Toshiba RAS-12KSX-1 User manual

FILE NO. SVM-08029
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-12SKSX-1 / RAS-12SASX-1
April, 2008

-1-
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
3. WIRING DIAGRAM
4. SPECIFICATION OF ELECTRICAL PARTS
5. REFRIGERATION CYCLE DIAGRAM
6. CONTROL BLOCK DIAGRAM
2-2 Outdoor Unit
FILE NO. SVM-08029
7. OPERATION DESCRIPTION
7-2 Outline of Air Conditioner Control
7-3 Description of Operation Mode
7-4 Low-Temperature Limit Control
7-7 Auto Restart Function
7-6 Filter Check Lamp
7-5 ECO Operation
7-1 Remote Control
8. INSTALLATION PROCEDURE
8-1 Safety Cautions
8-2 Installation Diagram of Indoor and Outdoor Units
8-3 Installation
8-4 Indoor Unit
8-5 Outdoor Unit
8-6 How to Set Remote Control Selector Switch
8-7 Others
9. TROUBLESHOOTING CHART
9-1 Troubleshooting Procedure
9-2 Basic Check Items
9-3 Primary Judgement
9-4 Self-Diagnosis by Remote Control (Check Code)
9-5 Troubleshooting Flowcharts
9-6 Troubleshooting for Remote Control (Including the Indoor P.C. Board)
10. HOW TO REPLACE THE MAIN PARTS
10-1 Indoor Unit
10-2 Outdoor Unit
11. EXPLODED VIEWS AND PARTS LIST
11-3 Outdoor Unit
11-1 Indoor Unit (E-Parts Assy)
11-2Indoor Unit
4-2 Outdoor Unit
4-1 Indoor Unit

– 2–
MODEL
RAS-12SKSX-1 / RAS-12SASX-1
ITEM
Capacity 220V
240 V
kW
3.58 3.58
Phase 1Æ
Power source V220 -240
Hz 50
Power consumption kW 1.27 1.31
Power factor %9694
Running Indoor A 0.15
current Outdoor A5.85 5.65
Starting current A23
Moisture removal lit/h 2.0
Noise Indoor (H/M/L) dB
Outdoor (220 -240 V) dB 4849
Refrigerant Name of refrigerant R22
Rated amount kg 0.70
Refrigerant control Capillary tube
Gas side size mm Æ12.7
Connection type Flare connection
Liquid side size mm Æ6.35
Interconnection Connection type Flare connection
pipe Maximum length
(One way)
Maximum height
difference
INDOOR UNIT RAS-12SKSX-1
Height mm 275
Dimensions Width mm 790
Depth mm 205
Net weight kg 9
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 590
Air-flow volume Medium fan m3/h 470
Low fan m3/h 410
Fan motor output W20
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-12SASX-1
Height mm 530
Dimensions Width mm 660
Depth mm240
Net weight kg 27
Condenser type Finned tube
Outdoor fan type Propeller fan
Air-flow volume m3/h 1590 1710
Fan motor output W
Compressor Model QK222PCB
Output W 1100
Safety device Fuse, Overload relay
Louver type Automatic louver
Usable outdoor temperature range °C21 ~ 43
m
m
6
30
FILE NO. SVM-08029
1. SPECIFICATIONS
44/38/33
15*2
10*1

-3 -
FILE NO. SVM-08029
Note : 1
Capacity is based on the following temperature conditions.
·
(WB) 24°C
Note : 2
•Charge refrigerant according to the table below.
Refrigerant RAS-12SKSX-1 / RAS-12SASX-1
*1 No need to charge 10m or less
extra refrigerant
*2 Need to charge Over 10m up to 15m (20g/m)
extra refrigerant
(DB) 27°C
(WB) 19°C
Outdoor unit inlet air temperture (DB) 35°C
Indoor unit inlet air temperture
Cooling
JIS C9612
Temperature
Condition

190
160.5 160.5 150
215
235 235
215
275
84.5 84.5
40 40
84.5 150 84.5
45
193480
Hanger
Installation plate outline
Hanger
Center line
Hanger
621
48
63
7
205
Knock out system
Front panel
Knock out system
48
763
Air inlet
Air filter
Heat exchanger
275
2. CONSTRUCTION VIEWS
2-1. Indoor Unit
Connecting pipe (0.35m) 6.35mm)(Flare
Installation plate hanger
Drain hose (0.50m)
Connecting pipe (0.40m)
Installation plate hanger
(Flare 12.7mm)
116
790
62 69
49
170 or more
170 or more
65 or more
Minimum
distance
towall
Minimum
distance
towall
Minimum
distance
to ceiling
FILE NO. SVM-08029
Wireless remote control
54 16
135
Remote controller holder
23
113
60
-4-

C
L
C
L
FILE NO. SVM-08029
2-2. Outdoor Unit
-5-
100
600

− 6−
FILE NO. SVM-08029
Regulator
circuit
R21 R22
SG01
DSA
F01
T6.3 A
250 VAC
CN01
CN03
RY01
C01
4
3
CN04
IC03
R46
R47
D38
CR03
R48
C58
DC 12 V
DC 5 V
MCC-920
C50
DB50
+
CN07
CN11
CN10
YEL
GRY
BRW
WHI
BLK
RED
Louver motor
Indoor FAN motor
1
1
2
2
4
5
3
1
2
4
5
3
1
2
3
1
2
3
1
2
4
5
3
1
2
4
5
3
1
2
1
3
5
1
3
5
1
1
3
3
1
1
3
3
2
5
3
1
5
3
1
22
44
6 6
150 C
C15
L01
BLK
P04
TRANS (TT-10)
RED
WHI BLU
GRY
CN05 CN06
1
2
1
2
1
2
1
2
WHI
YEL
YEL
YEL
YEL
21
4
3
PNK
TEMP FUSE
220-240V 50Hz
GRN&YEL
BLU (N)
BRW (L)
Heat Exchanger
Sensor (TC)
Thermo Sensor (TA)
73 C
Single Phase
PNK
CN31
WHI
CN14
CN25
BLU
Infrared rays receiver
and indication parts.
Power Cord
BLU BLU BLU BLU BLU BLU BLU BLU BLU
12
6
587 911
10
143
2
6
58
7911 10
1432
6
58
7911 10
1432
6
58
79 11 10
143
2
BLK
WHI
GRN&YEL
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK 1(L) 2(N) CHASSIS
BLK BLK RED
RED
CAPACITOR
FAN MOTOR
COMPRESSOR
PNK
WHI
WHI
RED
CAPACITOR
GRN&YEL
BLU (N)
BRW (L)
3. WIRING DIAGRAM
POWER SUPPLY
(From Power Cord)
1Ø 220-240V ~ 50Hz
POWER CORD
55
33
11
6
4
22
4
6
YEL
YEL
YEL
YEL
WHI
BRW
YEL
GRY
RED
WHI
BLK
5
CN10
1
3
55
3
1
CN11
22 1
33
1
4
5
4
3
2
11
2
3
4
5
3
CN07
2
11
2
3
4
5
Louver motor
FAN motor
CN10
WHI
11
1110
10
BLU BLU
9
9
8
8
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
CN14
7
6
5
4
3
2
1
1234567
CN10
Infrared rays receiver
and indication parts.
CN03
CN01
2
1
2
1
1
2
1
2
Thermo Sensor(TA)
Heat Exchanger
Sensor(TC)
C07
BLK
WHI
2
1
+
C27
Switching Power
DC 12 V
DC 5 V
GRN&YEL
WP-018
DB01
BLK
P04
RY01
34
SG01
DSA
R63R62
F01
6.3 A
250 VAC
L01
C25 C26
21
34
AC Motor
Supply
Voltage
Regulator
IC03
12V
MCU
4
31
2
R64
GRN&YEL
Heat Exchanger
BRW
BLU (N)
GRN&YEL
CN31
11
1110
10
9
9
8
8
7
6
5
4
3
2
1
1234567
INDOOR
OUTDOOR
1
12
2
CN04
PNK
TEMP FUSE
73°C
PNK
OUTDOOR
TERMINAL
BLOCK 1(L) 2(N) CHASSIS
BLK BLK RED
RED
CAPACITOR
FAN MOTOR
COMPRESSOR
PNK
WHI
WHI
RED
CAPACITOR
OVERLOAD RELAY
BLK
INDOOR
TERMINAL
BLOCK

-7-
4. SPECIFICATION OF ELECTRICAL PARTS
4-1. Indoor Unit
4-2. Outdoor Unit
FILE NO. SVM-08029
No. Parts name Type Specifications
1Fan motor (for indoor) AFS- 220-20-4AR AC Motor with 145 C thermo fuse
2Thermo sensor (TA-sensor) 10k at 25 C
3Transformer
4Microcontroller unit (IC30) TMP87CM40ANG
5 Heat exchanger sensor 10k at 25 C
(TC-sensor)
6Line filter (L01) *SS11V-06270 27mH, 600mA
7Bridge rectifier (DB01) DB105G 1.0A, 600 V
8Capacitor (C27) EKMH401VSN470MP20S 47mF, 400 V
9Fuse (F01) BET6.3A T6.3A, 250VAC
10 Varistor (R62, R63)SR561K14DL 560 V
11Louver motor
MP24Z3T 12VDC
12Relay (Comp., RY01)
G4A-1A
Rating 25A/AC250V
W
°
°
°
W
ST-001
No. Parts name Type Specifications
Output (Rated) 990 W, 2 poles, 1 phase, 220 -240 V, 50Hz
1Compressor QK222PCB Winding resistance (W)C-R C-S
(at 25 C) 2.67 3.92
Output (Rated) 30 W, 6 poles, 1 phase, 220 -240 V, 50Hz
2Fan motor (for outdoor) Winding resistance (W)Red-BlackWhite-Black
(at 20 C) 237 380
3Running capacitor DS451155NPQB AC 450 V, 1.5µ
°
°
4Running capacitor RS44B356U0125S AC 440 V, 35 F
(for compressor) m
WLF-240-30A
F
5Overload relay LAAO00A U/T : 9.0A (80°C), Open : 135±5°C, Close : 75±11°C

−8−
Note
· Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor)
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
Standard 0.54 10.5High 27/19 35/24
Cooling Overload 0.62 17.0 High
32/23
43/26
Low temperature 0.482.0 Low21/15 21/15
Standard
pressure
P
(MPaG)
Surface temp. of heat
exchanger interchanging
pipe
T1
(°C)
Fan speed
(indoor)
50Hz
Heat exchanger
Indoor unit
Cross flow fan
Cooling
Cooling Compressor
Heat exchanger
Propeller fan
Outdoor unit
Capillary tube
Æ1.7 x 800
QK222PCB
Cooling Mark ( ) means check points of Gas Leak.
O.D.:12.7 mm O.D.:6.35 mm
Cooling
Packed valve
(Æ12.7)
Packed valve
(Æ6.35)
0.39 m
(Connecting pipe)
Æ12.7
0.49 m
(Connecting pipe)
Æ6.35
T1
P
Refrigerant
R22 : 0.70 kg.
FILE NO. SVM-08029
5. REFRIGERATION CYCLE DIAGRAM
l

−9−
6. CONTROL BLOCK DIAGRAM
FILE NO. SVM-08029
REMOTE CONTROL
Operation ( )Operation Mode Selection
Remote Control
Operation (START/STOP)
AUTO, COOL, DRY, AUTO FAN
Temperature Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver Auto Swing
Louver Direction Setting
ECO
TIMER 1.3.5.9H
Infrared Rays
Heat Exchange sensor
Main Unit Control Panel M.C.U.
Functions Operation
Display
Timer
Display
Auto Fan
Sign Display
Display
Indoor Fan
Motor
Louver
Motor
Louver
ON/OFF
Signal
Compressor
ON/OFF
Signal
Power Supply
Circuit
Noise Filter Relay Driver, Louver Driver
Relay
RY01
220-240 V~, 50Hz
Compressor, Outdoor Fan Motor
Initiallizing Circuit
Clock Frequency
Oscillator Circuit
•Louver Control
•3-minutes Delay at Restart
for Compressor
•Processing
(Temperature Processing)
•Motor Revolution Control
•Timer
Thermo. Sensor
Infrared Rays Signal Reciver
Filter Sign