Toshiba RAS-24UKX User manual

SERVICE MANUAL
AIR-CONDITIONER
SPLIT WALL TYPE
RAS-24UKX / RAS-24UAX
RAS-24UK-AR / RAS-24UA-AR
RAS-18UKX / RAS-18UAX
RAS-18UK-AR / RAS-18UA-AR
FILE NO. SVM-01010
24 Class18 Class
Dec., 2001

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FILE NO. SVM-01010
CONTENT
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit (RAS-24UKX, RAS-24UK-AR)
2-2 Indoor Unit (RAS-18UKX, RAS-18UK-AR)
2-3 Outdoor Unit (RAS-24UAX, RAS-24UA-AR)
2-4 Outdoor Unit (RAS-18UAX, RAS-18UA-AR)
3. WIRING DIAGRAM
3-1 RAS-24UKX / RAS-24UAX
RAS-24UK-AR / RAS-24UA-AR
3-2 RAS-18UKX / RAS-18UAX
RAS-18UK-AR / RAS-18UA-AR
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit (RAS-24UAX, RAS-24UA-AR)
4-3 Outdoor Unit (RAS-18UAX, RAS-18UA-AR)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-24UKX / RAS-24UAX
RAS-24UK-AR / RAS-24UA-AR
5-2 RAS-18UKX / RAS-18UAX
5-3 RAS-18UK-AR / RAS-18UA-AR
6. CONTROL BLOCK DIAGRAM
7. OPERATION DESCRIPTION
7-1 Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 ECONO. Mode
7-4 High-Temperature Limit Control
7-5 Low-Temperature Limit Control
7-6 Auto Restart Function
7-7 Filter Check Lamp

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FILE NO. SVM-01010
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 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 How to Diagnose Faulty Parts
9-6 Troubleshooting for Indoor Unit
9-7 Troubleshooting for Wiring (Interconnect Cable and Serial Signal Wire)
9-8 Troubleshooting for P.C. Board
9-9 Troubleshooting for Remote Control
10. PART REPLACEMENT
10-1 Indoor Unit
10-2 Outdoor Unit (RAS-24UAX, RAS-24UA-AR)
10-3 Outdoor Unit (RAS-18UAX, RAS-18UA-AR)
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (1)
11-2 Indoor Unit (2)
11-3 Outdoor Unit (RAS-24UAX, RAS-24UA-AR)
11-4 Outdoor Unit (RAS-18UAX)
11-5 Outdoor Unit (RAS-18UA-AR)

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FILE NO. SVM-01010
ITEM MODEL RAS-24UKX/24UAX
RAS-24UK-AR/24UA-AR RAS-18UKX/18UAX RAS-18UK-AR/18UA-AR
Cooling Cooling Cooling Cooling
Capacity kW 220V 240V 220V 240V 220V 240V 220V 240V
6.40 6.45 6.40 6.45 5.20 5.25 5.20 5.25
Phase 1Ø
V220-240
Hz 50
Power consumption W 2350 2440 2350 2440 1870 1950 1920 2040
Power factor % 96 91 96 91 95 88 95 88
Running 220V 240V 220V 240V 220V 240V 220V 240V
current Indoor /Outdoor A 0.3/10.9 0.3/10.8 0.3/10.9 0.3/10.8 0.2/8.75 0.2/9.0 0.2/9.0 0.2/9.5
Starting current A 50 40
Moisture removal lit/h 2.7 2
Noise Indoor (H/M/L) dB 45/41/37 42/39/35
Outdoor (220-240V) dB 56-57 51 52 52 53
Refrigerant Name of refrigerant R22
Rated amount kg 1.63 1.06 1.17
Refrigerant control Capillary tube
Gas side size mm Ø 15.88 Ø 12.7
Connection type Flare connection
Liquid side size mm Ø 6.35
Connection type Flare connection
Maximum length m15*1
(One way) 25*220*2
Maximum height m10 8
difference
INDOOR UNIT RAS-24UKX RAS-24UK-AR RAS-18UKX RAS-18UK-AR
Height mm 298
Dimensions Width mm 998
Depth mm 208
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 950 750
Air volume Medium fan m3/h 750 650
Low fan m3/h 600 530
Fan motor output W 30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-24UAX RAS-24UA-AR RAS-18UAX RAS-18UA-AR
Height mm 690 538
Dimensions Width mm 880 830
Depth mm 310 300
Net weight kg 65 65 50 54
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 3380 3560 3380 3560 1830 2010 2105 2310
Fan motor output W 65 65 42 65
Compressor Model PH280X3-4MS PH250X3-4LM
Output W 2000 1500
Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 15 ~ 43 15 ~ 52 15 ~ 43 15 ~ 52
Interconnection
pipe
Power source
1. SPECIFICATIONS

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FILE NO. SVM-01010
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
Refrigerant
*1 No need to charge
refrigerant
*2 Need to charge
refrigerant
RAS-24UKX/24UAX
RAS-24UK-AR/24UA-AR
15m or less
Over 15m up to 25m (20g/m)
RAS-18UKX/18UAX
RAS-18UK-AR/18UA-AR
15m or less
Over 15m up to 20m (20g/m)
Temperature
Condition JIS C9612-1994
Cooling
(DB) 27 °C
(WB) 19 °C
(DB) 35 °C
(WB) 24 °C
Indoor unit inlet air temperature
Outdoor unit inlet air temperature

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FILE NO. SVM-01010
2. CONSTRUCTION VIEWS
2-1. Indoor Unit (RAS-24UKX, RAS-24UK-AR)
Connecting pipe (0.49m)
(Flare ø6.35)
Drain hose (0.54m)
Connecting pipe (0.39m)
(Flare ø15.88)
Minimum distance to ceiling
For stud bolt (ø6)
For stud bolt (ø8 – ø10)
Outline of indoor unit
55 or more
100
40
48
450
20
20
48
100
75 65
50
998
51
208
850
298
775
50
998
298
10
763.5
5555 55 41
29
Installation
Plate outline
Back body
Front panel
Grille inlet
Knock out system Knock out system

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FILE NO. SVM-01010
2-2. Indoor Unit (RAS-18UKX, RAS-18UK-AR)
Connecting pipe (0.49m)
(Flare ø6.35)
Drain hose (0.54m)
Connecting pipe (0.39m)
(Flare ø12.7)
Minimum distance to ceiling
For stud bolt (ø6)
For stud bolt (ø8 – ø10)
Outline of indoor unit
55 or more
100
40
48
450
20
20
48
100
75 65
50
998
51
208
850
298
775
50
998
298
10
763.5
5555 55 41
29
Installation
Plate outline
Back body
Front panel
Grille inlet
Knock out system Knock out system

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FILE NO. SVM-01010
2-3. Outdoor Unit (RAS-24UAX, RAS-24UA-AR)
120
63.8
340
600
27
50
690
880 74
140
88
310
340 (pitch) 12
12
364
A
ø12x18 hole
Detail Drawing
ø25 Drain outlet
52
4-ø12x18 holes (for ø8 – ø10 anchor bolt)
Handle
Handle
Mounting dimension of anchor bolt
600
100 or more 600 or
more
600 or more
100 or more Air outlet
Air inlet
4-ø12x18 for ø8 – ø10 anchor bolt
Electric Parts cover
Liquid side (Flare ø6.35)
Gas side (Flare ø15.88)
Service Port
A
600
340
23
68

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FILE NO. SVM-01010
2-4. Outdoor Unit (RAS-18UAX, RAS-18UA-AR)
A
ADetail Drawing
ø6 hole
R10
ø11x14 hole
ø25 Drain outlet 8-ø6 holes
(for fixing outdoor unit)
6-ø11x14 holes (for ø8 – ø10 anchor bolt)
Fan guard
Handle
ø420
Service Port
Electric Parts cover
Liquid side (Flare ø6.35)
Gas side (Flare ø12.7)
Installation dimension
100 or more Air inlet 600 or more
100 or more
Air inlet
Air
out-
let
600 or
more
600
4xø11x14 for ø8-ø10 anchor bolt
600
325
344
91 54
160
50
90
600
830
90
120
538 52
325
300

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FILE NO. SVM-01010
3. WIRING DIAGRAM
3-1. RAS-24UKX / RAS-24UAX
RAS-24UK-AR / RAS-24UA-AR
CAPACITOR
CAPACITOR
:
:
:
:
:
:
:
:
:
:
BROWN
RED
WHITE
YELLOW
BLUE
BLACK
GRAY
PINK
ORANGE
GREEN &
BRW
RED
WHI
YEL
BLU
BLK
GRY
PNK
ORN
GRN&YEL
COLOR IDENTIFICATION
1
2
3
4
65
PNK YEL
ORN
RED BRW
BLU
1
2
3
4
65
6
5
4
3
12789
10
6
5
4
3
1
BLU
2
11
3
789 10
6
5
4
3
12789
10
6
5
4
3
12
3
12
3
12
LN
789 10
1
3
4
65
1
3
4
65
INFRARED RAYS RECEIVE
AND INDICATION PARTS
HEAT
EXCHANGER
SENSOR
(TC)
THERMO
SENSOR
(TA)
POWER SUPPLY
220 –240V ~ 50Hz.
SPARK KILLER
MAGNETIC SWITCH
12
12
12
12
CN03 CN01
CN25
CN13
BLK BLK BLK BLK
F01 FUSE
RY04
DB01
FAN MOTOR
FAN MOTOR
LOUVER
MOTOR
MAIN P.C. BOARD
(MCC-821)
L01
BLU BLU BLU BLU BLU BLU BLU BLU WHI
INDOOR
UNIT
POWER
TERMINAL
BLOCK
OUTDOOR
UNIT
DC MOTOR
CN 07 CN 10
C02
C06
IC02
IC01
IC
T01
IC04
C15
BLK
WHI
GRN&YEL
RED
BLK
BLK
BLK
BLK BLK
RED RED
CHASSIS
GRN&YEL
GRN&YEL FERRITE CORE
COMPRESSOR
WHI
WHI
PNK BLK
GRY
C
RED
RED RED
RED
C01
R01
R09
R21
R22
BLK
P04 SG01
DSA
VARISTOR
T6.3A 250V
A1 A2
52C
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
S
R
DC15V
DC0V
DC12V
DC7V
DC0V
CN30
CN31
CN27
:GREENGRN
YELLOW
RU
SV
TW