Toshiba RAS-18UKHP-ES4, RAS-18UKP-ES4, RAS-24UKHP-ES4, RAS-24UKP-ES4 SERVICE MANUAL

FILE NO. SVM-05011

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

RAS-24UKHP-ES4 / RAS-24UAH-ES4

RAS-18UKHP-ES4 / RAS-24UKP-ES4

RAS-18UKP-ES4

RAS-18UAH-ES4

/RAS-24UA-ES4

/RAS-18UA-ES4

	18 Class			18 Class		24 Class
(Heat pump model)			(Cooling only model)
							May 2005

FILE NO. SVM-05011

CONTENTS

1.SPECIFICATIONS

2.CONSTRUCTION VIEWS

2-1 Indoor Unit

2-2 Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) 2-3 Outdoor Unit (RAS-18UAH-ES4)

2-4 Outdoor Unit (RAS-18UA-ES4)

3.WIRING DIAGRAM

3-1 RAS-24UKHP-ES4 / RAS-24UAH-ES4 3-2 RAS-18UKHP-ES4 / RAS-18UAH-ES4 3-3 RAS-24UKP-ES4 / RAS-24UA-ES4 3-4 RAS-18UKP-ES4 / RAS-18UA-ES4

4.SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-24UKHP-ES4, RAS-18UKHP-ES4) 4-2 Outdoor Unit (RAS-24UAH-ES4)

4-3 Outdoor Unit (RAS-18UAH-ES4)

4-4 Indoor Unit (RAS-24UKP-ES4, RAS-18UKP-ES4) 4-5 Outdoor Unit (RAS-24UA-ES4)

4-6 Outdoor Unit (RAS-18UA-ES4)

5.REFRIGERATION CYCLE DIAGRAM

5-1 RAS-24UKHP-ES4 / RAS-24UAH-ES4 5-2 RAS-18UKHP-ES4 / RAS-18UAH-ES4 5-3 RAS-24UKP-ES4 / RAS-24UA-ES4 5-4 RAS-18UKP-ES4 / RAS-18UA-ES4

6.CONTROL BLOCK DIAGRAM

6-1 RAS-24UKHP-ES4, RAS-18UKHP-ES4 6-2 RAS-24UKP-ES4, RAS-18UKP-ES4

7.OPERATION DESCRIPTION

7-1 Outline of Air Conditioner Control

7-2 Description of Operation Circuit

7-3 Hi POWER Mode

7-4 High-Temperature Limit Control

7-5 Low-Temperature Limit Control

7-6 Defrost Operation

7-7 Auto Restart Function

7-8 Filter Check Lamp

7-9 Self-Cleaning function

7-10 QUIET Mode

7-11 COMFORT SLEEP mode

- 1 -

FILE NO. SVM-05011

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 Part

9-6 Troubleshooting for Indoor Unit

9-7 Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) 9-8 Troubleshooting for P.C. Board

9-9 Troubleshooting for Remote Control

10.PARTS REPLACEMENT

10-1 Indoor Unit

10-2 Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) 10-3 Outdoor Unit (RAS-18UAH-ES4)

10-4 Outdoor Unit (RAS-18UA-ES4)

11.EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E - Parts Assy)

11-2 Indoor Unit

11-3 Outdoor Unit (RAS-24UAH-ES4) 11-4 Outdoor Unit (RAS-18UAH-ES4) 11-5 Outdoor Unit (RAS-24UA-ES4)

11-6 Outdoor Unit (RAS-18UA-ES4)

∙This air conditioner is charged with HFC (R410A) that doesn't deplete the Ozone layer.

∙This air conditioner requires special installation for the refrigerant R410A.

- 2 -

FILE NO. SVM-05011

1. SPECIFICATIONS

		MODEL		RAS-24UKHP-ES4				RAS-24UKP-ES4		RAS-18UKHP-ES4				RAS-18UKP-ES4
				RAS-24UAH-ES4				RAS-24UA-ES4		RAS-18UAH-ES4				RAS-18UA-ES4
	ITEM			Cooling		Heating		Cooling		Cooling		Heating		Cooling
	Capacity			220V 240V 220V 240V				220V	240V	220V 240V 220V 240V				220V	240V
			kW	6.80	6.85	7.30	7.50	6.80	6.85	5.00	5.05	5.45	5.55	5.30	5.35
			Phase						1
	Power source		V						220 - 240
			Hz						50
	Power consumption		W	2650 2760 2750 2870				2560	2690	1850 1900 1678 1748				1860	1960
	Power factor		%	96	91	95	90	94	89	98	97	94	92	97	96
				220V 240V 220V 240V				220V	240V	220V 240V 220V 240V				220V	240V
	Running current		A	0.3/	0.3/	0.3/	0.3/	0.3/12.1	0.3/12.35	0.2/	0.2/	0.2/	0.2/	0.2/8.5	0.2/8.3
		Indoor/Outdoor		12.2	12.3 12.85 13.00					8.4	8.0	7.9	7.7
	Starting current		A		56				65		35				32
	Moisture removal		lit/h		2.5				2.7		2.0				2.0
	Noise	Indoor (H/M/L)	dB				45/43/41/39/37						42/41/39/37/35
		Outdoor (220-240V)	dB	56-57		57-58		56-57		52-53		53-54		51-52
	Refrigerant	Name of refrigerant							R410A
		Rated amount	kg		1.50				1.6		1.02				1.16

Refrigerant control

Capillary tube

Gas side size

mm

12.7

Connection type

Flare connection

Liquid side size

mm

6.35

Interconnection

Connection type

Flare connection

pipe

Maximum length

m

15*1

(One way)

25*2

20*2

Maximum height

m

10

8

difference

INDOOR UNIT

RAS-24UKHP-ES4

RAS-24UKP-ES4

RAS-18UKHP-ES4

RAS-18UKP-ES4

Height

mm

298

Dimensions

Width

mm

998

Depth

mm

208

Net weight

kg

13

Evaporator type

Finned tube

Indoor fan type

Cross flow fan

High fan

m3/h

900

900

900

750

800

750

Air volume

Medium fan

m3/h

750

800

750

667

708

667

Low fan

m3/h

625

667

625

543

584

543

Fan motor output

W

30

Air filter

Honeycomb woven filter with PP frame

OUTDOOR UNIT

RAS-24UAH-ES4

RAS-24UA-ES4

RAS-18UAH-ES4

RAS-18UA-ES4

Height

mm

690

538

550

Dimensions

Width

mm

880

830

780

Depth

mm

310

300

270

Net weight

kg

59

63

44

39

Condenser type

Finned tube

Outdoor fan type

Propeller fan

Airflow volume

m3/h

3380

3560

3380

3560

3380

3560

1830

2010

1830

2010

2120

2200

Fan motor output

W

65

42

Compressor

Model

5JS315DAG01

5KS225DAA

Output

W

2200

1500

Safety device

IOL, Td Sensor

IOL

IOL, Td Sensor

IOL

Louver type

Automatic louver

Usable outdoor temperature range

°C

15 ~ 43

-10 ~ 24

15 ~ 43

15 ~ 43

-10 ~ 24

15 ~ 43

	Note *1 Chargeless pipe	- 3 -
	*2 Maximum pipe

FILE NO. SVM-05011

Note : 1

· Capacity is based on the following temperature conditions.

		Condition		B8615-1
	Temperature		Cooling	Heating
	Indoor unit inlet air temperature	(DB)	27°C	20°C
		(WB)	19°C	15°C
	Outdoor unit inlet air temperature	(DB)	35°C	7°C
		(WB)	24°C	6°C

Note : 2

· Charge refrigerant according to the table below.

	Refrigerant	RAS-24UKHP-ES4	/ RAS-24UAH-ES4	RAS-18UKHP-ES4	/ RAS-18UAH-ES4
		RAS-24UKP-ES4 / RAS-24UA-ES4		RAS-18UKP-ES4	/ RAS-18UA-ES4
*1	No need to charge	15m or less		15m or less
	extra refrigerant
*2	Need to charge	Over 15m up to 25m (20g/m)		Over 15m up to 20m (20g/m)
	extra refrigerant

- 4 -

FILE NO. SVM-05011

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

Back body
Front panel	998	208
Grille inlet
298
75		75
7		8
51		50
Knock out system		Knock out system

	50
75	56

								160
		Connection pipe (0.39m)			Drain hose (0.54m)		57	18
		(Flare	12.7)		Connection pipe (0.49m)		Wireless remote control
					(Flare	6.35)
	distance			998
more				763.5		(For stud bolt		6)
				450
55 or	Minimum to ceiling		20	20
			48	10		29
Outline of indoor unit						41	48
298						55 55 55
		65		Installation
			100		100	6540
				Plate outline

– 5 –

FILE NO. SVM-05011

2-2. Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4)

dimensionInstallation 600 600 or more	inletAir	12X18 8 10 bolt		310
		outletAir	anchor
		4 - for
		600or more
100 or more		100 or more		23
	340

	6852
outlet	140
25 Drain
120	600

A

8.63

340

Electric Parts cover	Liquid side (Flare 6.35) Gas side (Flare 1 2.7)	Service Port	12
		340 (pitch)		364
			12
	Handle	88	74
			880
	690			Handle

Detail Drawing	600 50
A

27

hole12x18

340

– 6 –

	A Detail Drawing			A	120
	50	600
	35	R10
		23	325	52
	11x14 hole	6 hole

	Handle
	420
7 –	538
–
	300

Fan guard

25 Drain outlet

90	600
	830

Installation dimension

100 or more		600
		Air inlet
			600 or more
	Air inlet
325
		600 or
100 or more			4x	11x14
	Air	more
			for	8- 10
	outlet		anchor bolt

8- 6 holes

(for fixing outdoor unit)

6- 11x14 holes

or 8 — 10 anchor bolt)

					Electric
					Parts cover
				Service Port	Liquid side
					(Flare	6.35)
			54		Gas side
					(Flare	12.7)
			91
90	50	60			344

ES4)-18UAH-(RAS Unit Outdoor .3-2

05011-SVM .NO FILE

FILE NO. SVM-05011

2-4. Outdoor Unit (RAS-18UA-ES4)

				A
A Detail Drawing (Back Leg)				32.5	115	125
			600
		52
6 Hole		36	R15
			310	302
310	302		R5.5

30 Drain outlet

2- 11x14 Hole

(For 8- 10 anchor bolt)

436

FAN GUARD

530

265

	B Detail Drawing (Front Leg)
102	310 302

	6	Hole	36
	11x14	Hole		R15
			52

B

COVER PV

Z

270	600	90
	780	62

120

75

	Z View
Installation dimension
100 or more	600
	Air inlet
325	600 or more
100 or more	Air outlet 600 or more

310

330

Electrical part cover

Liquid side (Flare 6.35)

Gas side (Flare 12.7)

5 4

Service port

4x 11 Long holes (For 8- 10 anchor bolt)

− 8 −

FILE NO. SVM-05011

3. WIRING DIAGRAM

3-1. RAS-24UKHP-ES4 / RAS-24UAH-ES4

OUTDOOR TERMINAL BLOCK

C

R S

COLOR IDENTIFICATION

BRW : BROWN

RED : RED

WHI : WHITE

Louver

YEL : YELLOW

motor

Infrared rays receive

BLU : BLUE

BLK : BLACK

and Indication parts

1

2

3

4

5

6

7

8

9 10

GRY : GRAY

CN25

1

2

3

4

5

6

7

8

9 10

ORN : ORANGE

BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI

GRN : GREEN

BLU PNK YEL ORN RED BRW

GRN&YEL : GREEN & YELLOW

6

5

4

3

2

1

1

2

3

4

5

6

7 8

9 10

CN07

CN13

6 5 4 3 2 1

1 2 3 4 5 6 7 8 9 10

BLK

P04

DSA

Varistor

F01

6.3A

250V

+12 VDC

+5 VDC

MAIN P.C. BOARD

CN30

(WP-003)

CN31

WP-003

CN23

Serial Signal

YEL GRY BRW

circuit

1

2

3

4

5

6

1

2

3

4

5

6

TEMP FUSE

145 C

INDOOR

1

2

3

INDOOR

TERMINAL

UNIT

MAIN P.C. BOARD (MCC-890)

BLOCK

TRANSFORMER

OUTDOOR

BLK 1

1

DISCHARGE

POWER SUPPLY

UNIT

BLK

2

CN06

220-240 V~ 50 Hz

3 3

PIPE

SENSOR (TD)

RED

1

1

CN05

1

1

BLU

RED 3 3

CN07 2

L

N

i

1

2

3

SG01

TNR

3

3

BLU

FERRITE CORE

GRN&YEL

BLK

R74

1 1

BLK

BLK

F01

RED

3 3

GRN&YEL

250VAC T6. 3A

TNR

1 1

BLK

WHI

5 5

CN08

R73

2

i

RED 7 7

CN01

3

3

BLK

CHASSIS

GRY

HEAT

BLK

RED

9 9

EXCHANGER

SENSOR (TE)

MAGNETIC

RY07

CONTACTOR

BLU 1 1

CN11

R

S

T

3 3

A1

YEL

CR11

RY05

(1/L1)

(3/L2)

(5/L3)

(2/T1)

(4/T2)

(6/T3)

52C

BLU 1 1

A2

CN02

U

V

W

BLU

3 3

CR12

COIL FOR

4 WAY VALVE

CR13

RY06

CAPACITOR

CAPACITOR

RED

RED

CN03

1

3

WHI

S

WHI

1

C BLK

BLK

BLK

PNK

RED

R

COMPRESSOR TERMINAL

COMPRESSOR

FAN MOTOR

– 9 −

FILE NO. SVM-05011

3-2. RAS-18UKHP-ES4 / RAS-18UAH-ES4

OUTDOOR TERMINAL BLOCK

C

R S

	COLOR IDENTIFICATION
	BRW : BROWN
	RED : RED
	WHI : WHITE		Louver
	YEL : YELLOW		motor										Infrared rays receive
	BLU : BLUE
	BLK : BLACK													and Indication parts
													1	2	3	4	5	6	7	8	9 10
	GRY : GRAY																					CN25
													1	2	3	4	5	6	7	8	9 10
	ORN : ORANGE												BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI
	GRN : GREEN			BLU PNK YEL ORN RED BRW
	GRN&YEL : GREEN & YELLOW
				6	5	4	3	2	1				1	2	3	4	5	6	7 8		9 10
										CN07												CN13
				6 5 4 3 2 1									1 2 3 4 5 6 7 8 9 10
BLK	P04
	DSA	Varistor
		F01
		6.3A	250V																			+12 VDC
																						+5 VDC
			MAIN P.C. BOARD
	CN30		(WP-003)
	CN31
																						WP-003
	CN23	Serial Signal						YEL	GRY BRW
		circuit
											1	2	3	4	5	6
											1	2	3	4	5	6
										TEMP FUSE	145 C

INDOOR	1	2	3	INDOOR
TERMINAL
				UNIT		MAIN P.C. BOARD (MCC-890)
BLOCK					TRANSFORMER

OUTDOOR

BLK 1 1

DISCHARGE

POWER SUPPLY

UNIT

2

CN06

220-240 V~ 50 Hz

BLK 3 3

PIPE

SENSOR (TD)

RED 1 1

CN05

1

1

BLU

RED 3 3

CN07 2

L

N

i

1

2

3

GRN&YEL

SG01

TNR

3 3

BLU

FERRITE CORE

BLK 1 1

R74

BLK

BLK 3 3

F01

RED

GRN&YEL

250VAC T6. 3A

TNR

1

1

BLK

WHI 5 5

CN08

R73

2

i

RED 7 7

CN01

3 3

BLK

CHASSIS

GRY 9 9

HEAT

BLK

RED

EXCHANGER

SENSOR (TE)

MAGNETIC

RY07

CONTACTOR

BLU 1 1

CN11

R

S

T

YEL 3 3

A1

CR11

RY05

52C

BLU 1 1

U

V

W

A2

CN02

BLU 3 3

CR12

COIL FOR

4 WAY VALVE

CR13

RY06

CAPACITOR

CAPACITOR

RED

RED

CN03

1

3

WHI

S

WHI

1

PNK

C BLK

RED

BLK

BLK

R

COMPRESSOR TERMINAL

COMPRESSOR

FAN MOTOR

– 10 −

FILE NO. SVM-05011

3-3. RAS-24UKP-ES4 / RAS-24UA-ES4

COLOR IDENTIFICATION
BRW : BROWN
RED : RED	Louver
WHI : WHITE
YEL : YELLOW	motor							Infrared rays receive
BLU : BLUE								and Indication parts
BLK : BLACK								1	2	3	4	5	6	7	8	9 10	CN25
GRY : GRAY								1	2	3	4	5	6	7	8	9 10
ORN : ORANGE								BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI
GRN : GREEN	BLU PNK YEL ORN RED BRW
GRN&YEL : GREEN & YELLOW
	6	5	4	3	2	1	CN07	1	2	3	4	5	6	7	8	9 10	CN13
	6 5 4 3 2 1							1	2	3	4	5	6	7	8	9 10

BLK P04

	DSA	Varistor
		F01

						250V		Varistor
				6.3A

CN30

CN31

CN27

MAIN P.C. BOARD (WP-003)

GRN&YEL

		INDOOR	1	2	3
		TERMINAL					INDOOR
		BLOCK					UNIT
POWER SUPPLY
220 − 240 V ~ 50 Hz							OUTDOOR
							UNIT
OUTDOOR	L	N	1	2	3
TERMINAL
BLOCK	BLK			GRN&YEL
	BLK	RED
					CHASSIS
		RED
		BLK	BLK		GRY
		SPARK KILLER
		A2 52C A1				RED
		RED					CAPACITOR		WHI	BLK
		1/L1	2/T1	RED					RED
					CAPACITOR	WHI	S		FAN MOTOR
						PNK	C	BLK
		3/L2	4/T2							C
							R
									R	S
							COMPRESSOR
		5/L3	6/T3						COMPRESSOR TERMINAL

Power supply circuit

Control Fan motor circuit

BRW

GRY

YEL

	1	2	3	4	5	6
	1	2	3	4	5	6
TEMP FUSE	145 C

1	2	CN03		1	2	CN01
1	2			1	2
BLK BLK			BLK BLK
Thermo.				Heat exchanger
sensor				sensor
(TA)				(TC)

MAGNETIC CONTACTOR

− 11 −

FILE NO. SVM-05011

3-4. RAS-18UKP-ES4 / RAS-18UA-ES4

COLOR IDENTIFICATION
BRW : BROWN
RED : RED	Louver
WHI : WHITE
YEL : YELLOW	motor							Infrared rays receive
BLU : BLUE								and Indication parts
BLK : BLACK								1	2	3	4	5	6	7	8	9 10	CN25
GRY : GRAY								1	2	3	4	5	6	7	8	9 10
ORN : ORANGE								BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI
GRN : GREEN	BLU PNK YEL ORN RED BRW
GRN&YEL : GREEN & YELLOW
	6	5	4	3	2	1	CN07	1	2	3	4	5	6	7	8	9 10	CN13
	6 5 4 3 2 1							1	2	3	4	5	6	7	8	9 10

BLK P04

	DSA	Varistor
		F01

						250V		Varistor
				6.3A

CN30

CN31

CN27

MAIN P.C. BOARD (WP-003)

GRN&YEL

		INDOOR		1		2	3	INDOOR
		TERMINAL
								UNIT
		BLOCK
	POWER SUPPLY							OUTDOOR
	220 − 240 V ~ 50 Hz
								UNIT
OUTDOOR	L	N		1		2	3
TERMINAL								GRN&YEL
BLOCK						BLK
		BLK
		RED				BLK
			GRN&YEL
BLK		RED			RED		CHASSIS
						SPARK KILLER
								GRY
		R	S		T	A1	(or A)

Power supply circuit

Control Fan motor circuit

BRW

GRY

YEL

	1	2	3	4	5	6
	1	2	3	4	5	6
TEMP FUSE	145 C

1	2	CN03		1	2	CN01
1	2			1	2
BLK BLK			BLK BLK
Thermo.				Heat exchanger
sensor				sensor
(TA)				(TC)

MAGNETIC
CONTACTOR					A2 (or B)
			U	V
					W
CAPACITOR					CAPACITOR
RED					RED
WHI	S	C			WHI	BLK
			BLK		RED
PNK
	R
COMPRESSOR					FAN MOTOR
		C
		R	S

COMPRESSOR TERMINAL

− 12 −

FILE NO. SVM-05011

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (RAS-24UKHP-ES4, RAS-18UKHP-ES4)

No.	Parts name	Type		Specifications
1	Fan motor (for indoor)	AFS-220-31A	AC 200 − 240V, 31W
2	Thermo sensor (TA-sensor)	———	10 k	Ω at 25° C
3	Micro Power Module (M01)	μRM1260V	DC 390 V, Secondary DC 12 V
4	Microcontroller	TMP87CM40AN
5	Heat exchanger sensor	———	10 k	Ω at 25° C
	(TC-sensor)
6	Line filter (L01)	LC*SS11V-06270	27mH, 600mA
7	Diode (DB01)	D3SBA60	4 A, 600 V
8	Capacitor (C63)	KMH400VSSN47M22S	4.7µF, 400 V
9	Fuse (F01)	BET6.3A	T6.3 A, 250 V
10	Varistor (R21, R22)	15G561K	560 V
11	Resistor (R319)	RF-2TK5R6	5.6Ω , 2 W
12	Louver motor	MP35EA12	Output (Rated) 2 W, 10 poles, 1 phase,
			DC 12 V

4-2. Outdoor Unit (RAS-24UAH-ES4)

No.	Parts name	Type			Specifications
				Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz
1	Compressor	5JS315DAG01		Winding resistance (Ω)			Red-Black	White-Black
				(at 20°C)
							0.830	2.257
				Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz
2	Fan motor (for outdoor)	KFG6-71SB5P-T1
				Winding resistance (Ω	)		Red-Black	White-Black
				(at 20°C)
							64.4	127.4
3	Running capacitor	451355L		AC 450V, 3.5µF
	(for fan motor)
4	Running capacitor	BUM44X4505B		AC 440V, 45µF
	(for compressor)
5	Solenoid coil	VHV (STF)		AC 220 ~ 240V
	(for 4-way valve)
6	Thermo sensor	TE / TD		10kΩ at 25°C / 50kΩ	at 25°C
7	Magnetic contactor	A35		220 ~ 240V, 50Hz
8	Transformer	TT-05		220 ~ 240V
9	Microcontroller	TMP47C840N
10	Varistor (R73, R74)	15G471K		470V
11	Fuse (F01)	TSCR		T6.3A, 250V

– 13 –

FILE NO. SVM-05011

4-3. Outdoor Unit (RAS-18UAH-ES4)

No.	Parts name	Type	Specifications
			Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz
1	Compressor	5KS225DAA	Winding resistance (Ω)		Red-Black	White-Black
			(at 20°C)
					1.632	2.457
			Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz
2	Fan motor (for outdoor)	WLF-240-42A-2	Winding resistance (Ω)		Red-Black	White-Black
			(at 20°C)
					188	289
3	Running capacitor	451155L	AC 450V, 1.5µF
	(for fan motor)
4	Running capacitor	BUM44X4505B	AC 440V, 45µF
	(for compressor)
5	Solenoid coil	VHV (STF)	AC 220 − 240V
	(for 4-way valve)
6	Thermo sensor	TE / TD	10kΩ at 25°C / 50kΩ at 25°C
7	Magnetic contactor	CLK-26J	220 − 240V, 50Hz
8	Transformer	TT-05	220 − 240V
9	Microcomputer	TMP47C840N
10	Varistor (R73, R74)	15G471K	470V
11	Fuse (F01)	TSCR	T6.3A, 250V

4-4. Indoor Unit (RAS-24UKP-ES4, RAS-18UKP-ES4)

No.	Parts name	Type	Specifications
1	Fan motor (for indoor)	AFS-220-31A	AC 200 − 240V, 31W
2	Thermo sensor (TA-sensor)	———	10 kΩ at 25° C
3	Micro Power Module (M01)	μRM1260V	DC 390 V, Secondary DC 12 V
4	Microcontroller	TMP87CM40AN
5	Heat exchanger sensor	———	10 kΩ at 25° C
	(TC-sensor)
6	Line filter (L01)	LC*SS11V-06270	27mH, 600mA
7	Diode (DB01)	D3SBA60	4 A, 600 V
8	Capacitor (C63)	KMH400VSSN47M22S	4.7µF, 400 V
9	Fuse (F01)	BET6.3A	T6.3 A, 250 V
10	Varistor (R21, R22)	15G561K	560 V
11	Resistor (R319)	RF-2TK5R6	5.6Ω , 2 W
12	Louver motor	MP35EA12	Output (Rated) 2 W, 10 poles, 1 phase,
			DC 12 V
13	Relay : (RY04)	G5NB-1A	Coil DC 12V, 16.7mA, Contact AC 250V, 1A

– 14 –

FILE NO. SVM-05011

4-5. Outdoor Unit (RAS-24UA-ES4)

No.	Parts name	Type	Specifications
			Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz
1	Compressor	5JS315DAG01	Winding resistance (Ω)	Red-Black	White-Black
			(at 20°C)	0.830	2.257
			Output (Rated) 65W, 6poles, 1 phase, 220 −		240V, 50Hz
2	Fan motor (for outdoor)	KFG6-71SB5P-T	Winding resistance (Ω)	Red-Black	White-Black
			(at 20° C)	64.4	127.4
3	Running capacitor	451355L	AC 450V, 3.5μF
	(for fan motor)
4	Running capacitor	BUM44X4505B	AC 440V, 45μF
	(for compressor)
5	Magnetic contactor	A35	220 − 240V, 50Hz

4-6. Outdoor Unit (RAS-18UA-ES4)

No.	Parts name	Type	Specifications
			Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz
1	Compressor	5KS225DAA	Winding resistance (Ω)	Red-Black	White-Black
			(at 20°C )
				1. 632	2.457
			Output (Rated) 42W, 6poles, 1 phase, 220 − 240V, 50Hz
2	Fan motor (for outdoor)	WLF-240-42A-1	Winding resistance (Ω)	Red-Black	White-Black
			(at 20°C)
				188	289
3	Running capacitor	451155L	AC 450V, 1.5µF
	(for fan motor)
4	Running capacitor	BUM44X4505B	AC 440V, 45μF
	(for compressor)
5	Magnetic contactor	CLK-26J	220 − 240V, 50Hz

– 15 –

FILE NO. SVM-05011

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-24UKHP-ES4 / RAS-24UAH-ES4

		Cooling
	0.39m		Heating
	(Connecting pipe)
	12.7

T1

Indoor unit

Heat exchanger

Cross flow fan

0.49m (Connecting pipe)6.35

O.D.:12.7mm	P			O.D.:6.35mm
	Packed valve			Packed valve
	( 12.7)			( 6.35)
	Gas container connection (Reinstall etc.)
	Heating
Cooling	4-way valve
Heating	Cooling Compressor	5JS315DAG01
Tank				Capillary tube
				2.0x800s
		Condenser
				Refrigerant
		Propeller fan		R410A 1.5 kg
	Cooling	Outdoor unit	Mark(	)means check points of Gas Leak.
	Heating

		Standard	Surface temp. of heat		Ambient temp.
				Fan speed	conditions DB/WB
	50Hz	pressure P	exchanger interchanging	(indoor)		(°C)
		(MPaG)	pipe T1 (°C)
					Indoor		Outdoor
	Standard	3.1	50.9	High	20/–		7/6
Heating
	Overload*1	3.8 ~ 4.0	57.0 ~ 59.0	Low	27/–		24/18
	Low temperature	2.6	35.0	High	20/–		–10/–10
	Standard	0.8	7.2	High	27/19		35/24
Cooling
	Overload	1.3	12.0	High	32/23		43/26
	Low temperature	0.6	1.0	Low	21/15		21/15

Note :

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

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

– 16 –

FILE NO. SVM-05011

5-2. RAS-18UKHP-ES4 / RAS-18UAH-ES4

		Cooling
	0.39m		Heating
	(Connecting pipe)
	12.7

T1

Indoor unit

Evaporator

Cross flow fan

0.49m (Connecting pipe)6.35

O.D.:12.7mm	P			O.D.:6.35mm
	Packed valve			Packed valve
	( 12.7)			( 6.35)
	Heating
Cooling	4-way valve
Heating	Cooling Compressor	5KS225DAA
				Capillary tube
				2.0x1200s
	Accumulator
		Condenser
				Refrigerant
		Propeller fan		R410A 1.02 kg
	Cooling	Outdoor unit	Mark(	)means check points of Gas Leak.
	Heating

		Standard	Surface temp. of heat		Ambient temp.
	50Hz			Fan speed	conditions DB/WB
		pressure P	exchanger interchanging	(indoor)		(°C)
		(MPaG)	pipe T1 (°C)
					Indoor		Outdoor
	Standard	2.6	44.7	High	20/–		7/6
Heating
	Overload*1	3.0 ~ 3.6	49.0 ~ 56.0	Low	27/–		24/18
	Low temperature	2.0	32.0	High	20/–		–10/–10
	Standard	0.9	9.5	High	27/19		35/24
Cooling
	Overload	1.1	12.6	High	32/23		43/26
	Low temperature	0.7	2.4	Low	21/15		21/15

Note :

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

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

– 17 –

FILE NO. SVM-05011

5-3. RAS-24UKP-ES4 / RAS-24UA-ES4

		T1
		Indoor unit
	Cooling	Heat exchanger
0.39m
(Connecting pipe)
	12.7	Cross flow fan

0.49m (Connecting pipe)6.35

O.D.:12.7mm	P	O.D.:6.35mm
	Packed valve	Packed valve
	( 12.7)	( 6.35)
	Gas container connection (Reinstall etc.)

Cooling

Accumulator

Compressor 5JS315DAG01	Capillary tube
	2.0x700s

Condenser

				Refrigerant
	Propeller fan			R410A 1.6kg
Cooling	Outdoor unit	Mark(		)means check points of Gas Leak.

		Standard	Surface temp. of heat		Ambient temp.
				Fan speed	conditions DB/WB
	50Hz	pressure P	exchanger interchanging	(indoor)		(°C)
		(MPaG)	pipe T1 (°C)
					Indoor		Outdoor
	Standard	0.6	6.0	High	27/19		35/24
Cooling
	Overload	1.10	10.0	High	32/23		43/26
	Low temperature	0.5	2.0	Low	21/15		21/15

Note :

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

– 18 –

FILE NO. SVM-05011

5-4. RAS-18UKP-ES4 / RAS-18UA-ES4

		T1
		Indoor unit
	Cooling	Evaporator
0.39m
(Connecting pipe)
	12.7	Cross flow fan

0.49m (Connecting pipe)6.35

O.D.:12.7mm	P	O.D.:6.35mm
	Packed valve	Packed valve
	( 12.7)	( 6.35)

Cooling

Compressor	5KS225DAA		Capillary tube
			1.7x600s
	Condenser
			Refrigerant
	Propeller fan		R410A 1.16 kg
Cooling	Outdoor unit	Mark(	)means check points of Gas Leak.

		Standard	Surface temp. of heat		Ambient temp.
	50Hz			Fan speed	conditions DB/WB
		pressure P	exchanger interchanging	(indoor)		(°C)
		(MPaG)	pipe T1 (°C)
					Indoor		Outdoor
	Standard	1.1	10.0	High	27/19		35/24
Cooling
	Overload	1.2	13.0	High	32/23		43/26
	Low temperature	0.6	2.0	Low	21/15		21/15

Note :

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

– 19 –

FILE NO. SVM-05011

6. CONTROL BLOCK DIAGRAM

6-1. RAS-24UKHP-ES4, RAS-18UKHP-ES4

Heat Exchanger Sensor

Temperature Sensor

Infrared Rays Signal Receiver

Initiallizing Circuit

Infrared

Rays

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Remote

Control

Noise Filter

From Outdoor Unit

220 ~ 240 V AC 50 Hz

REMOTE CONTROL

Indoor Unit Control Panel

M.C.U.

Functions

•Louver Control

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

Louver ON/OFF Signal

Louver Driver

Serial Signal Transmitter/Receiver

Serial Signal Communication

Infrared Rays

Remote Control

Operation ()

Operation Mode Selection

Operation

Display

Timer

Display

Filter Sign

Display

PRE DEF.

Sign Display

Hi Power

Sign Display

Indoor

Fan Motor

Louver Motor

AUTO, COOL, DRY, HEAT, 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

– 20 –

FILE NO. SVM-05011

6-2. RAS-24UKP-ES4, RAS-18UKP-ES4

Indoor Unit Control Panel

M.C.U.

Functions

Operation

Heat Exchanger Sensor

Louver Control

Display

Timer

Temperature Sensor

3-minute Delay at Restart for Compressor

Display

Filter Sign

Infrared Rays Signal Receiver

Motor Revolution Control

Display

Fan Only

Initiallizing Circuit

Processing

Infrared

Sign Display

(Temperature Processing)

Rays

Clock Frequency

Timer

Hi Power

Oscillator Circuit

Sign Display

Indoor

Fan Motor

Power Supply

Remote

Circuit

Outdoor unit

Louver ON/OFF Signal

ON/OFF Signal

Control

Noise Filter

Relay Driver

Louver Driver

Louver Motor

Relay RY04

From Outdoor Unit

220 ~ 240V AC 50Hz

Outdoor Unit

REMOTE CONTROL

Infrared Rays

Remote Control

Operation ()

Operation Mode Selection

AUTO, COOL, DRY, HEAT, 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

− 21 −

– 22–

Operations according to the commands from the indoor unit

FILE NO. SVM-05011

7. OPERATION DESCRIPTION

7-1. Outline of Air Conditioner Control

(2)

This is a fixed capacity type air conditioner, which uses a AC motor for an indoor fan. The AC 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

Table 7-1-1

Role of outdoor 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 motorf

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

·Defrost control in heating operation (Temperature measurement by the outdoor heat exchanger and control for the four-way valve and the outdoor fan motor) *Heat pump Model only

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 [FIX] button.

The louver position which is set by [FIX] 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 [FIX] button is pressed, it stops

swinging.

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

(1)The indoor fan is operated by the stepless speed change AC 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 fan motor speed is automatically controlled by the

difference between the preset temperature and the room temperature.

															FAN TAP
	OPERATION				Cooling						UH	H	M+		M			L+	L	L-	UL	SUL/SL-
	MODE				Heat		UH		H					M	L+	L		L-		UL				SUL/SL-
					Fan Only							H	M+		M			L+	L	L-
					Dry								M+		M			L+	L	L-	UL		SUL
			RAS-24UKHP Series		rpm					1300			1250	1200	1150	1050			1000	900	800	700		600
					Air Flow volume(m3/h)					900			830	790	750		667		625	543	461	380		300
	Model		RAS-18UKH Series		rpm		1200				1150		1100		1050		950		900	800	700	600		500
					Air Flow volume(m3/h)			790			750		708		667		584		543	461	380	300		220
			RAS-24UKP Series		rpm			−			1300		1250	−	1150	−		1050	1000	900	800	700		−
					Air Flow volume(m3/h)			−			900		830	−	750	−		667	625	543	461	380		−
			RAS-18UKP Series		rpm			−			1150		1100	−	1050	−		950	900	800	700	600		−
					Air Flow volume(m3/h)			−			750		708	−	667	−		584	543	461	380	300		−
Note : Under some function of setting. The fan motor is controlled automatically.
			Then	LOW+ = LOW + MED		and			MED+ = MED + HIGH
					2								2

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] button 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.

temp.)	+3
(Preset				M+
	+2.5
				*1
-	+2
temp.)	+1.5			*1
				*1
(Room	+1
	+0.5
Preset		0
temp.
			(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-.

(2)The Hi Power, ECO and COMFORT SLEEP operation cannot be set.

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

FILE NO. SVM-05011

7-2-2. Cooling operation

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

(1)The compressor, 4-way valve, outdoor fan and operation display lamp are controlled as shown in Fig. 7-2-2.

	0.5		ON		ON
			OFF	OFF	OFF	ON
Preset		0
temp.			Compressor	way-4valve pump(Heatmodel)	Outdoorfan	OPERATION
						displaylamp

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.

	temp.)	+3		M+
	(Preset	+2.5
				*1
	-	+2		*1
	temp.)	+1.5
				*1
	(Room	+1
		+0.5
	Preset		0
	temp.	-0.5

NOTE :

*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]

- 23 -