

the following way.
Connection to fixed wiring:
A switch or circuit breaker which disconnects all
poles and has a contact separation of at least
3 mm must be incorporate in the fixed wiring. An
approved circuit breaker or switches must used.

NOTE

• Perform wiring works so as to allow a generous
wiring capacity.

7 Mounting

screw

ss

∅4 x 25

s

ss

Clip anchor
(local parts)

Fig. 8-4-4

CAUTION

Failure to firmly install the unit may result in
personal injury and property damage if the unit falls.

• In case of block, brick, concrete or similar type
walls, make 5 mm dia. holes in the wall.

• Insert clip anchors for appropriate 7 mounting
screws.

NOTE

• Secure four corners and lower parts of the
installation plate with 6 to 7 mounting screws to
install it.

– 28 –

8-4-4. Wiring connection

Air inlet grille

FILE NO. SVM-06017

Connecting cable

Front panel

2

1

Terminal
cover

Screw

Terminal block

Cord clamp

Screw

Connecting cable

Earth
line

Fig. 8-4-5

<How to connect the connecting cable>
Wiring of the connecting cable can be carried out

without removing the front panel.

about 15 cm

Fig. 8-4-6

<Stripping length of connecting cable>

10 mm

10 mm

50 mm

40 mm

Earth line

Fig. 8-4-7

NOTE

Use stranded wire only.

• Wire type : More than 1.5 mm2 (H07RN-F or 245
IEC66) or 1.3 mm2 (AWG-16)

1. Remove the air inlet grille.
Open the air inlet grille upward and pull it toward
you.

2. Remove the terminal cover and cord clamp.

3. Insert the connecting cable (according to the local
cords) into the pipe hole on the wall.

4. Take out the connecting cable through the cable
slot on the rear panel so that it protrudes about
15 cm from the front.

5. Insert the connecting cable fully into the terminal
block and secure it tightly with screws.

6. Tightening torque : 1.2 N·m (0.12 kgf·m)

7. Secure the connecting cable with the cord clamp.

8. Fix the terminal cover, rear plate bushing and air
inlet grille on the indoor unit.

CAUTION

• Be sure to refer to the wiring system diagram

labeled inside the front panel.

• Check local electrical cords and also any specific

wiring instructions or limitations.

Fig. 8-4-8

NOTE

Connect the earth line to the metallic part (i mark)
located at the side of 3P terminal.

<How to install the air inlet grille on the indoor unit>

• When attaching the air inlet grille, the contrary of
the removed operation is performed.

– 29 –

Fig. 8-4-9

FILE NO. SVM-06017

8-4-5. Piping and drain hose installation
<In case of rightward piping>

• After scribing slits of the body-right by a knife or a
making-off pin, cut them by a pair of nippers or the
like.

Slit (Body-right)

Fig. 8-4-10

<In case of downward piping>

• After scribing slits of the body-right by a knife or a
making-off pin, cut them by a pair of nippers or the
like.

To connect pipe after installation of unit (figure)

(To the forefront of flare)

400 mm

300 mm

R 30 mm (Use polisin (polyethylene
core or the like for bending pipe.)

43 mm

Liquid side

Gas side

Outward form of indoor unit

Use the handle of screwdriver, etc.

Fig. 8-4-12

NOTE

If the pipe is bent incorrectly, the indoor unit may
unstably be set on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to the auxillary pipes
and wrap the facing tape around them.

Slit (Body-right)

Fig. 8-4-10

<Left-hand connection with piping>

Bend the connecting pipe so that it is laid within 43 mm
above the wall surface. If the connecting pipe is laid
exceeding 43 mm above the wall surface, the indoor
unit may unstably be set on the wall. When bending the
connecting pipe, make sure to use spring bender so as
not to crush the pipe.

Bend the connection pipe within a radius of 30 mm.

CAUTION

• Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly. In case of leftward
piping and rear-leftward piping, bind the auxiliary
pipes (two) only with facing tape.

Indoor unit

Auxiliary pipes

Installation plate

• Carefully arrange pipes so that any pipe does
not stick out of the rear plate of the indoor unit.

• Carefully connect the auxiliary pipes and
connecting pipes to each other and cut off the
insulating tape wound on the connecting pipe to
avoid double-taping at the joint, moreover, seal
the joint with the vinyl tape, etc.

• Since dewing results in a machine trouble, make
sure to insulate both the connecting pipes.
(Use polyethylene foam as insulating material.)

• When bending a pipe, carefully do it not to crush
it.

Connecting
cable

Drain hose

– 30 –

FILE NO. SVM-06017

8-4-6. Indoor unit fixing

1. Pass the pipe through the hole in the wall, and hook
the indoor unit on the installation plate at the upper
hooks.

2. Swing the indoor unit to right and left to confirm that
it is firmly hooked up on the installation plate.

3. While pressing the indoor unit onto the wall, hook it
at the lower part on the installation plate. Pull the
indoor unit toward you to confirm that it is firmly
hooked up on the installation plate.

1

2

Hook

Hook here

1 Installation

plate

Press

(unhook)

Fig. 8-4-13

• For detaching the indoor unit from the installation
plate, pull the indoor unit toward you while pushing
its bottom up at the specified parts.

8-4-7. Drainage

1. Run the drain hose sloped downwards.

NOTE

• Hole should be made at a slight downward slant on
the outdoor side.

Do not form the drain hose

Do not rise the drain hose.

50 mm
or more

Do not put the
drain hose end
into water.

into a wavy shape.

Do not put the
drain hose end
in the drainage
ditch.

Fig. 8-4-15

2. Put water in the drain pan and make sure that the
water is drained out of doors.

3. When connecting extension drain hose, insulate the
connecting part of extension drain hose with shield
pipe.

Fig. 8-4-14

Shield pipe

Drain hose

Inside the
room

Extension drain hose

Fig. 8-4-16

PushPush

CAUTION

Arrange the drain pipe for proper drainage from the
unit.
Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain
water collected from dew, which forms on the back of
the indoor unit, to the drain pan.
Therefore, do not store the power cord and other parts
at a height above the drain guide.

Wall

Drain guide

Space for pipes

– 31 –

Fig. 8-4-17

FILE NO. SVM-06017

8-5. Outdoor Unit

8-5-1. Installation place

• A place which provides the spaces around the
outdoor unit as shown in the left diagram.

• A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.

• A place where the operation noise and discharged
air do not disturb your neighbors.

• A place which is not exposed to a strong wind.

• A place free of a leakage of combustible gases.

• A place which does not block a passage .

• When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

• An allowable length of the connecting pipe is up 15 m.
(Refer to the table of T O CHARGE REFRIGERANT
for detail.)

• An allowable height level is up to 10 m.

• A place where the drain water does not raise any

problem.

CAUTION

8-5-2. Refrigerant piping connection

1. Cut the pipe with a pipe cutter.

90°

Obliquity

Roughness

Fig. 8-5-2

2. Insert a flare nut into the pipe, and flare the pipe.

• Projection margin in flaring : A (Unit : mm)

A

Die

Pipe

Fig. 8-5-3

Outer dia.

of copper pipe

∅6.35

Rigid Imperial

1.0 to 1.5

A

1.5 to 2.0

Warp

1. Install the outdoor unit without anything blocking
the air discharging.

2. When the outdoor unit is installed in a place
exposed always exposed to strong wind like a
coast or on a high storey of a building, secure
the normal fan operation using a duct or a wind
shield.

3. In particularly windy areas, install the unit such
as to avoid admission of wind.

4. Installation in the following places may result in
trouble.
Do not install the unit in such places.

• A place full of machine oil.

• A saline-place such as the coast.

• A place full of sulfide gas.

• A place where high-frequency waves are likely

to be generated as from audio equipment,
welders, and medical equipment.

Strong

wind

15.88

∅

1.0 to 1.5

2.0 to 2.5



<Tightening connection>

Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers. Then
tighten the nut with a spanner and torque wrench as
shown in the figure.

CAUTION

• Do not apply excess torque.

• Otherwise, the nut may crack depending on the

conditions.

Fig. 8-5-1

– 32 –

FILE NO. SVM-06017

(Unit : N·m)

Outer dia.

of copper pipe

∅ 6.35 mm

∅15.88 mm

Tightening torque

16 to 18 (1.6 to 1.8 kgf·m)
65 to 80 (6.5 to 8.0 kgf·m)



• Tightening torque of flare pipe connections

Flare at
indoor unit side

Flare at
outdoor unit side

Fig. 8-5-4

Flare nutHalf union

Externally
threaded side

Use a wrench to secure.

Use a torque wrench to tighten.

Internally
threaded side

Fig. 8-5-5

CAUTION

8-5-3. Evacuating

After the piping has been connected to the indoor unit,
you can perform the air purge together at once.

AIR PURGE

Evacuate the air in the connecting pipes and in the
indoor unit using a vacuum pump. Do not use the
refrigerant in the outdoor unit. For details, see the
manual of the vacuum pump.

<Using a vacuum pump>

Be sure to use a vacuum pump with counter-flow
prevention function so that inside oil of the pump does
not flow backward into pipes of the air conditioner
when the pump stops.

1. Connect the charge hose from the manifold valve to
the service port of the gas side packed valve.

2. Connect the charge hose to the port of the vacuum
pump.

3. Open fully the low pressure side handle of the
gauge manifold valve.

4. Operate the v acuum pump to start evacuating.
Perform evacuating for about 15 minutes if the
piping length is 20 meters. (15 minutes for 20
meters) (assuming a pump capacity of 27 liters per
minute.) Then confirm that the compound pressure
gauge reading is –101 kPa (–76 cmHg).

5. Close the low pressure side valve handle of gauge
manifold.

6. Open fully the valve stem of the packed valves
(both sides of Gas and Liquid).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

• KEEP IMPORTANT 4 POINTS FOR PIPING

WORK

(1) Take away dust and moisture (Inside of the

connecting pipes.)
(2) Tight connection (between pipes and unit)
(3) Evacuate the air in the connecting pipes using

VACUUM PUMP.
(4) Check gas leak (connected points)

Compound pressure gauge

-101kPa (-76cmHg)

Handle Lo

Charge hose

Connecting pipe

Packed valve at liquid side

Packed valve at gas side

Service port
(Valve core (Setting pin))

Fig. 8-5-6

Pressure gauge

Manifold valve

Handle Hi
(Keep full closed)

Charge hose

Vacuum pump
adapter for
counter-flow
prevention

Vacuum

pump

– 33 –

FILE NO. SVM-06017

TOCHARGE REFRIGERANT

Refrigerant

No need to charge
refrigerant

Need to charge Over 15 m up to
refrigerant 25 m (40g/m)

30 Class

15 m or less

<Packed valve handling precautions>

• Open the valve stem all the way out; but do not try
to open it beyond the stopper.

• Securely tighten the valve stem cap with torque in
the following table:

Gas side Tightening torque A

Gas side 65 to 80 N·m

(∅15.88 mm.) (6.5 to 8.0 kgf·m)

4 mm

Liquid side 16 to 18 N·m Same as

(∅6.35 mm.) (1.6 to 1.8 kgf·m) Gas side

Service port

9 to 10 N·m
(0.9 to 1.0 kgf·m)

8-5-4. Wiring connection

1. Remove the electric parts cover from the outdoor unit.

2. Connect the connecting cable to the terminal as
identified with their respective matched numbers on
the terminal block of indoor and outdoor unit.

3. When connecting the connecting cable to the
outdoor unit terminal, make a loop as shown
installation diagram of indoor and outdoor unit, to
prevent water coming in the outdoor unit.

4. Insulate the unused cords (conductors) with water
coming in the outdoor unit. Process them so that
they do not touch any electrical or metal parts.

<Stripping length of connection cable>

Terminal block

LN 1 32

Terminal screw

Earth line

Cord clamp

Power supply cord

Screw

Cord clamp

Connecting cable

• Hexagonel wrench: A (unit : mm)

Hexagonal wrench
is required.

Fig. 8-5-7

N

L

10

10

60

A

70

Earth line

123

10

10

70

Connecting cablePower supply cord

80

Fig. 8-5-8

Model

Power source

Maximum running
current

Plug socket &
fuse rating

Power cord



4 mm2 (H07RN-F or 245 IEC 66) or

3.5 mm

60 Hz, 220 ~ 230V Single phase

30 Class

18A

20A

2

(AWG-12)

CAUTION

• Wrong wiring connection may cause some
electrical parts burn out.

• Be sure to comply with local codes on running the
wire from outdoor unit to indoor unit (size of wire
and wiring method etc.)

• Every wire must be connected firmly.

NOTE: Connecting cable

• Wire type : More than 1.5 mm2 (H07RN-F or 245
IEC66) or 1.3 mm2 (AWG-16)

– 34 –

FILE NO. SVM-06017

8-6.How to Set Remote Control Selector

Switch

When two indoor units as installed in seperated rooms,
there is no need to change the selector switch.

<Remote control selector switch>

• When two indoor units are installed in the same
room or the adjacent two rooms, they may be
controlled simultaneously with a single remote
control. To prevent this, set either unit and its
remote control to B setting. (Both units are set to A
setting before shipment.)

• The remote control signal is not recived when the
indoor unit setting is different from the remote
control one.

1. Set the remote control selector switch with the
indoor unit.

1) Turn the circuit breaker of the main power switch off
before setting the selector switch.

2) Remove the Air inlet grille and Front panel. (Refer to
page 52, 10-1)

2. Set the remote control selector switch with the
remote control

[B] is indicated on the liquid crystal display when
setting remote control selector switch to B. [A] is
not indicated on the display even if the selector
switch is set to A.

1) Load the remote control with the batteries.

2) Press the [CHK] button using something with
sharp point. (The preset temperature on the remote
control changes to [00].)

3) Press the [MODE] button while pressing the
[CHK] button, [B] is indicted at the right of the
present temperature display.

• To reset the switch to the [A] setting, press the
[MODE] button again while pressing the [CHK]
button.

3) Select the terminal of selector switch from
[A position] to [B position].

A
B

Fig. 8-6-1

Slector
switch

[MODE] button

[CHK] button

Fig. 8-6-2

3. Confirm that the indoor unit can operate with
the new setting.

– 35 –

FILE NO. SVM-06017

8-7. Others

8-7-1. Gas leak test

Electric parts cover

Flare nut connections
(Outdoor unit)

D

B

Valve stem cap connection

Fig. 8-7-1

• Check the flare nut connections, valve stem cap
connections and service port cap connections for
gas leak with a leak detector or soap water.

8-7-2. Test operation

C

Flare nut connections
(indoor unit)

Valve stem cap
connection

A

Service cap
connection

8-7-3. Auto restart setting

This product is designed so that, after a power failure,
it can restart automatically in the same operating mode
as before the power failure.

Information

The product was shipped with Auto Restart function
in the off position. Turn it on as required.

<How to set the auto restart>

• Press and hold down the TEMPORARY button for
about 3 seconds. After 3 seconds, the electronic
beeper makes three short beeps to tell you the Auto
Restart has been selected.

• To cancel the Auto Restart, follow the steps
described in the section Auto Restart Function of
the Owner’s Manual.

To switch the TEST RUN (COOL) mode, press
TEMPORARY b utton for 10 sec.
(The beeper will make a short beep.)

TEMPORARY button

Fig. 8-7-2

– 36 –

9. TROUBLESHOOTING CHART

FILE NO. SVM-06017

9-1. Troubleshooting Procedure :

9-2-2. Incorrect cable connection between Indoor

and outdoor units

Follow the details of 9-2. Basic Check Items.
If there is no trouble corresponding to 9-2, check
whether or not there are faulty parts following

9-4. Self-Diagnosis by Remote Control.

9-2. Basic Check Items

The indoor unit is connected to the outdoor unit with
4 cables. Check that the indoor and outdoor units have
been properly connected with terminals assigned the
same numbers. If the connectors are not properly
connected, the outdoor unit will not operate normally,
or OPERATION lamp and TIMER lamp will blink (5 Hz).

9-2-1. Power supply voltage

The line voltage must be AC 220 – 240 V. If it is not
within this range, the air conditioner may not operate
normally.

9-2-3. Program control

The microcontroller operates as shown in Table 9-2-1
to control the air conditioner. If there are any opera­tional problems, check whether or not the problems
correspond to Table 9-2-1. If they correspond to the
Table, they are not problems with the air conditioner,
but they are indispensable operations to control and
maintain the air conditioner properly.

Table 9-2-1

No. Operation of air conditioner Descriptions

1 When the main power supply is turned

on, the OPERATION lamp on the
indoor unit blinks.

2 The indoor fan motor speed does not

change in the Dry operation.

3 The compressor is not turned off even

though the room temperature is in the
range that the compressor is turned off.

The OPERATION lamp blinks to indicate that power is turned on. If the

[ ] button is pressed, the lamp stops blinking.

The indoor fan motor speed is automatically controlled in the Dry
operation.

The compressor has a function that it is not turned off for 3 minutes
after it is turned on even though the room temperature is in the range
that the compressor is turned off.

4 The compressor is not turned on and

off even though the thermo control is
operated in the Dry operation.

5 The compressor is not turned on even

though the room temperature is in the
range that the compressor is turned on.

6 The operation mode changes in the

Automatic operation.

7 The Fan only operation continues in the

Automatic operation.

8 The ECO operation or Hi-POWER

operation does not work.

9 When [Hi POWER] button is pressed,

the display on the remote control does
not change at all.

In the Dry operation, the compressor is turned on and off automatically
at the regular intervals, independent of the thermo control.

The compressor is not turned on in the restart delay timer (3-minutes
timer) operation. It is also not turned on after the power supply is
turned on because of this timer operation.

In Automatic operation, the room temperature is detected all time
for control fan speed and the operation mode is changed every
15 minutes according to difference between the room temperature
and the preset temperature.

When the room temperature is in the range
(Preset temperature ± 1°C), the Fan only operation is selected.

These operations do not work when the unit is in the Dry
operation or Fan only operation.

The display on the remote control does not change when
[Hi POWER] button is pressed. However the microcontroller gives
commands to change the preset temperature and air flow level.

– 37 –

FILE NO. SVM-06017

9-3. Primary Judgement

9-3-1. Role of indoor unit controller

The indoor unit controller receives the operation
commands from the remote control and executes
them.

• Temperature measurement at the air outlet of the
indoor heat exchanger by the indoor temperature
sensor

• Temperature setting of the indoor heat exchanger by
the heat exchanger sensor

• Louver motor control

• Indoor fan motor operation control

• LED display control

• Transferring of operation commands to the outdoor

unit

Table 9-3-1

Lamps Self-diagnosis

A OPERATION lamp is blinking. (1 Hz)
B OPERATION lamp is blinking. (5 Hz)
C OPERATION lamp is blinking. (5 Hz)
D OPERATION lamp is blinking. (5 Hz)
E OPERATION lamp is blinking. (5 Hz)
F OPERATION and TIMER lamps are blinking.

(5 Hz)

9-3-2. Failure diagnosis

The indoor unit diagnoses the operation condition and
indicates the information of the self-diagnosis with the
lamps on the display panel of the indoor unit.

Power failure (when the power supply is turning on)
Thermo sensor (TA) short or break
Heat exchanger sensor (TC) short or break
Indoor fan motor lock or failure
Indoor P.C. board failure
Wrong wiring of connecting cable

G OPERATION, TIMER and PRE-DEF.

(or FAN ONLY for cooling only model) lamps
are blinking.

Table 9-3-2 Diagnosis by detective operation

Symptom Check Primary judgement

The remote control
does not work.

The outdoor fan
does not rotate.

Turn off the power supply once,
then turn it on. Try to operate
the remote control.

The compressor operates.

The compressor does not operate.

Cycle failure

• Gas shortage or other refrigerant cycle trouble

• Heat exchanger sensor open, break or short

• Overload relay or thermostat trouble of compressor

The remote control
still does not work.

The remote control
works.

The indoor unit (and/or remote
control) is/are defective .

OK.

The outdoor unit (Outdoor fan
motor) is defective .

An internal part of the
compressor or P.C. board is
defective.

– 38 –

9-4. Self-Diagnosis by Remote Control

(Check Code)

(1) If the lamps are indicated as shown B to G in Table

9-3-1, exchanger the self-diagnosis by the remote
control.

(2) When the remote control is set to the service

mode, the indoor controller diagnoses the
operation condition and indicate the information of
the self-diagnosis on the display of the remote
control with the check codes. If a fault is detected,
all lamps on the indoor unit will blink at 5 Hz and it

will beep for 10 seconds (Pi, Pi, Pi....). The timer

lamp usually blinks (5 Hz) during the self-diagnosis.

9-4-1. How to use remote control in service mode

FILE NO. SVM-06017

(1) Press [CHK] button with a tip of pencil to set the

remote control to the service mode.

• “00” is indicated on the display of the remote
control.

• The timer lamp on the indoor unit blinks
continuously. (5 times per 1 sec.)

(2) Press [TIMER 8] button.

If there is no fault with a code, the indoor unit will
beep once (Pi) and the display of the remote
control will change as follows:

00

01

• Check the unit with all 35 check codes (00 to 22).
as shown in Table 9-4-1.

• Press [TIMER 9] button to change the check
code backwards.

If there is a fault, the indoor unit will beep f or 10
seconds (Pi, Pi, Pi...).
Note the check code on the display of the remote
control.

• 2-digits alphanumeric will be indicated on the
display.

• All lamps on the indoor unit will blink. (5 times
per 1 sec.)

(3) Press [CLR] button. After service finish for clear

service code in memory.

• “7F” is indicated on the display of the remote
control.

1d

1E02 22

• Alphanumeric characters are used for the check code.
is 5. is 6.

is A. is B.
is C. is D.

* This illustration is only for Heat pump model.

For Cooling only model, there is not the ( ) symbol.

– 39 –

(4) Press [ ] button to release the service

mode.

• The display of the remote control returns to as it
was before service mode was engaged.

Table 9-4-1

Block level Diagnosis function

Check

code code status

Block

Indoor
P.C. board

Cable
connection

Outdoor
P.C. board

Other parts
(including
compressor)

Check

Symptom

The indoor thermo sensor (TA) is
defective.
Disconnection or short-circuit

The indoor heat exchanger
sensor (TC) is defective.
Disconnection or short-circuit

The indoor fan motor or its circuit
is defective.

The part other than the above
parts on the indoor P.C. board is
defective.
EEPROM access error

IOL operation

The serial signals can not be
transmitted and received between
indoor and outdoor units.

The crossover wire is

•

connected wrongly.
The serial signal transmitting

•

circuit on the outdoor P.C. board
is defective.
The serial signal receiving

•

circuit on the indoor P.C. board
is defective.

The operation command signals
are not transmitted from the
indoor unit to the outdoor unit.

The outdoor thermo sensor (TE)
is defective.
Disconnection or short-circuit

The outdoor heat exchanger (TD)
sensor is defective.
Disconnection or short-circuit

The reply serial signal has been
transmitted when starting the
unit, but stops being transmitted
shortly after.

1. Compressor ther mo operation

•

Gas shortage

• Gas leak

2. Instantaneous power failure

The discharge temperature is
over 120°C.

The IOL operation is defective.

Unit

Operation
continues.

Operation
continues.

All off

Operation
continues.

All off

Operation
continues.

Operation
continues.

All off

All off

Operation
continues.

All off

All off

Condition

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected. And it
returns to the
normal condition
when recovering
from errors.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected. And it
returns to the
normal condition
when recovering
from errors.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
detected.

FILE NO. SVM-06017

Judgement and action

1. Check the indoor thermo sensor (TA).

2. Check the indoor P.C. board.

1. Check the indoor heat exchanger
sensor (TC).

2. Check the indoor P.C. board.

1. Check the connector circuit of the
indoor fan motor (CN10).

2. Check the indoor fan motor.

3. Check the indoor P.C. board.

1. Check the indoor P.C. board.
(EEPROM and peripheral circuits)

Overload operation of refrigerating cycle

1. In the case of the outdoor unit not
operating at all;

•

Check the crossover cable and
connect it properly.

•

Check the outdoor P.C. board.

2. In the case of the outdoor unit operating
normally;

•

Check whether or not both of serial
LED (Green) and serial LED (Orange)
is blinking.
If the serial LED (Green) is not
blinking, check the outdoor P.C. board.
If the serial LED (Orange) is not
blinking, check the indoor P.C. board.

If the operation command signals continue
to be transmitted between 2 and 3 of the
indoor terminal block, replace the outdoor
P.C. board.

1. Check the outdoor thermo sensor (TE).

2. Check the outdoor P.C. board.

1. Check the outdoor heat exchanger
sensor (TD).

2. Check the outdoor P.C. board.

1. Repeatedly tur n the indoor unit on and
off with the interval of approx. 10 to 40
minutes. (The check code is not
indicated during operation.) And supply
gas. (Check gas leak.)

2. The indoor unit operates nor mally
during the check.
If the reply serial signal continues to be
transmitted between 2 and 3 of the
indoor terminal block, replace the
outdoor P.C. board.
If the signal stops between them,
replace the indoor P.C. board.

1. Check the heat exchanger sensor (TD).

2. Gas purging

When turning on the unit, the normal
phase (RST) is detected but T-R waveform
has not been detected for 120 seconds or
more.

− 40 −

9-5. How To Diagnose Faulty Parts

[09 Other cycle error]

FILE NO. SVM-06017

Connect

connector

properly.

Replace

condenser.

Replace

fan motor.

NO

NO

NO

Is connector

connected properly?

Is condenser normal?

Is indoor fan

motor normal?

YES

YES

YES

NO

Does indoor

fan operate?

Are filters clogged?

Is TC sensor

resistance value

(10 kΩ at 25°C) normal?

Is charged amount

of refrigerant normal?

Is outside air

low load?

Indoor P.C. board

is defective.

YES

NO

YES

YES

NO

YES

NO

NO

YES

Clean filters.

Replace

TC sensor.

Anti-freezing operation

Charge

refrigerant.

Anti-freezing operation

Replacd

P.C. board.

[0C Indoor TA sensor error]

Is CN04 (TA sensor connector)

connected properly?

YES

Is TA sensor resistance value

(10 kΩ at 25°C) normal?

YES

NO

NO

Indoor P.C. board is defective.

Connect CN04 properly.

Replace T A sensor.

Replace P.C. board.

– 41 –

[0d Indoor TC sensor error]

FILE NO. SVM-06017

Is CN05 (TC sensor connector)

connected properly?

YES

Is TC sensor resistance value

(10 kΩ at 25°C) normal?

YES

NO

NO

Indoor P.C. board is defective.

Connect CN05 properly.

Replace TC sensor.

Replace P.C. board.

– 42 –

9-6. Troubleshooting for Indoor unit

Operation

Measure

Item by symptoms

Check item

Conceivable principle

cause

9-6-1. Power can not be turned on. (The unit does not operate at all.)

<Primar check>

(1) Is the supply voltage normal?
(2)Is the connection to the AC output OK?
(3) Is the fuse (F01) blown?

Turn off power
supply once, and 5
second later, turn it

on again.

NO

Is OPERATION

lamp blinking?

YES

Does

Is it possible to

turn on power

supply by

pressing

[ ]

button on remote

control?

YES

NO

transmission

mark on

remote

control flash

normally, and

is its signal
transmitted

properly?

YES

NO

FILE NO. SVM-06017

Remote control is

defective.

Refer to 9-9

"Troubleshooting for

Remote Control."

Is DC 310 -

340V across

C03?

Are DC 12V,

across C27?

YES

YES

NO

NO

Is fuse (F01)

control board

Is voltage (DC

NO

indicated on

rear of indoor

control board

Turn off breaker
once and turn it

on again after

removing motor.

of indoor

blown?

NO

12V or 5V)

normal?

YES

YES

Parts (R10,
C01, DB01,

or C02, C03

IC01)

are defective.

Are DC 12V,
across C27?

YES

– 43 −

NO

Does the fan

motor

connector

between 1

and

short-

3

circuit?

NO

Microconlroler

defective.

T01 or IC01 is

def

ec

tive.

YES

Unit operates

normally.

Replace main P.C.

board.

Replace motor.

FILE NO. SVM-06017

9-6-2. Only indoor fan motor does not operate.

<Primary check>

(1) Is it possible to detect the power supply voltage (200 – 240 V) between 1 and 2 on the terminal block?
(2) Does the indoor fan motor operate in cooling operation?

[ ]

– 44 –

FILE NO. SVM-06017

9-6-3. Indoor fan motor automatically starts to rotate by turning on power supply.
<Cause>

The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to the inside of the motor.
If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning
on power supply.

<Inspection procedure>

(1) Remove the front panel. (Remove 4 screws.)
(2) Remove the cover of the fan motor lead wires.
(3) Check DC voltage with CN10 connector while the fan motor is rotating.

NOTE:

• Do not disconnect the connector while the fan motor is rotating.

• Use a thin test rod.

Indoor fan starts rotating when power supply is turned on.

(Check output DC voltage of fan motor on P.C. board.)

Measure voltage between 3 (GND:BLACK)
and 5 (V line:YELLOW) of motor connector

(CN10) while indoor fan motor is rotating.

DC 1.0 V or more

P.C. board is defective.

Replace P.C. board.

Under DC 1.0 V

Motor is defective.

Replace motor.

DC

Yellow

Black

P.C. board

CN10

6 (Blue)
5 (Yellow)

4 (White)
3 (Black)

2
1 (Red)

– 45 –

9-6-4. Compressor does not operate.
<Primary check>

(1) Is the preset temperature higher than the room temperature in cooling operation?
(2) Is the crossover cable connected properly?

<Inspection procedure>

-Cooling only model-

FILE NO. SVM-06017

– 46 –

<Inspection procedure>

- Colling model -

Turn on power supply.

FILE NO. SVM-06017

Does OPERATION

lamp blink?

YES

Is it possible to start

unit by remote control?

YES

Is it possible to detect AC 200V

between 2 and 3 on terminal block?

YES

Is crossover cable normal?

YES

Are all of compressor cords normal?

YES

Is compressor motor winding normal?

(Check winding resistor.)

YES

Is capacitor for compressor normal?

YES

NO

NO

NO

NO

NO

NO

NO

Compressor is defective.

Capacitor is defective.

Refer to item Power

can not be turned on .

Refer to 9-9 Troubleshooting

for Remote Control .

Replace P.C. Board

and TC sensors.

Connect crossover

cable properly.

Rewire or replace

defective cords.

Replace compressor.

Replace compressor.

Is overload relay normal?

YES

Does compressor start?

YES

Does compressor stop after a while?

YES

Is gas quantity normal?

(Check gas pressure.)

YES

Compressor is defective.

YES

Replace P.C. borad

NO

NO

NO

Overload relay is defective.

Compressor is defective.

Gas shortage (Gas leak)

Replace overload relay.

Replace compressor.

Supply gas.

− 47 −

FILE NO. SVM-06017

9-7. Troubleshooting for Wiring (Interconnect cable)

9-7-1. Outdoor unit does not operate.
<Inspection procedure>

(1) Is the voltage between and of the indoor terminal block varied?

1

(2) Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram?

NOTE:

 Measure the voltage for 2 minutes and 30 seconds after starting the unit.

Terminal block on indoor side

Red

2

3

~

White

2

1

Terminal block

~

Tester

Fig. 9-7-1

Normal condition : After start operated about 2 minutes and 30 seconds. Voltage between 2 and 3 of the

of the indoor's Terminal block should be equal AC 220 ~ 240V (For Asia model), AC 220V

Abnormal condition : Don't found voltage AC 220 ~ 240V from terminal block (0V)

9-7-2. Outdoor unit stops a while after starting the unit.

<Confirmation procedure> Select one of 3 cases below and follow the procedure.

(1) The outdoor unit stops between 10 and 20 minutes passed after starting and it takes 10 minutes or more to

restart the unit.

Gas has a low circulation.

Measure gas pressure.

Compressor is turned off and on automatically by

or thermostat (Cooling only Model).

Gas shortage

Gas leak

Pipe clogging

(2) The outdoor unit stops once, it would not operate until the power is turned on again.

Refer to 9-6-4 "Compressor does not operate"

(3) The outdoor unit stops between 10 minutes to 1 hour after starting and a check code is indicated on the

remote control. (Check code 03-1E : Refer to Table 9-4-1.)

− 48 −

9-8. Troubleshooting for Air Purifier and Minus Ion

9-8-1. How to Check Whether the Air Purifier is Good or Not

Turn off the power breaker once,
and turn on again after 10 seconds.

FILE NO. SVM-06017

Does the OPERATION lamp blink?

YES

Turn off the power breaker and
remove CN34 (Micro switch connector).
Short-circuit between 1 and 2 pin
of CN34 at PC side, and turn on the
power breaker after 10 seconds.

Is DC12V applied

1

between

(Brown/GND) of CN1 of the

micro-switch connector under

OFF status of the micro-switch

micro-switch connector under
ON status of the micro-switch

1) Check operation while short-circuiting CN34 of the main P.C. board.

2) Perform air purifying operation by the remote control.

• In this time, check that the remote control is in status which is shortened by time on

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

3) Be sure not to touch the dust collector, ionizer, or ionized wire unit with the human body.

(Red/DC12V) and

high-voltage unit?

YES

Is there conduction of

(Front panel opened)?

NO

Is there conduction of

(Front panel closed)?

YES

the reactivation preventive timer and all display lamps go on for approx. 3 seconds
when a signal is received.

If time on the reactivation preventive timer is not shortened,

( )

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

(Because the power ON/OFF is controlled on the program)

NO

NO

YES

NO

Is DC12V applied

1

between

P.C. board (WP-008)?

Micro-switch malfunction

(+) and 2 (−)

of CN33 of the main

YES

Micro-switch is stuck

NO

To item Power supply is not turned on

Replace the main P.C. board (WP-008)

Replace micro-switch.

• Conduction check of micro-switch

Push the switch

ON

Tester

ON

Releaes the switch

OFF

Does the indoor fan rotate?

Does the plasma lamp (Blue) or

the filter lamp (Orange) go on?

Does the plasma lamp

go off within 2 seconds after

it was ON, and does the

filter lamp (Orange) go on?

Are the dust collector

Operation check Primary check

and ionizer dried?

(Electrode check)

Refer to items, cleaning and check
for the dust collector/ionizer/ionized
wire units.

When the ionized wire is
disconnected or when dirt is
not cleaned even cleaned,

( )

replace each unit.

YES

YES

YES

YES

NO

NO

NO

YES

Is DC-5V to DC-10V

applied between

4 (Brown/Negative voltage)

and 2 (Brown/GND)

of CN33 of the main

P.C. board?

YES

Dry the dust
collector and
ionizer.

Referring to the right figure, check the
high-output voltage of the air filter unit.

(NOTE)

Use an exclusive high voltage tester;
otherwise the tester may be broken.

YES

Is output of the ionizer
approx. 3.9kV to 4.7kV?
Is output of the collector
approx. 2.9kV to 3.7kV?

YES

Are the dust

collector/ionizer/ionized

wire units dirty?

Is an abnormal sound

(cracking noise) heard

from the electrode?

To item Only indoor fan does not operate

Replace the main P.C. board (WP-008).

• How to check output of the air purifier

NO

GND

Be sure not to come to
contact to the silver part
or not to touch the

[ ]

ionized cables.

NO

NO

<Caution on High Voltage!!>

Ionizer

Output

Replace the high-voltage unit.

No trouble

Collector
output

High-voltage tester

– 49 –

FILE NO. SVM-06017

No. Procedure Check points Causes

5 Press [ ] button once

to start the unit.

• Shorten the time of the restart
delay timer.

• Set the operation mode to COOL.

• Set the fan speed level to AUTO.

• Set the preset temperature much

lower than the room temperature.
(The unit (compressor) operates
continuously in the above
condition.)

1. Check whether or not the
compressor operates.

2. Check whether or not the
OPERATION lamp blinks.

1. The temperature of the indoor
heat exchanger is extremely low.

2. The connection of the heat
exchanger sensor is loose.
(The connector is disconnected.)
(CN01)

3. The heat exchanger sensor and
the P.C. board are defective.
(Refer to Table 9-8-2.)

4. The main P.C. board is defective.

6 If the above condition (No. 6) still

continues, start the unit in the
following condition.

• Set the operation mode to COOL.

• Set the preset temperature much

lower than room temperature.

7 Connect the motor connector to the

motor and turn on the power supply.
Start the unit in the following
condition.

• Set the operation mode to FAN.

• Set the fan speed level to HIGH.

(The unit (compressor) operates
continuously in the above codition.)

1. Check whether or not the
compressor operates.

2. Check whether or not the
OPERATION lamp blinks.

1. Check it is impossible to detect the
voltage (DC 15 V) between 3 and
4 of the motor terminals.

2. The motor does not operate.
(But it is possible to receive the
signal from the remote control.)

3. The motor rotates but vibrates
strongly.

1. The temperature of the indoor
heat exchanger is extremely low.

2. The connector of the heat
exchanger sensor short-circuited.
(CN01)

3. The heat exchanger sensor and
the P.C. board are defective. (Refer
to T ab le 9-8-2.)

4. The main P.C. board is defective.

1. The indoor fan motor is defective.
(Protected operation of P.C. board)

2. The connection of the motor
connector is loose.

3. The P.C. board is defective.

Table 9-8-2 Approximate resistance value of thermo sensor

Temperature 0°C10°C20°C25°C30°C

Resistance value 35.8 20.35 12.59 10.0 7.99

(kΩ)

9-8-2. How to Shorten Time of Restart Delay Timer

1 Press [CLR] button while pressing [CHK] button

with a tip of a pencil.

2 Then press [ ] button to transmit the

signal to the indoor unit.

9-8-3. How to use self cleaning function

The self cleaning function is set from a factory.
To cancel this function, should keep press the
temporary switch for 20 secounds till can hear
the long combination sound and repeat the

same procedure when need to set.

2

1

– 50 –

9-9. Troubleshooting for Remote Control

FILE NO. SVM-06017

Is receiver on

indoor unit exposed

to direct sunlight?

YES

NO

Is there any

thyristor fluorescent

light nearby?

YES

YES

NO NO

Press [ ]

button.

Is transmission

mark indicated?

Does indoor unit

operate when

moving remote control

near receiver or

indoor unit?

YES

Batteries are

exhausted.

The unit does not beep at all.
OPERATION lamp on
indoor unit is not indicated.

NO

Press RESET button

on remote control

with tip of pencil.

Press [ ]

button.

Avoid direct

sunlight.

Keep indoor unit

away from

thyristor

fluorescent light.

Does indoor unit

NO

start to operate by

automatic restart

function?

YES

Does radio sound

is affected by

remote control when

a signal is transmitted

at distance of 5 cm

from radio?

P.C. board is

defective.

Replace

P.C. board.

YES

NO

NO

Replace

batteries.

Note :After replacing batteries,

press the RESET button
with a tip of a pencil.

– 51 –

Is transmission mark

indicated?

YES

Does indoor unit

beep and operate?

YES

Normal

operation

NO

Remote control

is defective.

Replace

remote control.

FILE NO. SVM-06017

10. PART REPLACEMENT

10-1. Indoor Unit

No. Part name Procedures Remarks

1 Front panel

How to remove the front panel

1) Stop the operation of the air conditioner
and turn off its main power supply.

2) Pull the inlet grille toward you to open it
and remove 4 screws fixing the front panel.

3) Remove upper 3 hooks of the front panel
from the back body.

4) Open the horizontal grille right below by
hand.

5) Pull the lower side of the front panel toward
you until it touches the horizontal grille to
remove it.

How to mount the front panel

1) Mount the front panel with the inverse
procedure of “How to remove the front
panel”.

2) Push 3 places (right, left and center) of the
air outlet.

3) Check the gap between the front panel and
the back body.
If you operate the air conditioner in cooling
or dry operation without pushing the 3
places, the surface of the front panel may
be covered with frost and have dewdrops.

(2)

4-screws

(2)

(2)

(3)

(4)

2 Electrical part

assembly

1) Remove the front panel with the procedure 1.

2) Remove the screw fixing the electrical part
box.

3) Remove the drain guide.

4) Remove the connector (5P) for the fan
motor and the connector (6P) for the louver
motor from the microcomputer assembly.

5) Remove the screw for the earth, and pull
the electrical part base toward you to
remove it from the main unit.

6) Pull out the TC sensor from the sensor
holder.

(3) Drain Guide

When assembling the electrical parts
assembly, make the connecting cable
U-shaped and put it in the drain pan.

(5) Screw

(2) Screw

(6) TC sensor

5P

6P

– 52 –

FILE NO. SVM-06017

No. Part name Procedures Remarks

3 Horizontal grille

4 Heat exchanger

5 Cross flow fan

1) Remove center 2 shafts of the horizontal

grille from the back body.

2) Remove left shaft of the horizontal grille

from the back body.

3) Remove the horizontal grille from the back

body.

1) Remove the front panel, electrical parts

assembly and the horizontal grille with
procedure 2 and 3.

2) Remove the screw on the rear side of the

main unit to remove the pipe holder.

3) Remove 2 screws fixing the heat

exchanger and the bearing base.

4) Remove 2 screws fixing the heat

exchanger fixtures (upper and lower) and
the back body then pull out the upper side
of the heat exchanger slowly.

1) Remove the front panel, electrical parts

assembly, horizontal grille and the heat
exchanger with procedure 4.

2) Loosen the set screw of the cross flow fan.

3) Remove 2 screws fixing the bearing base

and the back body.

4) Pull the cross flow fan toward you.

(1) Center shafts

(2) Left shafts

Pipe holder

(3) 2 screws

(2) Screw

Bearing base

(4) 2 screws

(3) Screws

(2) Set screw

6 Bearing base

7 Fan motor

1) Remove the front panel, electrical parts

assembly, horizontal grille, heat exchanger
and the cross flow fan with procedure 5.

2) Remove the bearing from the bearing base.

If the housing protrudes from the base
bearing, put the housing in position and
assemble the bearing to the bearing base.

1) Remove the front panel, electrical parts

assembly, horizontal grille, and the heat
exchanger with procedure 4.

2) Loosen the set screw of the cross flow fan.

3) Remove 2 screws of the motor fixture.

4) Remove the lower side of the body (R) and

move it right to remove it.

5) Remove the motor from the motor fixture.

– 53 –

When assembling the cross flow fan, fix it
with the set screw at the position where the
gap between the back body and the right
surface of the cross flow fan is 4 mm.

Bearing base

Bearing

(4)

(3) 2 screws

(4) BODY (R)

Motor fixture

FILE NO. SVM-06017

10-2. Outdoor Unit

No. Part name Procedures Remarks

1 Common

procedure

1) Stop the operation of the air conditioner and turn off

its main power supply or remove the power supply
cord.

2) Remove the electrical parts cover .

(4 screws ∅4 x 10L)

3) Remove 2 cord clamps (4 screws ∅4 x 22L) and

disconnect the power supply cord and connecting
cable after removing 6 screwson on the terminal
block and 1 ground screw on the electrical parts
base.

4) Remove the top cabinet. (7 screws ∅4 x 10L)

5) Remove the front cabinet. (2 screws ∅4 x 10L)

6) Remove the side cabinet

(4 screws ∅4 x 10L & 2 screws ∅4 x 14L)

Top cabinet

Front cabinet Side cabinet

4 screws ∅4 x 22L

Electrical
parts cover

2 Running

capacitor
for compressor

Running

3

capacitor
for fan motor

4

Magnetic
contactor

Spark killer

5

(Cooling only model)

1) Perform the common procedure 1

2) Remove the capacitor band. (1 screw ∅ 4 x 10L)

3) Disconnect the lead wires from the capacitor

terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor

terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (2 screws ∅4 x 10L)

3) Disconnect the lead wires from the terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the terminal.

Spark killer

Magnetic contactor

Running capacitor
for compressor

Running capacitor
for fan motor

– 54 –

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (E-Parts Assy)

FILE NO. SVM-06017

Location Part Location Part

No. No. No. No.

402 43T60002 TERMINAL BLOCK; 3P 405 43T69487 PC BOARD ASSY ; WRS-LED
403 43T50004 SENSOR; HEAT EXCHANGER 407 43T62003 CORD CLAMP
404 43T50314 SENSOR;THERMOSTAT 411 43T69591 PC BOARD

Description Description

413 43T63310 SENSOR HOLDER

– 55 –

11-2. Indoor Unit

FILE NO. SVM-06017

Location Part Location Part

No. No. No. No.

201 43T00409 FRONT PANEL ASSY 218 43T49009 SPRING
202 43T09388 GRILLE ASSY 219 43T49036 PLATE; EVA-SEAL
203 43T80306 AIR FILTER (L) 220 43T49039 HOLDER; PLATE EVA-SEAL
204 43T80312 AIR FILTER (R) 221 43T49038 PLATE; EVA-SEAL
206 43T01306 MARK 222 43T49037 HOLDER; PLATE EVA-SEAL
207 43T03010 BODY; RIGHT 223 43T79007 GUIDE DRAIN
208 43T03011 BODY; LEFT 224 43T39016 FIX FOR MOTOR
209 43T03012 HIDE; CLAW 226 43T21371 MOTOR FAN
210 43T09345 LOUVER-H 227 43T20314 FAN; CROSS FLOW
211 43T70301 HOSE ASSY;DRAIN (RAS-30NKP2B) 228 43T22309 ASM-M-BEARING
211 43T70309 HOSE ASSY; DRAIN (RAS-30NKP-AR) 229 43T39015 BASE; BEARING
212 43T21367 STEPPING MOTOR 230 43T03344 BACK BODY ASSY
213 43T44310 REFRIGERATION CYCLE ASSEMBLY 231 43T07022 HOLDER; PIPE
214 43T47311 PIPE; DELIVERY 232 43T82007 PLATE; INSTALLATION
215 43T47316 PIPE; SUCTION 234 43T69422 WIRELESS-REMOCO
216 43T49010 PIPE; SHIELD 235 43T83003 HOLDER; REMOTE CONTROLLER
217 43T19003 FIX-P-SENSOR 236 43T62029 COVER; TERMINAL

Description Description

− 56 −

11-3. Outdoor Unit RAS-30N2A2B

)

;

FILE NO. SVM-06017

Location Part Location Part

No. No. No. No.

1 43T00024 PANEL; AIR OUTLET 20 43T62015 PROTECTOR; CORD
2 43T00025 PANEL; FRONT 24 43T21318 MOTOR FAN;
3 43T00026 PANEL;SIDE
4 43T42322 BASE ASSY 25 43T20301 FAN;PROPELLER;PP491
5 43T19320 GUARD; FIN 26 43T96001 BUSHING
6 43T19319 GUARD; FAN 27 43T96004 BUSHING; CORD
7 43T91001 PLATE;ROOF 28 43T62013 COVER; E-PARTS
8 43T42005 PLATE; VALVE; PACKED 29 43T52306 MAGNETIC CONTACTOR

9 43T15001 HANDLE 30 43T55345 MF-CAPACITOR
10 43T43019 CONDENSER ASSY 31 43T55321 MF CAPACITOR (3.5uF 450V)
11 43T46338 VALVE,PACKED 15.88 DIA 32 43T96003 CLIP; CABLE
12 43T46308 VALVE;PACKED 6.35 DIA 40 43T47317 NUT; FLANGE
13 43T47334 BONNET; 15.88 DIA. 43 43T33002 SPARK-KILLER
14 43T47331 BONNET, 6.35 DIA 44 43T47025 CAPILLARY TUBE; 2.4 DIA

16 43T60324 TERMINAL BLOCK
18 43T41399 COMPRESSOR;NHJ47NAHT 49 43T47308 CAPILLARY TUBE; 1.0 DIA
19 43T62014 PROTECTOR; CORD

Description Description

AC220V 60Hz(Made in Japan

6P 48 43T45005 DRYER

– 57 −

11-4 Outdoor Unit RAS-30N2A-AR

;

FILE NO. SVM-06017

Location Part Location Part

No. No. No. No.

1 43T00024 PANEL; AIR OUTLET 19 43T62014 PROTECTOR; CORD
2 43T00025 PANEL; FRONT 20 43T62015 PROTECTOR; CORD
3 43T00026 PANEL;SIDE 24 43T21316 MOTOR FAN; AC220-240V 50HZ
4 43T42322 BASE ASSY 25 43T20301 FAN;PROPELLER;PP491
5 43T19320 GUARD; FIN 26 43T96001 BUSHING
6 43T19319 GUARD; FAN 27 43T96004 BUSHING; CORD
7 43T91001 PLATE;ROOF 28 43T62013 COVER; E-PARTS
8 43T42005 PLATE; VALVE; PACKED 29 43T52305 MAGNETIC CONTACTOR

9 43T15001 HANDLE 30 43T55345 MF-CAPACITOR
10 43T43019 CONDENSER ASSY 31 43T55321 MF CAPACITOR (3.5uF 450V)
11 43T46338 VALVE,PACKED 15.88 DIA 32 43T96003 CLIP; CABLE
12 43T46308 VALVE;PACKED 6.35 DIA 40 43T47317 NUT; FLANGE
13 43T47334 BONNET; 15.88 DIA. 43 43T33002 SPARK-KILLER
14 43T47331 BONNET, 6.35 DIA 44 43T47025 CAPILLARY TUBE; 2.4 DIA

16 43T60324 TERMINAL BLOCK
18 43T41387 COMP ASSY 49 43T47308 CAPILLARY TUBE; 1.0 DIA

Description Description

6P 48 43T45005 DRYER

− 58 −

FILE NO. SVM-01011(1)

TOSHIBA CARRIER (THAILAND) CO.,LTD.

144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI,

AMPHUR MUANG, PATHUMTHANI 12000,THAILAND.

– 59 –