Toshiba RAS-18NKHP-E User manual

FILE NO. SVM-06004
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-18NKHP-E / RAS-18NAH-E
RAS-18NKP-E / RAS-18NA-E
RAS-24NKP-E / RAS-24NA-E
RAS-B18NKPX / RAS-18N2AX
RAS-24NKPX / RAS-24N2AX
24 Class18 Class
May, 2006

–1–
FILE NO. SVM-06004
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (24 Class)
2-3 Outdoor Unit (18 Class)
3. WIRING DIAGRAM
3-1
3-2
RAS-18NKHP-E/ RAS-18NAH-E
3-3
RAS-24NKP-E / RAS-24NA-E, RAS-24NKPX / RAS-24N2AX
RAS-18NKP-E/ RAS-18NA-E, RAS-18NKPX / RAS-18N2AX
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
(RAS-18NKHP-E)
4-2 Outdoor Unit (RAS-18NAH-E)
4-3 Indoor Unit (RAS-24NKP-E, RAS-24NKPX,
4-4 Outdoor Unit (RAS-24NA-E, RAS-24N2AX)
4-5 Outdoor Unit (RAS-18NA-E, RAS-18N2AX)
5. REFRIGERATION CYCLE DIAGRAM
5-1
5-2
RAS-18NKHP-E/ RAS-18NAH-E
5-3
RAS-24NKP-E / RAS-24NA-E,
5-4
RAS-18NKP-E/ RAS-18NA-E
RAS-B18NKPX / RAS-18N2AX
6. CONTROL BLOCK DIAGRAM
6-1 RAS-18NKHP-E
6-2 RAS-18NKP-E / RAS-18NA-E, RAS-B18NKPX / RAS-18N2AX
RAS-24NKP-E / RAS-24NA-E, RAS-24NKPX, RAS-24N2AX
RAS-18NKP-E, RAS-18NKPX)
RAS-24NKPX / RAS-24N2AX
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

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FILE NO. SVM-06004
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 (RAS-24NA-E, RAS-24N2AX)
10-3 Outdoor Unit (RAS-18NAH-E, RAS-18NA-E, RAS-18N2AX)
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E - Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit
11-4 Outdoor Unit (RAS-24NA-E, RAS-24N2AX)
(RAS-18NAH-E)
11-5 Outdoor Unit (RAS-18NA-E, RAS-18N2AX)

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FILE NO. SVM-06004
MODEL RAS-24NKP-E RAS-24NKPX
RAS-24N2AX
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 W2350 2440 2350 2440
Power factor %99909990
Running current A0.3/10.5 0.3/11.00.3/10.50 0.3/11.0
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-24NKP-E RAS-24NKPX
Height mm 298
Dimensions Width mm 998
Depth mm220
Net weight kg 13
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 900
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-24NA-E RAS-24N2AX
Height mm 715
Dimensions Width mm780
Depth mm290
Netweight kg52
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2600 2400 2600
Fan motor output W42
Compressor Model
Output W1800
Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 43
1. SPECIFICATIONS
RAS-24NA-E
1.68
2400
PH400X3CS-4KT1
2.7
750
625
30
25*2
67

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FILE NO. SVM-06004
MODEL RAS-18NKHP-E RAS-18NKP-E RAS-B18NKPX
RAS-18NAH-E RAS-18NA-E RAS-18N2AX
ITEM Cooling Heating Cooling Cooling
Capacity kW
220 V 240 V220 V 240 V 220 V 240 V 220 V 240 V
5.05 5.05 5.80 5.90 5.20 5.25 5.20 5.25
Phase 1∅
Power source V220 – 240
Hz 50
Power consumption W 1920 2040 1800 1950 1910 1990 1910 1990
Power factor %9588948692859285
Running current A0.2/9.150.2/9.40 0.3/9.150.3/9.40
Indoor/Outdoor 8.99.48.49.2
Starting current A42
Moisture removal lit/h 2
Noise Indoor (H/M/L) dB
Outdoor (220 – 240 V) dB 52-53 53-54 51 52 51 52
Refrigerant Name of refrigerant R22
Rated amount kg 1.00
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-18NKHP-E RAS-18NKP-E RAS-B18NKPX
Height mm 298
Dimensions Width mm 998
Depth mm220
Net weight kg 13
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 900900 900
Air volume Medium fan m3/h 650 700 650
Low fan m3/h 530 570 530
Fan motor output W30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-18NAH-E RAS-18NA-E RAS-18N2AX
Height mm 550
Dimensions Width mm780
Depth mm290
Net weight kg 43 41
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h
Fan motor output W42
Compressor Model
Output W
Safety device IOL, Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range °C 15 ~ 43 –10 ~ 24 21 ~ 43
PH340X3C-4KT1
45
44/42/39/37/35
Note *1 Chargeless pipe
*2 Maximum pipe
2350
2350 2550
0.3
0.3 0.3 0.3
44/42/39/37/35
1.53
550
780
290
2550
2350
1500
2550

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FILE NO. SVM-06004
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
RAS-18NKHP-E / RAS-18NAH-E
RAS-24NKP-E / RAS-24NA-E RAS-18NKP-E / RAS-18NA-E
Refrigerant RAS-24NKPX / RAS-24N2AX RAS-B18NKPX / RAS-18N2AX
*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 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

CONSTRUCTIONVIEWS
Air outlet
Plasma air purifierHeat exchangerAir filter
Air inlet
998
220
50
75
8
Knock out system
75 56
50
58 19
163
Wireless remote control
Connection pipe (0.49 m)
(Flare ∅6.35)
Drain hose (0.54 m)
90 or more
Minimum distance to ceiling
100
40
48
450
20
20
48
100
∅
65
998
298
10
763.5
5555 55 41
29
∅
65
(For stud bolt ∅ 6)
(For stud bolt ∅ 8 − ∅ 10)
Installation
Plate outline
Outline of indoor unit
Connection pipe (0.39 m)
(For 24 series and RAS-18NKDX4-T2 : Flare ∅15.88)
(For 18 series except RAS-18NKDX4-T2 : Flare ∅12.7)
Back body
Front panel
Grille inlet
298
75
7
51
Knock out system
2-1. Indoor Unit
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FILE NO. SVM-06004

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(For Ø8- 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 (24 Class)
−7 −
FILE NO. SVM-06004

321
307
Z View
600
A detail Drawing (Back leg)
321
307
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
R
15
28
A
321
R5.5
36
109 124
50
129
84
54
600
321
9060090
275
290
550
Ø436
Z
R15
50
36
-
2
321
342
69
ØØØ
2-3. Outdoor Unit(18 Class)
−8 −
FILE NO. SVM-06004

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)
FILE NO. SVM-06004
3
12
POWER SUPPLY
220-240V~ 50Hz
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
INDOOR
UNIT
OUTDOOR
UNIT
10
10
98
7
1 2 3 4 65 10
Infrared rays receive
5 64 CN13 321 78 9
9871 2 3 CN25
P04BLK
4 6
WHI
5
250V6.3A
F01
DSA Varistor
motor
Louver
BLU
ORN
5
5 2
23
3
1
1
RED YEL
CN07
PNK
4
4
98 1071 2 3
and Indication parts
4 65
YEL
GRY
BRW
TEMP FUSE
145 C
6
6
5
5
4
4
13
2
13
2
+5 VDC
+12 VDC
Serial Signal
circuit
MAIN P.C. BOARD
(WP-003)
CN23
CN31
CN30
BRW
6
6
BLU BLU BLU BLU BLU BLU BLU BLU BLU
WP-003
COMPRESSOR FAN MOTOR
3-1.RAS-18NKHP-E / RAS-18NAH-E
–9 –
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
ORN : ORANGE
GRN : GREEN
GRN&YEL : GREEN & YELLOW
COLOR IDENTIFICATION
PNK : PINK
R
S
C
3. WIRING DIAGRAM