Toshiba RAS-24NKHP-E User manual

FILE NO. SVM-06009
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
June, 2006
RAS-24NKHP-E / RAS-24NAH-E
RAS-18NKPX-T / RAS-18N2AX-T
RAS-24NKPX-T / RAS-24N2AX-T

FILE NO. SVM-06009
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTIONVIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (24 Class)
2-3 Outdoor Unit (18 Class)
3. WIRING DIAGRAM
3-1 RAS-24NKHP-E/ RAS-24N2AH-E
3-2 RAS-24NKPX-T / RAS-24N2AX-T
3-3 RAS-18NKPX-T / RAS-18N2AX-T
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit (RAS-24NKHP-E)
4-2 Outdoor Unit (RAS-24NAH-E)
4-3 Indoor Unit (RAS-18,24NKPX-T)
4-4 Outdoor Unit (RAS-18N2AX-T)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-24NKHP-E / RAS-24NAH-E
5-2 RAS-24NKPX-T / RAS-24N2AX-T
5-3 RAS-18NKPX-T / RAS-18N2AX-T
6. CONTROL BLOCK DIAGRAM
6-1 RAS-24NKHP-E
6-2 RAS-18, 24NKPX-T
−1−
4-4 Outdoor Unit (RAS-24N2AX-T)
7-10 QUIET Mode
7. OPERA
7-11 COMFORT SLEEP mode
TION DESCRIPTION
7-1 Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 Hi POWER Mode
7-4 High-Temperature Limit Control
7-5 Low-Temperature Limit Control
7-6 Defrosting Operation
7-7 Auto Restart Function
7-8 Filter Check Lamp
7-9 Self-Cleaning function

−2 −
FILE NO. SVM-06009
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 How to Diagnose Faulty Part
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. PARTS REPLACEMENT
10-1 Indoor Unit
10-2 Outdoor Unit
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E - Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit (RAS-24N2AH-E)
11-4 Outdoor Unit (RAS-24N2AX-T)
11-5 Outdoor Unit (RAS-18N2AX-T)

FILE NO.SVM-06009
RAS-24NKHP-E RAS-18NKPX-T
ITEM Cooling Heating Cooling Cooling
RAS-24NKPX-T
RAS-24NAH-E
Capacity kW
220 V 240 V220 V 240 V 220 V 220 V
RAS-18N2AX-T RAS-24N2AX-T
6.30 6.30 6.66.75.106.40
Phase 1∅
Power source V220 −240
Hz 50
Power consumption W 2430 2510 2310 2410
1560
2250
Power factor %96 91 948895 95
Running current A
0.3/7.20.3/10.50
Indoor/Outdoor 11.2 11.2 10.9
11.1
Starting current A
42
Moisture removal lit/h 2.5
Noise Indoor (H/M/L) dB
Outdoor (220 −240 V) dB 56-57 57-58 56
Refrigerant Name of refrigerant R22
Rated amount kg 2.00
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 m15*1
(One way) 25*2
Maximum height
INDOOR UNIT RAS-24NKHP-E RAS-18NKPX-T RAS-24NKPX-T
Height mm 298
Dimensions Width mm 998
Depth mm220
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 1050 1050 1050
Air volume Medium fan m3/h 830 900 975
Low fan m3/h 625 667 667
Fan motor output W30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-24NAH-E RAS-18N2AX-T RAS-24N2AX-T
Height mm 715
Dimensions Width mm 780
Depth mm 290
Net weight kg 56
46
Condenser type Finned tube
Outdoor fan type Propeller fan
W 42
W
Safety device IOL, Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range °C15 ~ 43 −10 ~ 24
1800
MODEL
0.3/ 0.3/ 0.3/ 0.3/
67
48/46/44/41/39
m10
2400 2400
220
2.0
48/45/42/38/33
1.50
20*2
8
790
543
715
780
290
2400
1700
21 ~ 43
67
2.7
53/50/47/43/40
1.68
25*2
10
1200
52
1800
PH400X3CS-4KT1 PH290X2C-4FT1 PH400X3CS-4KT1
1. SPECIFICATIONS
−3−
Airflow volume
Fan motor output
Compressor Model
Output
m3/h 2550 2550

FILE NO. SVM-06009
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
Temperature Condition JIS B8615-1
Cooling Heating
Indoor unit inlet air temperature (DB) 27°C 20°C
(WB) 19°C 15°C
Outdoor unit inlet air temperature (DB) 35°C 7°C
(WB) 24°C 6°C
Refrigerant RAS-24NKHP-E / RAS-24NAH-E RAS-18NKPX-T / RAS-18N2AX-T
RAS-24NKPX-T / RAS-24N2AX-T
*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
−4−

2. CONSTRUCTIONVIEWS
2-1. Indoor Unit
FILE NO. SVM-06009
Air outlet
Air inlet
998
220
50
75
8
Knock out system
75 56
50
Back body
Front panel
Grille inlet
298
75
7
51
Knock out system
55 or more
Minimum distance to ceiling
100
40
48
450
20
20
48
100

∅65
998
298
10
763.5
5555 55 41
29
57 18
160

∅65
Connection pipe (0.39 m)
(Flare∅15.88)
Connection pipe (0.49 m) Wireless remote control
(Flare ∅6.35)
(For stud bolt ∅6)
(For stud bolt ∅8 -∅10)
Drain hose (0.54 m)
Installation
Plate outline
Outline of indoor unit
−5−

HANDLE
COVER-PV
HANDLE
600
Z View Service port
321
307
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
28
321
86
A
124109
600 or more
Air out
let
321
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
321
Z
50
36 R15
B Detail Drawing (Front leg)
Ø436
FAN-GUARD
715
290
275
600 or more
84
129
54
Electrical part cover
321
307
100 or more
100 or more
Installation dimension
2.2 Outdoor Unit
FILE NO. SVM-06009
−6−

FILE NO. SVM-06009
3
12
3. WIRING DIAGRAM
3-1.RAS-24NKHP-E / RAS-24NAH-E
DISCHARGE
PIPE
SENSOR (TD)
HEAT
EXCHANGER
SENSOR (TE)
CN08
CN07 BLU
BLU
BLK
BLK
11
2
33
11
2
33
i
LN3
12
i
FERRITE CORE
GRN&YEL
RED
RED
BLK
BLK
MAGNETIC
CONTACTOR
RA1
A2
52C
U
S
V
T
W
PNK
WHI
COMPRESSOR TERMINAL
BLK
S
R
CWHI BLK BLK
COIL FOR
4 WAY VALVE
RED
RED
RED
CAPACITOR CAPACITOR
BLK
BLK
WHI
RED CN01
CN05
GRY
1
3
5
7
9
1
3
5
7
9
GRN&YEL
CHASSIS
TRANSFORMER
BLK
BLK
RED
RED
11
33
11
33
2
CN11
BLU
YEL
1
3
1
3
1
13
CN02
BLU
BLU
11
33
CN03
F01
250VAC T6. 3A
CR11
CR12
CR13
RY07
RY05
RY06
SG01
CN06
TNR
R74
TNR
R73
MAIN P.C. BOARD (MCC-890)
COMPRESSOR FAN MOTOR
3
12
POWER SUPPLY
220-240V~50Hz
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
INDOOR
R
UNIT
S
OUTDOOR
C
UNIT
−8−
:
:
:
:
:
:
:
:
:
:
BROWN
RED
WHITE
YELLOW
BLUE
BLACK
GRAY
PINK
ORANGE
GREEN
GREEN &YELLOW
BRW
RED
WHI
YEL
BLU
BLK
GRY
PNK
ORN
GRN&YEL :
GRN
COLOR IDENTIFICATION
1
2
3
4
65
PNK YEL
ORN
RED BRW
BLU
1
2
3
4
65
6
5
4
3
127 8 9 10
6
5
4
3
1
BLU
27 8 9 10
6
5
4
3
127 8 9 10
6
5
4
3
127 8 9 10
1
3
4
651
3
4
65
INFRARED RAYS RECEIVE
AND INDICATION PARTS
HEAT
EXCHANGER
SENSOR
(TC)
THERMO
SENSOR
(TA)
12
1212
12
CN03 CN01
CN25
CN13
BLK BLK BLK BLK
F01 FUSE
DB01
FAN MOTOR
LOUVER
MOTOR
MAIN P.C. BOARD
(MCC-821)
L01
BLU BLU BLU BLU BLU BLU BLU BLU WHI
DC MOTOR
CN 07 CN 10
C02
C06
IC01
IC
T01
IC04
C15
CN23
BLK
WHI
RED
GRN&YEL
CN30
CN31
C01
R01
R09
R21
R22
BLK
P04 SG01
DSA VARISTOR
T6. 3A 250 V
IC02
DC15V
DC0V
DC12V
DC7V
DC0V
3
12

FILE NO. SVM-06009
3-2.RAS-24NKPX-T / RAS-24N2AX-T
TERMINAL
BLOCK INDOOR
UNIT
i
LN
i
GRN&YEL
RED
RED
RED
RED
BLK
BLK CHASSIS
GRY
POWER SUPPLY
220 V ~ 50 Hz
SPARK KILLER
MAGNETIC CONTACTOR
BLK BLK
RED
A2 A1
52C
1/L1 2/T1
3/L2 4/T2
5/L3 6/T3
COMPRESSOR
WHI
PNK BLK
C
S
R
CAPACITOR
CAPACITOR
WHI
RED
F AN MO T OR
B L K
C OMP R E S S OR T E R MINAL
R
S
C
3
12
OUTDOOR
TERMINAL
BLOCK
OUTDOOR
UNIT
−9−
:
:
:
:
:
:
:
:
:
:
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
12789
10
1
3
4
651
3
4
65
INFRARED RAYS RECEIVE
AND INDICATION PARTS
HEAT
EXCHANGER
SENSOR
(TC)
THERMO
SENSOR
(TA)
12
1212
12
CN03 CN01
CN25
CN13
BLK BLK BLK BLK
F01 FUSE
RY04
DB01
FAN MOTOR
LOUVER
MOTOR
MAIN P.C. BOARD
(MCC-821)
L01
BLU BLU BLU BLU BLU BLU BLU BLU WHI
DC MOTOR
CN 07 CN 10
C02
C06
IC02
IC01
IC
T01
IC04
C15
BLK
WHI
GRN&YEL
RED
C01
R01
R09
R21
R22
BLK
P04 SG01
DSA VARISTOR
T6.3A 250 V
DC15V
DC0V
DC12V
DC7V
DC0V
CN30
CN31
CN27
:GREENGRN YELLOW
3
12

FILE NO. SVM-06009
3-3.RAS-18NKPX-T / RAS-18N2AX-T
INDOOR
TERMINAL
BLOCK INDOOR
UNIT
i
LN3
12
i
GRN&YEL
RED
RED
RED
RED
BLK
BLK CHASSIS
GRY
POWER SUPPLY
220 V ~ 50 Hz
SPARK KILLER
MAGNETIC CONTACTOR
BLK BLK
RED
A1 A2
52C
R U
SV
TW
COMPRESSOR
WHI
PNK BLK
C
S
R
FAN MOTOR
BLK
COMPRESSOR TERMINAL
OUTDOOR
TERMINAL
BLOCK
OUTDOOR
UNIT
R
S
C
CAPACITOR
CAPACITOR
WHI
RED
−10 −
:
:
:
:
:
:
:
:
:
:
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
12789
10
1
3
4
651
3
4
65
INFRARED RAYS RECEIVE
AND INDICATION PARTS
HEAT
EXCHANGER
SENSOR
(TC)
THERMO
SENSOR
(TA)
12
1212
12
CN03 CN01
CN25
CN13
BLK BLK BLK BLK
F01 FUSE
RY04
DB01
FAN MOTOR
LOUVER
MOTOR
MAIN P.C. BOARD
(MCC-821)
L01
BLU BLU BLU BLU BLU BLU BLU BLU WHI
DC MOTOR
CN 07 CN 10
C02
C06
IC02
IC01
IC
T01
IC04
C15
BLK
WHI
GRN&YEL
RED
C01
R01
R09
R21
R22
BLK
P04 SG01
DSA VARISTOR
T6.3A 250 V
DC15V
DC0V
DC12V
DC7V
DC0V
CN30
CN31
CN27
:GREENGRN YELLOW
3
12