Toshiba RAS-24NKHD-E5 User manual

FILE NO. SVM-06010
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
June, 2006
RAS-24NKHD-E5 / RAS-24NAH-E
RAS-18NKDX5-T / RAS-18N2AX-T
RAS-24NKDX5-T / RAS-24N2AX-T

FILE NO. SVM-06010
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-24NKHD-E5 / RAS-24N2AH-E
3-2 RAS-24NKDX5-T / RAS-24N2AX-T
3-3 RAS-18NKDX5-T / RAS-18N2AX-T
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit (RAS-24NKHD-E5)
4-2 Outdoor Unit (RAS-24NAH-E)
4-3 Indoor Unit (RAS-18,24NKDX5-T)
4-4 Outdoor Unit (RAS-18N2AX-T)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-24NKHD-E5/ RAS-24NAH-E
5-2 RAS-24NKDX5-T / RAS-24N2AX-T
5-3 RAS-18NKDX5-T / RAS-18N2AX-T
6. CONTROL BLOCK DIAGRAM
6-1 RAS-24NKHD-E5
6-2 RAS-18, 24NKDX5-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-06010
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-06010
RAS-24NKHD-E5 RAS-18NKDX5-T
ITEM Cooling Heating Cooling Cooling
RAS-24NKDX5-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 6.606.705.106.40
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 A0.3/7.2 0.3/10.50
Indoor/Outdoor 11.2 11.2 10.9 11.10
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-24NKHD-E5 RAS-18NKDX5-T RAS-24NKDX5-T
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 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
2440
220
2
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−
2550 2440 2550

FILE NO. SVM-06010
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-24NKHD-E5 / RAS-24NAH-E RAS-18NKDX5-T / RAS-18N2AX-T
RAS-24NKDX5-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−

– 5–
FILE NO. SVM-06010
2. CONSTRUCTION VIEWS
2-1. Indoor Unit
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)
(Flare ∅15.88)
Back body
Frontpanel
Grille inlet
298
75
7
51
Knock out system

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-06010
−6−

FILE NO. SVM-06010
3. WIRING DIAGRAM
3-1.RAS-24NKHD-E5/ RAS-24NAH-E
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
POWER SUPPLY
220-240V~50Hz
R
3
12
3
12
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
INDOOR
UNIT
C OL OR IDE N TIF IC AT ION
B R W : B R OW N
R E D : R E D
WHI : WHIT E
Y E L : Y E LL O W
B L U : B L UE
B L K : B LAC K
G R Y : G R A Y
OR N : OR ANG E
G R N : G R E E N
P NK : P INK
GR N&Y E L : G R E E N & Y E LLO W
4
5
S erial S ignal
circuit
MA IN P . C . B O AR D
(W P -008)
3
2
1C N30
F AN M OT O R
DC MOT OR
C N10
sensor
(T A)
Thermo.
(T C )
sensor
Hea t exchanger
BLK BLK
BLK BLK
C N03 C N01
1 2
21
21
21
W P -008
electrode
Air purifier
electrode
Ion
BLK BLK/RED
R E D B L K
+5V
+12 V (B )
+12V (A)
P ower s upply
High-voltage
B L K
B R W
RED
BRW BRW
C N34
R E D
B R W
B R W
B R W
Micro S W.
B L U
B R W
4
33
4
2 2
11
2
11
2
C N34
10
10
9
98
8
7
76
65
5
4
43
3
21
21
10
10
9
9
8
8
7
7
6
65
54
4
3
3
2
2
1
1
WHI
B L U B L U B L U B L U B L U B L U B L U B L U B L U
C N13
C N25
MC C -8 19
and Indication parts
Infrared rays receive
Louver
motor
B R W R E D
OR N
Y E L
P NK B L U
6
6
5
5
4
4
3
3
2
2 1
1C N07
C 03
DB 0 1R 0 1
C 02C 01
L01
Varistor
6.3A 250V
F 01
DS A Varis tor
P 04B L K
DISCHARGE
PIPE
SENSOR (TD)
HEAT
EXCHANGER
SENSOR (TE)
CN08
CN07
BLU
BLU
BLK
BLK
S
OUTDOOR
C
UNIT
−7−

FILE NO. SVM-06010
3-2.RAS-24NKDX5-T / RAS-24N2AX-T
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 TO R
B L K
C OMP R E S S OR T E R MINAL
R
S
C
INDOOR
TERMINAL
BLOCK
INDOOR
UNIT
3
12
5
6
6
B L U P NK
Y E L
OR N
R E D B R W
Louver
motor
Infrared rays receive
and Indication parts
MC C -8 19
C N25
C N13
B L U B L U B L U B L U B L U B L U B L U B L U B L U
WHI
1
1
2
2
3
3
4
4 5
5 6
6
7
7
8
8
9
9
10
10
1 2
1 2 3
3 4
4
5
5 6
6 7
7
8
8 9
910
10
C N34 2
1 1
2
1 1
22
4
3 3
4
B R W
B L U
Micro S W.
B R W
B R W
B R W
R E D
C N34
BRW BRW RED
B R W
B L K
High-voltage
P ower s upply
+12V (A)
+12 V (B )
+5V
B L KR E D
BLK/RED BLK
Ion
electrode
Air purifier
electrode
W P -008
1 2
12
1 2
2
1C N01C N03
BLK BLK
BLK BLK
Hea t exchanger
sensor
(T C )
Thermo.
(T A)
sensor
C N10
DC MOT OR
F AN M OT O R
R elay
C N30
1
2
31 1
3 3
MA IN P . C . B OAR D
B L K P 04
Varis tor
DS A
F 01
6.3A 250V
Varis tor
L01
C 01 C 02
R 0 1 DB 0 1
C 03
C N07
1
12
2
3
3
4
4
5
B R W : B R O W N
R E D : R E D
WHI : WHIT E
Y E L : Y E L LO W
B L U : B L UE
B L K : B L AC K
G R Y : G R AY
OR N : OR ANG E
G R N : G R E E N
P NK : P INK
G R N&Y E L : G R E E N & YE LLO W
C OL OR IDE N TIF IC AT IO N
G R N& Y E L
B L K
WHI
R E D
C N31
C N27
1
13
3 4
4
5
5 6
6
1
1
2
2
3
3
4
4 5
5 6
6
1
1
2
2
3
3
4
4
P ower s upply
circuit
3
12
OUTDOOR
TERMINAL
BLOCK
OUTDOOR
UNIT
−8−

FILE NO. SVM-06010
3-3.RAS-18NKDX5-T / RAS-18N2AX-T
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
−9−
INDOOR
TERMINAL
5
6
6
B L U P NK
Y E L
OR N
R E D B R W
Louver
motor
Infrared rays receive
and Indication parts
MC C -8 19
C N25
C N13
B L U B L U B L U B L U B L U B L U B L U B L U B L U
WHI
1
1
2
2
3
3
4
4 5
5 6
6
7
7
8
8
9
9
10
10
1 2
1 2 3
3 4
4
5
5 6
6 7
7
8
8 9
910
10
C N34 2
1 1
2
1 1
22
4
3 3
4
B R W
B L U
Micro S W.
B R W
B R W
B R W
R E D
C N34
BRW BRW RED
B R W
B L K
High-voltage
P ower s upply
+12V (A)
+12 V (B )
+5V
B L KR E D
BLK/RED BLK
Ion
electrode
Air purifier
electrode
W P -008
1 2
12
1 2
2
1C N01C N03
BLK BLK
BLK BLK
Hea t exchanger
sensor
(T C )
Thermo.
(T A)
sensor
C N10
DC MOT OR
F AN M OT O R
R elay
C N30
1
2
31 1
3 3
MA IN P . C . B OAR D
B L K P 04
Varis tor
DS A
F 01
6.3A 250V
Varis tor
L01
C 01 C 02
R 0 1 DB 0 1
C 03
C N07
1
12
2
3
3
4
4
5
B R W : B R O W N
R E D : R E D
WHI : WHIT E
Y E L : Y E L LO W
B L U : B L UE
B L K : B L AC K
G R Y : G R AY
OR N : OR ANG E
G R N : G R E E N
P NK : P INK
G R N&Y E L : G R E E N & YE LLO W
C OL OR IDE N TIF IC AT IO N
G R N& Y E L
B L K
WHI
R E D
C N31
C N27
1
13
3 4
4
5
5 6
6
1
1
2
2
3
3
4
4 5
5 6
6
1
1
2
2
3
3
4
4
P ower s upply
circuit
BLOCK
INDOOR
UNIT
3
12