Toshiba RAS-13YA-E, RAS-13YK-E, RAS-13YA-ES, RAS-13YK-ES SERVICE MANUAL

SERVICE MANUAL

AIR-CONDITIONER

SPLIT WALL TYPE

RAS-13YKX / RAS-13YAX

RAS-13YK-E / RAS-13YA-E

FILE NO. DAS-SM-00-002

SUPPLEMENT

RAS-13YK-ES / RAS-13YA-ES

RAS-13YK-HX / RAS-13YA-HX

RAS-13YKX-T / RAS-13YAX-T

RAS-13YKX-T2 / RAS-13YAX-T2

CONTENTS

1. SPECIFICATIONS ..................................................................................... 3

2. CONSTRUCTION VIEWS ........................................................................ 7

3. WIRING DIAGRAM .................................................................................. 9

4. SPECIFICATIONS OF ELECTRICAL PARTS ..................................... 10

5. REFRIGERANT CYCLE DIAGRAM ..................................................... 12

6. CONTROL BLOCK DIAGRAM ............................................................. 13

7. OPERATION DESCRIPTIONS................................................................ 14

8. INSTALLATION PROCEDURE .............................................................. 19

9. TROUBLESHOOTING CHART .............................................................. 32

10. PART REPLACEMENT .......................................................................... 47

11. EXPLODED VIEWS AND PARTS LIST .............................................. 51

– 2 –

1. SPECIFICATIONS

RAS-13YK-E/13YA-E, RAS-13YK-ES/13YK-ES

MODEL

ITEM

Capacity kW *1

Phase Single V220–240Power s ource

Hz 50 Power consumption kW 1,25–1,29 Power fac t o r % 98–95

Running current

Star ting current A 24 Moisture removal lit/h 2,0

Noise (SPL at 1 meter)

Refrigerant

Refrigerant control Capillary tube

Interconnection pipe

Condensate drain pipe Outer diameter mm 16

INDOOR UNIT RAS-13YK-E RAS-13YK-ES

Net weight kg 8 Evaporator type Finned tube Indoor fan type Cross flow fan

Fan motor output W 20 Air filter Polypropylene net filter (Washable)

OUTDOOR UNIT RAS-13YA-E RAS-13YA-ES

Net weight kg 37 39 Condenser type Finned tube Outdoor fan type Propeller Air flow rate (220–240V) m³/h 1700–1900 Fan motor output W 27 (UE6-31C5P)

Compressor

Safety device Fuse, Overload relay Auto louver Ye s Usable outdoor temperature range °C21–43

Indoor/Outdoor A 0,15/5,66–0,15/5,53

Indoor (H/M/L) dB (A) 44 / 39 / 34 Outdoor (220–240V) dB (A) 47–48 47–48 Name of refrigerant R-22 R-410A Rated volume kg 0,90 0,82

Gas side size mm 12,7 9,52 Connection type Flare connection Liquid side size mm 6,35 Connection type Flare connection Maximum length (of one way) m *215 Maximum height difference Indoor unit Outdoor unit

Height mm 265 Width mm 790Dimensions Depth mm 189

High fan m³/h 650 Medium fan m³/h 560Air flow rate Low fan m³/h 510

Height mm 538 Width mm 780Dimensions Depth mm 300

Model 2KS224D5CD02 PA150X2T-4FM Output W 1100

↑ ↓

V220V–240V

RAS-13YK-E/13YA-E RAS-13YK-ES/13YA-ES

Cooling

220V–240V

3,70–3,75

Specifications are subject to change without notice.

– 3 –

RAS-13YKX/13YAX, RAS-13YK-HX/11-3YA-HX

MODEL

ITEM

Capacity kW *1

Phase Single V220–240Power source

Hz 50 Power consumption kW 1,25–1,29 1,04–1,08 Power fac to r % 98–95 98–95

Running current

Starting current A 24 22 Moisture removal lit/h 2,0

Noise (SPL at 1 meter)

Refrigerant

Refrigerant control Capillar y tube

Interconnection pipe

Condensate drain pipe Outer diameter mm 16

INDOOR UNIT RAS-13YKX RAS-13YK-HX

Net weight kg 8 Evaporat or type Finned tube Indoor fan type Cross flow fan

Fan motor output W 20 Air filter Polypropylene net filter (Washable)

OUTDOOR UNIT RAS-13YAX RAS-13YA-HX

Net weight kg 37 40 Condenser type Finned tube Outdoor fan type Propeller Air flow rate (220–240V) m³/h 1700–1900 1730–1930 Fan motor output W 27 (UE6-31C5P) or 30 (HF-240-30A) 28 (HF-230-28 P)

Compressor

Safety device Fuse, Overload relay Auto louver Ye s Usable outdoor temperature range °C21–43

Indoor/Outdoor A 0,15/5,66–0,15/5,53 0,15/4,68–0,15/4,61

Indoor (H/M/L) dB (A) 44 / 39 / 34 44 / 39 / 34 Outdoor (220–240V) dB (A) 47–48 49–50 Name of refrigerant R-22 Rated volume kg 0,80 0,75

Gas side size mm 12,7 Connection type Flare connection Liquid side size mm 6,35 Connection type Flare connection Maximum length (of one way) m *215 Maximum height difference Indoor unit Outdoor unit

Height mm 265 Width mm 790Dimensions Depth mm 189

High fan m³/h 650 Medium fan m³/h 560Air flow rate Low fan m³/h 510

Height mm 538 Width mm 780Dimensions Depth mm 300

Model PH160T2-4L2 PH142T2-4K7 Output W 1100

↑ ↓

V220V–240V

RAS-13YKX/13YAX RAS-13YK-HX/13YA-HX

Cooling

220V–240V

3,70–3,75 3,55–3,55

Specifications are subject to change without notice.

– 4 –

RAS-13YKX-T / 13YAX-T, RAS-13YKX-T2/13YAX-T2

MODEL

ITEM

Capacity kW *1

Phase Single

V220Power s ource

Hz 50 Power consumption kW 1,16 1,04 Power fac t o r % 98

Running current

Star ting current A 22 Moisture removal lit/h 2,0

Noise (SPL at 1 meter)

Refrigerant

Refrigerant control Capillary tube

Interconnection pipe

Condensate drain pipe Outer diameter mm 16

INDOOR UNIT RAS-13YKX-T RAS-13YKX-T

Net weight kg 8 Evaporator type Finned tube Indoor fan type Cross flow fan

Fan motor output W 20 Air filter Polypropylene net filter (Washable)

OUTDOOR UNIT RAS-13YAX-T RAS-13YAX-T

Net weight kg 38 41 Condenser type Finned tube Outdoor fan type Propeller Air flow rate (220V) m³/h 1700 1830 Fan motor output W 27 (UE6-31C5P) or 30 (HF-240-30A) 28 (AF-230-28P) or 42 (HF-240-42A)

Compressor

Safety device Fuse, Overload relay Auto louver Ye s Usable outdoor temperature range °C21–43

Indoor/Outdoor A 0,15/5,24 0,15/4,68

Indoor (H/M/L) dB (A) 44 / 39 / 34 Outdoor (220V) dB (A) 47 49 Name of refrigerant R-22 Rated volume kg 0,72 0.83

Gas side size mm 12,7 Connection type Flare connection Liquid side size mm 6,35 Connection type Flare connection Maximum length (of one way) m *215 Maximum height difference Indoor unit Outdoor unit

Height mm 265 Width mm 790Dimensions Depth mm 189

High fan m³/h 650 Medium fan m³/h 560Air flow rate Low fan m³/h 510

Height mm 538 Width mm 780Dimensions Depth mm 300

Model RM5515FNE96 Output W 1100

↑ ↓

V220V

RAS-13YKX-T/13YAX-T RAS-13YKX-T2/13YAX-T2

Cooling

220V

3,60

Specifications are subject to change without notice.

– 5 –

Note : *1

• Capacity is based on the following temperature conditions.

TEMPERATURE

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

CONDITION COOLING

(DB) 27 °C

(WB) 19 °C

(DB) 35 °C

(WB) 24 °C

Notes : *2 CHARGELESS

• No additional refrigerant required.

• This air conditioner accepts a connection piping length of up to 15m and a head of up to 6m.

• There is no need to add the refrigerant as long as the total length of the connection piping is up to 15m.

– 6 –

2-1. Indoor Unit

2. CONSTRUCTION VIEWS

Air inlet

265

Air outlet

Air filter

790

232 326 232

Hanger

Heat exchanger

1800

Knock out system

13YK-E, 13YK-ES : Without power cord

13YKX, 13YKX-T, 13YKX-T2 : With power cord

13YK-HX : With power cord & plug

Front panel

Back body

189

Drain hose (0,54m)

Hanger

Connecting pipe (0,39m) Flare Ø12,7

(Flare Ø9,52 for 13YK-ES only)

Hanger

2,5

Minimum distance

17 20

265

to wall

178,5

120 or more 120 or more

3,5

40,5

Center line

321

65965,5

450 326

66 or more

Minimum distance to ceiling

HangerHanger

Installation plate outline

790

Connecting pipe (0,49m)

(Flare Ø6,35)

65,5

12626931976

Hanger

For stud bolt (Ø8~Ø10)

For stud bolt (Ø6)

Minimum distance

20 2037

to wall

40,5

60,5

Knock out system

– 7 –

2-2. Outdoor Unit

Detail Drawing

50 36

325

301

Ø11x14 hole

Handle

300

600

R10

Ø6 hole

538

52,5

325

Fan guard

ø420

Ø25Drain outlet

120

6-Ø11x14 hole (for Ø8-Ø10 anchor bolt)

600 780

Gas side (Flare Ø12,7) (Flare Ø9,52 for 13YA-ES)

Liquid side (Flare Ø6,35)

8-Ø6 hole (for fixing outdoor unit)

Electric parts cover

100

(8,5)

130

325 (pitch)

342

Service port

(8,5)

Installation dimension

100 or more

325

100 or more

Air outlet

View

600

Air inlet

600 or more

– 8 –

600 or more

4xØ11x14 Long holes (for Ø8-Ø10 anchor bolt)

3. WIRING DIAGRAM

LOUVER MOTOR

Datail A

RAS-13YK-HX RAS-13YA-HX

L N

Power cord with plug

RAS-13YK-E RAS-13YA-E RAS-13YK-ES RAS-13YA-ES

POWER

TERMINAL

BLOCK

RAS-13YKX RAS-13YAX RAS-13YKX-T RAS-13YAX-T RAS-13YKX-T2 RAS-13YAX-T2

Datail C

FAN MOTOR

RAS-13YA-ES only

L N

Datail B

RAS-13YKX, 13YKX-T RAS-13YKX-T2, 13YK-HX

THERMAL FUSE 77˚C x 1

ORN

P04

BRW

BLU

SG01

DSA

RY02

BLK

WHI

TERMINAL

OUTDOOR TERMINAL

BLK

PNK WHI

BLK

GRN&YEL

OVER LOAD

RELAY

COMPRESSOR

R22

VARISTOR

INDOOR

BLOCK

BLK

CN04

6,3A

250V

BLK

RED

FAN

MOTOR

RAS-13YK-E RAS-13YK-ES

THERMAL FUSE 77˚C x 2

ORN

1 1

R21

VARISTOR

C15

L01

F01

RY01

CN11 CN01

YEL

BLK

BRW

WHI

GRN&YEL

INDOOR

OUTDOOR

GRN & YEL

CHASSIS

RED

CAPACITOR CAPACITOR

RED

WHI

PNK

YEL

BLU

CN07

C01

R01

CR03 IC 03

C58

5 3 1 5 3 1

BLK

PNK

23456

WHI

AC FAN MOTOR

INFRARED RAYS RECEIVE

AND INDICATION PARTS

4433221

BLU

4321

BLU

ORN

RED

2 2

BLU

BRW

1 1

DB01

C02

POWER SUPPLY

DC 12V

CIRCUIT

DC 5V

CN03CN10

BLK

THERMO SENSOR

EXCHANGER

(TA)

COLOR IDENTIFICATION

BROWN

BRW

RED

WHITE

WHI

YEL

YELLOW

BLU

BLUE

BLK

BLACK

GRY

GRAY

PNK

PINK

ORN

GRN&YEL

ORANGE

GREEN & YELLOW

BLK

PNK

WHI

MCC-798

BLK

HEAT

SENSOR

(TC)

CN25

CN13

– 9 –

4. SPECIFICATIONS OF ELECTRICAL PARTS

4-1. Indoor Unit

RAS-13YKX, RAS-13YK-E, RAS-13YKX-T RAS-13YKX-T2, RAS-13YK-HX, RAS-13YK-ES

No. PARTS NAME TYPE SPECIFICATIONS

Output (Rated) 20W, 6poles, 1phase, 220–240V, 50Hz

Fan motor

2 Thermo. sensor (TA-sensor) (Microprocessor) 10kW at 25°C

3 Switching transformer SWT-47

4 Microcomputer TMP87CK40AN

Power relay, Common relay

(RY01, RY02)

6 Heat exchanger sensor (TC-sensor) (Microprocessor) 10kW at 25°C

7 Line filter (L0) SS11V-06180 18mH, AC 0,6A

8 Diode (DB01) D3SBA60 4A, 600V

9 Capacitor (C02) ECEC2GA470BL 47mF, 4 0 0 V

10 Fuse (F01) TSCR T6, 3A, 250V

11 Varistor (R21, R109) 15G561K 560V

12 Resistor (R01) 5,6W, 2W

13 Louver motor MP35EA12 Output (Rated) 2W, 10poles, 1phase DC 12V

(for indoor) MMF-240-20-4A

DI1U Coil : DC 12V 75mA, Rated AC 250V 20A

Winding resistance (W) (at 20°C)

Red-Black White-Black1

220,8 324,3

4-2. Outdoor Unit

RAS-13YAX, RAS-13YA-E, RAS-13YAX-T RAS-13YAX-T2, RAS-13YA-HX, RAS-13YA-ES

No. PARTS NAME TYPE SPECIFICATIONS

Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz

1 Compressor

RAS-13YA-E

RAS-13YAX

RAS-13YAX-T RAS-13YAX-T2

RAS-13YA-HX

RAS-13YA-ES

2KS224D5CD02

PH160T2-4L2

RM5515FNE96

PH142T2-4K7

PA150X2T-4FM

Winding resistance (W) (at 20°C)

Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz

Winding resistance (W) (at 20°C)

Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz

Winding resistance (W) (at 20°C)

Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz

Winding resistance (W) (at 20°C)

Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz

Winding resistance (W) (at 20°C)

C-R C-S

2,21 2,92

C-R C-S

2,43 3,78

C-R C-S

2,16 3,90

C-R C-S

2,43 3,78

C-R C-S

2,49 3,95

– 10 –

No. PARTS NAME TYPE SPECIFICATIONS

Output (Rated) 27W, 6poles, 1phase, 220–240V, 50/60Hz

Fan motor

(for outdoor)

Runnin

(for fan motor)

capacitor

RAS-13YA-E RAS-13YA-ES

RAS-13YAX RAS-13YAX-T

RAS-13YA-HX RAS-13YAX-T2

RAS-13YA-E RAS-13YA-ES

RAS-13YAX RAS-13YAX-T

RAS-13YAX-T2

UE6-31C5P

HF-240-30A

(For altinate use)

HF-240-42A

(For altinate use)

SK-50FMP1,5U2 AC 500V, 1,5mF

DS501155BPQA AC 500V, 1,5mF

DS451205BPQA AC 450V, 2,0mF

Winding resistance (W) (at 20°C)

Output (Rated) 27W, 6poles, 1phase, 220–240V, 50/60Hz

Winding resistance (W) (at 20°C)

Output (Rated) 30W, 6poles, 1phase, 220–240V, 50/60Hz

Winding resistance (W) (at 20°C)

Output (Rated) 28W, 6poles, 1phase, 220–240V, 50/60Hz

Winding resistance (W) (at 20°C)

Output (Rated) 42W, 6poles, 1phase, 220–240V, 50/60Hz

Winding resistance (W) (at 20°C)

Red-Black White-Black

210 435

Red-Black White-Black

210 435

Red-Black White-Black

245 388

Red-Black White-BlackAF-230-28P

162,1 233,5

Red-Black White-Black

176, 291

Running capacitor

(for compressor)

5 Overload relay

RAS-13YA-HX

RAS-13YAX

RAS-13YA-E RAS-13YA-ES

RAS-13YA-HX RAS-13YAX-T RAS-13YAX-T2

RAS-13YAX RAS-13YA-E RAS-13YAX-T RAS-13YAX-T2 RAS-13YA-HX

RAS-13YA-ES

SK-45FMP02U2 AC 450V, 35mF

SH-D CAP AC 400V, 35mF

SK-40CMP35U1 AC 400V, 25mF

SH-D CAP AC 440V, 25mF

LAAO00A U/T 9,0A (80°C), OPEN 135 ± 5°C, CLOSE 75 ± 11°C

— Internal Overload Use

– 11 –

5. REFRIGERANT CYCLE DIAGRAM

Connecting pipe 0,39m Ø12,7 (for RAS-13YK-ES Ø9,52)

O.D.:12,7mm O.D.:6,35mm

(for RAS-13YK-ES/ 13YA-ES 9,25mm)

Accumulator

Compressor

Indoor unit

Evaporator

Cross flow fan

Optional piping kits

Packed valve Ø12,7 (for RAS-13YA-ES Ø9,52)

RB-P31BFH1 (3m) RB-P51BFH1 (5m) RB-P71BFH1 (7m)

Condenser

Propeller fan

Packed valve

(Ø6,35)

Capillary tube

Dryer

Refrigerant

Connecting pipe 0,49m Ø6,35

MODEL

RAS-13YK-E

RAS-13YKX

RAS-13YKX-T RAS-13YKX-T2

RAS-13YK-HX

RAS-13YK-ES

A

Compressor

2KS224D5CD02 Ø1,7 x 1,100

PH160T2-4L2 R22 (0,80 kg)

RM5515FNE96

PH142T2-4K7

PA150X2T-4FM Ø1,5 x 900

• For R-22

Standard

50Hz

pressure P

(kg/cm²G)

Standard 5,0 13,0 High 27/19 35/24

Cooling

High temperature 6,5 18,0 High 32/23 43/26 Low temperature 4,0 2,0 Low 21/15 21/15

• For R-410A (RAS-13YK-ES/13YA-ES)

Standard

50Hz

Standard 0,9 10,0 High 27/19 35/24 High temperature 1,1 16,0 High 32/23 43/26Cooling Low temperature 0,6 2,0 Low 21/15 21/15

pressure P

(kg/cm²G)

Outdoor unit

B

Capillary tube

Ø1,7 x 900

Ø1,7 x 800

Surface temp. of heat

exchanger interchanging

pipe T

Surface temp. of heat

exchanger interchanging

pipe T



(°C)



(°C)

Mark ( ) means check points of Gas Leak

C

Refrigerant

Fan s

(indoor)

Fan s

(indoor)

eed

R22 (0,90 kg)

R22 (0,72 kg) R22 (0,83 kg) R22 (0,75 kg)

R410A (0,82 kg)

Ambient temp.

conditions DB/WB (°C)

Indoor Outdoor

Ambient temp.

conditions DB/WB (°C)

Indoor Outdoor

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

– 12 –

Indoor Unit Control Panel

C. P. U

Heat Exchanger Sensor

Thermo. Sensor

Infrared Rays Signal Receiver

Infrared

Rays

Remote Control

Operation (START/STOP)

– 13 –

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Noise Filter

Functions

• Louver Control

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

(Temperature Processing)

• Timer

Compressor, Outdoor Fan

ON/OFF Signal

Louver DriverRelay Driver

Louver

Operation

Display

Timer

Display

ECONO.

Sign Display

6. CONTROL BLOCK DIAGRAM

FAN-ONLY

Sign Display

Indoor

Fan Motor

Louver

Motor

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECONO.

AC 220-240V AC 220V

(RAS-13YKX-T, 13YKX-T2 only)

50Hz

Relay

RY02

Relay

RY01

Compressor

Outdoor Fan Motor

7. OPERATION DESCRIPTIONS

(Room temp. – Set temp.)

Set temp.

OFF

OPERATION

display

ON ON

Compressor

Outdoor fan

(RY01)

Common relay

(RY02)

7-1. FAN ONLY Operation

(The Remote Control MODE Button is Set to the FAN ONLY Operation)

Once the setting is made, the operation mode is memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing [START/STOP] button.

(MODE of the remote control : FAN ONLY)

(1) During this mode, the relay RY01 is always

turned off so that only the indoor fan is operated. RY02 is always turnd on. FAN-ONLY display is lit.

1) When the FAN is set to AUTO, the indoor fan motor operates as shown in Fig 7-1-1.

2) When the FAN is set to LOW, MED. or HIGH, the indoor fan motor operates with a constant in volume as listed in Table 7-1-1.

HIGH

MED

LOW(+)

LOW

(Room temp. – Set temp.)

Set temp.

7-2. COOL Operation

(MODE of the remote control : COOL)

(1) Compressor, outdoor fan and operation display

are controlled as shown in Fig. 7-2-1.

Fig. 7-2-1

(2) Relays RY01 and RY02 are turned on to

energize the outdoor unit, and a cool operation is carried out.

1) When the FAN is set to AUTO, the indoor fan motor operates as shown in Fig 7-2-2.

2) When the FAN is set to LOW, MED, or HIGH, the indoor fan motor operates with a constant in volume as listed in Table 7-1-1.

Fig. 7-1-1 Auto setting of air volume

FAN

Table 7-1-1 Manual setting of FAN SPEED

Indication of

FAN SPEED

LOW

MED

HIGH

HIGH Air volume

(m3/hr)

510

560

650

(Room temp. – Set temp.)

Set temp.

AUTO

HIGH

MED

LOW(+)

LOW

RY01

OFF

LOW

(continuous)

Manual

According to the set

position

Fig. 7-2-2

(3) Once the setting is made, the operation mode is

memorized in the microcomputer so that the same operation can be effected thereafter simply

– 14 –

by pushing the START/STOP button.

7-2-1. Louver Control

(Room temp. – Set temp.)

Set temp.

OFF

OPERATION

display

Compressor

Outdoor fan

(RY01)

Common relay

(RY02)

ON:6min.

OFF:4min.

ON:5min.

OFF:5min.

(1) Vertical air flow louvers

Positions of vertical air flow louvers are automatically controlled according to the operation status (COOL, AUTO, DRY, FAN ONLY). Besides, positions of vertical air flow louvers can be arbitrarily set by pushing the [SET] button. The louver position which has been set by the [SET] button is stored in microcomputer, and the louver is automatically set at the stored position in the next operation.

(2) Swing

If the [AUTO] button is pushed during running operation, vertical air flow louvers start swinging. When the [AUTO] button is pushed again, swinging stops.

7-3. DRY Operation

(MODE of the remote control : DRY)

(1) Compressor, outdoor fan and operation display

are controlled as shown in Fig. 7-3-1.

Fig. 7-3-1

• The microprocessor turns the compressor on and off at regular intervals (4 to 6 minutes on and/or off). During the compressor off, the indoor fan will operate in the super low position.

• The indoor fan will operate in the AUTO position.

(2) The pattern of operation depending on the

relation between room temperature and set temperature is shown below:

Room temp.

Set temp.+1

Set temp.

Compressor

Outdoor fan

Indoor fan

– 15 –

ON ON ON ON

OFF OFF OFF

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

*Super Low

Fig. 7-3-2

7-4. AUTO Operation

(MODE of the remote control : AUTO)

(1) One of the 2 modes, Cooling or Dry is selected

according to room temperature at which operation is to start, as shown in Fig. 7-4-1. The Fan mode will continue until room temperature reaches a level at which another mode is selected.

7-4-1. Temporary Auto

When the TEMPORARY button is pushed (1 sec), the set temperature is fixed at 24°C and controlled in accordance with the chart shown in Fig. 7-4-1.

Powerful Cooling mode

(The same cooling mode as the room temperature control is set at set temp. –1˚C) The Louver moved downward. (DIRECT AUTO COOL)

Cooling mode

(The same cooling mode as the room temperature control is set at set temp. –1˚C)

Dry mode

(The same dry operation as the room temperature control is set at set temp. –1˚C)

(Room temp. – Set temp.)

7-5. ECONO. Mode

When the ECONO. button is pushed, during COOL and AUTO operation, the OPERATION display is turned off and the ECONO. display is lit and the indoor unit operates quietly and mildly with controlling airflow.

7-5-1. Cooling

(1) In the ECONO. mode, the set temp. by the

remote control is changed automatically as shown in Fig. 7-5-1.

(2) Fan speed → LOW

(˚C)

Set temp. is changed

Fig. 7-4-1

Heat exchanger temperature

7-6. Low-Temperature Limit Control

(Cooling Operation)

The microprocessor detects the indoor heat exchanger temperature so as to prevent freezing up the indoor heat exchanger.

Control is performed as shown in Fig. 7-6-1.

(˚C)

Compressor

Less than 5˚C continues

Outdoor fan

for 5 minutes

OFF

Set temp.

ECONO. button is pushed

Set temp. is changed

Fig. 7-6-1

1H 2H TIME0H

Fig. 7-5-1

– 16 –

7-7. Auto Restart Function

This unit is equipped with an Automatic restarting function which allows the unit to restart and resume the set operating conditions in the event of a supply power shutdown without the use of the hand control.

The operation will resume without warning three minutes after the power is restored.

INFORMATION

The AUTO RESTART FUNCTION is set not to work on shipment from the factory, and so it is necessary to set it to function as required.

• When the system is stand-by (not running)

7-7-1. How to Set the Auto Restart

To set the Auto Restart function, proceed as follows: Access the TEMPORARY button located in the lower

right hand corner beneath the hinged front panel of the indoor unit.

The power supply to the unit must be on - the function will not be set if the power is off.

To enable the Auto Restart function, push the TEMPORARY button continuously for three seconds.

The unit will acknowledge the setting and beep three times. The system will now restart automatically.

The above Auto Restart settings can be carried out:

OPERATION

Push the TEMPORARY button continuously more than three seconds.

TEMPORARY

• When the system is operating

OPERATION

Push the TEMPORARY button continuously more than three seconds.

TEMPORARY

MOTION

Stand-by

↓

The system starts to operate. The green light will be lit.

↓ about three seconds after

The unit beeps three times. The orange light will be lit.

↓

The system is operating. The orange light is lighting.

If the system is not required to run at this time, push the TEMPORARY button once more or use the remote control and the unit will stop.

MOTION

Operating The green light is lit.

↓

The system stops to operate. The green light is turned off.

↓ about three seconds after

The unit beeps three times.

↓

The system stops.

If the system is not required to stop at this time, use the remote control and to restart.

During subsequent operation, the orange light goes on.

• The Auto Restart function will not accept an instruction if timer operation with the remote control is selected.

• During louver swing (AUTO) operation, after restarting by the Auto Restart function, the louver swing stops.

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7-7-2. How to Cancel the Auto Restart

To cancel the Auto Restart function, proceed as follows: Repeat the setting procedure: the unit will acknowledge the instruction and beep three times. The system will now be required to manually restart with the remote control after the main supply is turned off. Cancellation is carried out:

• When the system is stand-by (not running)

OPERATION

Push the TEMPORARY button continuously more than three seconds.

TEMPORARY

• When the system is operating

OPERATION

Push the TEMPORARY button continuously more than three seconds.

TEMPORARY

MOTION

Stand-by

↓

The system starts to operate. The orange light will be lit.

↓ about three seconds after

The unit beeps three times. The green light will be lit.

↓

The system is operating.

If the system is not required to run at this time, push the TEMPORARY button once more or use the remote control and Stop the unit.

MOTION

Operating The orange light is lit.

↓

The system stops to operate. The orange light is turned off.

↓ about three seconds after

The unit beeps three times.

↓

The system stops.

If the system is not required to stop at this time, use the remote control and to restart.

During subsequent operation, the green light goes on.

7-7-3. In Case of Power Failure during the Timer Operation

(1) If ON-TIMER operation is reserved with setting of Auto Restart operation, it is cancelled with power failure.

(The OPERATION lamp on the main unit goes on and off to inform of power failure.) In that case, try to reserve ON-TIMER operation once again.

(2) If OFF-TIMER operation is reserved without setting of Auto Restart operation, the reservation is cancelled

with power failure. (The OPERATION lamp on the main unit goes on and off to inform of power failure.) In that case, try to reserve OFF-TIMER operation. When Auto Restart operation is set, OFF-TIMER reservation is also cancelled with power failure.

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