Toshiba RAS-24UKP-E, RAS-18UA-E, RAS-24UA-E, RAS-18UAH-E, RAS-18UKHP-E SERVICE MANUAL
...
SERVICE MANUAL
AIR-CONDITIONER
RAS-24UKHP-E / RAS-24UAH-E
RAS-24UKP-E / RAS-24UA-E
FILE NO. SVM-01007
SPLIT WALL TYPE
RAS-24UKPX
/
RAS-24UAX
RAS-24UKP-AR / RAS-24UA-AR
RAS-24UKPX-T/RAS-24UAX-T
RAS-18UKHP-E/RAS-18UAH-E
RAS-18UKP-E/RAS-18UA-E
RAS-18UKPX/RAS-18UAX
RAS-18UKP-AR/RAS-18UA-AR
RAS-18UKPX-T/RAS-18UAX-T
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
24 Class18 Class
CONTENT
1. SPECIFICATIONS
1-1 RAS-24UKHP-E/24UAH-E, RAS-24UKP-E/24UA-E
RAS-24UKPX/24UAX, RAS-24UKP-AR/24UA-AR
RAS-24UKPX-T/24UAX-T
1-2 RAS-18UKHP-E/18UAH-E, RAS-18UKP-E/18UA-E
RAS-18UKPX/18UAX, RAS-18UKP-AR/18UA-AR
RAS-18UKPX-T/18UAX-T
2. CONSTRUCTION VIEWS
2-1 Indoor Unit (RAS-24UKHP-E, 24UKP-E, 24UKPX, 24UKP-AR, 24UKPX-T)
2-2 Indoor Unit (RAS-18UKHP-E, 18UKP-E, 18UKPX, 18UKP-AR, 18UKPX-T)
2-3 Outdoor Unit (RAS-24UAH-E, 24UA-E, 24UAX, 24UA-AR, 24UAX-T)
2-4 Outdoor Unit (RAS-18UAH-E, 18UA-E, 18UAX, 18UA-AR, 18UAX-T)
3. WIRING DIAGRAM
3-1 RAS-24UKHP-E/RAS-24UAH-E
3-2 RAS-24UKP-E/RAS-24UA-E
RAS-24UKPX/RAS-24UAX
RAS-24UKP-AR/RAS-24UA-AR
RAS-24UKPX-T/RAS-24UAX-T
3-3 RAS-18UKHP-E/RAS-18UAH-E
3-4 RAS-18UKP-E/RAS-18UA-E
RAS-18UKPX/RAS-18UAX
RAS-18UKP-AR/RAS-18UA-AR
RAS-18UKPX-T/RAS-18UAX-T
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit (RAS-24UKHP-E, 18UKHP-E)
4-2 Outdoor Unit (RAS-24UAH-E)
4-3 Outdoor Unit (RAS-18UAH-E)
4-4 Indoor Unit (RAS-24UKP-E, 24UKPX, 24UKP-AR, 24UKPX-T, 18UKP-E, 18UKPX,
18UKP-AR, 18UKPX-T)
4-5 Outdoor Unit (RAS-24UA-E, 24UAX, 24UA-AR, 24UAX-T)
4-6 Outdoor Unit (RAS-18UA-E, 18UAX, 18UA-AR, 18UAX-T)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-24UKHP-E/24UAH-E
5-2 RAS-24UKP-E/24UA-E
RAS-24UKPX/24UAX
RAS-24UKP-AR/24UA-AR
RAS-24UKPX-T/24UAX-T
5-3 RAS-18UKHP-E/18UAH-E, RAS-18UKP-E/18UA-E
5-4 RAS-18UKP-E/18UA-E
RAS-18UKPX/18UAX
RAS-18UKP-AR/18UA-AR
RAS-18UKPX-T/18UAX-T
– 1 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
6. CONTROL BLOCK DIAGRAM
6-1 RAS-24UKHP-E, 18UKHP-E
6-2 RAS-24UKP-E, 24UKPX, 24UKP-AR, 24UKPX-T
RAS-18UKP-E, 18UKPX, 18UKP-AR, 18UKPX-T
7. OPERATION DESCRIPTION
7-1 Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 ECO Mode
7-4 HiPOWER Mode
7-5 High-Temperature Limit Control
7-6 Low-Temperature Limit Control
7-7 Defrosting Operation
7-8 Auto Restart Function
7-9 Filter Check Lamp
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 Other
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. TROUBLESHOOTING CHART
10-1 Indoor Unit
10-2 Outdoor Unit (RAS-24UAH-E, 24UA-E, 24UAX, 24UA-AR, 24UAX-T)
10-3 Outdoor Unit (RAS-18UAH-E, 18UA-E, 18UAX, 18UA-AR, 18UAX-T)
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (1)
11-2 Indoor Unit (2)
11-3 Indoor Unit (3)
11-4 Outdoor Unit (1)
11-5 Outdoor Unit (2)
11-6 Outdoor Unit (3)
11-7 Outdoor Unit (4)
11-8 Outdoor Unit (5)
– 2 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
1. SPECIFICATIONS
1-1
ITEM
Capacity kW
Power source
Power consumption W
Power factor %
Running current A
Starting current A 60 50
Moisture removal lit/h 2.5 2.7
Noise
Refrigerant
Refrigerant control Capillary tube
Interconnection
pipe
INDOOR UNIT RAS-24UKHP-E RAS-24UKP-E RAS-24UKPX RAS-24UKP-AR RAS-24UKPX-T
Dimensions Height mm 298
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
Air volume High fan m3/h 950
Fan motor output W 30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-24UAH-E RAS-24UA-E RAS-24UAX RAS-24UA-AR RAS-24UAX-T
Dimensions Height mm 690
Net weight kg 66 65 65 65 65
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume 3380 3560 3380 3560 3380 3560 3380 3560 3380
Fan motor output W 65
Compressor Model PH310X3-4MM PH280X3-4MS
Safety device IOL, Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range°C 15 ~ 43 -10 ~ 24 15 ~ 43 15 ~ 43 15 ~ 52 15 ~ 43
Indoor (H/M/L) dB 45/41/37
Outdoor (220-240V) dB 56-57 57-58 56-57 56
Name of refrigerant R22
Rated amount kg 1.63
Gas side size mm
Connection type Flare connection
Liquid side size mm
Connection type Flare connection
Maximum length
(One way) 25
Maximum height difference
Width mm 998
Depth mm 208
Medium fan m3/h 750 800 750
Low fan m3/h 600 650 600
Width mm 880
Depth mm 310
Output W 2200 2000
MODEL
Indoor / Outdoor
RAS-24UKHP-E/24UAH-E RAS-24UKP-E/24UA-E RAS-24UKPX/24UAX RAS-24UKP-AR/24UA-AR RAS-24UKPX-T/24UAX-T
Cooling Heating Cooling Cooling Cooling Cooling
220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V
6.30 6.30 6.80 6.90 6.40 6.45 6.40 6.45 6.40 6.45 6.40
Phase 1Ø
V 220 – 240 220
Hz 50
2430 2510 2430 2530 2350 2440 2350 2440 2350 2440 2350
96 91 96 91 96 91 96 91 96 91 96
220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V
0.3/ 0.3/ 0.3/ 0.3/
11.2 11.1 11.2 11.2
m
m
0.3/10.9 0.3/10.8 0.3/10.9 0.3/10.8 0.3/10.9 0.3/10.8 0.3/10.9
Ø
15.88
Ø 6.35
*1
15
*2
10
– 3 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
1-2
ITEM
MODEL
Capacity kW
Power source
Power consumption W
Power factor %
Running current A
Indoor / Outdoor
Starting current A 40
Moisture removal lit/h 2
Noise Indoor (H/M/L) dB 42/39/35
Outdoor (220-240V) dB 52-53 53-54 51 52 51 52 52 53 51
Refrigerant
Name of refrigerant R22
Rated amount kg 1.29 1.06 1.17 1.06
Refrigerant control Capillary tube
Interconnection
pipe
Gas side size mm
Connection type Flare connection
Liquid side size mm
Connection type Flare connection
Maximum length
(One way) 20
Maximum height difference
INDOOR UNIT
Dimensions Height mm 298
Width mm 998
Depth mm 208
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
Air volume High fan m3/h 750 800 750
Medium fan m3/h 650 700 650
Low fan m3/h 530 570 530
Fan motor output W 30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT
Dimensions Height mm 538
Width mm 830
Depth mm 300
Net weight kg 54 50 54 50
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume 2105 2310 1830 2010 1830 2010 2105 2310 1830
Fan motor output W 65 42 65 42
Compressor Model PH250X3-4LM
Output W 1500
Safety device IOL, Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range°C 15 ~ 43 -10 ~ 24 15 ~ 43 15 ~ 43 15 ~ 52 15 ~ 43
RAS-18UKHP-E/18UAH-E RAS-18UKP-E/18UA-E RAS-18UKPX/18UAX RAS-18UKP-AR/18UA-AR RAS-18UKPX-T/18UAX-T
Cooling Heating Cooling Cooling Cooling Cooling
220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V
5.05 5.05 5.80 5.90 5.20 5.25 5.20 5.25 5.20 5.25 5.20
Phase 1Ø
V 220 – 240 220
Hz 50
1920 2040 1800 1950 1870 1950 1870 1950 1920 2040 1870
95 88 94 86 95 88 95 88 95 88 95
220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V
0.2/ 0.2/ 0.2/ 0.2/
9.0 9.5 8.5 9.2
m
m
RAS-18UKHP-E RAS-18UKP-E RAS-18UKPX RAS-18UKP-AR RAS-18UKPX-T
RAS-18UAH-E RAS-18UA-E RAS-18UAX RAS-18UA-AR RAS-18UAX-T
0.2/8.75 0.2/9.0 0.2/8.75 0.2/9.0 0.2/9.0 0.2/9.5 0.2/8.75
Ø
12.7
Ø
6.35
*1
15
*2
8
– 4 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
Note : 1
• Capacity is based on the following temperature conditions.
Condition
Temperature
Indoor unit inlet air temperature
(WB) 19 °C 12 °C
Outdoor unit inlet air temperature
(WB) 24
Note : 2
• Charge refrigerant according to the table below.
RAS-24UKHP-E/24UAH-E
RAS-24UKP-E/24UA-E
Refrigerant
1 No need to charge
*
refrigerant
2 Need to charge
*
refrigerant
RAS-24UKPX/24UAX
RAS-24UKP-AR/24UA-AR
RAS-24UKPX-T/24UAX-T
15m or less
Over 15m up to 25m (20g/m)
Cooling Heating
(DB) 27
(DB) 35
JIS C9612-1994
°C 20 °C
°C 7 °C
°C 6 °C
RAS-18UKHP-E/18UAH-E
RAS-18UKP-E/18UA-E
RAS-18UKPX/18UAX
RAS-18UKP-AR/18UA-AR
RAS-18UKPX-T/18UAX-T
15m or less
Over 15m up to 20m (20g/m)
– 5 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
2-1. Indoor Unit
RAS-24UKHP-E
RAS-24UKP-E
RAS-24UKPX
RAS-24UKP-AR
RAS-24UKPX-T
Back body
Front panel
Grille inlet
298
2. CONSTRUCTION VIEWS
998
208
75
7
51
Knock out system
Outline of indoor unit
55 or more
Minimum distance
to ceiling
298
Connecting pipe (0.39m)
(Flare ø15.88)
20
48
998
763.5
450
Drain hose (0.54m)
Connecting pipe (0.49m)
(Flare ø6.35)
20
10
75
50
56
For stud bolt (ø6)
For stud bolt (ø8 – ø10)
29
41
55
5555
50
Knock out system
57
Wireless remote
control
48
18
75
8
160
ø65
40
ø65
100
Installation
Plate outline
100
– 6 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
2-2. Indoor Unit
RAS-18UKHP-E
RAS-18UKP-E
RAS-18UKPX
RAS-18UKP-AR
RAS-18UKPX-T
Back body
Front panel
Grille inlet
298
998
208
75
7
51
Knock out system
Outline of indoor unit
55 or more
Minimum distance
to ceiling
298
Connecting pipe (0.39m)
(Flare ø12.7)
20
48
998
763.5
450
Drain hose (0.54m)
Connecting pipe (0.49m)
(Flare ø6.35)
20
10
75
50
56
For stud bolt (ø6)
For stud bolt (ø8 – ø10)
29
41
55
5555
50
Knock out system
57
Wireless remote
control
48
18
75
8
160
ø65
40
ø65
100
Installation
Plate outline
100
– 7 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
2-3. Outdoor Unit
RAS-24UAH-E
RAS-24UA-E
RAS-24UAX
RAS-24UA-AR
RAS-24UAX-T
4-ø12x18
for ø8 – ø10
anchor bolt
600 or
more
600
or more
600
Air inlet
Mounting dimension of anchor bolt
100 or
more
52
68
ø25 Drain outlet
120
Air outlet
100
or more
140
600
310
23
Electric
Parts cover
Liquid side
(Flare ø6.35)
Gas side
(Flare ø15.88)
Service Port
12
364
340 (pitch)
12
88
74
Handle
880
A
Detail Drawing
A
600
63.8
340
27
ø12x18 hole
50
340
4-ø12x18 holes
(for ø8 – ø10 anchor bolt)
690
– 8 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
Handle
2-4. Outdoor Unit
RAS-18UAH-E
RAS-18UA-E
RAS-18UAX
600 or more
600
Air inlet
RAS-18UA-AR
RAS-18UAX-T
anchor bolt
4xø11x14
for ø8-ø10
600 or
more
Electric
Parts cover
Liquid side
(Flare ø6.35)
Gas side
(Flare ø12.7)
Installation dimension
120
Air inlet
325
100 or more
Air
outlet
100 or more
8-ø6 holes
(for fixing outdoor unit)
6-ø11x14 holes
(for ø8 – ø10 anchor bolt)
ø25 Drain outlet
344
Service Port
91 54
160
50
90
600
830
A
A Detail Drawing
600
R10
52
325
ø6 hole
ø11x14 hole
Fan guard
Handle
ø420
538
– 9 –
90
300
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
3. WIRING DIAGRAM
3-1. RAS-24UKHP-E/RAS-24UAH-E
COLOR IDENTIFICATION
GRN&YEL
BLK
P04
VARISTOR
SG01
DSA
T6. 3A 250V
F01 FUSE
BLK
WHI
RED
GRN&YEL
CN30
CN31
CN23
BRW
RED
WHI
YEL
BLU
BLK
GRY
PNK
ORN
GRN
R22
:
BROWN
:
RED
:
WHITE
:
YELLOW
:
BLUE
:
BLACK
GRAY
:
PINK
:
ORANGE
:
GREEN &
:
:
GREEN
YELLOW
R09
R21
LOUVER
MOTOR
BLU
6
6
IC04
L01
R01
DB01
C15
C01
MAIN P.C. BOARD
(MCC-821)
CN13
3
4
1
2
5
6
7 8 9
3
4
1
2
5
6
7 8 9
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
3
4
1
2
3
4
1
2
INFRARED RAYS RECEIVE
AND INDICATION PARTS
BLU
5
6
7 8 9
5
6
7 8 9
ORN
PNK
YEL
4
3
5
4
3
5
CN 07
CN03 CN01
10
10
WHI
10
CN25
10
FAN MOTOR
RED
BRW
6
2
1
6
2
1
C02
IC
IC01
2
1
2
1
THERMO
BLK
BLK
SENSOR
(TA)
DC MOTOR
4
3
5
4
3
5
CN 10
T01
C06
1
1
BLK
1
1
IC02
2
2
BLK
EXCHANGER
SENSOR
DC15V
DC0V
DC12V
DC7V
DC0V
HEAT
(TC)
POWER
TERMINAL
BLOCK
POWER SUPPLY
220-240 V~, 50 Hz
i
L
N
BLK
RED
GRN&YEL
REDBLK
CAPACITOR
RED
WHI
PNK
COMPRESSOR
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
FERRITE CORE
S
C
R
BLK
3
1
2
1
2
3
MAGNETIC SWITCH
T
S
W
V
INDOOR
UNIT
OUTDOOR
i
UNIT
GRN&YEL
i
CHASSIS
R
U
A1
52C
A2
CAPACITOR
RED
WHI
RED
FAN MOTOR
BLK
– 10 –
TRANSFORMER
COIL FOR
4 WAY VALVE
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
BLU
YEL
BLK
BLK
1
3
1
3
1
3
5
7
9
1
3
1
313
1
313
MAIN P.C. BOARD (MCC-1275)
1
2
CN06
3
1
CN05
3
TNR
DSA
R74
1
F01
3
T5A 250VAC
5
CN01
7
9
1
3
CN04
5
CN11
CR11
CN02
CR12
CN03
1
1
BLK
TNR
R73
RY07
RY05
3
TNR R96
ICO7
CN07
CN08
DISCHARGE
PIPE
SENSOR (TD)
BLK
1
1
2
3
3
BLK
BLK
1
1
2
3
3
BLK
HEAT
EXCHANGER
SENSOR (TE)
TCTC Service Manual 18/24UKHP-E (EN) File No. SVM-01006
3-2. RAS-24UKP-E/RAS-24UA-E
RAS-24UKPX/RAS-24UAX
RAS-24UKP-AR/RAS-24UA-AR
RAS-24UKPX-T/RAS-24UAX-T
BLK
WHI
RED
GRN&YEL
CN27
COLOR IDENTIFICATION
GRN&YEL
BLK
P04
SG01
DSA
CN30
CN31
11
3
BRW
RED
WHI
YEL
BLU
BLK
GRY
PNK
ORN
R22
VARISTOR
T6.3A 250V
F01 FUSE
BROWN
:
RED
:
WHITE
:
:
YELLOW
:
BLUE
:
BLACK
:
GRAY
:
PINK
:
ORANGE
:
GREEN &
:
GREENGRN
RY04
YELLOW
R09
R21
LOUVER
MOTOR
BLU
6
6
IC04
L01
R01
DB01
C15
C01
MAIN P.C. BOARD
(MCC-821)
CN13
3
4
1
2
5
6
7 8 9
3
4
1
2
5
6
7 8 9
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
3
4
1
2
3
4
1
2
INFRARED RAYS RECEIVE
AND INDICATION PARTS
BLU
5
6
7 8 9
5
6
7 8 9
ORN
PNK
YEL
RED
4
3
5
2
4
3
5
2
CN 07
CN03 CN01
10
10
WHI
10
CN25
10
FAN MOTOR
DC MOTOR
BRW
6
1
6
1
CN 10
C02
IC
IC01
2
1
2
1
BLK
BLK
THERMO
SENSOR
(TA)
5
5
C06
4
4
T01
3
3
1
1
BLK
1
1
IC02
2
2
BLK
EXCHANGER
SENSOR
DC15V
DC0V
DC12V
DC7V
DC0V
HEAT
(TC)
POWER SUPPLY
220 – 240V ~ 50Hz.
220V ~ 50Hz (Only RAS-24UAX-T)
POWER
TERMINAL
BLOCK
BLK
L
N
RED RED
BLK
RED
GRN&YEL
BLK BLK
SPARK KILLER
A1 A2
52C
R
U
S
V
T
W
MAGNETIC SWITCH
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
FERRITE CORE
RED
CAPACITOR
WHI
PNK
– 11 –
3
1
2
3
1
2
GRN&YEL
CHASSIS
GRY
RED
CAPACITOR
S
R
COMPRESSOR
INDOOR
UNIT
OUTDOOR
UNIT
BLK
C
WHI
RED
FAN MOTOR
BLK
TCTC Service Manual 18/24UKHP-E (EN) File No. SVM-01006
3-3. RAS-18UKHP-E/RAS-18UAH-E
COLOR IDENTIFICATION
BRW
ORN
GRN&YEL
SG01
DSA
R22
VARISTOR
T6.3A 250V
F01 FUSE
BLK
WHI
RED
GRN&YEL
BLK
P04
CN30
CN31
CN23
RED
WHI
YEL
BLU
BLK
GRY
PNK
GRN
BROWN
:
RED
:
WHITE
:
YELLOW
:
BLUE
:
BLACK
:
GRAY
:
PINK
:
ORANGE
:
:
GREEN &
:
GREEN
YELLOW
R09
R21
LOUVER
MOTOR
BLU
6
6
IC04
L01
R01
DB01
C15
C01
MAIN P.C. BOARD
(MCC-821)
CN13
3
4
1
2
5
6
7 8 9
3
4
1
2
5
6
7 8 9
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
3
4
1
2
3
4
1
2
INFRARED RAYS RECEIVE
AND INDICATION PARTS
BLU
5
6
7 8 9
5
6
7 8 9
ORN
PNK
YEL
RED
4
3
5
2
4
3
5
2
CN 07
CN03 CN01
10
10
WHI
10
CN25
10
FAN MOTOR
DC MOTOR
BRW
6
1
6
1
CN 10
+
C02
IC
IC01
2
1
2
1
THERMO
BLK
BLK
SENSOR
(TA)
5
5
C06
4
4
T01
3
3
1
1
BLK
2
2
BLK
1
1
DC15V
DC0V
DC12V
DC7V
DC0V
IC02
HEAT
EXCHANGER
SENSOR
(TC)
POWER
TERMINAL
BLOCK
POWER SUPPLY
220-240V~ 50 Hz
L
i
N
BLK
RED
GRN&YEL
REDBLK
RED
WHI
PNK
COMPRESSOR
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
FERRITE CORE
CAPACITOR
S
R
C
BLK
1
2
1
2
MAGNETIC RELAY
11
121314
3
3
i
CHASSIS
INDOOR
UNIT
OUTDOOR
UNIT
GRN&YEL
i
15
A
B
16
RED
WHI
RED
FAN MOTOR
CAPACITOR
BLK
TRANSFORMER
COIL FOR
4 WAY VALVE
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
BLU
YEL
BLK
BLK
1
3
1
3
1
3
5
7
9
1
3
1
313
1
313
MAIN P.C. BOARD (MCC-1275)
1
2
CN06
3
1
CN05
3
TNR
DSA
R74
1
F01
3
T5A 250VAC
5
CN01
7
9
1
3
CN04
5
CN11
CR11
CN02
CR12
CN03
1
1
BLK
TNR
R73
RY07
RY05
3
TNR R96
IC07
CN07
CN08
DISCHARGE
PIPE
SENSOR (TD)
BLK
1
1
2
3
3
BLK
BLK
1
1
2
3
3
BLK
HEAT
EXCHANGER
SENSOR (TE)
– 12 –
TCTC Service Manual 18/24UKHP-E (EN) File No. SVM-01006
3-4. RAS-18UKP-E/RAS-18UA-E
RAS-18UKPX/RAS-18UAX
RAS-18UKP-AR/RAS-18UA-AR
RAS-18UKPX-T/RAS-18UAX-T
BLK
WHI
RED
GRN&YEL
CN30
CN31
CN27
COLOR IDENTIFICATION
GRN&YEL
BLK
P04
11
VARISTOR
SG01
DSA
3
BRW
BROWN
:
RED
RED
:
WHI
WHITE
:
YEL
YELLOW
:
BLU
BLUE
:
BLK
BLACK
:
GRY
GRAY
:
PNK
PINK
:
ORN
ORANGE
:
GREEN &
:
GREENGRN
R22
T6.3A 250V
F01 FUSE
YELLOW
RY04
R09
R21
LOUVER
MOTOR
BLU
6
6
IC04
L01
R01
DB01
C15
C01
MAIN P.C. BOARD
(MCC-821)
CN13
3
4
1
2
5
6
7 8 9
3
4
1
2
5
6
7 8 9
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
3
4
1
2
3
4
1
2
INFRARED RAYS RECEIVE
AND INDICATION PARTS
BLU
5
6
7 8 9
5
6
7 8 9
PNK
YEL
RED
ORN
4
3
5
2
1
4
3
5
2
1
CN 07
+
CN03 CN01
1
10
1
10
WHI
BLK
10
CN25
10
FAN MOTOR
DC MOTOR
BRW
4
6
5
4
6
5
CN 10
T01
C02
C06
IC
IC01
2
2
BLK
THERMO
SENSOR
(TA)
3
3
1
1
BLK
2
2
BLK
1
1
DC15V
DC0V
DC12V
DC7V
DC0V
IC02
HEAT
EXCHANGER
SENSOR
(TC)
POWER SUPPLY
220 – 240V~ 50Hz
220V ~ 50Hz (Only RAS-18UAX-T)
POWER
TERMINAL
BLOCK
BLK
L
N
GRN&YEL
RED
BLK
CAPACITOR CAPACITOR
RED
PNK
COMPRESSOR
BLK
RED
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
MAGNETIC RELAY
11
121314
S
C
BLK
R
3
1
2
3
1
2
BLK
BLK
SPARK KILLER
RED
15
A
B
16
RED
WHIWHI
RED
INDOOR
UNIT
OUTDOOR
UNIT
GRN&YEL
CHASSIS
GRY
BLK
FAN MOTOR
– 13 –
TCTC Service Manual 18/24UKHP-E (EN) File No. SVM-01006
4. SPECIFICATION OF ELECTRICAL PARTS
4-1. Indoor Unit
RAS-24UKHP-E, RAS-18UKHP-E
No. Parts name Type Specifications
1 Fan motor (for indoor) ICF-340-30-1 Output (Rated) 30W, 220-240V
Thermo sensor
2
(TA-sensor)
3 DC-DC transformer (T01) SWT-58A DC 390V, Secondary DC 15V, 12V, 7V
4 Microcomputer TMP87CM40AN
Heat exchanger sensor
5
(TC-sensor)
6 Line filter (L01) SS11V-R07190 19mH, AC0.7A
7 Diode (DB01) D3SBA60 4A, 600V
8 Capacitor (C02) KMH450VNSN120M25C 120µF, 450V
9 Fuse (F01) TSCR T6.3A, 250V
10 Power supply IC (IC01) MA8920 5A, 900V
11 Varistor (R21, R22) 15G561K 560V
12 Resistor (R01) RF-5TK4R7 4.7 , 5W
——— 10k at 25 °C
——— 10k at 25 °C
13 Louver motor MP35EA12 Output (Rated) 2W,10poles, 1phase, DC 12V
4-2. Outdoor Unit
RAS-24UAH-E
No. Parts name Type Specifications
Output (Rated) 2200W, 2poles, 1phase, 220 – 240V, 50Hz
1 Compressor PA290X3F-4MS
2 Fan motor (for outdoor) MMF-230-65F
3 Running capacitor (for fan motor) SK45FMP AC 450V, 3.5µF
Running capacitor
4
(for compressor)
5 Solenoid coil (for 4-way valve) VHV AC 220 – 240V
6 Thermo sensor TE / TD 10kΩ at 25°C / 50k at 25°C
7 Magnetic switch CLK-35J 220 – 240V, 50Hz
SK42CMP45U1 AC 420V, 45µF
Winding resistance ( )
(at 20°C)
Output (Rated) 65W, 6poles,1phase, 220 – 240V, 50Hz
Winding resistance ( )
(at 20°C)
Red-Black White-Black
1.07 2.20
Red-Black White-Black
71.2 139.0
8 Transformer FT67 220 – 240V
9 Microcomputer TMP47C840N
10 Varistor (R73, 74, 86) 15G471K 470V
11 Fuse (F01) MT3 T5A, 250V
– 14 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
4-3. Outdoor Unit
RAS-18UAH-E
No. Parts name Type Specifications
Output (Rated) 1500W, 2poles, 1phase, 220 – 240V, 50Hz
1 Compressor PA225X3F-4L
2 Fan motor (for outdoor) HF-240-42A1
3 Running capacitor (for fan motor) SK45FMP02U2 AC 450V, 2µF
Running capacitor
4
(for compressor)
5 Solenoid coil (for 4-way valve) VHV AC 220 – 240V
6 Thermo sensor TE / TD 10k at 25°C / 50k at 25°C
7 Magnetic Relay VC20FA 220
8 Transformer FT67 220
9 Microcomputer TMP47C840N
10 Varistor (R73, 74, 86) 15G471K 470V
SK42CMP45U1 AC 420V, 45µF
Winding resistance ( )
(at 20°C)
Output (Rated) 42W, 6poles,1phase, 220 – 240V, 50Hz
Winding resistance ( )
(at 20°C)
–
240V, 50Hz, 1P1a
–
240V
Red-Black White-Black
Red-Black White-Black
176.2 290.5
1.35 2.68
11 Fuse (F01) MT3 T5A, 250V
– 15 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
4-4. Indoor Unit
RAS-24UKP-E, 24UKPX, 24UKP-AR, 24UKPX-T
RAS-18UKP-E, 18UKPX, 18UKP-AR, 18UKPX-T
No. Parts name Type Specifications
1 Fan motor (for indoor) ICF-340-30-1 Output (Rated) 30W, 220-240V
Thermo sensor
2
(TA-sensor)
3 DC-DC transformer (T01) SWT-58A DC 390V, Secondary DC 15V, 12V, 7V
4 Microcomputer TMP87CM40AN
Heat exchanger sensor
5
(TC-sensor)
6 Line filter (L01) SS11V-R07190 19mH, AC 0.7A
7 Diode (DB01) D3SBA60 4A, 600V
8 Capacitor (C02) KMH450VNSN120M25C 120µF, 450V
9 Fuse (F01) TSCR T6.3A, 250V
Relay (for outdoor fan motor,
10
solenoid coil) (RY04)
11 Power supply IC (IC01) MA8920 5A, 900V
12 Varistor (R21, R22) 15G561K 560V
——— 10k at 25°C
°
——— 10k at 25
AJQ1341 Coil DC 12V, 33mA, Rated 1A, AC 250V
C
13 Resistor (R01) RF-5TK4R7 4.7 , 5W
14 Louver motor MP35EA12 Output (Rated) 2W,10poles, 1phase, DC 12V
4-5. Outdoor Unit
RAS-24UA-E, 24UAX, 24UA-AR, 24UAX-T
No. Parts name Type Specifications
Output (Rated) 2200W, 2poles, 1phase, 220 – 240V, 50Hz
1 Compressor PA290X3F-4MS
2 Fan motor (for outdoor)
2 Winding resistance ( )
3 Running capacitor (for fan motor) SK45FMP AC 450V, 3.5µF
Running capacitor
4
(for compressor)
5 Bimetal thermostat CS-7C Open 130 ± 5°C, Close 70 ± 10°C
6 Magnetic switch CLK-35J 220 – 240V, 50Hz
MMF-230-65C
SK42CMP45U1 AC 420V, 45µF
Winding resistance ( )
(at 20°C)
Output (Rated) 65W, 6poles,1phase, 220 – 240V, 50Hz
(at 20°C)
Red-Black White-Black
1.07 2.20
Red-Black White-Black
71.2 139.0
– 16 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
4-6. Outdoor Unit
RAS-18UA-E, 18UAX, 18UA-AR, 18UAX-T
No. Parts name Type Specifications
Output (Rated) 1500W, 2poles, 1phase, 220–240V, 50Hz
1 Compressor PA225X3F-4L
2 Fan motor (for outdoor) HF-240-42A
3 Running capacitor (for fan motor) SK45FMP02U2 AC 450V, 2µF
Running capacitor
4
(for compressor)
5 Bimetal thermostat CS-7C Open 130 ± 5°C, Close 70 ± 10°C
SK42CMP45U1 AC 420V, 45µF
Winding resistance ( )
(at 20°C)
Output (Rated) 42W, 6poles,1phase, 220–240V, 50Hz
Winding resistance ( )
(at 20°C)
Red-Black White-Black
Red-Black White-Black
176.2 290.5
1.35 2.68
6 Magnetic Relay VC20FA 220
–
240V, 50Hz, 1P1a
– 17 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
5. REFRIGERATION CYCLE DIAGRAM
5-1. RAS-24UKHP-E/24UAH-E
Indoor unit
Cooling
0.39m
(Connecting pipe)
15.88
O.D.:15.88mm O.D.:6.35mm
Cooling
Heating
Heating
P
Packed valve
( 15.88 )
Gas container connection (Reinstall etc.)
Heating
4-way valve
Muffler
Cooling
Compressor
Accumulator
PH310X3-4MM
Condenser
Evaporator
Cross flow fan
T
0.49m
(Connecting pipe)
6.35
Packed valve
( 6.35)
Capillary tube
0.8x500S
Liquid tank
25x140S
Capillary tube
2.4x1400S
Refrigerant
R-22 1.63kg
Fan Speed
(indoor)
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
50Hz
Cooling
Heating
Propeller fan
Outdoor unit
Standard
Pressure P
(MPaG)
Mark ( ) means check points of Gas Leak
Surface temp. of heat
exchanger interchanging
pipe T (°C)
Standard 0.4 43.0 High 20/– 7/6
Heating High temperature*1 0.5 ~ 0.7 52.0 ~ 59.0 Low 27/– 24/18
Low temperature 0.3 36.0 High 20/– –10/–10
Standard 0.4 11.0 High 27/19 35/24
Cooling High temperature 0.5 12.0 High 32/23 43/26
Low temperature 0.3 1.0 Low 21/15 21/15
Note :Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
*1 : During heating overload, the high temperature limit control operation is included.
– 18 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
5-2. RAS-24UKP-E/24UA-E
RAS-24UKPX/24UAX
RAS-24UKP-AR/24UA-AR
RAS-24UKPX-T/24UAX-T
Indoor unit
Cooling
0.39m
(Connecting pipe)
15.88
O.D.:15.88mm O.D.:6.35mm
Cooling
P
Packed valve
( 15.88 )
Gas container connection (Reinstall etc.)
Cooling
Compressor
Accumulator
PH280X3-4MS
Condenser
Evaporator
Cross flow fan
T
0.49m
(Connecting pipe)
6.35
Packed valve
( 6.35)
Capillary tube
0.8x400S
Capillary tube
2.4x1400S
Liquid tank
25x140S
Refrigerant
R-22 1.63kg
Fan Speed
(indoor)
Ambient temp.
conditions DB/WB
Indoor Outdoor
50Hz
Cooling
Propeller fan
Outdoor unit
Standard
Pressure P
(MPaG)
Mark ( ) means check points of Gas Leak
Surface temp. of heat
exchanger interchanging
pipe T (°C)
Standard 0.4 11.0 High 27/19 35/24
Cooling
High temperature 0.7 12.0 High 32/23 52/31*
Low temperature 0.3 1.0 Low 21/15 21/15
* SASO Standard’s condition
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
(°C)
– 19 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
5-3. RAS-18UKHP-E/18UAH-E
Indoor unit
Cooling
0.49m
(Connecting pipe)
12.7
O.D.:12.7mm O.D.:6.35mm
Cooling
Heating
Heating
P
Packed valve
( 12.7)
Gas container connection (Reinstall etc.)
Heating
4-way valve
Muffler
Cooling
Compressor
Accumulator
PH250X3-4LM
Evaporator
Cross flow fan
T
0.39m
(Connecting pipe)
6.35
Packed valve
( 6.35)
Capillary tube
0.8x500S
Capillary tube
1.2x1500S
Capillary tube
2.0x1200S
Condenser
Refrigerant
R-22 1.29kg
Fan Speed
(indoor)
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
50Hz
Cooling
Heating
Propeller fan
Outdoor unit
Standard
Pressure P
(MPaG)
Mark ( ) means check points of Gas Leak
Surface temp. of heat
exchanger interchanging
pipe T (°C)
Standard 0.4 45.0 High 20/– 7/6
Heating High temperature*1 0.5 ~ 0.6 49.0 ~ 58.0 Low 27/– 24/18
Low temperature 0.3 34.0 High 20/––10/–10
Standard 0.4 10.0 High 27/19 35/24
Cooling High temperature 0.5 15.0 High 32/23 43/26
Low temperature 0.3 1.0 Low 21/15 21/15
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
*1 : During heating overload, the high temperature limit control operation is included.
– 20 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
5-4. RAS-18UKP-E/18UA-E
RAS-18UKPX/18UAX
RAS-18UKPX-T/18UAX-T
Indoor unit
Evaporator
T
(Connecting pipe)
0.39m
12.7
Cross flow fan
O.D.:12.7mm O.D.:6.35mm
Compressor
P
Packed valve
( 12.7)
PH250X3-4LM
Muffler
Condenser
Propeller fan
Outdoor unit
Packed valve
( 6.35)
Capillary tube
2.4x1000
Refrigerant
R-22 1.06 kg
Mark ( ) means check points of Gas Leak
S
0.49m
(Connecting pipe)
6.35
Ambient temp.
conditions DB/WB
Indoor Outdoor
50Hz
Standard
Pressure P
(MPaG)
Surface temp. of heat
exchanger interchanging
pipe T (°C)
Fan Speed
(indoor)
Standard 0.4 10.0 High 27/19 35/24
Cooling
High temperature 0.5 13.0 High 32/23 43/26
Low temperature 0.3 2.0 Low 21/15 21/15
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
(°C)
– 21 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
5-5. RAS-18UKP-AR/18UA-AR
Indoor unit
Evaporator
(Connecting pipe)
0.39m
12.7
O.D.:12.7mm O.D.:6.35mm
Compressor
P
Packed valve
( 12.7)
PH250X3-4LM
Cross flow fan
Condenser
Propeller fan
T
Capillary tube
0.8x900
S
Packed valve
( 6.35)
Capillary tube
2.0x1000
Refrigerant
R-22 1.17 kg
S
0.49m
(Connecting pipe)
6.35
Mark ( ) means check points of Gas Leak
Ambient temp.
Fan Speed
conditions DB/WB
(indoor)
Indoor Outdoor
50Hz
Outdoor unit
Standard
Pressure P
(MPaG)
Surface temp. of heat
exchanger interchanging
pipe T (°C)
Standard 0.4 10.0 High 27/19 35/24
Cooling
High temperature 0.6 13.0 High 32/23 52/31
Low temperature 0.3 2.0 Low 21/15 21/15
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
(°C)
– 22 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
6. CONTROL BLOCK DIAGRAM
6-1. RAS-24UKHP-E, 18UKHP-E
Indoor Unit Control Panel
Heat Exchanger Sensor
Temperature Sensor
M.C.U.
Functions
• Louver Control
• 3-minute Delay at Restart for Compressor
Operation
Display
Timer
Display
Infrared Rays Signal Receiver
Infrared
Initiallizing Circuit
Rays
Clock Frequency
Oscillator Circuit
Power Supply
Remote
Circuit
Control
Noise Filter
From Outdoor Unit
REMOTE CONTROL
• Motor Revolution Control
• Processing
(Temperature Processing)
• Timer
• Serial Signal Communication
Louver ON/OFF Signal
Serial Signal Transmitter/Receiver
Serial Signal Communication
Remote Control
Louver Driver
Infrared Rays
Filter Sign
Display
PRE DEF.
Sign Display
Hi Power Sign
Display
Indoor Fan
Motor
Louver Motor
Operation (START/STOP)
Operation Mode Selection
AUTO, COOL, DRY, HEAT, FAN ONLY
Temperature Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver Auto Swing
Louver Direction Setting
ECO
Hi power
Filter Reset
Sleep Timer Setting
– 23 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
6-2. RAS-24UKP-E, 24UKPX, 24UKP-AR, 24UKPX-T
RAS-18UKP-E, 18UKPX, 18UKP-AR, 18UKPX-T
Indoor Unit Control Panel
M.C.U.
Heat Exchanger Sensor
Functions
• Louver Control
Operation
Display
Temperature Sensor
Infrared Rays Signal Receiver
Initiallizing Circuit
Infrared
Rays
Clock Frequency
Oscillator Circuit
Power Supply
Remote
Circuit
Control
Noise Filter
From Outdoor Unit
• 3-minute Delay at Restart for Compressor
• Motor Revolution Control
• Processing
(Temperature Processing)
• Timer
Outdoor unit
ON/OFF Signal
Relay Driver
Relay RY04
Outdoor Unit
Louver ON/OFF Signal
Louver Driver
Timer
Display
Filter Sign
Display
Fan Only
Sign Display
Hi Power Sign
Display
Indoor Fan
Motor
Louver Motor
REMOTE CONTROL
Infrared
Rays
Remote Control
Operation (START/STOP)
Operation Mode Selection
AUTO, COOL, DRY, FAN ONLY
Temperature Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver Auto Swing
Louver Direction Setting
ECO
Hi power
Filter Reset
Sleep Timer Setting
– 24 –
TCTC Service Manual 24/18UKHP-E (EN) File No. SVM-01007
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