Toshiba RAS-18UFHP-ES3, RAS-18UFP-ES3 SERVICE MANUAL

FILE NO. SVM-04031-(1)

AIR-CONDITIONER

UNDER CEILING / CONSOLE TYPE

RAS-18UFHP-ES3 / RAS-18UAH-ES3 RAS-18UFP-ES3 / RAS-18UA-ES3 RAS-24UFHP-ES3 / RAS-24UAH-ES3 RAS-24UFP-ES3 / RAS-24UA-ES3

18 Class

24 Class

June 2004

FILE NO. SVM-04031-(1)

CONTENTS

1.SPECIFICATIONS

2.CONSTRUCTION VIEWS

2-1 Indoor Unit

2-2 Outdoor Unit (RAS-18UAH-ES3) 2-3 Outdoor Unit (RAS-18UA-ES3)

2-4 Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3)

3.WIRING DIAGRAM

3-1 RAS-18UFHP-ES3 / RAS-18UAH-ES3 3-2 RAS-18UFP-ES3 / RAS-18UA-ES3 3-3 RAS-24UFHP-ES3 / RAS-24UAH-ES3 3-4 RAS-24UFP-ES3 / RAS-24UA-ES3

4.SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit

4-2 Outdoor Unit (RAS-18UAH-ES3) 4-3 Outdoor Unit (RAS-18UA-ES3) 4-4 Outdoor Unit (RAS-24UAH-ES3) 4-5 Outdoor Unit (RAS-24UA-ES3)

5.REFRIGERATION CYCLE DIAGRAM

5-1 RAS-18UFHP-ES3 / RAS-18UAH-ES3 5-2 RAS-18UFP-ES3 / RAS-18UA-ES3 5-3 RAS-24UFHP-ES3 / RAS-24UAH-ES3 5-4 RAS-24UFP-ES3 / RAS-24UA-ES3

6.CONTROL BLOCK DIAGRAM

6-1 RAS-18UFHP-ES3, RAS-24UFHP-ES3 6-2 RAS-18UFP-ES3, RAS-24UFP-ES3

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 Defrosting Operation

7-7 Auto Restart Function

7-8 Filter Check Lamp

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 How to Use Drain Pump Kit of Option

8-8 Others

– 1 –

FILE NO. SVM-04031

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 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-18UAH-ES3, RAS-18UA-ES3) 10-3 Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3)

11.EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E-Parts Assy)

11-2	Indoor Unit
11-3 Outdoor Unit (RAS-18UAH-ES3)
11-4	Outdoor Unit (RAS-18UA-ES3)
11-5	Outdoor Unit (RAS-24UAH-ES3)
11-6	Outdoor Unit (RAS-24UA-ES3)

•This air conditioner is charged with HFC (R-410A) that does not deplete the Ozone layer.

•This air conditioner requires special service tools

for the refrigerant R-410A.

– 2 –

FILE NO. SVM-04031

1. SPECIFICATIONS

		MODEL			RAS-18UFHP-ES3			RAS-18UFP-ES3			RAS-24UFHP-ES3			RAS-24UFP-ES3
					RAS-18UAH-ES3			RAS-18UA-ES3			RAS-24UAH-ES3			RAS-24UA-ES3
	ITEM			Cooling		Heating		Cooling		Cooling		Heating		Cooling
	Capacity			220V	240V	220V	240V	220V	240V	220V	240V	220V	240V	220V	240V
			kW	5.00	5.10	5.70	5.75	5.30	5.35	6.20	6.30	7.00	7.10	6.80	6.85
		Phase							1
	Power source		V						220 − 240
			Hz						50
	Power consumption		W	1960	2010	1830	1880	1950	2040	2515	2570	2430	2530	2640	2790
	Power factor		%	98	96	98	96	97	92	96	92	96	91	95	91
	Running current	Indoor	A			0.4						0.45
		Outdoor	A	8.60	8.30	7.70	7.60	8.60	8.80	11.35	11.20	11.10	11.15	12.15	12.35
	Starting current		A			47			33			54
	Moisture removal		lit/h			2.0					2.5			2.7
	Noise	Indoor (H/M/L)	db			43/39/36						46/42/37
		Outdoor	db	51	52	52	53	51	52	56	57	57	58	56	57
	Refrigerant	Name of refrigerant							R-410A
		Rated amount	kg			1.3			1.14			1.6
	Refrigerant control								Capillary tube
		Gas side size	mm						12.70
		Connection type							Flare connection
		Liquid side size	mm						6.35
	Interconnection	Connection type							Flare connection
	pipe	Maximum length	m						15*1
		(One way)				20*2						25*2
		Maximum height	m			8						10
		difference
	INDOOR UNIT				RAS-18UFHP-ES3			RAS-18UFP-ES3		RAS-24UFHP-ES3				RAS-24UFP-ES3
		Width	mm						1093
	Dimensions	Height	mm						633
		Depth	mm						208
	Net weight		kg						23
	Evaporator type								Finned tube
	Indoor fan type								Multi blade fan
		High fan	m3/h	800		830		800		900		930		900
	Air volume	Medium fan	m3/h	680		700		680		750		760		750
		Low fan	m3/h	580		650		580		550		660		650
	Fan motor output		W						50
	Air filter								Washable -filter
	OUTDOOR UNIT				RAS-18UAH-ES3			RAS-18UA-ES3			RAS-24UAH-ES3			RAS-24UA-ES3
		Width	mm			830						880
	Dimensions	Height	mm			538						690
		Depth	mm			300						310
	Net weight		kg			50			41			67			63
	Condenser type								Finned tube
	Outdoor fan type								Propeller fan
	Airflow volume		m3/h	2105	2310	2150	2310	1830	2010	3380	3560	3380	3560	3380	3560
	Fan motor output		W			42						65
	Compressor	Model			PA225X3F-4L			5KS225DAA			PA290X3F-4MS			5JS315DAG01
		Output	W			1500						2200
	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
						– 3 –

FILE NO. SVM-04031

Note : 1

• Capacity is based on the following temperature conditions.

Condition		JIS C9612-1994
Temperature	Cooling	Heating
(DB)	27°C	20°C
Indoor unit inlet air temperature
(WB)	19°C	12°C
(DB)	35°C	7°C
Outdoor unit inlet air temperature
(WB)	24°C	6°C

Note : 2

• Charge refrigerant according to the table below.

	Refrigerant	RAS-18UFHP-ES3 / RAS-18UAH-ES3	RAS-24UFHP-ES3 / RAS-24UAH-ES3
		RAS-18UFP-ES3 / RAS-18UA-ES3	RAS-24UFP-ES3 / RAS-24UA-ES3
*1	No need to charge	15m or less	15m or less
	refrigerant
*2	Need to charge	Over 15m up to 20m (20g/m)	Over 15m up to 25m (30g/m)
	refrigerant

– 4 –

FILE NO. SVM-04031

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

Front panel

1093

UNDER CEILING & CONSOLE INSTALLATION

For stud bolt	200 Min	1093
( 8 - 10)		1015
For stud bolt (	6)	742
		450
	20	20

330
165		74

208

633

Knock out system

Grille air inlet

Back Body

Installation plate

Mount plate

		M10 Suspention bolt
	633
	460		160
	70 Min	57	18
		Wireless remote control

Knock out system

– 5 –

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

	Handle
	420
6 –	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

ES3)-18UAH-(RAS Unit Outdoor .2-2

(1)-04031-SVM .NO FILE

– 7 –

A	Detail Drawing
	50	600
		R10
	35
325 301		23
		6 hole

11x14 hole

Handle

538

300

A

120

325

52.5

25Drain outlet	4- 11x14 hole	8- 6 hole
		(for fixing outdoor unit)
	(for Ø8-Ø10 anchor bolt)

Fan guard

420

27 100 130

90			600					90
			780									65.5

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

Electric parts cover

Liquid side (Flare 6.35)

Gas side (Flare 12.7)

Service

Port

344

ES3)-18UA-(RAS Unit Outdoor .3-2

(1)-04031-SVM .NO FILE

FILE NO. SVM-04031-(1)

2-4. Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3)

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

	6852
outlet	140
25 Drain
	600
120

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

– 8 –

FILE NO. SVM-04031-(1)

3. WIRING DIAGRAM

3-1. RAS-18UFHP-ES3 / RAS-18UAH-ES3

ORN

RED

INFRARED RA

YS RECEIVE

AND INDICA TION P AR TS

LOUVER

PNK

YEL

1 2

3 4 5

6 7 8

9 10

MOT OR

CN25

BR W

1 2 3 4 5 6 7 8 9 10

BLU

BLU BLU

BLU BLU BLU BLU

BLU BLU BLU WHI

COLOR IDENTIFICA

TION

6 5

4 3 2

1

1 2

3 4 5

6 7 8

9 10

BR W

:

BROWN

CN07

CN13

6 5

4 3 2

1

1 2

3 4 5

6 7 8

9 10

RED

:

RED

SG01

R09

R507

WHI

:

WHITE

CN100

CN101

SWITCH

BLK

IC04

YEL

:

YELLOW

P04

MAIN PCB

1

1

WHI

1

PCB

BLU

:

BLUE

R22

MCC-865A

GRY

2

2

2

BLK

:

BLACK

F01

FUSE

3

3

GRY

3

GR Y

:

GRA Y

L01

R01

MCC-865B

PNK

:

PINK

T6.3A

250V AC

DB01

ORN

:

ORANGE

GRN&YEL

:

GREEN&

R21

C15

C01

YELLOW

SUPPLYPOWER CIRCUIT

GRN

:

GREEN

C02

PUR

:

PURPLE

CN30

BLK

WHI

CN31

R Y401

R Y501

CR502

RED

DC12V

THERMO

DC5V

SENSOR

CN03

(TA)

R405

BLK

1

1

CR501

IC03

2

2

BLK

CR401

C501

HEAT

CN23

EXCHANGER

SENSOR

GRN&YEL

CN01

BLK

(TC)

J401

1

1

2

2

BLK

R506

2 1

CN402

CN401

1 2 3

CN1 1

1 2

3

5

3

1

CN10

BLK

FOR FLOA

T SWITCH

FOR DRAIN PUMP

1

2

3

5

3

1

WHI 1

1

WHI

(OPTION)

(OPTION)

When you use float

RED

RED

FAN

3

MOTOR

switch you should

3

PUR

cut J401

BLK

6

6

	BR W	3	3	BLU
	GR Y
		2	2
	YEL			GR Y
		1	1

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

OUTDOOR

CN07

RED

3 3

2

TERMINAL

L

N

i

1

2

3

GRN&YEL

SG01

TNR

3

3

BLU

BLOCK

FERRITE CORE

BLK

R74

1 1

BLK

BLK

F01

RED

3 3

GRN&YEL

250VAC T6. 3A

TNR

1 1

BLK

WHI

5 5

R73

CN08 2

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

3 3

A1

YEL

CR11

RY05

52C

BLU 1 1

U

V

W

A2

CN02

3 3

BLU

CR12

COIL FOR

4 WAY VALVE

CR13

RY06

CAPACITOR

CAPACITOR

RED

RED

CN03

1

3

C

WHI

S

WHI

1

C

BLK

BLK

BLK

S

R

PNK

RED

COMPRESSOR TERMINAL

R

FAN MOTOR

COMPRESSOR

−9 −

FILE NO. SVM-04031-(1)

3-2. RAS-24UFHP-ES3 / RAS-24UAH-ES3

COLOR IDENTIFICA TION

BR W	:	BROWN
RED	:	RED
WHI	:	WHITE
YEL	:	YELLOW
BLU	:	BLUE
BLK	:	BLACK
GR Y	:	GRA Y
PNK	:	PINK
ORN	:	ORANGE
GRN&YEL	:	GREEN&
		YELLOW
GRN	:	GREEN
PUR	:	PURPLE

	ORN
	RED								INFRARED RA						YS RECEIVE
									AND INDICA TION P AR TS
LOUVER	PNK
	YEL								1	2	3 4		5		6 7		8	9 10
MOT OR								CN25
	BR W								1	2	3 4		5	6 7			8	9 10
	BLU								BLU BLU		BLU BLU BLU BLU				BLU BLU BLU WHI
	CN07	6 5		4 3 2			1	CN13	1 2		3 4 5				6 7 8			9 10
		6	5	4	3	2	1		1	2	3	4	5		6	7	8	9 10

SG01

R09

R507

BLK

IC04

MAIN PCB

P04

R22

MCC-865A

F01

FUSE

L01

T6.3A

250V AC

R01

R21

C15

C01

BLK

CN30

WHI

CN31

R Y401

R Y501

CR502

RED

R405

CR501

CR401

C501

CN23

GRN&YEL

J401

2 1

CN402

CN401

1 2 3

CN1 1

1 2

3

5

3

1

CN10

FOR FLOA

T SWITCH

FOR DRAIN PUMP

1

2

3

5

3

1

WHI

1

1

(OPTION)

(OPTION)

When you use float

RED

3

3

switch you should

cut J401

BLK

6

6

BR W

3

3

GR Y

2

2

YEL

1

1

DB01
C02	POWER SUPPLY
DC12V		CIRCUIT
DC5V
IC03

	CN100		CN101	SWITCH
	1	1	WHI 1
				PCB
	2	2	GR Y 2
	3	3	GR Y 3

MCC-865B

	THERMO
	SENSOR
CN03	(TA)

1 1 BLK

2 2 BLK

HEAT

EXCHANGER

SENSOR

CN01 (TC)

1 1 BLK 2 2 BLK

R506

BLK
WHI
RED	FAN
PUR	MOTOR
BLU
GR Y

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

OUTDOOR

CN07

RED

3 3

2

TERMINAL

L

N

i

1

2

3

GRN&YEL

SG01

TNR

3

3

BLU

BLOCK

FERRITE CORE

BLK

R74

1 1

BLK

BLK

F01

RED

3 3

GRN&YEL

250VAC T6. 3A

TNR

1 1

BLK

WHI

5 5

R73

CN08 2

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

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

3 3

BLU

CR12

COIL FOR

4 WAY VALVE

CR13

RY06

CAPACITOR

CAPACITOR

RED

RED

CN03

1

3

C

WHI

S

WHI

1

C

BLK

BLK

BLK

S

R

PNK

RED

COMPRESSOR TERMINAL

R

FAN MOTOR

COMPRESSOR

− 10 −

FILE NO. SVM-04031

3-3. RAS-18UFP-ES3 / RAS-18UA-ES3

OR N

R E D

INF R AR E D R AY S R E C E IVE

AND INDIC AT ION PAR T S

LOUVE R

P NK

Y E L

1 2 3 4 5 6 7

8

9 10

MOTOR

C N25

B R W

1 2 3 4 5 6 7 8 9 10

B LU

B LU B LU B LU B LU B LU B LU

B LU B LU B LU WHI

C OLOR IDE NT IF IC AT ION

6

5

4 3

2

1

1

2

3 4

5

6 7

8

9 10

B R W

:

B R OWN

C N07

C N13

6

5

4

3

2

1

1

2

3

4

5

6

7

8

9 10

R E D

:

R E D

S G 01

R 09

R 507

WHI

:

WHIT E

B LK

C N100 C N101

Y E L

:

Y E LLOW

IC 04

MAIN P C B

S WIT C H

B LU

:

B LUE

P 04

R 22

1

1

WHI

1

P C B

MC C -865A

B LK

:

B LAC K

2

2

G R Y 2

3

3 G R Y 3

G R Y

:

G R AY

F 01 F US E

L01

P NK

:

P INK

T 6.3A 250VAC

R 01

DB 01

MC C -865B

OR N

:

OR ANG E

G R N&Y E L

:

G R E E N&

R 21

C 15

C 01

LY

Y E LLOW

G R N

:

G R E E N

P

C 02

S UP

P UR

:

P UR P LE

C N30

B LK

WHI

C N31

C R 02

R Y 401

R Y 501

OWE R IR C UIT

R E D

C R 502

DC 12V

R Y 04

P C

T HE R MO

C N27

DC 5V

S E NS OR

1

1

C N03

(TA)

R 405

1

1

B LK

3

3

C R 501

IC 03

2

2

B LK

C R 401

C 501

HE AT

E XC HANG E R

S E NS OR

G R N&Y E L

C N01

(T C )

J 401

1

1

B LK

2

2

B LK

R 506

2

1

C N402

C N401 1

2 3

C N11

1

2

3

5

3

1 C N10

B LK

F OR F LOAT S WIT C H

F OR DR AIN P UMP

1

2

3

5

3

1

WHI

1

1

WHI

(OP T ION)

(OP T ION)

R E D

R E D

FAN

When you use float

3

3

P UR

MOTOR

switch you should

cut J 401

B LK

6

6

B R W

3

3

B LU

G R Y

2

2

Y E L

G R Y

1

1

INDOOR

1

2

3

INDOOR

TERMINAL

UNIT

BLOCK

POWER SUPPLY

OUTDOOR

220 − 240 V ~ 50 Hz

UNIT

OUTDOOR

L

N

1

2

3

TERMINAL

BLOCK

BLK

GRN&YEL

BLK

RED

BLK

GRN&YEL

BLK

RED

RED

CHASSIS

SPARK KILLER

GRY

		R	S	T	A1	(or A)
MAGNETIC
CONTACTOR					A2	(or B)
		U	V	W
CAPACITOR						CAPACITOR
RED					RED
WHI	S					WHI
	C	BLK				RED	BLK
PNK

R

FAN MOTOR

COMPRESSOR

C

R S

COMPRESSOR TERMINAL

− 11 −

FILE NO. SVM-04031

3-4. RAS-24UFP-ES3 / RAS-24UA-ES3

ORN

RED

INFRARED RA

YS RECEIVE

AND INDICA TION P AR TS

LOUVER

PNK

YEL

1

2

3 4

5

6 7

8

9 10

MOT OR

CN25

BR W

1 2 3 4 5 6 7 8 9 10

BLU

BLU

BLU

BLU BLU BLU BLU

BLU

BLU BLU WHI

COLOR IDENTIFICA

TION

6 5

4 3 2

1

1 2

3 4 5

6 7 8

9 10

BR W

:

BROWN

CN07

CN13

6

5

4

3

2

1

1

2

3

4

5

6

7

8

9 10

RED

:

RED

SG01

R09

R507

WHI

:

WHITE

BLK

IC04

CN100

CN101

SWITCH

YEL

:

YELLOW

MAIN PCB

BLU

:

BLUE

P04

R22

1

1

WHI

1

PCB

MCC-865A

GR Y

BLK

:

BLACK

2

2

2

3

3 GR Y 3

GR Y

:

GRA Y

F01

FUSE

L01

PNK

:

PINK

T6.3A

250V AC

R01

DB01

MCC-865B

ORN

:

ORANGE

GRN&YEL

:

GREEN&

R21

C15

C01

Y

YELLOW

GRN

:

GREEN

C02

POWER SUPPL CIRCUIT

PUR

:

PURPLE

CN30

BLK

WHI

CN31

CR02

R Y401

R Y501

RED

CR502

DC12V

R Y04

THERMO

CN27

DC5V

SENSOR

1

1

CN03

(TA)

R405

1

1

BLK

3 3

CR501

IC03

2

2

BLK

CR401

C501

HEA T

EXCHANGER

SENSOR

GRN&YEL

CN01

(TC)

J401

1

1

BLK

2

2

BLK

R506

2 1

CN402

CN401

1 2 3

CN1 1

1 2

3

5

3

1 CN10

BLK

FOR FLOA

T SWITCH

FOR DRAIN PUMP

1

2

3

5

3

1

WHI

1

1

WHI

(OPTION)

(OPTION)

RED

RED

FA N

When you use float

3

3

PUR

MOT OR

switch you should

cut J401

BLK

6

6

BR W

3

3

BLU

GR Y

2

2

YEL

GR Y

1

1

INDOOR

INDOOR

TERMINAL

1

2

3

BLOCK

UNIT

POWER SUPPLY

OUTDOOR

220 − 240 V ~ 50 Hz

UNIT

OUTDOOR

L

N

1

2

3

TERMINAL

BLOCK

BLK

GRN&YEL

BLK

RED

CHASSIS

RED

BLK

BLK

GRY

SPARK KILLER

A1 52C A2

RED

RED

CAPACITOR

WHI

BLK

R

U

RED

RED

CAPACITOR

WHI

S

C

FAN MOTOR

S

V

PNK

R

BLK

C

R

S

COMPRESSOR

T W

COMPRESSOR TERMINAL

MAGNETIC CONTACTOR

− 12 −

FILE NO. SVM-04031

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit

	No.	Parts name	Type			Specifications
	1	Fan motor (for indoor)	AFP-220-50-4A		Output (Rated) 50W, 220-240V
	2	Thermo sensor (TA-sensor)	———	10k		Ω at 25°C
	3	DC-DC transformer (T01)	SWT-47		DC 390V, Secondary DC 12V, 7V
	4	Microcomputer	TMP87CM40AN
	5	Heat exchanger sensor	———	10k		Ω at 25°C
		(TC-sensor)
	6	Line filter (L01)	SS11V-R07190		19mH, AC0.7A
	7	Diode (DB01)	D3SBA60		4A, 600V
	8	Capacitor (C02)	KMH400VSSN47M22S 47µF, 400V
	9	Fuse (F01)	TSCR		T6.3A, 250V
	10	Varistor (R21, R22)	15G561K		560V
	11	Resistor (R01)	RF-2TK5R6		5.6Ω , 2W
	12	Louver motor	MP35EA12		Output (Rated) 2W, 6poles, 4phase,
					DC 12V

4-2. Outdoor Unit (RAS-18UAH-ES3)

No.	Parts name	Type	Specifications
			Output (Rated) 1500W, 2poles, 1phase, 220 – 240V, 50Hz
1	Compressor	PA225X3F-4L	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)	HF-240-42B-2	Winding resistance (Ω)				Red-Black	White-Black
			(at 20°C)				176.2	290.5
3	Running capacitor	451205KQ	AC 450V, 2µF
	(for fan motor)
4	Running capacitor	371456JCR	AC 370V, 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, 74)	15G471K	470V
11	Fuse (F01)	TSCR	T6.3A, 250V

– 13 –

FILE NO. SVM-04031-(1)

4-3. Outdoor Unit (RAS-18UA-ES3)

No.	Parts name	Type	Specifications
			Output (Rated) 1500W, 2poles, 1phase, 220 – 240V, 50Hz
1	Compressor	5KS225DAA	Winding resistance (Ω)		Red-Black	White-Black
			(at 20°C)		1.632	2.457
			Output (Rated) 42W, 6poles, 1phase, 220 – 240V, 50Hz
2	Fan motor (for outdoor)	HF-240-42B-1	Winding resistance (Ω)		Red-Black	White-Black
			(at 20°C)		176.2	290.5
3	Running capacitor	451205KQ	AC 450V, 2µF
	(for fan motor)
4	Running capacitor	371456JCR	AC 370V, 45µF
	(for compressor)
5	Magnetic contactor	CLK-26J	220 – 240V, 50Hz

4-4. Outdoor Unit (RAS-24UAH-ES3)

No.	Parts name	Type	Specifications
			Output (Rated) 2200W, 2poles, 1 phase, 220 – 240V, 50Hz
1	Compressor	PA290X3F-4MS	Winding resistance (Ω	)		Red-Black	White-Black
			(at 20°C)			1.07	2.20
			Output (Rated) 65W, 6poles, 1phase, 220 – 240V, 50Hz
2	Fan motor (for outdoor)	KPG6-71SB5P-T1	Winding resistance (Ω	)		Red-Black	White-Black
			(at 20°C)			64.4	127.4
3	Running capacitor	451355KQ	AC 450V, 3.5µF
	(for fan motor)
4	Running capacitor	371456JCR	AC 370V, 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-35J	220 – 240V, 50Hz
8	Transformer	TT-05	220 – 240V
9	Microcomputer	TMP47C840N
10	Varistor (R73, 74, 86)	15G471K	470V
11	Fuse (F01)	TSCRT	6.3A, 250V

– 14 –

FILE NO. SVM-04031-(1)

4-5. Outdoor Unit (RAS-24UA-ES3)

No.	Parts name	Type	Specifications
			Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz
1	Compressor	5JS315DAB	Winding resistance (Ω)	Red-Black	White-Black
			(at 20°C)	0.83	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	451355KQ	AC 450V, 3.5μF
	(for fan motor)
4	Running capacitor	371456JCR	AC 370V, 45μF
	(for compressor)
5	Magnetic contactor	CLK-35J	220 − 240V, 50Hz

– 15 –

FILE NO. SVM-04031

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-18UFHP-ES3 / RAS-18UAH-ES3

			Indoor unit	T
		Cooling	Evaporator
0.39m		Heating		0.49m
(Connecting pipe)
				(Connecting pipe)
	12.70 mm
			Multi blade fan	6.35 mm
0.39m
(Flexible pipe)
	12.70 mm	P		O.D.:6.35 mm
	O.D.:12.70 mm

	Packed valve			Packed valve
	( 12.70)			( 6.35)
	Heating
Cooling	4-way valve
	Muffler
Heating	Cooling Compressor	PA225X3F-4L
				Capillary tube
				1.0x1500S
			Capillary tube
	Accumulator			1.7x700S
		Condenser
				Refrigerant
		Propeller fan		R-410A 1.30 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 T (°C)
					Indoor	Outdoor
	Standard	2.7	45.0	High	20/–	7/6
Heating	High temperature*1	3.0 ~ 3.8	49.0 ~ 58.0	Low	27/–	24/18
	Low temperature	2.0	34.0	High	20/–	–10/–10
	Standard	0.9	10.0	High	27/19	35/24
Cooling	High temperature	1.0	15.0	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, the high temperature limit control operation is included.

– 16 –

FILE NO. SVM-04031

5-2. RAS-18UFP-ES3 / RAS-18UA-ES3

0.39m

(Connecting pipe)

12.70 mm

0.39m

(Flexible pipe)

12.70 mm

P

O.D.:12.70 mm

Packed valve

(

12.70)

T

Indoor unit

Evaporator

0.49m (Connecting pipe)6.35 mm

Multi blade fan

O.D.:6.35 mm

Packed valve ( 6.35)

Compressor	5KS225DAA		Capillary tube
			1.7x600S
		Condenser
			Refrigerant
		Propeller fan	R-410A 1.14 Kg

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 T (°C)
					Indoor	Outdoor
	Standard	0.9	10.0	High	27/19	35/24
Cooling	High temperature	1.0	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.)

– 17 –

FILE NO. SVM-04031

5-3. RAS-24UFHP-ES3 / RAS-24UAH-ES3

	Cooling
0.39m	Heating
(Connecting pipe)
12.70 mm
0.39m
(Flexible pipe)
12.70 mm	P
O.D.:12.70 mm
	Packed valve
	( 12.70)

T

Indoor unit

Evaporator

Multi blade fan

Packed valve

( 6.35)

0.49m (Connecting pipe)6.35 mm

O.D.:6.35 mm

	Heating
Cooling	4-way valve
Heating	Cooling Compressor	PA290X3F-4MS
Tank
				Capillary tube
		Condenser		2.0x700S
				Refrigerant
		Propeller fan		R-410A 1.60 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 T (°C)
						Indoor		Outdoor
	Standard	2.7	43.0	High		20/–		7/6
Heating	High temperature*1	3.1 ~ 4.0	52.0 ~ 59.0	Low		27/–		24/18
	Low temperature	2.7	36.0	High		20/–		–10/–10
	Standard	0.9	11.0	High		27/19		35/24
Cooling	High temperature	0.8	12.0	High		32/23		43/26
	Low temperature	0.5	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, the high temperature limit control operation is included.

– 18 –

FILE NO. SVM-04031

5-4. RAS-24UFP-ES3 / RAS-24UA-ES3

	Cooling
0.39m
(Connecting pipe)
12.70 mm
0.39m
(Flexible pipe)	P
12.70 mm

O.D.:12.70 mm

Packed valve

( 12.70 )

T

Indoor unit

Evaporator

Multi blade fan

Packed valve ( 6.35)

0.49m (Connecting pipe)6.35 mm

O.D.:6.35 mm

Tank
		Capillary tube
			2.0x700S
Compressor	5JS315DAG01
	Condenser
		Refrigerant
	Propeller fan	R-410A	1.60 Kg

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 T (°C)
					Indoor	Outdoor
	Standard	0.9	6.0	High	27/19	35/24
Cooling	High temperature	0.8	10.0	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-04031

6. CONTROL BLOCK DIAGRAM

6-1. RAS-18UFHP-ES3, RAS-24UFHP-ES3

Indoor Unit Control Panel

M.C.U.

8 MHz

Functions

Hi POWER

Heat Exchanger Sensor

Display

•

Louver Control

•

FILTER Sign

Temperature Sensor

3-minute Delay at Restart for Compressor

Display

•

Motor Revolution Control

PRE DEF.

Infrared Rays Signal Receiver

•

Processing

Sign Display

(Temperature Processing)

TIMER

Initiallizing Circuit

Display

Infrared

•

Timer

Rays

Clock Frequence

OPERATION

36.7 kHz

Oscillator Circuit

•

Drain Pump ON/OFF

Display

•

Serial Signal Communication

Indoor Fan

Motor

Power Supply

Louver ON/OFF Signal

Remote

Circuit

Control

Louver Motor

Louver Driver

Noise Filter

Serial Signal

Transmitter/

Relay

Float

Receiver

RY401

Switch

Drain

From Outdoor Unit

Pump

Serial Signal Communication

REMOTE CONTROL

Infrared Rays

Remote Control

Operation (START/STOP)

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

Filter Reset

– 20 –

FILE NO. SVM-04031

6-2. RAS-18UFP-ES3, RAS-24UFP-ES3

Indoor Unit Control Panel

M.C.U.

8 MHz

Functions

Hi POWER

Heat Exchanger Sensor

Display

•

Louver Control

•

FILTER Sign

Temperature Sensor

3-minute Delay at Restart for Compressor

Display

•

Motor Revolution Control

FAN-ONLY

Infrared Rays Signal Receiver

•

Sign Display

Processing

(Temperature Processing)

TIMER

Initiallizing Circuit

Infrared

Display

•

Timer

Rays

Clock Frequency

OPERATION

36.7 kHz

Oscillator Circuit

•

Drain Pump ON/OFF

Display

•

Compressor ON/OFF

Indoor Fan

Motor

Power Supply

Circuit

Driver

Louver ON/OFF Signal

Remote

Louver Motor

Control

Louver Driver

Noise Filter

Relay

Relay

Float

RY401

Switch

RY04

Drain

From Outdoor Unit

Pump

Compressor

REMOTE CONTROL

Infrared Rays

Remote Control

Operation (START/STOP)

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

Filter Reset

– 21 –

Operations according to the commands from the indoor unit

FILE NO. SVM-04031

7. OPERATION DESCRIPTION

7-1. Outline of Air Conditioner Control

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 air inlet of the indoor unit 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 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 motor

•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.) Heating and Cooling 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 [SWING] 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.

Table 7-1-1

			RAS-18UFHP-ES3		RAS-24UFHP-ES3
	MODEL
			Motor speed	Air flow level Motor speed		Air flow level
			(rpm)	(m3/h)	(rpm)	(m3/h)
	Cooling	HIGH	1060	800	1170	900
	and	MED	900	680	1000	750
	Fan only	LOW	800	580	850	650
		HIGH	1120	830	1210	930
	Heating	MED	950	700	1020	760
		LOW	850	650	860	660

MODEL		RAS-18UFP-ES3		RAS-24UFP-ES3
Cooling	HIGH	1060	800	1170	900
and	MED	900	680	1000	750
Fan only	LOW	800	580	850	650

LOW+ = LOW+MED 2

MED+ = MED+HIGH 2

– 22 –

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 [START / STOP] 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 microcontroller so that the previous operation can be effected thereafter simply by pressing [START / STOP] 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.

FILE NO. SVM-04031

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

temp.)
(Preset	0.5				ON
		ON
temp.) —		OFF	ON	OFF OFF ON
(Room
Preset		0	Common relay
temp.		Compressor		4-way valve	Outdoor fan	OPERATION display

temp.)	+3
(Preset—			M+
	+2
	+2.5
			*1
temp.)	*1
	*1
(Room	+1.5
	+0.5
	+1		L—

Preset 0 temp.

NOTE :

*1: The values marked with *1 are calculated and controlled by the difference in motor speed between M+ and L–.

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

(2) ECO and Hi Power operation cannot be set.

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
	(Preset		M+
		+2.5
		*1
	—	+2
		*1
	temp.)
		+1.5
		*1
	(Room	+1
			L—
		+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 –

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.

FILE NO. SVM-04031

7-2-4. Heating operation *Heating and cooling model only

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

(1)The compressor, 4-way valve, outdoor fan and operation display on the remote control are controlled as shown in Fig. 7-2-6.

(Preset—temp.)temp.)	+3		ON:5min.ON:6min. OFF:5min.OFF:4min.			ON:5min.ON:6min. OFF:5min.OFF:4min.
(Room	+2			ON	OFF		ON
	+1
			OFF			OFF
Preset		0
			Compressor	relayCommon	valveway-4	fanOutdoor	OPERATION display
temp.

Fig. 7-2-4

(2)The microcontroller 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.

Room temp.

Preset temp.+1

Preset temp.

Compressor	ON		ON		ON		ON
Outdoor fan		OFF		OFF		OFF
Indoor fan
	L.	*S.L.	L.	S.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.

Preset		0
temp.
temp.)				OFF ON		ON	OFF	ON
— (Preset
	-0.5			Compressor	relayCommon	valveway-4		OPERATION display
							fanOutdoor
(Roomtemp.)
				ON			ON

Fig. 7-2-6

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

	Preset		0	L
	temp.	-0.5		*2
	temp.)	-1.5
		-1		*1
	(Preset	-2
				M+
	temp.) —
		-5.0
	(Room	-5.5		H
		[FAN AUTO]

*1, *2 : The values marked with *1 and *2 are calculated and controlled by the difference in motor speed between M+ and L.

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

– 24 –