Toshiba RAS-18SKPX User manual

Revised May, 2008
FILE NO. SVM-08032-1
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
24 Class18 Class
RAS-18SKPX / RAS-18S2AX
RAS-24SKPX / RAS-24S2AX
RAS-18SKPX-V / RAS-18S2AX-V
RAS-18SKP-E / RAS-18S2A-E
RAS-24SKP-E / RAS-24S2A-E

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FILE NO. SVM-08032
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTIONVIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (18Class)
2-3 Outdoor Unit (24Class)
3. WIRING DIAGRAM
3-1
3-2
RAS-18SKPX / RAS-18S2AX, RAS-18SKPX-V / RAS-18S2AX-V,
RAS-24SKPX / RAS-24S2AX, RAS-24SKP-E / RAS-24S2A-E
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit (RAS-18SKPX, RAS-18SKPX-V, RAS-18SKP-E)
4-2
4-3 Outdoor Unit (RAS-18S2AX, RAS-18S2AX-V, RAS-18S2A-E)
4-4 Indoor Unit (RAS-24SKPX, RAS-24SKP-E)
Outdoor Unit (RAS-24S2AX, RAS-24S2A-E)
5. REFRIGERATION CYCLE DIAGRAM
5-1
5-2
RAS-18SKPX / RAS-18S2AX, RAS-18SKPX-V / RAS-18S2AX-V
RAS-24SKPX / RAS-24S2AX, RAS-24SKP-E / RAS-24S2A-E
6. CONTROL BLOCK DIAGRAM
7. OPERATION DESCRIPTION
7-2Outline of Air Conditioner Control
7-3Description of Operation Circuit
7-4Description of Safety and Reliability Prevention Function
7-5One-Touch Operation
7-6Hi POWER Operation
7-7QUIET Operation
7-8ECO Operation
7-9COMFORT SLEEP Operation
7-10 FILTER Check lamp
7-1 Remote control
7-11 Auto Restart Function
7-12 Self-Cleaning Operation
RAS-18SKP-E / RAS-18S2A-E
RAS-18SKP-E / RAS-18S2A-E

−2 −
FILE NO. SVM-08032
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 Test Operation
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)
9-5Troubleshooting for Indoor Unit
9-6Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire)
9-7Troubleshooting for P.C. Board
9-8Troubleshooting for Remote Control
10. PARTS REPLACEMENT
10-1 Indoor Unit
10-2
10-3 Outdoor Unit (RAS-18S2AX, RAS-18S2AX-V, RAS-18S2A-E) Outdoor Unit (RAS-24S2AX, RAS-24S2A-E)
11. EXPLODEDVIEWS AND PARTS LIST
11-1 Indoor Unit (E - Parts Assy)
11-2 Indoor Unit
11-3
11-4
Outdoor Unit (RAS-18S2AX, RAS-18S2AX-V, RAS-18S2A-E)
Outdoor Unit (RAS-24S2AX, RAS-24S2A-E)

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FILE NO. SVM-08032
MODEL RAS-18SKPX / RAS-18S2AX RAS-18SKPX-V
RAS-18SKP-E / RAS-18S2A-E RAS-18S2AX-V
ITEM Cooling Cooling
Capacity kW 220 V 240 V 220 V 240 V
5.20 5.25 5.20 5.25
Phase 1∅
Power source V220 – 240
Hz 50
Power consumption W1860 194018601940
Power factor %97 91 9791
Running current A0.3/8.80 0.3/9.00 0.3/8.80 0.3/9.00
Indoor/Outdoor
Starting current A42
Moisture removal lit/h 2
Noise Indoor (H/M/L) dB
Outdoor (220 – 240 V) dB 51 52 51 52
Refrigerant Name of refrigerant R22
Rated amount kg 1.23
Refrigerant control Capillary tube
Gas side size mm ∅12.7
Connection type Flare connection
Liquid side size mm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m15*1
(One way) 20*2
Maximum height m8
difference
INDOOR UNIT RAS-18SKPX, RAS-18SKP-E RAS-18SKPX-V
Height mm 320
Dimensions Width mm1050
Depth mm228
Net weight kg 14
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 900
Air volume Medium fan m3/h 800
Low fan m3/h 700
Fan motor output W30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-18S2AX, RAS-18S2A-E RAS-18S2AX-V
Height mm
Dimensions Width mm
Depth mm
Net weight kg 39
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h
Fan motor output W42
Compressor Model
Output W
Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 43
SHX33SC4-U
42/39/37/35/33
Note *1 Chargeless pipe
*2 Maximum pipe
2350
2350 2450
550
780
290
1500
2450
1. SPECIFICATIONS

– 4–
FILE NO. SVM-08032
MODEL
RAS-24SKPX
RAS-24SKP-E
RAS-24S2A-E
ITEM Cooling Cooling
Capacity kW
220 V 240 V 220 V 240 V
6.40 6.45 6.40 6.45
Phase 1∅
Power source V220 – 240
Hz 50
Power consumption W2280 236022802360
Power factor %9888 9888
Running current A0.3/10.30.3/10.9 0.3/10.30.3/10.9
Indoor/Outdoor
Starting current A
Moisture removal lit/h
Noise
Indoor (H/M/L) dB 45/43/41/39/37
Outdoor (220 – 240 V) dB 56-57
Refrigerant Name of refrigerant R22
Rated amount kg
Refrigerant control Capillary tube
Gas side size mm ∅15.88
Connection type Flare connection
Liquid side size mm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m 15*1
(One way)
Maximum height m10
difference
INDOOR UNIT RAS-24SKPX RAS-24SKP-E
Height mm 320
Dimensions Width mm1050
Depth mm228
Net weight kg 13
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 1100
Air volume Medium fan m3/h
Low fan m3/h
Fan motor output W
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-24S2AX RAS-24S2A-E
Height mm 715
Dimensions Width mm780
Depth mm290
Netweight kg52
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2550 2400 2550
Fan motor output W42
Compressor Model
Output W1800
Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 43
RAS-24S2AX
1.86
2400
PH400X3CS-4KT1
2.7
950
850
30
25*2
67

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FILE NO. SVM-08032-1
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
Refrigerant
RAS-18SKPX / RAS-18S2AX
*1 No need to charge 15 m or less 15 m or less
extra refrigerant
*2 Need to charge Over 15 m up to 25 m (30 g/m) Over 15 m up to 20 m (20 g/m)
extra refrigerant
Temperature Condition JIS C9612
Cooling
Indoor unit inlet air temperature (DB) 27°C
(WB) 19°C
Outdoor unit inlet air temperature (DB) 35°C
(WB) 24°C
RAS-24SKPX / RAS-24S2AX RAS-18SKPX-V / RAS-18S2AX-V
RAS-24SKP-E / RAS-24S2A-E RAS-18SKP-E / RAS-18S2A-E

– 6 –
2.CONSTRUCTIONVIEWS
2-1. Indoor Unit
FILE NO. SVM-08032
65
262.5
40
262.5
215 235 215
235
320
40
10947 215.5 153.5
85 23
65
73.57
200
525
278 200 222 150
Air filter
Heat exchanger
Air inlet
Air outlet
1050
320
6)
Hanger 8~
Hanger Hanger
Center line
10)
Installation plate outline
For stud bold (
For stud bold (
Outline of indoor unit
786
72 78
50 50
78 72
Front Panel
Grille Inlet
Knock out system
50
Knock out system
73.5
50
228
7
Drain hose (0.5m)
12.70)
Connecting pipe (0.39m) Connecting pipe (0.49m)
6.35)(Flare
Hanger
(For 24 Series ; Flare 15.88)
(For 18 Series ; Flare
Hanger
132
19
157
Wireless remote controller
56
Remote controller holder
26
125
63

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FILE NO. SVM-08032-1
320
306
Z View
600
A detail Drawing (Back leg)
320
306
Ø 25 Drain outlet 11 x 14 Hole
(For 8 - 10 anchor bolt)
B Detail Drawing (Front leg)
FAN-GUARD
COVER-PV
Electrical part cover
Liquid side
(Flare 6.35)
Ø
Ø
Gas side
(Flare 12.7)
Service port
4x 11 Long holes(For 8- 10 anchor bolt)
Installation dimension
Air outlel
100 or more
100 or more
600 or more
600 or more
Air intlel
ØØØ
Ø6 hole
86
Ø6 hole
Ø11x14 hole
R15
32.5 A
320
R5.5
36
108125
50
129
84
54
600
320
9060090
275
290
550
Ø436
Z
R15
50
36
-
2
320
342
69
ØØØ
2-2. Outdoor Unit(18 Class)

–8–
FILE NO. SVM-08032-1
HANDLE
COVER-PV
HANDLE
600
Z View Service port
320
306
A Detail Drawing (Back leg) Ø
25 Drain outlet
2Ø11x14 Hole
(For Ø8-Ø10 anchor bolt) B
Ø6Hole
Ø11x14 Hole
50
36 R15
R
5.5
Ø6 hole
32.5
320
86
A
125108
600 or more
Air out
let
320
600
Air inlet
4xØ11 Long holes(ForØ8-Ø10 anchor bolt)
Gas-side
(Flare Ø15.88)
Liquid side
(Flare Ø6.35)
90 600 90 69 342
320
Z
50
36 R15
B Detail Drawing (Front leg)
Ø436
FAN-GUARD
715
290
275
600 or more
84
129
54
Electrical part cover
320
306
100 or more
100 or more
Installation dimension
2-3. Outdoor Unit (24 Class)

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FILE NO. SVM-08032
3.1. RAS-18SKPX / RAS-18S2AX, RAS-18SKPX-V / RAS-18S2AX-V,
3. WIRING DIAGRAM
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
CN03
CN01
2
1
2
1
1
2
1
2
Thermo Sensor(TA)
Heat Exchanger
Sensor(TC)
C07
+
C27
WP-018
DB01
BLK
P04
SG01
DSA
R63
R62
F01
6.3A
250VAC
L01
C25 C26
AC Motor
IC03
12V
MCU
4
31
2
R64
RY02
MCC-5044
COLOR IDENTIFICATION
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
GRN&YEL : GREEN&YELLOW
3
12
i
RED
GRY
RED
BLK
BLK
BLK
GRN&YEL
CHASSIS
MAGNETIC
CONTACTOR
A1
A2
UVW
RST
SPARK KILLER
FAN MOTOR
WHI BLK
RED
RED
CAPACITOR
WHI BLK
PNK
S
R
C
(or A)
(or B)
3
12
CAPACITOR
COMPRESSOR
RED
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
INDOOR
UNIT
OUTDOOR
UNIT
POWER SUPPLY
220-240V~ 50Hz
RED
BLK
LN
RAS-18SKP-E / RAS-18S2A-E