Toshiba RAS-18YKH-E User manual

SERVICE MANUAL

FILE NO. A00-0001

AIR-CONDITIONER

SUPPLEMENT

SPLIT WALL TYPE

PRINTED IN THAILAND, Apr.,2000

RAS-18YKH-E

RAS-18YAH-E

RAS-18YKH-A

RAS-18YAH-A

– 2 –

CONTENTS

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

2. CONSTRUCTION VIEWS............................................................................ 5

3. WIRING DIAGRAM ..................................................................................... 7

4. SPECIFICATIONS OF ELECTRICAL PARTS ............................................ 8

5. REFRIGERANT CYCLE DIAGRAM............................................................ 9

6. CONTROL BLOCK DIAGRAM ................................................................. 10

7. OPERATION DESCRIPTION .................................................................... 12

8. INSTALLATION PROCEDURE ................................................................. 16

9. TROUBLESHOOTING CHART ................................................................. 20

10. EXPLODED VIEWS AND PARTS LIST .................................................... 37

– 3 –

Model

Item

Capacity *1(kW)

Phase

Power source (V)

(Hz)

Power consumption (kW)

Power factor (%)

Running current Indoor (A)

Outdoor (A)

Starting current (A)

Moisture removal (lit/h)

Noise Indoor (H/M/L) (dB)

Outdoor (dB)

Refrigerant Name of refrigerant

Rated volume (kg)

Refrigerant control Gas side size (mm)

Connection type

Liquid side size (mm)

Interconnection pipe Connection type

Maximum length (of one way) *2(m)

Maximum height difference

Indoor unit (m)

Outdoor unit

Codensate drain pipe Outer diameter (mm)

INDOOR UNIT Height (mm)

Dimension Width (mm)

Depth (mm)

Net weight (kg)

Evaporator type

Indoor fan type High fan (m³/h)

Air volume Medium fan (m³/h)

Low fan (m³/h)

Fan motor output (W)

Air filter

OUTDOOR UNIT Height (mm)

Dimension Width (mm)

Depth (mm)

Net weight (kg)

Condenser type

Outdoor fan type

Airflow volume (m³/h)

Fan motor output (W)

Compressor Model

Output (W)

Safety device

Auto louver

Usable outdoor temperature range (°C)

1. SPECIFICATIONS

Specifications are subject to change without notice.

RAS-18YKH-E, RAS-18YAH-E RAS-18YKH-A, RAS-18YAH-A

Cooling Heating Cooling Heating

220–240V 240V

5,0 6,35–6,50 5,0 6,50

Single

220–240V 240V

2,03–2,20 2,33–2,52 2,20 2,52

91–81 92–85 81 85

0,28–0,30 0,28–0,30 0,30 0,30

9,82–11,00 11,22–12,10 11,00 12,10

2,0

44/41/38

54–56 55–57 56 57

R-22

1,45

Capillary tube

12,7

Flare connection

6,35

Flare connection

RAS-18YKH-E / RAS-18YKH-A

298

1050

180

Finned tube

Cross flow fan

750

650

550

Polypropylene net filter (Washable)

RAS-18YAH-E RAS-18YAH-A

690

880

310

Finned tube

Propeller

220V 240V 240V

3380 3560 3560

PH280X3-4MS

2000

Fuse, overload relay

Yes

11 to 43 –10 to 21 11 to 43 –10 to 21

↑

↓

– 4 –

Note : *1

• Capacity is based on the following temperature conditions.

Condition

Temperature

Indoor unit inlet air temperature (DB)

(WB)

Outdoor unit inlet air temperature (DB)

(WB)

JIS C9612-1994

Cooling Heating

27°C 20°C

19°C —

35°C 7°C

24°C 6°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.

– 5 –

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

RAS-18YKH-E, RAS-18YKH-A

1050

1040

261 264 274 251

180

123

990

274 264

123402402

1050

298

248

298

450

59.6 5

55 16

112.8 136

Deodorizing filter

Air inlet

Indoor heat exchanger

Dust collecting filter

Air filter

Power cord (1,7m)

Air outlet

Hanger

Front panel

Rear plate

Hanger

Auxiliary pipe (0,49m)

Flare Ø6,35

Auxiliary pipe (0,39m)

Flare Ø12,7

Drain hose

0,60m

Anchor bolt hole

Ø8 ~ Ø10

Anchor bolt hole

Ø6

Detail of installing dimensions of the indoor unit

Minimum distance

from wall

Minimum distance

from wall

Minimum distance

from ceiling

Hanger

Ø65

Piping hole

Installation plate

Center line

Ø65

Piping hole

Wireless

remote control

Remote control holder

or more

80 or more 130 or more

– 6 –

2-2. Outdoor Unit

RAS-18YAH-E, RAS-18YAH-A

340

Ø12 x 18 hole

600

Detail Drawing

74 12

340

68 52

100 or more

100 or more 600 or more

600 or more

Mounting dimension of anchor bolt

600

Air inlet

Air outlet 4 x Ø12 x 18 for Ø8–Ø10 anchor bolt

Handle

690

340

63,8

880

310

340 (pitch)

364 12

Electric

Parts cover

Liquid side

(Flare Ø6,35)

Gas side

(Flare Ø15,88)

Service port

120

140

600

4–Ø12 x 18 hole

(for Ø8–Ø10 anchor bolt)

Ø25 Drain outlet

– 7 –

COLOR

IDENTIFICATION

BRW : BROWN

RED : RED

WHI : WHITE

YEL : YELLOW

BLU : BLUE

BLK : BLACK

GRY : GRAY

PNK : PINK

ORN : ORANGE

GRN &YEL :GREEN &

ORANGE

Buzzer

parts

Fan motor

Thermal fuse

164˚C

Indication parts

Infrared rays

receive parts

654321

6 5 4 3 2 1

4 5 6 7 8 9321 4 5 6 7 8 9321

Louver

motor

BLU

PNK

YEL

WHI

RED

BLK

WHI

BRW

GRY

YEL

Transformer

MCC-629

T01

RED

CN32

C26

Running

capacity

CN13

CN10CN24

C27

C28

TNR

R106

F01 Fuse

T5A

250V

L01

Filter

CN15

CN16 CN25

TNR R98

TRIAC D04

CR01

CN07

TH01

PTH CN12

CN01

CN22CN05CN04

CN26

CN17

CN03

Grand

terminal

CN30

PJ18

CN11

CN33

GRY

BLU

BLK

BLU

YEL

RED

WHI

BLK

WHI

RED

GRY

BLU

YEL

BLK

Coil for

4-way valve

BLK

BLU

ORN

RED

BRW

WHI

BLU

11 22 33

211

Switch parts

12 3

123

1 2 3

3 5

321

31 2 3

1 2 3

1 2

Heat exchanger

sensor

Discharge

temperature

sensor (TD)

21 21

Thetmo.

sensor

21 21

Thermal fuse

77˚C

Transformer

Indoor terminal block

Outdoor terminal block

Power supply

18YAH-E : 220–240V ~, 50Hz

18YAH-A : 240V ~, 50Hz

Ferrite core

GRN &YEL GRN &YEL

Chassis

BLK RED

RED

BLK

BLK RED

Crank case

heater Fuse

Fuse

RED

WHI

BLK BLK

PNK WHI

RED

Capacitor Capacitor

Compressor

Magnetic

relay

Fan motor

21 21

ORN

RED

ORN

BLK

WHI

BLU

1 1

3 3

1 1

3 3

1 1

3 3

CN02

CN03

CN11

CN04

CN01

CN05

CN06 MAIN P.C. BOARD (MCC-1275)

MAIN P.C. BOARD (MCC-1293)

CR12

RY05

RY07

TNR R96

IC07

CR11

1 1

3 3

5 5

7 7

9 9

1 1

3 3

1 1

2 2

3 3

1 1

3 3

1 1

BLK

Heat

exchanger

sensor (TE)

1 1

3 3

TNR

R73

TNR R74 DSA

T5A, 250V AC

52C

6T3

5L3

4T2

3L2

2T1

1L1

BRW

BLK WHI

GRN

YEL

RED

WHI

BLK

3. WIRING DIAGRAM

– 8 –

No. Parts name Type Specifications

Output (Rated) 31W, 2poles, DC35V, 19W

1 Fan motor (for indoor) AFP-220-31-4B Winding resistance (Ω)Red-Black White-Black

(at 20°C) 267,8 147,7

2 Thermo. sensor (TA-sensor) (microprocessor) 10kΩat 25°C

3 Transformer (T01) TTZ MCC-629

4 Microcomputer TMP87CK40AN

5 Heat exchanger sensor (microprocessor) 10kΩat 25°C

(TC-sensor)

6 Line filter (L01) 25mH, AC 0,7A

7 Diode (DB01) KBP06M

8 Capacitor (C01) ECAIEHG222E 220µF, 25V

9 Fuse (F01) MT3 T5A, 250V

10 Varistor (R98, R106) 15G431K 430V

11 PTH (TH01) 82Ω

12 Louver motor MP35EA7 Output (Rated) 2W, 10poles, 1phase DC12V

No. Parts name Type Specifications

Output (Rated) 2000W, 2poles, 1phase, 220–240V, 50Hz

1 Compressor PH280X3-4MS Winding resistance (Ω)Red-Black White-Black

(at 20°C) 1,35 2,68

Output (Rated) 65W, 6poles, 1phase, 220–240V, 50Hz

2 Fan motor (for outdoor) MMF-230-65C Winding resistance (Ω)Red-Black White-Black

(at 20°C) 71,2 139,0

3 Running capacitor (for fan motor) SK45FMP AC 450V, 3,5µF

4 Running capacitor SK42CMP45U1 AC 420V, 45µF

(for compressor)

5 Solenoid coil (for 4-way valve) LB60012 AC 200/240V

6 Thermo. sensor TE, TD 10kΩat 25°C

7 Case heater 240V, 28W

8 Magnetic switch FC2S 3a1b

9 Transformer FT67 220–240V

10 Microcomputer TMP470840

11 Varistor (R73, 74, 86) 15G471K 470V

12 Fuse (F01) MT3 T5A, 250V

4. SPECIFICATIONS OF ELECTRICAL PARTS

4-1. Indoor Unit

RAS-18YKH-E, RAS-18YKH-A

4-2. Outdoor Unit

RAS-18YAH-E, RAS-18YAH-A

– 9 –

Mark ( ) means check points of Gas Leak

Cooling

Heating

INDOOR UNIT A

Indoor heat

exchanger

Cross flow fan

Accumulator

Compressor

PH280X3-4MS

Packed valve

(Ø12,7)

Gas container connection (Reinstall etc.)

(Note)

Maximum pipe length is 15m

Maximum pipe head is 6m

Packed valve

(Ø6,35)

Capillary tube

Ø1,2 x 700

Capillary tube

Ø1,7 x 600

Liquid tank

550cc

Heating

4-way valve

Cooling

Heating

Cooling

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

Outdoor heat exchanger

Propeller fan Refrigerant

R-22 1,45kg

OUTDOOR UNIT

0,39m

(Connecting pipe)

Ø12,7

0,49m

(Connecting pipe)

Ø6,35

5. REFRIGERANT CYCLE DIAGRAM

Standard pressure Surface temp. of heat

50Hz P exchanger interchanging Fan speed

(kg/cm²G) pipe T1 (°C) (indoor)

18YAH-E, A 18YKH-E, A

Standard 21,0 53,0 High

Heating High temperature*1 20,5 to 25,5 52,0 to 61,0 Low

Low temperature 17,0 45,0 High

Standard 3,0 9,0 High

Cooling High temperature 3,5 11,0 High

Low temperature 2,5 1,5 Low

Ambient temp.

conditions DB/WB

(°C)

Indoor Outdoor

20/– 7/6

27/– 21/15

20/– –10/–10

27/19 35/24

32/23 43/26

21/15 21/15

Note :

• Measure the heat exchanger temperature at the center of U-bend.(By means ofTC sensor.)

*1 • During heating overload, the high temperature limit control operation is included.

– 10 –

Infrared Rays Signal Receiver

Functions

ECONO.

Louver Direction Setting

Louver AUTO Swing

OFF TIMER Setting

ON TIMER Setting

Fan Speed Selection

Thermo. Setting

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Operation (START/STOP)

Clock Frequency

Oscillator Circuit

8MHz

Heat Exchanger Sensor

Infrared

Rays Initializing Circuit

M.C.U

Indoor Unit Control Panel

From Outdoor Unit

CLOCK FREQUENCY 36,864kHz

Remote Control

Operation

Display

Timer

Display

ECONO.

Sign Display

PRE DEF.

Sign Display

Indoor

Fan Motor

Louver ON/OFF Signal

Louver Driver Louver

Motor

Power Supply

Circuit

Temperature Sensor • Louver Control

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

Serial Signal Transmitter/Receiver

Transformer Serial Signal Communication (outdoor unit)

Photo Triac

Noise Filter

6. CONTROL BLOCK DIAGRAM

6-1. Indoor Unit

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