Toshiba RAV-SM560XT-E, RAV-SM800XT-E User Manual

FILE NO. SVM-03021

SERVICE MANUAL

AIR-CONDITIONER

UNDER CEILING / CONSOLE TYPE

RAV-SM560XT-E / RAV-SM560AT-E RAV-SM800XT-E / RAV-SM800AT-E

R410A

Sep., 2003

	CONTENTS
1.	SPECIFICATIONS.............................................................................................................	1
2.	CONSTRUCTION VIEWS .................................................................................................	4
3.	SYSTEMATIC REFRIGERATING CYCLE DIAGRAM ......................................................	7
4.	WIRING DIAGRAM ...........................................................................................................	9
5.	SPECIFICATION OF ELECTRICAL PARTS ..................................................................	12
6.	REFRIGERANT R410A ..................................................................................................	13
7.	CONTROL BLOCK DIAGRAM .......................................................................................	21
8.	OPERATION DESCRIPTION ..........................................................................................	22
9.	INSTALLATION PROCEDURE .......................................................................................	27
10.	TROUBLESHOOTING CHART ......................................................................................	46
11.	DETACHMENTS .............................................................................................................	60
12.	EXPLODED VIEWS AND PARTS LIST ..........................................................................	80

1. SPECIFICATIONS

1-1. Indoor Unit

Model name

RAV-SM560XT-E

RAV-SM800XT-E

Cooling

Heating

Average

Cooling

Heating

Average

Standard capacity (Note 1)

kW

5.0

5.6

6.7

8.0

(1.5 Ð 5.6)

(1.5 Ð 6.3)

(2.2 Ð 8.0)

(2.2 Ð 9.0)

Heating low temp. capacity (Note 1) (kW)

4.9

5.8

Energy consumption effect ratio (Cooling)

2.67 [D]

3.29 [C]

2.98

2.46 [E]

3.00 [D]

2.73

Power supply

1 phase 220 Ð 240V 50Hz

Electrical

Running current

(A)

8.95 Ð 8.20

8.13 Ð 7.46

13.15 Ð 12.06

12.91 Ð 11.84

Power consumption

(kW)

1.87

1.7

2.72

2.67

characteristics

(Low temp.)

(kW)

2.18

2.29

Power factor

(%)

95

95

94

94

Main unit

Pure white

Appearance

Ceiling panel

Model

ÐÐÐ

(Sold separately)

Panel color

ÐÐÐ

Height

(mm)

633

Main unit

Width

(mm)

1093

Outer

Depth

(mm)

208

dimension

Ceiling panel

Height

(mm)

ÐÐÐ

Width

(mm)

ÐÐÐ

(Sold separately)

Depth

(mm)

ÐÐÐ

Total weight

Main unit

(kg)

23

Ceiling panel

ÐÐÐ

Heat exchanger

Finned tube

Fan

Multi blade fan

Fan unit

Standard air flow High (Mid./Low)

(m3/h)

800 (680/580)

900(750/550)

Motor

(W)

50

Air filter

Washable filter

Controller (Sold separately)

Wireless remote control

Gas side

(mm)

12.7 (1/2Ó)

15.9 (5/8Ó)

Dimensions pipe

Liquid side

(mm)

6.4 (1/4Ó)

9.5 (3/8Ó)

Drain port

(Nominal dia.)

25 (Polyvinyl chloride tube)

Sound level

High (Mid./Low) (Note 2)

(dB¥A)

43

39

36

46

42

37

Note 1	: The cooling capacities and electrical characteristics are measured under the conditions specified by JIS B 8616
	based on the reference piping length 7.5 m with 0 meter height.
Note 2	: The sound level is measured in an anechoic chamber in accordance with JIS B8616. Normally, the values
	measured in the actual operating environment become larger than the indicated values due to the effects of
	external sound.
Note	: Rated conditions	Cooling	: Indoor air temperature 27°C DB/19°C WB, Outdoor air temperature 35°C DB
		Heating	: Indoor air temperature 20°C DB, Outdoor air temperature 7°C DB/6°C WB

Ð 1 Ð

• Operation characteristic curve

<Cooling>								<Heating>
	14
	12								14
		RAV-SM800XT-E									RAV-SM800XT-E
	10								12
(A)								(A)	10
	8
Current								Current	8
	6
									6
	4			RAV-SM560XT-E								RAV-SM560XT-E
									4
				¥ Conditions								¥ Conditions
	2			Indoor : DB27ûC/WB19ûC								Indoor : DB20ûC
				Outdoor : DB35ûC					2			Outdoor : DB7ûC/WB6ûC
				Air flow : High								Air flow : High
				Pipe length : 7.5m								Pipe length : 7.5m
	0			230V					0			230V
		15 20	40	60	70	80	100			1520	40	60	80	90	100
	0								0

Compressor speed (rps)

Compressor speed (rps)

• Capacity variation ratio according to temperature
<Cooling>							<Heating>
	105							120
	100							110
	95							100
	90							90
(%)	85						(%)	80
ratio							ratio	70
	80							60
Capacity							Capacity
	75							40
								50
	70
	65							30
	60			¥ Conditions				20							¥ Conditions
	55			Indoor : DB27ûC/WB19ûC				10							Indoor : DB20ûC
				Indoor air flow : High											Indoor air flow : High
				Pipe length : 7.5m											Pipe length : 7.5m
	50							0
	32	33	34 35 36	37 38 39 40 41	42	43		-14	-12	-10	-8	-6	-4	-2	0	2	4	6	8	10

Outsoor temp. (ûC)

Outsoor temp. (ûC)

Ð 2 Ð

1-2. Outdoor Unit

Model name					RAV-SM560AT-E		RAV-SM800AT-E
Appearance					Silky shade (Muncel 1Y8.5/0.5)
Power supply					1 phase 230V (220 Ð 240V) 50Hz
					(Power exclusive to outdoor is required.)
		Type			Hermetic compressor
Compressor		Motor		(kW)	1.1		1.6
		Pole				4 poles
Refrigerant charged				(kg)	R410A 0.9		R410A 1.5
Refrigerant control					Pulse motor valve
		Standard length			20 (without additional charge)
		Max. total length		(m)	30		50
Pipe		Over 20m			Add 20g/m (Max. 200g)		Add 40g/m (Max. 1200g)
		Height difference	Outdoor lower	(m)		15
			Outdoor higher	(m)		30
		Height		(mm)	595		795
Outer
		Width		(mm)	780		780
dimension
		Depth		(mm)	270		270
Total weight				(kg)	35		55
Heat exchanger						Finned tube
		Fan				Propeller fan
Fan unit		Standard air flow High		(m³/h)	2400		3400
		Motor		(W)	43		63
Connecting		Gas side		(mm)	¯12.7 (1/2Ó)		¯15.9 (5/8Ó)
pipe		Liquid side		(mm)	¯6.4 (1/4Ó)		¯9.5 (3/8Ó)
Protection device					Discharge temp. sensor
					Over-current sensor
					Compressor thermo.
Sound level		High (Mid./Low)		(dB¥A)	46/48		48/50
(Note 2)		(Cooling/Heating)

Note 1 : The sound level is measured in an anechoic chamber in accordance with JIS B8616. Normally, the values measured in the actual operating environment become larger than the indicated values due to the effects of external sound.

Note 2 : Rated conditions Cooling : Indoor air temperature 27¡C DB/19¡C WB, Outdoor air temperature 35¡C DB Heating : Indoor air temperature 20¡C DB, Outdoor air temperature 7¡C DB/6¡C WB

Ð 3 Ð

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

Front panel

1093	208

633

Knock out system

Grille air inlet

Back body

For stud bolt

200 Min

(¯8 Ð ¯10)

For stud bolt (¯6)

330

165

	1093
	1015
	742
	450
20	20

¯74

UNDER CEILING & CONSOLE INSTALLATION

Installation plate

Mount plate

M10 Suspention bolt

633
460
		160
Min	57	18
70	Wireless remote control

Knock out system

Ð 4 Ð

2-2. Outdoor Unit (RAV-SM560AT-E)

Drain hole (¯25)	Drain hole (2-¯20 x 88 long hole)
83	600	97
A legs	115.3 125
		29
	30

308	hole(Longpitch	anchorFor bolt)	302	hole¯6pitch	153	150	11	76		270	330
							30
							B legs	21	780	31

49.5	147		(49.3)	115.3	Discharge guide mounting hole			216
21				Discharge guard	(4-¯4 embossing)
			center dividing)				21
521		593 598				31
			(Fan500			23
						90.6	132
25	220			500 (Fan center dividing)		Charge port 31		134

Protective net mounting hole (2-¯4 embossing)

43	707	30
Protective net mounting hole
(4-¯4 embossing)		60

Valve cover

Earth terminal

475

Refrigerant pipe connecting port

(¯12.7 flare at gas side) Refrigerant pipe connecting port (¯6.4 flare at liquid side)

Space required for service

			600
			52
			36
	11	R15	2-¯6 hole
	308	302	Product
			external line
		¯11 x 14 U-shape hole

Details of A legs

		¯11 x 14 U-		2-¯11 x 14 U-shape holes
		shape holes	2-¯6 hole
				(For ¯8Я10 anchor bolt)
	308	302	external
					150 moreor
			Product
			line
	11		R15	365	150
		36			or more
		52
			600
	Details of B legs				500
					or more

600

Suction port

	300
	or more
Discharge	(Minimum
port	distance up to wall)

	Discharge	2-¯11 x 14 long hole
	port
		(For ¯8Я10 anchor bolt)

Ð 5 Ð

2-3. Outdoor Unit (RAV-SM800AT-E)

Knockout

(For draining) Drain hole (¯20 x 88 burring hole)

17.5				29	90	191	Drain hole (¯25 burring hole)
		21					20	Part B
						Suction
						port
	pitch	bolt)	70	Suction	43		40
365	hole(Long	anchorfor	40		Knockout
				port
					(For draining)
17.5				26	60	Discharge		43	39	47
			21			port	Part A
					150	300		95
						900
					314

		Installation bolt hole
17.5		(¯12 x 17 U-shape holes)
						40
	Details of B part
	Details of A part
17.5					40
		Installation bolt hole
		(¯12 x 17 U-shape holes)

101		Handles
		(Both sides)
		Refrigerant pipe connecting port
565		(¯9.5 flare at liquid side)
		Refrigerant pipe connecting port
		(¯15.9 flare at gas side)
		2
		60 67	154	264
Discharge guide	Z	60 27	1
	300	96
mounting hole
(4-¯4 embossing)	307			Knockout for lower piping

86 7

28 320

Z views

58 7

1

90 60 27

					Space required for service
		795			2-¯12 x 17 U-shape holes
					(For ¯8Я10 anchor bolt)
				2	46	150 moreor
	25	85	165	8060	365	150
						or more
58	2			1 30	45	500
161
	400					or more

600

Suction port

	150
	or more
Discharge	(Minimum
port	distance up to wall)

	Discharge	2-¯12 x 17 long hole
	port
		(For ¯8Я10 anchor bolt)

Ð 6 Ð

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM

3-1. RAV-SM560XT-E / RAV-SM560AT-E

Indoor unit

TCJ sensor

Air heat exchanger

TC sensor

Outer diameter of refrigerant pipe

Gas side A	Liquid side B
6.4 mm	12.7 mm

TS sensor

TD sensor

4-way valve (VT7101D)

Muffler19 x L160

Rotary compressor (DA130A1F-23F)

Refrigerant pipe	Refrigerant pipe
at liquid side	at gas side
Outer dia. B	Outer dia. A

Max 30m

Packed valve		Packed valve
Outer dia. B	Outdoor unit	Outer dia. A
		PMV
		(SKV-18D26)
TO sensor
		Strainer
	TE
	sensor

Heat exchanger8 multiple thread

ripple 1 row 22 stages FP1.3 flat fin

Distributor

R410A 0.9 kg

Cooling

Heating

		Pressure		Pipe surface temperature (°C)				Compressor		Indoor/Outdoor
		(MPa)		Discharge	Suction	Indoor heat	Outdoor heat	revolutions	Indoor	temp. conditions
						exchanger	exchanger	per second	fan	(DB/WB) (°C)
								(rps)
		Pd	Ps	(TD)	(TS)	(TC)	(TE)			Indoor	Outdoor
								*
	Standard	3.1	0.9	85	13	10	47	74	HIGH	27/19	35/Ð
Cooling	Overload	3.8	1.0	96	13	12	60	71	HIGH	32/24	43/Ð
	Low load	0.9	0.5	25	7	10	5	28	LOW	18/15.5	Ð5/Ð
	Standard	2.8	0.6	87	3	46	1	87	HIGH	20/Ð	7/6
Heating	Overload	3.3	1.1	78	22	55	16	55	LOW	30.Ð	24/18
	Low load	1.7	0.2	110	Ð20	26	Ð22	110	HIGH	0	Ð20/(70%)

*4 poles are provided to this compressor.

The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.

Ð7 Ð

3-2. RAV-SM800XT-E / RAV-SM800AT-E

Indoor unit

Outer diameter of refrigerant pipe

Gas side A	Liquid side B
9.5 mm	15.9 mm

TS sensor

TD sensor

TCJ sensor

Air heat exchanger

TC sensor

	Refrigerant pipe		Refrigerant pipe
	at liquid side		at gas side
	Outer dia. B		Outer dia. A
				Max
				50m
Pd	Packed valve		Packed valve	Ps
	Outer dia. B	Outdoor unit	Outer dia. A
	Strainer		Modulating (PMV)
			(SKV-18D26)
	TO sensor
			Strainer

4-way valve

Accumulator	Muffler (STF-0213Z)
(1500cc)	25 x L210
	25 x L160
	Rotary compressor
	(DA220A2F-20L)

TE sensor

Heat exchanger 8 1 row 30 stages FP1.3 flat fin

Capillary3 x 2

x L530

R410A 1.5 kg

Cooling

Heating

		Pressure		Pipe surface temperature (°C)				Compressor		Indoor/Outdoor
		(MPa)		Discharge	Suction	Indoor heat	Outdoor heat	revolutions	Indoor	temp. conditions
						exchanger	exchanger	per second	fan	(DB/WB) (°C)
								(rps)
		Pd	Ps	(TD)	(TS)	(TC)	(TE)			Indoor	Outdoor
								*
	Standard	3.3	0.9	89	8	8	40	64	HIGH	27/19	35/Ð
Cooling	Overload	3.7	1.1	87	17	14	46	45	HIGH	32/24	43/Ð
	Low load	1.0	0.8	22	2	1	1	24	LOW	18/15.5	Ð5/Ð
	Standard	3.3	0.6	93	0	54	0	70	HIGH	20/Ð	7/6
Heating	Overload	3.1	1.1	75	20	52	15	24	LOW	30.Ð	24/18
	Low load	2.0	0.2	90	Ð26	25	Ð25	90	HIGH	0	Ð20/(70%)

*4 poles are provided to this compressor.

The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.

Ð8 Ð

4. WIRING DIAGRAM

4-1. Indoor Unit

SWITCH PCB MCC-1428B

CN101 1 2 3

GRY

GRY

WHI

HEAT

EXCHANGER

SENSOR (TCJ)

FOR FLOAT SWITCH	1	2
(OPTION)
When you use float	1	2

switch you should cut J401

1	RAYSINFRAREDRECEIVE	INDICATIONAND PARTS

LOUVER MOTOR

1	2	3	CN402
CN100 1	2	3

	10 10		WHI	10 10
	9	9	BLU	9	9		POWER
			BLU			4
							SUPPLY
	8	8	BLU	8	8		CIRCUIT
	7	7		7	7
	6	6	BLUBLU	6	6		C02
	5	5	BLU	5	5
	4	4		4	4		DB01
	3	3	BLU	3	3
	2	2	BLU	2	2
	1	1	BLU	1	1		R01
	CN25			CN13			C01

BRW	1	1	5
RED	2	2
ORN	3	3
YEL	4	4
PNK	5	5
BLU	6	6	IC04		C15
	CN07
			R507
			R09		R21
			R22	FUSE
				250VAC
			SG01	F01	3
				T6.3A
			BLK	P04	CN30
					BLK

2 1

1 2	CN05	1 2	CN03		BLK			THERMO
J401			2	2				SENSOR
DC12V			1	1	BLK			(TA)
	IC03		2	2	BLK			HEAT
DC5V
					BLK
			1	1				EXCHANGER
			CN01					SENSOR
		R506						(TC)
CR502	CR501		1	1
					WHI 1		1	WHI
			2	2
			3	3		2	2
RY501			4	4	RED	3	3	RED
			5	5		4	4
	C501		CN10		BLK	5	5	BLK
MCC-1428A						6	6

R405	CR401
RY401

3	3	BRW	3	3	BLU
2	2		2	2
1	1	GRY	1	1	PUR
CN11		YEL			GRY
					FAN-MOTOR
					100ÓC

32 FOR DRAIN PUMP

(OPTION)

1

CN401

	CN31		CN23
WHI	RED	INDOOR	GRN&YEL
			INDOOR
2 3		TERMINAL
		BLOCK	UNIT

OUTDOOR

UNIT

SIMPLE CHECK POINTS FOR DIAGNOSING FAULTS

Check items		Diagnosis result
1	OPERATION	Check to see if OPERATION indicator goes on and off when the main switch
	indicator	or breaker is turned on.
2	Terminal	Check the power supply voltage between	1	- 2 (Refer to the name plate.)
	block	Chack the fluctuate voltage between 2 -	3	(DC15 to 60V)
3	Fuse	Check to see if the fuse blows out. (Check the varistor. : R22, R21)
	6.3A
4	DC 5V	Check the voltage at the No.8 pin on CN13 connector of the infrared receiver.
		(Check the transformer and the power supply circuit of the rated voltage.)
5	DC 12V	Check the voltage at the brown lead of the louver motor.
		(Check the transformer and the power supply circuit of the rated voltage.)

Color

Identification

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

GRN&YEL : GREEN& YELLOW

GRN : GREEN

PUR : PURPLE

Ð 9 Ð

4-2. Outdoor Unit (RAV-SM560AT-E)

Q200

DB01

REACTOR

THERMOSTAT

CONVERTER

IGBT MODULE

FOR

MODULE

COMPRESSOR

BLU

EW

BW

BRW

ORN

2

1

2

1 CN500

BZ

BY

BX

EV BV

EU

BU

+ ~

2

1

Ð

~ A E G

P10

P09

2

1

TE

P17 P18

P20

P19

P08

P07

CN600

1

1

2

2

1

1

TD

ELECTRONIC

CT

CN601 2

2

P23

P22

P21

STARTER

POWER

3

3

BLK

WHI

RED

RELAY

1

1

TO

P.C. BOARD

CN602

2

2

4

3

2

1

(MCC-813)

TS

3

2

1

Ð

+

C12

1

1

3

CN603 2

2

Ð

+

C13

3

3

CM

Ð

+

C14

RELAY

Q300

1

1

COMPRESSOR

CN701 2

2

3

3

COIL FOR

P06

BLK

4-WAY VALVE

F04

SURGE

FUSE

2

ABSORBER

T3. 15A

1

1

BLK

250V~

VARISTOR

2

2

YEL

3

3

RED

4

4

ORN PMV

FUSE

2

5

5

RED

T25A

F01

6

6

GRY

PULSE

250V~

CN703

MODULATING

VALVE

P14

P13

P02

P03 P01

CN301 5

4

3

2

1

3

2

1

CN300

P12

P11

WHI

ORN

BLK

5

4

3

2

1

3

2

1

PUR

2

1

TERMINAL OF COMPRESSOR

GRY

PNK

YEL

BLK WHI

RED

2

1

WHITE (S)

BLACK (C)

1

FM

1

2 3 L N

REACTOR

RED (R)

FAN MOTOR	TO	POWER	The sign in ( ) is displayed
	INDOOR	SUPPLY
			in the terminalcover
	UNIT	220 to 240
		50Hz

SIMPLE CHECK POINTS FOR DIAGNOSING FAULTS

	Check	Diagnosis result
	items
	1	TERMINAL BLOCK
		There is no supply voltage		Power supply and connecting
		(AC220 to 240V) between L - N , 1 - 2		cable check
		There is no voltage (DC15 to 25V) 2 - 3
		FUSE
	2	T25A 250V to fuse (F01) blown		Converter module (DB01) and
		T3.15A 250V to fuse (F04) blown		electrolytic capacitor (C12 to C14) check
				IGBT module (Q200) check
				Fan motor check
	3	ELECTROLYTIC CAPACITOR VOLTAGE (C12, C13, C14)
		DC320V not available between		T25A fuse (F01) check
		+ Ð terminal of electrolytic capacitor		P.C. board and converter
				module (DB01) check
		INVERTER OUTPUT (Inverter and compressor connector out of position)
	4	(Please confirm within six minutes after instructing in the drive.)
		Voltage between each line of inverter side		IGBT module and
		conector pins are not equal.		P.C. board check

Color Identification

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

		NOTE
CM
	: Compressor
PMV	: Pulse modulating valve
FM	: Fan motor
TE	: Heat exchanger Temp. Sensor
TD	: Discharge Temp. Sensor
TO	: Outdoor Temp. Sensor
TS	: Suction Temp. Sensor
IGBT	: Insulated Gate Bipolar Transistor
DB01	: Converter module
CT	: Curreut Transformer
Q300	: Fan motor driver module

Ð 10 Ð

4-3. Outdoor Unit (RAV-SM800AT-E)

THERMOSTAT						Compressor	CM
FOR
COMPRESSOR			CN604 2 2				TE
ORN
	2 2	CN500		1	1
ORN 1 1			CN605 2 2			GRN	TS
4-WAY VALVE COIL				1	1
3 3	3			3	3		TD
		CN700	CN600 2
1 1	1			1	1
FAN MOTOR	5 5		CN601 2 2				TO
				1	1
FM	4 4		Fan
	3 3 CN300
	2 2		circuit			BLU
	1 1	2		3 3
			CN302
	3 3			1 1		YEL
	2 2 CN301		F300
	1 1		FUSE	5 5		BLK
			T5A			WHI
				4	4
	6 6		CN800			BLU
				3 3
	5 5					RED
				2	2
PMV	4 4					PNK
		CN702		1	1
	3 3
	2 2		CN04	2 2
	1 1					ORN
				1 1
				5	5	BLK
		PHOTO COUPLER
				4	4	WHI
				3	3
			CN01 2 2			RED
				1	1

					T03	+
	RED		CN09			BU
					CT
						EU
	WHI		CN10			BV
						EV	IGBT
					T04
	BLK		CN11		CT	BW	module
						EW
					4	BX
		POWER SUPPLY CIRCUIT				BY
		(FOR P.C. BOARD)				BZ
		F04	2				Q200
		FUSE
		3.15A
						P20
			C13	3		P19	YEL
			C12			P18	BLU
			C11			P17
			C10	2	F02
					FUSE	G
					15A
3	3					E
		CN04				A	Converter
1	1					~
			POWER				module
						~
5	5		RELAY
						+	DB01
4	4	CN06	RY01		P10
3	3
							ORN
2	2	P.C. BOARD	R05		P11
1	1					REACTOR
		(MCC-1359)	R06		P13	2 2
2 2
		CN05			P12	1 1
1 1			T02			REACTOR
			CT		P09	2 2
5	5
					P08	1 1
4	4
					P15
3	3						BRN
2	2				P14
1	1	CN13

SUB	2	F01
P.C. BOARD		FUSE					F01	VARISTOR	SURGE
(MCC-1398)		T3.15A				2	FUSE
							25A		ABSORBER
	CN02	1 2 3		REACTOR			CN01	CN02	CN03
							RED	WHI	BLK
		1 2 3 GRY
		WHI	RED
		1		1 2 3 L N				TERMINAL OF COMPRESSOR
				TO	POWER		WHITE(S)		BLACK(C)	The sign in ( )
				INDOOR SUPPLY
				UNIT	220-240V					is displayed
					~50Hz					in the terminal

RED(R) cover

SIMPLE CHECK POINTS FOR DIAGNOSING FAULTS

	Check	Diagnosis result
	items
	1	TERMINAL BLOCK
		There is no supply voltage		Connecting cable check
		(AC220 to 240V) between L - N , 1 - 2
		There is no voltage (DC15 to 25V) 2 - 3
		FUSE
	2	25A fuse (F01) blown, 15A fuse (F02) blown		Converter module (DB01) and electrolytic
		3.15A fuse (F04) blown,		capacitor (C10 to C13) check IGBT
		T5A fuse (F300) blown (SUB P.C. board)		module (Q200) check, Fan motor check
		T3.15A fuse (F01) blown (SUB P.C. board)		SUB P.C. board check
	3	ELECTROLYTIC CAPACITOR VOLTAGE (C10, C11, C12, C13)
		DC320V not available between		25A fuse (F01) check
		+ terminal of electrolytic capacitor		P.C. board and coverter
				module (DB01) check
		INVERTER OUTPUT (CN09, CN10, CN11)
	4	(Please confirm within six minutes after instructing in the drive.)
		Voltage between each line of inverterside		IGBT module and
		conector pins are not equal.		P.C. board check

Color Identification

BLK	: BLACK	WHI : WHITE
BLU	: BLUE	BRN : BROWN
RED	: RED	ORN : ORANGE
GRY	: GRAY	YEL : YELLOW
PNK	: PINK	PUR : PURPLE
GRN	: GREEN

Ð 11 Ð

5. SPECIFICATION OF ELECTRICAL PARTS

5-1. Indoor Unit

No.	Parts name	Type	Specifications
1	Fan motor (for indoor)	AFP-220-50-4A	Output (Rated) 50 W, 220 Ð 240 V
2	Grille motor	MP35EA12	DC 12 V
3	Thermo. sensor (TA-sensor)	550 mm	10 kΩ at 25°C
4	Heat exchanger sensor (TC-sensor)	6 mm, 500 mm	10 kΩ at 25°C
5	Heat exchanger sensor (TCJ-sensor)	6 mm, 500 mm	10 kΩ at 25°C

5-2. Outdoor Unit (RAV-SM560AT-E)

No.	Parts name	Type	Specifications
1	Fan motor	ICF-140-43-1	Output (Rated) 40 W
2	Compressor	DA130A1F-23F	3 phase, 4P, 1100 W
3	Reactor	CH-57	1=10 mH, 16A
4	Outdoor temp. sensor (To-sensor)	Ñ	10 kΩ at 25°C
5	Heat exchanger sensor (Te-sensor)	Ñ	10 kΩ at 25°C
6	Suction temp. sensor (Ts-sensor)	Ñ	10 kΩ at 25°C
7	Discharge temp. sensor (Td-sensor)	Ñ	50 kΩ at 25°C
8	Fuse (Switching power (Protect))	Ñ	T3.15 A, AC 250 V
9	Fuse (Inverter, input (Current protect)	Ñ	25 A, AC 250 V
10	4-way valve solenoid coil	STF-0108G
11	Compressor thermo. (Protection)	US-622	ON : 90 ± 5°C, OFF : 125 ± 4°C

5-3. Outdoor Unit (RAV-SM800AT-E)

No.	Parts name	Type	Specifications
1	Fan motor	ICF-140-63-1	Output (Rated) 63 W, 220 Ð 240 V
2	Compressor	DA220A2F-20L	3 phase, 4P, 1600 W
3	Reactor	CH-47
4	Outdoor temp. sensor (To-sensor)	Ñ	10 kΩ at 25°C
5	Heat exchanger sensor (Te-sensor)	Ñ	10 kΩ at 25°C
6	Suction temp. sensor (Ts-sensor)	Ñ	10 kΩ at 25°C
7	Discharge temp. sensor (Td-sensor)	Ñ	50 kΩ at 25°C
8	Fuse (Switching power (Protect))	Ñ	T3.15 A, AC 250 V
9	Fuse (Inverter, input (Current protect)	Ñ	25 A, AC 250 V
10	4-way valve solenoid coil	DKV-M0ZS743B0
11	Compressor thermo. (Protection)	US-622	ON : 90 ± 5°C, OFF : 125 ± 4°C

Ð 12 Ð

6. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC (R410A) which does not damage the ozone layer.

The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time.

The next section describes the precautions for air conditioner using the new refrigerant. Conforming to contents of the next section together with the general cautions included in this manual, perform the correct and safe work.

6-1. Safety During Installation/Servicing

As R410AÕs pressure is about 1.6 times higher than that of R22, improper installation/servicing may cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out installation/ servicing safely while taking the following precautions into consideration.

(1)Never use refrigerant other than R410A in an air conditioner which is designed to operate with R410A.

If other refrigerant than R410A is mixed, pressure in the refrigeration cycle becomes abnormally high, and it may cause personal injury, etc. by a rupture.

(2)Confirm the used refrigerant name, and use tools and materials exclusive for the refrigerant R410A. The refrigerant name R410A is indicated on the visible place of the outdoor unit of the air conditioner using R410A as refrigerant. To prevent mischarging, the diameter of the service port differs from that of R22

(3)If a refrigeration gas leakage occurs during installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

(4)When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture of personal injury may be caused.

(5)After completion of installation work, check to make sure that there is no refrigeration gas leakage.

If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.

(6)When an air conditioning system charged with a large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, even when refrigerant leaks, its concentration does not exceed the marginal level.

If the refrigerant gas leakage occurs and its concentration exceeds the marginal level, an oxygen starvation accident may result.

(7)Be sure to carry out installation or removal according to the installation manual. Improper installation may cause refrigeration

trouble, water leakage, electric shock, fire, etc.

(8)Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician.

Improper repairÕs may result in water leakage, electric shock and fire, etc.

6-2. Refrigerant Piping Installation

6-2-1. Piping materials and joints used

For the refrigerant piping installation, copper pipes and joints are mainly used. Copper pipes and joints suitable for the refrigerant must be chosen and installed. Furthermore, it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants.

(1)Copper pipes

It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may become blocked with contaminants.

As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A are as shown in Table 6-2-1. Never use copper pipes thinner than 0.8 mm even when it is available on the market.

Ð 13 Ð

Table 6-2-1 Thicknesses of annealed copper pipes

			Thickness (mm)
Nominal diameter	Outer diameter (mm)	R410A		R22
1/4	6.35	0.80		0.80
3/8	9.52	0.80		0.80
1/2	12.70	0.80		0.80
5/8	15.88	1.00		1.00

(2)Joints

For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.

a)Flare joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 6-2-3 to 6-2-6 below.

b)Socket joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose diameter is larger than 20 mm.

Thicknesses of socket joints are as shown in Table 6-2-2.

Table 6-2-2 Minimum thicknesses of socket joints

	Nominal diameter	Reference outer diameter of	Minimum joint thickness
		copper pipe jointed (mm)	(mm)
	1/4	6.35	0.50
	3/8	9.52	0.60
	1/2	12.70	0.70
	5/8	15.88	0.80

6-2-1. Processing of piping materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not enter the pipe interior, that no other oil other than lubricating oils used in the installed air conditioner is used, and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any other cover.

(1)Flare Processing procedures and precautions

a)Cutting the pipe

By means of a pipe cutter, slowly cut the pipe so that it is not deformed.

b)Removing burrs and chips

If the flared section has chips or burrs, refrigerant leakage may occur. Carefully remove all burrs and clean the cut surface before installation.

c)Insertion of flare nut

d)Flare processing

Make certain that a clamp bar and copper pipe have been cleaned.

By means of the clamp bar, perform the flare processing correctly.

Use either a flare tool for R410A or conventional flare tool.

Flare processing dimensions differ according to the type of flare tool. When using a conventional flare tool, be sure to secure Òdimension AÓ by using a gauge for size adjustment.

D

A

Fig. 6-2-1 Flare processing dimensions

Ð 14 Ð

Table 6-2-3 Dimensions related to flare processing for R410A

	Outer							A (mm)
Nominal		Thickness
	diameter		Flare tool for R410A						Conventional flare tool
diameter		(mm)
	(mm)
			clutch type					Clutch type				Wing nut type
1/4	6.35	0.8		0 to 0.5					1.0 to 1.5			1.5 to 2.0
3/8	9.52	0.8		0 to 0.5					1.0 to 1.5			1.5 to 2.0
1/2	12.70	0.8		0 to 0.5					1.0 to 1.5			2.0 to 2.5
5/8	15.88	1.0		0 to 0.5					1.0 to 1.5			2.0 to 2.5
	Table 6-2-4 Dimensions related to flare processing for R22
	Outer							A (mm)
Nominal		Thickness
	diameter		Flare tool for R22						Conventional flare tool
diameter		(mm)
	(mm)
			clutch type					Clutch type				Wing nut type
1/4	6.35	0.8		0 to 0.5					0.5 to 1.0			1.0 to 1.5
3/8	9.52	0.8		0 to 0.5					0.5 to 1.0			1.0 to 1.5
1/2	12.70	0.8		0 to 0.5					0.5 to 1.0			1.5 to 2.0
5/8	15.88	1.0		0 to 0.5					0.5 to 1.0			1.5 to 2.0
	Table 6-2-5 Flare and flare nut dimensions for R410A
Nominal	Outer	Thickness			Dimension (mm)							Flare nut
	diameter											width
diameter		(mm)	A		B			C		D
	(mm)											(mm)
1/4	6.35	0.8	9.1		9.2		6.5			13	17
3/8	9.52	0.8	13.2		13.5		9.7			20	22
1/2	12.70	0.8	16.6		16.0		12.9			23	26
5/8	15.88	1.0	19.7		19.0		16.0			25	29
	Table 6-2-6 Flare and flare nut dimensions for R22
Nominal	Outer	Thickness			Dimension (mm)							Flare nut
	diameter											width
diameter		(mm)	A		B			C		D
	(mm)											(mm)
1/4	6.35	0.8	9.0		9.2		6.5			13	17
3/8	9.52	0.8	13.0		13.5		9.7			20	22
1/2	12.70	0.8	16.2		16.0		12.9			20	24
5/8	15.88	1.0	19.4		19.0		16.0			23	27
3/4	19.05	1.0	23.3		24.0		19.2			34	36

Ð 15 Ð

° 46 °to 45

43
°
	to 45
	°

Fig. 6-2-2 Relations between flare nut and flare seal surface

(2)Flare connecting procedures and precautions

a)Make sure that the flare and union portions do not have any scar or dust, etc.

b)Correctly align the processed flare surface with the union axis.

c)Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.

When it is strong, the flare nut may crack and may be made non-removable. When choosing the tightening torque, comply with values designated by manufacturers. Table 6-2-7 shows reference values.

Note:

When applying oil to the flare surface, be sure to use oil designated by the manufacturer. If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 6-2-7 Tightening torque of flare for R410A [Reference values]

	Nominal	Outer diameter	Tightening torque	Tightening torque of torque
				wrenches available on the market
	diameter	(mm)	N·m (kgf·cm)
				N·m (kgf·m)
	1/4	6.35	14 to 18 (140 to 180)	16 (160), 18 (180)
	3/8	9.52	33 to 42 (330 to 420)	42 (420)
	1/2	12.70	50 to 62 (500 to 620)	55 (550)
	5/8	15.88	63 to 77 (630 to 770)	65 (650)

Ð 16 Ð

6-3. Tools

6-3-1. Required tools

The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For 12.70 copper pipe) of the refrigerant piping are lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

(1)Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

(2)Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

(3)Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

			R410A air conditioner		Conventional air
			installation		conditioner installation
No.	Used tool	Usage
			Existence of	Whether	Whether new equipment
			new equipment	conventional	can be used with
			for R410A	equipment can	conventional refrigerant
				be used
1	Flare tool	Pipe flaring	Yes	*(Note 1)
2	Copper pipe gauge	Flaring by
	for adjusting projection	conventional flare	Yes	*(Note 1)	*(Note 1)
	margin	tool
3	Torque wrench	Connection of	Yes
		flare nut
4	Gauge manifold	Evacuating,
		refrigerant charge,	Yes
5	Charge hose
		run check, etc.
6	Vacuum pump adapter	Vacuum evacuating	Yes
7	Electronic balance for	Refrigerant charge	Yes
	refrigerant charging
8	Refrigerant cylinder	Refrigerant charge	Yes
9	Leakage detector	Gas leakage check	Yes
!	Charging cylinder	Refrigerant charge	(Note 2)

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2) Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as

the general tools.					Hole core drill ( 65)
(1)	Vacuum pump	(4)	Reamer	(9)
	Use vacuum pump by	(5)	Pipe bender	(10)	Hexagon wrench
	attaching vacuum pump adapter.	(6)	Level vial		(Opposite side 4 mm)
(2)	Torque wrench	(7)	Screwdriver (+, Ð)	(11)	Tape measure
(3)	Pipe cutter	(8)	Spanner of Monkey wrench	(12)	Metal saw
Also prepare the following equipments for other installation method and run check.
(1)	Clamp meter	(3)	Insulation resistance tester
(2)	Thermometer	(4)	Electroscope
			Ð 17 Ð

6-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps.

Recover the refrigerant, and check no refrigerant remains in the equipment.

Connect the charge hose to packed valve service port at the outdoor unitÕs gas side.

Connect the charge hose of the vacuum pump adapter.

Open fully both packed valves at liquid and gas sides.

When the compound gaugeÕs pointer has indicated -0.1 Mpa (-76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pumpÕs power switch.

Keep the status as it is for 1 to 2 minutes, and ensure that the compound gaugeÕs pointer does not return.

Set the refrigerant cylinder to the electronic balance, connect the connecting hose to the cylinder and the connecting port of the electronic balance, and charge liquid refrigerant.

Place the handle of the gauge manifold Low in	(For refrigerant charging, see the figure below.)
the fully opened position, and turn on the vacuum
pumpÕs power switch. Then, evacuating the
refrigerant in the cycle.

1 Never charge refrigerant exceeding the specified amount.

2 If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.

3Do not carry out additional charging.

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and may cause a rupture or personal injury.

(INDOOR unit)

(Liquid side)

(OUTDOOR unit)

Opened

(Gas side)

Refrigerant cylinder (With siphon pipe)

Check valve

Closed

Open/Close valve for charging

Service port

Electronic balance for refrigerant charging

Fig. 6-4-1 Configuration of refrigerant charging

Ð 18 Ð

1 Be sure to make setting so that liquid can be charged.

2 When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.

It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.

[Cylinder with siphon]	[Cylinder without siphon]
Gauge manifold	Gauge manifold
OUTDOOR unit	OUTDOOR unit

Refrigerant

cylinder

Electronic

balance

cylinder Refrigerant

Electronic

balance

Siphon

R410A refrigerant is HFC mixed refrigerant. Therefore, if it is charged with gas, the composition of the charged refrigerant changes and the characteristics of the equipment varies.

Fig. 6-4-2

6-5. Brazing of Pipes

6-5-1. Materials for brazing

(1)Silver brazing filler

Silver brazing filler is an alloy mainly composed of silver and copper. It is used to join iron, copper or copper alloy, and is relatively expensive though it excels in solderability.

(2)Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used to join copper or copper alloy.

(3)Low temperature brazing filler

Low temperature brazing filler is generally called solder, and is an alloy of tin and lead. Since it is weak in adhesive strength, do not use it for refrigerant pipes.

1Phosphor bronze brazing filler tends to react with sulfur and produce a fragile compound water solution, which may cause a gas leakage. Therefore, use any other type of brazing filler at a hot spring resort, etc., and coat the surface with a paint.

2When performing brazing again at time of servicing, use the same type of brazing filler.

6-5-2. Flux

(1)Reason why flux is necessary

•By removing the oxide film and any foreign matter on the metal surface, it assists the flow of brazing filler.

•In the brazing process, it prevents the metal surface from being oxidized.

•By reducing the brazing fillerÕs surface tension, the brazing filler adheres better to the treated metal.

Ð 19 Ð

(2)Characteristics required for flux

•Activated temperature of flux coincides with the brazing temperature.

•Due to a wide effective temperature range, flux is hard to carbonize.

•It is easy to remove slag after brazing.

•The corrosive action to the treated metal and brazing filler is minimum.

•It excels in coating performance and is harmless to the human body.

As the flux works in a complicated manner as described above, it is necessary to select an adequate type of flux according to the type and shape of treated metal, type of brazing filler and brazing method, etc.

(3)Types of flux

•Noncorrosive flux

Generally, it is a compound of borax and boric acid.

It is effective in case where the brazing temperature is higher than 800°C.

•Activated flux

Most of fluxes generally used for silver brazing are this type.

It features an increased oxide film removing capability due to the addition of compounds such as potassium fluoride, potassium chloride and sodium fluoride to the borax-boric acid compound.

(4)Piping materials for brazing and used brazing filler/flux

Piping	Used brazing	Used
material	filler	flux
Copper - Copper	Phosphor copper	Do not use
Copper - Iron	Silver	Paste flux
Iron - Iron	Silver	Vapor flux

1 Do not enter flux into the refrigeration cycle.

2 When chlorine contained in the flux remains within the pipe, the lubricating oil deteriorates. Therefore, use a flux which does not contain chloring.

3When adding water to the flux, use water which does not contain chlorine (e.g. distilled water or ion-exchange water).

4 Remove the flux after brazing.

6-5-3. Brazing

As brazing work requires sophisticated techniques, experiences based upon a theoretical knowledge, it must be performed by a person qualified.

In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry Nitrogen gas (N2) flow.

Never use gas other than Nitrogen gas.

(1)Brazing method to prevent oxidation

1 Attach a reducing valve and a flow-meter to the Nitrogen gas cylinder.

2Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.

3Apply a seal into the clearance between the piping material and inserted copper pipe for

Nitrogen in order to prevent backflow of the Nitrogen gas.

4When the Nitrogen gas is flowing, be sure to keep the piping end open.

5 Adjust the flow rate of Nitrogen gas so that it is lower than 0.05 m3/Hr or 0.02 Mpa (0.2 kgf/ cm2) by means of the reducing valve.

6After performing the steps above, keep the Nitrogen gas flowing until the pipe cools down to a certain extent (temperature at which pipes

are touchable with hands).

7 Remove the flux completely after brazing.

M Flow meter

Stop valve

Nitrogen gas cylinder

From Nitrogen cylinder

Pipe Nitrogen gas

Rubber plug

Fig. 6-5-1 Prevention of oxidation during brazing

Ð 20 Ð

7. CONTROL BLOCK DIAGRAM

Indoor Unit Control Panel

M.C.U.

8 MHz

Heat Exchanger Sensor (TCJ)

Functions

•

Louver Control

Heat Exchanger Sensor (TC)

• 3-minute Delay at Restart for Compressor

Temperature Sensor

•

Motor Revolution Control

Infrared Rays Signal Receiver

•

Processing

(Temperature Processing)

Initiallizing Circuit

Infrared

•

Timer

Rays

Clock Frequence

36.7 kHz

Oscillator Circuit

•

Drain Pump ON/OFF

•

Serial Signal Communication

Power Supply

Louver ON/OFF Signal

Remote

Circuit

Control

Louver Driver

Noise Filter

Serial Signal

Transmitter/

Relay

Receiver

RY401

From Outdoor Unit

Serial Signal Communication

Hi POWER

Display

FILTER Sign

Display

PRE DEF.

Sign Display

TIMER

Display

OPERATION

Display

Indoor Fan

Motor

Louver Motor

Float

Switch

Drain

Pump

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

Ð 21 Ð

8. OPERATION DESCRIPTION

8-1. When power supply is reset

(1)Distinction of outdoor units

When the power supply is reset, the outdoors are distinguished, and control is exchanged according to the distinguished result.

(2)Setting of the indoor fan speed

Based on EEPROM data, rspeed of the indoor fan is selected.

Remarks: Air speed

8-2. Operation mode selection

(1)Based on the operation mode selecting command from the remote control, the operation mode is selected.

		Table 8-2-1
	Remote control	Outline of control
	command
	STOP	Air conditioner stops.
	FAN	Fan operation
	COOL	Cooling operation
	DRY	Dry operation
	HEAT	Heating operation
	AUTO	Automatic operation

(2)Automatic Operation

•The air conditioner selects and operates in one of the operating modes of cooling, heating or fan only, depending on the room temperature.

•If the AUTO mode is uncomfortable, you can select the desired conditions manually.

8-3. Air volume control

(1)Operation with [HIGH (H)], [MED (M)], [LOW (L)], or [AUTO] mode is performed by the command from the remote control.

(2)When [FAN] button is set to AUTO, the indoor fan motor operates as shown in Fig. 8-3-1, Fig. 8-3-2 and Table 8-3-1.

<COOL>

	temp.)		°C
		+3
	(Preset		M+
		+2.5
		*1
	−	+2
		*1
	temp.)
		*1
		+1.5
	(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 LÐ.

Fig. 8-3-1

		Table 8-2-2
Room temperature in operation			Operating condition
The set temperature +1¡C or higher	Cooling		Performs the cooling operation at a temperature 1¡C
(in case that the room is hot)	operation		higher than the setting.
The set temperature Ð1¡C to +1¡C	Fan only		Performs the fan only operation (low speed) while
	operation		monitoring the room temperature. When the room
			temperature changes, the air conditioner will select the
			cooling or heating mode.
The set temperature Ð1¡C or lower	Heating		Performs the heating operation at a temperature 1¡C
(in case that the room is cold)	operation		lower than the setting.

Ð 22 Ð

<HEAT>

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

NOTE :

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

8-4. Cool air discharge preventive control

In heating operation, the indoor heat exchanger restricts revolving speed of the fan motor to prevent a cold draft. The upper limit of the revolving speed is shown in Fig. 8-4-1 and Table 8-4-1.

				Manual
			AUTO	(One of
	46	34		5 steps)
	45	33
			*4	L−H
	33	21
				(Up to
	32	20
				setting
			SUL*3	speed)
*2	A+4	A+4	SUL*1
	A−8	A−8
			Stop
	*6	*5

Fig. 8-3-2

Table 8-3-1

		RAV-SM560XT-E			RAV-SM800XT-E
MODEL
		Motor speed		Air flow level	Motor speed	Air flow level
		(rpm)		(m3/h)	(rpm)	(m3/h)
Cooling	HIGH	1060		800	1190	900
and	MED	950		690	1010	750
Fan only	LOW	800		580	850	650
	HIGH	1120		830	1300	980
Heating	MED	970		730	1070	800
	LOW	820		600	860	650
		LOW+	=	LOW+MED
				2
		MED+	= MED+HIGH
				2

NOTES :

*1: The fan stops for 2 minutes after thermostat-OFF.

*2: A is 24°C when the preset temperature is 24°C or more and A is the preset temperature when it is under 24°C.

*3: SUL means Super Ultra Low.

*4: Calculated from difference in motor speed between SUL and HIGH.

Fig. 8-4-1 Cold draft preventing control

*5 and *6:

Table 8-4-1

Fan	*5		*6
speed		Starting period		Stabilized period
AUTO	•	Up until 12 minutes	•	From 12 to 25 minutes
		passed after starting		passed after starting
	•	the unit		the unit and room
		From 12 to 25 minutes		temperature is
		passed after starting		between preset
		the unit and room		temperature and 3°C
		temperature is 3°C		lower than preset
		lower than preset		temperature
		temperature	•	25 minutes or more
				passed after starting
				the unit
Manual	•	Room temperature	•	Room temperature
(L Ð H)		< Preset temperature		Preset temperature
		Ð4°C		Ð3.5°C

Ð 23 Ð

8-5. Freeze preventive control (Low temperature release)

The cooling operation (including Dry operation) is performed as follows based on the detected temperature of Tc sensor or Tcj sensor.

When [J] zone is detected for T1 minutes (Following figure), the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 2 minutes while operation is performed in [J] zone.

T1

Normal

1 minute

In [K] zone, time counting is interrupted and the operation is held.

When [I] zone is detected, the timer is cleared and the operation returns to the normal operation.

(°C)
7		I	A
6			K
5			J

Fig. 8-5-1

In heating operation, the freeze-preventive control works if 4-way valve is not exchanged and the condition is satisfied.

Remarks:

Tcj : Indoor heat exchanger sensor temperature

8-6. High-temp release control

The heating operation is performed as follows based on the detected temperature of Tc sensor.

•When [M] zone is detected, the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [M] zone.

•In [N] zone, the commanded frequency is held.

•When [L] zone is detected, the commanded frequency is returned to the original value by approx. 6Hz every 60 seconds.

8-7. 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.

8-8. Filter sign display

(1)The operation time of the indoor fan is calculated, the filter lamp (Orange) on the display part of the main unit goes on when the specified time (240H) has passed. When a wired remote controller is connected, the filter reset signal is sent to the remote controller, and also it is displayed on LCD of the wired remote control.

(2)When the filter reset signal has been received from the wired remote control after [FILTER] lamp has gone on or when the filter check button (Temporary button) is pushed, time of the calculation timer is cleared. In this case, the measurement time is reset if the specified time has passed, and display on LCD and the display on the main unit disappear.

Remarks:

[FILTER] goes on

Tc (°C)			M
55 A
			N
52

48 B

L

Fig. 8-6-1

Ð 24 Ð

8-9. Auto Restart Function

The indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with the set operating conditions in the event of power supply being accidentally shut down. The operation will resume without warning three minutes after power is restored.

This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

When the unit is on standby (Not operating)

8-9-1. How to set auto restart function

To set the auto restart function, proceed as follows: The power supply to the unit must be on; the function will not set if the power is off.

Push the [TEMPORARY] button located in the center of the front panel continuously for three seconds. The unit receives the signal and beeps three times. The unit then restarts operating automatically in the event of power supply being accidentally shut down.

Operation

Push [TEMPORARY] button for more than three seconds.

	0
Hi POWER FILTER PRE.D	3S

TEMPORARY button

When the unit is in operation

Operation

Push [TEMPORARY] button for more than three seconds.

	0
Hi POWER FILTER PRE.D	3S

TEMPORARY button

		Motions
The unit is on standby.
→
The unit starts to operate.		The green lamp is on.
→	After approx. three seconds,
The unit beeps three times		The lamp changes from
and continues to operate.		green to orange.

If the unit is not required to operate at this time, push [TEMPORARY] button once more or use the remote control to turn it off.

		Motions
The unit is in operation.		The green lamp is on.
→
The unit stops operating.		The green lamp is turned off.
→	After approx. three seconds,

The unit beeps three times.

If the unit is required to operate at this time, push [TEMPORARY] button once more or use the remote control to turn it on.

•	While this function is being set, if the unit is in	• While the filter check lamp is on, the
•	operation, the orange lamp is on.	TEMPORARY button has the function of filter
	This function can not be set if the timer operation	reset button.
	has been selected.

•When the unit is turned on by this function, the louver will not swing even though it was swinging automatically before shutting down.

Ð 25 Ð