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

FILE NO. DAS-SM-00-002

SUPPLEMENT

SERVICE MANUAL

AIR-CONDITIONER

SPLIT WALL TYPE

RAS-13YKX / RAS-13YAX RAS-13YK-E / RAS-13YA-E 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		RAS-13YK-E/13YA-E		RAS-13YK-ES/13YA-ES
ITEM							Cooling
Capacity					kW *1		220V–240V
							3,70–3,75
					Phase		Single
Power source					V		220–240
					Hz		50
Power consumption					kW		1,25–1,29
Power factor				%			98–95
Running current					V		220V–240V
	Indoor/Outdoor				A	0,15/5,66–0,15/5,53
Starting current					A		24
Moisture removal					lit/h		2,0
Noise	Indoor (H/M/L)				dB (A)		44 / 39 / 34
(SPL at 1 meter)	Outdoor (220–240V)				dB (A)	47–48		47–48
Refrigerant	Name of refrigerant					R-22		R-410A
	Rated volume				kg	0,90		0,82
Refrigerant control							Capillary tube
	Gas side size				mm	12,7		9,52
	Connection type					Flare connection
	Liquid side size				mm		6,35
Interconnection pipe	Connection type					Flare connection
	Maximum length (of one way)				m *2		15
	Maximum height difference
	Indoor unit						6
		↑			m
	Outdoor unit	↓
Condensate drain pipe	Outer diameter				mm		16
INDOOR UNIT						RAS-13YK-E		RAS-13YK-ES
	Height				mm		265
Dimensions	Width				mm		790
	Depth				mm		189
Net weight					kg		8
Evaporator type							Finned tube
Indoor fan type							Cross flow fan
	High fan				m³/h		650
Air flow rate	Medium fan				m³/h		560
	Low fan				m³/h		510
Fan motor output					W		20
Air filter						Polypropylene net filter (Washable)
OUTDOOR UNIT						RAS-13YA-E		RAS-13YA-ES
	Height				mm		538
Dimensions	Width				mm		780
	Depth				mm		300
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	Model					2KS224D5CD02		PA150X2T-4FM
	Output				W		1100
Safety device						Fuse, Overload relay
Auto louver							Yes
Usable outdoor temperature range					°C		21–43

Specifications are subject to change without notice.

– 3 –

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

						MODEL		RAS-13YKX/13YAX		RAS-13YK-HX/13YA-HX
ITEM								Cooling
Capacity							kW *1	220V–240V
								3,70–3,75		3,55–3,55
							Phase	Single
Power source							V	220–240
							Hz	50
Power consumption							kW	1,25–1,29		1,04–1,08
Power factor						%		98–95		98–95
Running current							V	220V–240V
	Indoor/Outdoor						A	0,15/5,66–0,15/5,53		0,15/4,68–0,15/4,61
Starting current							A	24		22
Moisture removal							lit/h	2,0
Noise	Indoor (H/M/L)						dB (A)	44 / 39 / 34		44 / 39 / 34
(SPL at 1 meter)	Outdoor (220–240V)						dB (A)	47–48		49–50
Refrigerant	Name of refrigerant							R-22
	Rated volume						kg	0,80		0,75
Refrigerant control								Capillary tube
	Gas side size						mm	12,7
	Connection type							Flare connection
	Liquid side size						mm	6,35
Interconnection pipe	Connection type							Flare connection
	Maximum length (of one way)						m *2	15
	Maximum height difference
	Indoor unit							6
			↑				m
	Outdoor unit		↓
Condensate drain pipe	Outer diameter						mm	16
INDOOR UNIT								RAS-13YKX		RAS-13YK-HX
	Height						mm	265
Dimensions	Width						mm	790
	Depth						mm	189
Net weight							kg	8
Evaporator type								Finned tube
Indoor fan type								Cross flow fan
	High fan						m³/h	650
Air flow rate	Medium fan						m³/h	560
	Low fan						m³/h	510
Fan motor output							W	20
Air filter								Polypropylene net filter (Washable)
OUTDOOR UNIT								RAS-13YAX		RAS-13YA-HX
	Height						mm	538
Dimensions	Width						mm	780
	Depth						mm	300
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-230-28P)
Compressor	Model							PH160T2-4L2		PH142T2-4K7
	Output						W	1100
Safety device								Fuse, Overload relay
Auto louver								Yes
Usable outdoor temperature range							°C	21–43

Specifications are subject to change without notice.

– 4 –

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

					MODEL		RAS-13YKX-T/13YAX-T		RAS-13YKX-T2/13YAX-T2
ITEM							Cooling
Capacity						kW *1	220V
							3,60
						Phase	Single
Power source						V	220
						Hz	50
Power consumption						kW	1,16		1,04
Power factor					%		98
Running current						V	220V
	Indoor/Outdoor					A	0,15/5,24		0,15/4,68
Starting current						A	22
Moisture removal						lit/h	2,0
Noise	Indoor (H/M/L)					dB (A)	44 / 39 / 34
(SPL at 1 meter)	Outdoor (220V)					dB (A)	47		49
Refrigerant	Name of refrigerant						R-22
	Rated volume					kg	0,72		0.83
Refrigerant control							Capillary tube
	Gas side size					mm	12,7
	Connection type						Flare connection
	Liquid side size					mm	6,35
Interconnection pipe	Connection type						Flare connection
	Maximum length (of one way)					m *2	15
	Maximum height difference
	Indoor unit							6
			↑			m
	Outdoor unit		↓
Condensate drain pipe	Outer diameter					mm	16
INDOOR UNIT							RAS-13YKX-T		RAS-13YKX-T
	Height					mm	265
Dimensions	Width					mm	790
	Depth					mm	189
Net weight						kg		8
Evaporator type							Finned tube
Indoor fan type							Cross flow fan
	High fan					m³/h	650
Air flow rate	Medium fan					m³/h	560
	Low fan					m³/h	510
Fan motor output						W	20
Air filter							Polypropylene net filter (Washable)
OUTDOOR UNIT							RAS-13YAX-T		RAS-13YAX-T
	Height					mm	538
Dimensions	Width					mm	780
	Depth					mm	300
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	Model						RM5515FNE96
	Output					W	1100
Safety device							Fuse, Overload relay
Auto louver							Yes
Usable outdoor temperature range						°C	21–43

Specifications are subject to change without notice.

– 5 –

Note : *1

• Capacity is based on the following temperature conditions.

CONDITION	COOLING
TEMPERATURE
(DB)	27 °C
Indoor unit inlet air temperature
(WB)	19 °C
(DB)	35 °C
Outdoor unit inlet air temperature
(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. CONSTRUCTION VIEWS

2-1. Indoor Unit

Air inlet	Air filter	Heat exchanger
	790	189

265

1800

Air outlet

790

232

326

232

Hanger

	50
47	10

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

50

Drain hose (0,54m)	321
Hanger
Connecting pipe (0,39m)		Connecting pipe (0,49m)
Flare Ø12,7		(Flare Ø6,35)
(Flare Ø9,52 for 13YK-ES only)

			65,5		659	65,5	Hanger
					450
							For stud bolt
		Hanger			326
							(Ø8~Ø10)
					66 or more
					Minimum		For stud bolt
	46	20	2,5		distance	20	(Ø6)
					to ceiling
							Minimum
265	178,5	17	Minimum			20	distance
			distance				to wall
			to wall
			120 or more			120 or more
	40,5	3,5				37	40,5
				Hanger	Hanger
				Center line	Installation
					plate outline
						60,5
			76	319	269	126
					790

10

47

Knock out system

– 7 –

2-2. Outdoor Unit

A Detail Drawing

		600
	50	R10
	36
325 301		23
		Ø6 hole

Ø11x14 hole

A

		120
		Gas side (Flare Ø12,7)
		(Flare Ø9,52 for 13YA-ES)
325	52,5	Liquid side (Flare Ø6,35)
	Ø25Drain outlet	8-Ø6 hole (for fixing outdoor unit)
		6-Ø11x14 hole (for Ø8-Ø10 anchor bolt)

Handle	Fan guard
	ø420
	538		27
			100	130
300	600	90	(8,5)
	780		59

Electric parts cover

	Z
54 61
	Service
	port
325 (pitch)	(8,5)
342

Z View

Installation dimension

	100 or more	600
		Air inlet 600 or more
	325
	100 or more	600 or more 4xØ11x14 Long holes (for Ø8-Ø10 anchor bolt)
	Air outlet

– 8 –

3. WIRING DIAGRAM

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

A	POWER L
	TERMINAL N
	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

C

									LOUVER MOTOR
	Datail B			B
RAS-13YKX, 13YKX-T					RAS-13YK-E													INFRARED RAYS RECEIVE
																			AND INDICATION PARTS
RAS-13YKX-T2, 13YK-HX					RAS-13YK-ES
																			1	2	3	4	5 6	7	8 9		CN25
																			1	2	3	4	5 6	7	8 9
THERMAL						THERMAL													BLU BLU BLU BLU BLU BLU PNK BLK WHI
77˚C x 1						77˚C x 2
FUSE						FUSE
	ORN	ORN			ORN	ORN						BLU		PNK YEL ORN RED BRW
				CN04	1 2								6		5 4		3	2 1
					1 2					CN07 6					5 4		3	2 1	1	2	3	4	5 6	7	8 9		CN13
BLK	P04	SG01	R22
GRN&YEL		DSA	VARISTOR
						VARISTOR
				F01
	BRW			6,3A						C01					R01				DB01
																				C02
				250V
	BLU		3	3	R21 C15																		POWER
																							SUPPLY
									L01
		RY02																	DC 12V				CIRCUIT
				RY01
		BLK 4		4						CR03					IC 03				DC 5V
		WHI
																C58									MCC-798
						1	2	3	CN11		5			3		1	CN10			1	2	CN03			1	2	CN01
						1	2	3		BLK	5			3		1				1	2				1	2
						YEL BLK BRW								PNK WHI					BLK BLK					BLK BLK
										1	2	3		4	5	6
										1	2	3		4	5	6

	TERMINALBLK		WHI	GRN&YEL	AC FAN MOTOR
	INDOOR
	BLOCK	1		2
				INDOOR
	OUTDOOR			OUTDOOR
	TERMINAL
	BLOCK	1		2
	BLK			GRN & YEL
OVER LOAD				CHASSIS
RELAY	BLK BLK	RED RED
	FAN			CAPACITOR	CAPACITOR
COMPRESSOR	MOTOR
				RED
				WHI
	PNK
	WHI

THERMO HEAT SENSOR EXCHANGER

(TA) SENSOR (TC)

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE

GRN&YEL : GREEN & YELLOW

– 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 (for indoor)
1		MMF-240-20-4A	Winding resistance (W)	Red-Black	White-Black
			(at 20°C)	220,8	324,3
2	Thermo. sensor (TA-sensor)	(Microprocessor)	10kW at 25°C
3	Switching transformer	SWT-47
4	Microcomputer	TMP87CK40AN
5	Power relay, Common relay	DI1U	Coil : DC 12V 75mA, Rated AC 250V 20A
	(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, 400V
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

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
			RAS-13YA-E	2KS224D5CD02
					Winding resistance (W)	C-R	C-S
					(at 20°C)	2,21	2,92
					Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz
			RAS-13YAX	PH160T2-4L2
					Winding resistance (W)	C-R	C-S
					(at 20°C)	2,43	3,78
					Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz
			RAS-13YAX-T
	1	Compressor		RM5515FNE96	Winding resistance (W)	C-R	C-S
			RAS-13YAX-T2
					(at 20°C)	2,16	3,90
					Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz
			RAS-13YA-HX	PH142T2-4K7
					Winding resistance (W)	C-R	C-S
					(at 20°C)	2,43	3,78
					Output (Rated) 1100W, 2poles, 1phase, 220–240V, 50Hz
			RAS-13YA-ES	PA150X2T-4FM
					Winding resistance (W)	C-R	C-S
					(at 20°C)	2,49	3,95

– 10 –

No.	PARTS NAME		TYPE	SPECIFICATIONS
				Output (Rated) 27W, 6poles, 1phase, 220–240V, 50/60Hz
		RAS-13YA-E
			UE6-31C5P	Winding resistance (W)	Red-Black	White-Black
		RAS-13YA-ES
				(at 20°C)	210	435
				Output (Rated) 27W, 6poles, 1phase, 220–240V, 50/60Hz
			UE6-31C5P	Winding resistance (W)	Red-Black	White-Black
		RAS-13YAX		(at 20°C)	210	435
		RAS-13YAX-T		Output (Rated) 30W, 6poles, 1phase, 220–240V, 50/60Hz
	Fan motor		HF-240-30A
2				Winding resistance (W)	Red-Black	White-Black
	(for outdoor)		(For altinate use)
				(at 20°C)	245	388
				Output (Rated) 28W, 6poles, 1phase, 220–240V, 50/60Hz
			AF-230-28P	Winding resistance (W)	Red-Black	White-Black
		RAS-13YA-HX		(at 20°C)	162,1	233,5
		RAS-13YAX-T2		Output (Rated) 42W, 6poles, 1phase, 220–240V, 50/60Hz
			HF-240-42A
				Winding resistance (W)	Red-Black	White-Black
			(For altinate use)
				(at 20°C)	176,	291
		RAS-13YA-E	SK-50FMP1,5U2	AC 500V, 1,5mF
		RAS-13YA-ES
	Running capacitor	RAS-13YAX	DS501155BPQA	AC 500V, 1,5mF
3		RAS-13YAX-T
	(for fan motor)
		RAS-13YAX-T2	DS451205BPQA	AC 450V, 2,0mF
		RAS-13YA-HX	SK-45FMP02U2	AC 450V, 35mF
		RAS-13YAX	SH-D CAP	AC 400V, 35mF
	Running capacitor	RAS-13YA-E	SK-40CMP35U1	AC 400V, 25mF
4		RAS-13YA-ES
	(for compressor)
		RAS-13YA-HX
		RAS-13YAX-T	SH-D CAP	AC 440V, 25mF
		RAS-13YAX-T2
		RAS-13YAX
		RAS-13YA-E
		RAS-13YAX-T	LAAO00A	U/T 9,0A (80°C), OPEN 135 ± 5°C, CLOSE 75 ± 11°C
5	Overload relay	RAS-13YAX-T2
		RAS-13YA-HX
		RAS-13YA-ES	—	Internal Overload Use

– 11 –

5. REFRIGERANT CYCLE DIAGRAM

Connecting pipe 0,39m Ø12,7

(for RAS-13YK-ES Ø9,52)

	Indoor unit	T
	Evaporator
	Cross flow fan

Connecting pipe 0,49m Ø6,35

		Optional piping kits
O.D.:12,7mm	P	RB-P31BFH1 (3m)		O.D.:6,35mm
		RB-P51BFH1 (5m)
(for RAS-13YK-ES/
		RB-P71BFH1 (7m)
13YA-ES 9,25mm)
	Packed valve		Packed valve
	Ø12,7 (for RAS-13YA-ES Ø9,52)		(Ø6,35)
Accumulator			Capillary tube
			B
Compressor	A		Dryer
		Condenser
		Propeller fan	Refrigerant	C

Outdoor unit

Mark ( ) means check points of Gas Leak

	MODEL	A Compressor	B Capillary tube		C Refrigerant
	RAS-13YK-E	2KS224D5CD02	Ø1,7 x 1,100 l		R22 (0,90 kg)
	RAS-13YKX	PH160T2-4L2	Ø1,7 x	900 l	R22 (0,80 kg)
	RAS-13YKX-T	RM5515FNE96			R22 (0,72 kg)
	RAS-13YKX-T2		Ø1,7 x	800 l	R22 (0,83 kg)
	RAS-13YK-HX	PH142T2-4K7			R22 (0,75 kg)
	RAS-13YK-ES	PA150X2T-4FM	Ø1,5 x	900 l	R410A (0,82 kg)

• For R-22

		Standard	Surface temp. of heat	Fan speed	Ambient temp.
	50Hz	pressure P	exchanger interchanging		conditions DB/WB (°C)
				(indoor)
		(kg/cm²G)	pipe T (°C)		Indoor	Outdoor
	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	Surface temp. of heat	Fan speed	Ambient temp.
	50Hz	pressure P	exchanger interchanging		conditions DB/WB (°C)
				(indoor)
		(kg/cm²G)	pipe T (°C)		Indoor	Outdoor
	Standard	0,9	10,0	High	27/19	35/24
Cooling	High temperature	1,1	16,0	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.)

– 12 –

– 13 –

	Indoor Unit Control Panel		C. P. U
			Functions
Heat Exchanger Sensor
			• Louver Control
Thermo. Sensor

Infrared Rays Signal Receiver

Infrared

Rays

Remote Control

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECONO.

AC 220-240V 50Hz

AC 220V 50Hz (RAS-13YKX-T, 13YKX-T2 only)

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Noise Filter

•3-minute Delay at Restart for Compressor

•Motor Revolution Control

•Processing

(Temperature Processing)

•Timer

Compressor, Outdoor Fan	Louver
ON/OFF Signal	ON/OFF Signal
Relay Driver	Louver Driver
Relay
RY01
Relay
RY02

Compressor		Outdoor Fan Motor

Operation

Display

Timer

Display

ECONO.

Sign Display

FAN-ONLY

Sign Display

Indoor

Fan Motor

Louver

Motor

DIAGRAM BLOCK CONTROL .6

7. OPERATION DESCRIPTIONS

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.

	Set temp.)		28
	–			HIGH
	temp.		27
				MED
	(Room		26	LOW(+)
			25
	Set		24	LOW
	temp.			LOW

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

Table 7-1-1 Manual setting of FAN SPEED

Indication of	HIGH Air volume
FAN SPEED	(m3/hr)
LOW	510
MED	560
HIGH	650

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.

temp.)			ON
Set–		+1
temp.			OFF	ON	ON
(Room
Set		0
temp.			Compressor Outdoor fan (RY01)	Common relay (RY02)	OPERATION display

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.

				FAN
temp.)
				AUTO	Manual
Set–		+4		HIGH
				MED
temp.		+3		LOW(+)	to the set
					According
(Room		+2			position
				LOW
		+1
Set		0		LOW
				(continuous)
temp.
			RY01
			OFF

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 by pushing the START/STOP button.

– 14 –

7-2-1. Louver Control

(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.

	temp.)		+3	ON:6min.	OFF:4min.
	temp.– Set			ON:5min.	OFF:5min.
			+2			ON	ON
	(Room
			+1	OFF
	Set		0
	temp.			Compressor fanOutdoor (RY01)		relayCommon (RY02)	OPERATION display

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	ON		ON		ON		ON
Outdoor fan		OFF		OFF		OFF
Indoor fan
	L.	*S.L.	L.	S.L.	L.	S.L.	L.
	*Super Low

Fig. 7-3-2

– 15 –

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.

(Room temp. – Set temp.)

		Powerful	(The same cooling mode as the room temperature control is set at set temp. –1˚C)
		Cooling mode	The Louver moved downward. (DIRECT AUTO COOL)
	+4
		Cooling mode	(The same cooling mode as the room temperature control is set at set temp. –1˚C)
	+1
		Dry mode	(The same dry operation as the room temperature control is set at set temp. –1˚C)

Fig. 7-4-1

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
+2
		Set temp.
		is changed
+1
Set temp.	0H	1H	2H	TIME

ECONO. button is pushed

Fig. 7-5-1

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.

Heat exchanger
temperature	Compressor Outdoor fan

	(˚C)	ON
	7
		Less than 5˚C continues
	5	for 5 minutes
		OFF

Fig. 7-6-1

– 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					MOTION
Push the TEMPORARY button			Stand-by
continuously more than three			↓
seconds.			The system starts to operate.		The green light will be lit.
			↓	about three seconds after
0		3S	The unit beeps three times.		The orange light will be lit.
			↓
TEMPORARY			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.
• When the system is operating
OPERATION					MOTION
Push the TEMPORARY button			Operating		The green light is lit.
continuously more than three			↓
seconds.			The system stops to operate.		The green light is turned off.

↓about three seconds after

0	3S	The unit beeps three times.
		↓
		The system stops.

TEMPORARY

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.

–17 –

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				MOTION
Push the TEMPORARY button		Stand-by
continuously more than three		↓
seconds.		The system starts to operate.		The orange light will be lit.
		↓	about three seconds after
0		The unit beeps three times.		The green light will be lit.
	3S
		↓
TEMPORARY		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.
• When the system is operating
OPERATION				MOTION
Push the TEMPORARY button		Operating		The orange light is lit.
continuously more than three		↓
seconds.		The system stops to operate.		The orange light is turned off.
		↓	about three seconds after
0		The unit beeps three times.
	3S	↓
TEMPORARY		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.

– 18 –