Toshiba RAS-24UFHP-ES, RAS-18UA-ES, RAS-24UFP-ES SERVICE MANUAL
FILE NO. SVM-02009
SERVICE MANUAL
AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18UFHP-ES / RAS-18UAH-ES
RAS-18UFP-ES / RAS-18UA-ES
RAS-24UFHP-ES / RAS-24UAH-ES
RAS-24UFP-ES / RAS-24UA-ES
18 Class
24 Class
Apr., 2002
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (RAS-18UAH-ES, RAS-18UA-ES)
2-3 Outdoor Unit (RAS-24UAH-ES, RAS-24UA-ES)
3. WIRING DIAGRAM
3-1 RAS-18UFHP-ES / RAS-18UAH-ES
3-2 RAS-18UFP-ES / RAS-18UA-ES
3-3 RAS-24UFHP-ES / RAS-24UAH-ES
3-4 RAS-24UFP-ES / RAS-24UA-ES
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit (RAS-18UAH-ES)
4-3 Outdoor Unit (RAS-18UA-ES)
4-4 Outdoor Unit (RAS-24UAH-ES)
4-5 Outdoor Unit (RAS-24UA-ES)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-18UFHP-ES / RAS-18UAH-ES
5-2 RAS-18UFP-ES / RAS-18UA-ES
5-3 RAS-24UFHP-ES / RAS-24UAH-ES
5-4 RAS-24UFP-ES / RAS-24UA-ES
6. CONTROL BLOCK DIAGRAM
6-1 RAS-18UFHP-ES, RAS-24UFHP-ES
6-2 RAS-18UFP-ES, RAS-24UFP-ES
7. OPERATION 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
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 How to Use Drain Pump Kit of Option
8-8 Others
FILE NO. SVM-02009
– 1 –
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. PARTS REPLACEMENT
10-1 Indoor Unit
10-2 Outdoor Unit (RAS-18UAH-ES, RAS-18UA-ES)
10-3 Outdoor Unit (RAS-24UAH-ES, RAS-24UA-ES)
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E-Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit (RAS-18UAH-ES)
11-4 Outdoor Unit (RAS-18UA-ES)
11-5 Outdoor Unit (RAS-24UAH-ES)
11-6 Outdoor Unit (RAS-24UA-ES)
FILE NO. SVM-02009
• This air conditioner is charged with HFC (R-410A)
that does not deplete the Ozone lay er.
• This air conditioner requires special service tools
for the refrigerant R-410A.
– 2 –
1. SPECIFICATIONS
FILE NO. SVM-02009
MODEL
ITEM
Capacity 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V
kW 5.00 5.10 5.70 5.75 5.15 5.25 6.20 6.30 7.00 7.10 6.40 6.45
Phase 1∅
Power source V 220 – 240
Hz 50
Power consumption W 1960 2010 1830 1880 1875 1925 2515 2570 2430 2530 2540 2615
Power factor % 98 96 98 96 97 93 96 92 96 91 94 90
Running current
Starting current A 47 54
Moisture removal lit/h 2.0 2.5 2.7
Noise
Refrigerant
Refrigerant control Capillary tube
Interconnection Connection type Flare connection
pipe Maximum length
INDOOR UNIT RAS-18UFHP-ES RAS-18UFP-ES RAS-24UFHP-ES RAS-24UFP-ES
Dimensions Height mm 633
Net weight kg 23
Evaporator type Finned tube
Indoor fan type Multi blade fan
Air volume Medium fan m3/h 680 700 680 750 760 750
Fan motor output W 50
Air filter Washable -filter
OUTDOOR UNIT RAS-18UAH-ES RAS-18UA-ES RAS-24UAH-ES RAS-24UA-ES
Dimensions Height mm 538 690
Net weight kg 51 50 67 64
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2105 2310 2150 2310 1830 2010 3380 3560 3380 3560 3380 3560
Fan motor output W 42 65
Compressor
Safety device IOL, Td Sensor
Louver type Automatic louver
Usable outdoor temperature range°C 15 ~ 43 –10 ~ 24 15 ~ 43 15 ~ 43 -10 ~ 24 15 ~ 43
Indoor A 0.4 0.45
Outdoor A 8.60 8.30 7.70 7.60 8.30 8.15 11.35 11.20 11.10 11.15 11.85 11.70
Indoor (H/M/L) db 43/39/36 46/42/37
Outdoor db 51 52 52 53 51 52 56 57 57 58 56 57
Name of refrigerant R-410A
Rated amount kg 1.3 1.2 1.6
Gas side size
Connection type Flare connection
Liquid side size
(One way) 20*
Maximum height
difference
Width mm 1093
Depth mm 208
High fan m3/h 800 830 800 900 930 900
Low fan m3/h 580 650 580 550 660 650
Width mm 830 880
Depth mm 300 310
Model PA225X3F-4L PA290X3F-4MS
Output W 1500 2200
mm
mm
m
m8 10
RAS-18UFHP-ES RAS-18UFP-ES RAS-24UFHP-ES RAS-24UFP-ES
RAS-18UAH-ES RAS-18UA-ES RAS-24UAH-ES RAS-24UA-ES
Cooling Heating Cooling Cooling Heating Cooling
∅12.70
∅6.35
1
15*
2
IOL, Case Thermo
IOL, Td Sensor
25*
2
IOL, Case Thermo
– 3 –
Note : 1
• Capacity is based on the following temperature conditions.
FILE NO. SVM-02009
Condition
Temperature
Indoor unit inlet air temperature
Outdoor unit inlet air temperature
Note : 2
• Charge refrigerant according to the table below.
Refrigerant
*1 No need to charge
refrigerant
*2 Need to charge
refrigerant
RAS-18UFHP-ES / RAS-18UAH-ES RAS-24UFHP-ES / RAS-24UAH-ES
RAS-18UFP-ES / RAS-18UA-ES RAS-24UFP-ES / RAS-24UA-ES
15m or less 15m or less
Over 15m up to 20m (20g/m) Over 15m up to 25m (20g/m)
JIS C9612-1994
Cooling Heating
(DB) 27°C 20°C
(WB) 19°C 12°C
(DB) 35°C 7°C
(WB) 24°C 6°C
– 4 –
2-1. Indoor Unit
FILE NO. SVM-02009
2. CONSTRUCTION VIEWS
Front panel
1093
UNDER CEILING & CONSOLE INSTALLATION
208
633
Knock out system
Grille air inlet
Back Body
For stud bolt
(∅8 - ∅10)
For stud bolt (∅6)
200 Min
330165
∅74
1093
1015
742
450
20 20
– 5 –
Installation plate
Mount plate
M10 Suspention bolt
633
460
70 Min
Wireless remote control
Knock out system
160
57 18
2-2. Outdoor Unit (RAS-18UAH-ES, RAS-18UA-ES)
FILE NO. SVM-02009
Handle
325
∅11x14 hole
A Detail Drawing
600
R10
∅6 hole
325
∅420
538
52
A
Fan guard
120
∅25 Drain oulet
8-∅6 holes
(For fixing outdoor unit)
6-∅11x14 holes
(For ∅8 - ∅10 anchor bolt)
100 or more
325
100 or more
300
Air inlet
600
Air
inlet
or more
Installation dimension
90 600
600 or more
Service Port
4x∅11x14
for ∅8-∅10
anchor bolt
91 54
90 50
830 160
Electric
Parts cover
Liquid side
(Flare ∅6.35)
Gas side
(Flare ∅12.70)
344
– 6 –
2-3. Outdoor Unit (RAS-24UAH-ES, RAS-24UA-ES)
FILE NO. SVM-02009
600
50
27
340
A Detail Drawing
∅12x18 hole
A
64
340
4-∅12x18 holes
(for ∅8 - ∅10 anchor bolt)
690
120
∅25 Drain outlet
600
880
5268
140
Handle
88
74
600
100 or more
100 or more
Air outlet
Mounting dimension of anchor bolt
600
or more
Handle
600 or more
4-∅12x18
for ∅8 - ∅10
anchor bolt
12
31023
340 (pitch)
364
Electric
Parts cover
Liquid side
(Flare ∅6.35)
Gas side
(Flare ∅12.70)
Service Port
12
– 7 –
3. WIRING DIAGRAM
3-1. RAS-18UFHP-ES / RAS-18UAH-ES
FILE NO. SVM-02009
COLOR IDENTIFICATION
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
BLK
CN30
CN31
CN23
P04
SG01
R22
FUSE
F01
250VAC
T6.3A
J401
2
1
FOR FLOAT SWITCH
(OPTION)
When you use float
switch you should
cut J401
LOUVER
MOTOR
R09 R507
R21
CN402 CN401 CN11
IC04
C15
RY401
R405
CR401
1 1232 3
FOR DRAIN PUMP
(OPTION)
CN07
L01
123
ORN
RED
PNK
YEL
BRW
BLU
654
654
C501
321
321
MAIN PCB
MCC-865A
RY501
5 3
5 311
BRW
GRY
YEL
CN25
CN13
R01
C01
CR502
CR501
CN10 BLK
WHI
1 1
RED
3 3
BLK
6 6
3 3
2 2
1 1
INFRARED RAYS RECEIVE
AND INDICATION PARTS
123
456
BLU
DB01
BLU
C02
DC12V
DC5V
IC03
WHI
RED
PUR
456
BLU
BLU
456
456
BLU
GRY
BLU
789
789
BLU
789
789
BLU
BLU
POWER SUPPLY
123
BLU
123
123
R506
10
10
WHI
10
10
CIRCUIT
CN100
CN03
1 1
2 2
CN01
1 1
2 2
CN101
WHI
11
GRY
22
GRY
33
BLK
BLK
BLK
BLK
FAN
MOTOR
SWITCH
1
PCB
2
3
MCC-865B
THERMO
SENSOR
(TA)
HEAT
EXCHANGER
SENSOR
(TC)
POWER
TERMINAL
BLOCK
POWER SUPPLY
220-240V~, 50 Hz
L N
BLK
RED
GRN&YEL
REDBLK
RED
WHI
PNK
COMPRESSOR
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
FERRITE CORE
RELAY
CAPACITOR
S
R
TRANSFORMER
1 2 3
INDOOR
UNIT
OUTDOOR
1 2 3
UNIT
GRN&YEL
CHASSIS
11
12
C
BLK
15
13
14
A
B
16
CAPACITOR
RED
WHI
RED
BLK
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
BLU
YEL
BLK
BLK
COIL FOR
4 WAY VALVE
1 1
3 3
1
3
1
3
5
7
9
1
3
1
313
1
313
MAIN P.C. BOARD (MCC-1275)
CN06
2
1
CN05
3
TNR
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)
FAN MOTOR
– 8 –
3-2. RAS-18UFP-ES / RAS-18UA-ES
FILE NO. SVM-02009
COLOR IDENTIFICATION
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
BLK
CN30
CN31
P04
CN27
11
33
SG01
R22
F01
FUSE
T6.3A
250VAC
J401
21 1 1232
CN402 CN401 CN11
FOR FLOAT SWITCH
(OPTION)
When you use float
switch you should
cut J401
R09 R507
R21
CR02
RY04
LOUVER
MOTOR
FOR DRAIN PUMP
IC04
RY401
R405
CR401
(OPTION)
C15
ORN
RED
PNK
YEL
BRW
BLU
654
L01
123
654
C501
321
321
MAIN PCB
MCC-865A
RY501
5 3
5 311
BRW
GRY
YEL
BLK
CN07
3
INFRARED RAYS RECEIVE
AND INDICATION PARTS
123
CN25
123
BLU
BLU
123
CN13
123
R01
DB01
C01
CR502
DC12V
DC5V
CR501
CN10 BLK
WHI
RED
IC03
R506
1 1
3 3
6 6
3 3
2 2
1 1
BLU
WHI
RED
456
456
BLU
456
456
C02
PUR
GRY
BLU
BLU
BLU
789
789
BLU
789
789
BLU
10
10
BLU
WHI
10
10
POWER SUPPLY
CIRCUIT
CN100
CN03
1 1
2 2
CN01
1 1
2 2
WHI
11
GRY
22
GRY
33
BLK
BLK
BLK
BLK
FAN
MOTOR
CN101
1
2
3
MCC-865B
THERMO
SENSOR
(TA)
HEAT
EXCHANGER
SENSOR
(TC)
SWITCH
PCB
POWER SUPPLY
220 - 240V~, 50Hz
POWER
TERMINAL
BLOCK
BLK
INDOOR
TERMINAL
BLOCK
OUTDOOR
L
N
BLK
RED
GRN&YEL
RED
BLK
TERMINAL
BLOCK
RELAY
11
121314
CAPACITOR CAPACITOR
RED
S
C
PNK
BLK
R
COMPRESSOR
1
2
1
2
BLK
SPARK KILLER
RED
15
A
B
16
RED
WHIWHI
RED
FAN MOTOR
3
3
GRN&YEL
CHASSIS
BLK
INDOOR
UNIT
OUTDOOR
UNIT
ORN
BLK
ORN
THERMOSTAT
– 9 –
3-3. RAS-24UFHP-ES / RAS-24UAH-ES
FILE NO. SVM-02009
COLOR IDENTIFICATION
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
CN30
CN31
BLK
P04
CN23
SG01
R22
FUSE
F01
250VAC
T6.3A
J401
2
1
FOR FLOAT SWITCH
(OPTION)
When you use float
switch you should
cut J401
LOUVER
MOTOR
R09 R507
R21
CN402 CN401 CN11
IC04
C15
RY401
R405
CR401
1 1232 3
FOR DRAIN PUMP
(OPTION)
CN07
ORN
RED
PNK
YEL
BRW
BLU
L01
123
654
654
C501
321
321
MAIN PCB
MCC-865A
RY501
5 3
5 311
BRW
GRY
YEL
CN25
CN13
R01
C01
CR502
CR501
CN10 BLK
WHI
1 1
RED
3 3
BLK
6 6
3 3
2 2
1 1
INFRARED RAYS RECEIVE
AND INDICATION PARTS
123
456
BLU
DC12V
DC5V
IC03
BLU
WHI
RED
456
BLU
456
456
C02
PUR
GRY
BLU
BLU
BLU
789
789
BLU
BLU
789
789
BLU
POWER SUPPLY
123
BLU
123
123
DB01
R506
10
10
WHI
10
10
CIRCUIT
CN100
CN03
1 1
2 2
CN01
1 1
2 2
CN101
WHI
11
GRY
22
GRY
33
BLK
BLK
BLK
BLK
FAN
MOTOR
SWITCH
1
PCB
2
3
MCC-865B
THERMO
SENSOR
(TA)
HEAT
EXCHANGER
SENSOR
(TC)
POWER
TERMINAL
BLOCK
POWER SUPPLY
220-240V~, 50 Hz
L N
BLK
RED
GRN&YEL
REDBLK
MAGNETIC RELAY
RED
WHI
PNK
COMPRESSOR
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
FERRITE CORE
CAPACITOR
S
R
TRANSFORMER
1 2 3
INDOOR
UNIT
OUTDOOR
1 2 3
UNIT
GRN&YEL
CHASSIS
T
R
S
A1
52C
V
W
C
BLK
A2
U
CAPACITOR
RED
WHI
RED
BLK
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
BLU
YEL
BLK
BLK
COIL FOR
4 WAY VALVE
1 1
3 3
1
3
1
3
5
7
9
1
3
1
313
1
313
MAIN P.C. BOARD (MCC-1275)
CN06
2
1
CN05
3
TNR
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)
FAN MOTOR
– 10 –
3-4. RAS-24UFP-ES / RAS-24UA-ES
FILE NO. SVM-02009
COLOR IDENTIFICATION
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
BLK
CN30
CN31
P04
CN27
11
33
SG01
F01
T6.3A
When you use float
R09 R507
R22
FUSE
250VAC
R21
CR02
J401
21 1 1232
CN402 CN401 CN11
FOR FLOAT SWITCH
(OPTION)
switch you should
cut J401
RY04
LOUVER
MOTOR
FOR DRAIN PUMP
IC04
RY401
R405
CR401
(OPTION)
C15
3
CN07
ORN
RED
PNK
YEL
BRW
BLU
L01
123
654
654
C501
321
321
MAIN PCB
MCC-865A
RY501
5 3
5 311
BRW
GRY
YEL
CN25
CN13
R01
C01
CR502
CR501
CN10 BLK
WHI
1 1
RED
3 3
BLK
6 6
3 3
2 2
1 1
INFRARED RAYS RECEIVE
AND INDICATION PARTS
123
456
BLU
DC12V
DC5V
IC03
BLU
WHI
RED
456
BLU
456
456
C02
PUR
GRY
BLU
BLU
BLU
789
789
BLU
789
789
BLU
BLU
POWER SUPPLY
123
BLU
123
123
DB01
R506
10
10
WHI
10
10
CIRCUIT
CN100
CN03
1 1
2 2
CN01
1 1
2 2
CN101
WHI
11
GRY
22
GRY
33
BLK
BLK
BLK
BLK
FAN
MOTOR
SWITCH
1
PCB
2
3
MCC-865B
THERMO
SENSOR
(TA)
HEAT
EXCHANGER
SENSOR
(TC)
POWER SUPPLY
220 - 240V~, 50Hz
220V ~, 50Hz (For RAS-18UAX-T2,
RAS-24UAX-T)
POWER
TERMINAL
BLOCK
L
N
BLK
RED
GRN&YEL
BLK
SPARK KILLER
A1 A2
BLK
52C
RED RED
R
S
T W
MAGNETIC RELAY
INDOOR
TERMINAL
BLOCK
OUTDOOR
TERMINAL
BLOCK
FERRITE CORE
(For model RAS-24UA series)
BLK
RED
U
CAPACITOR
V
1
1
RED
WHI
PNK
COMPRESSOR
3
2
OUTDOOR
3
2
UNIT
GRN&YEL
CHASSIS
ORN
THERMOSTAT
ORN
CAPACITOR
S
R
– 11 –
INDOOR
UNIT
C
BLK
WHI
RED
FAN MOTOR
BLK
FILE NO. SVM-02009
4. SPECIFICATION OF ELECTRICAL PARTS
4-1. Indoor Unit
No. Parts name Type Specifications
1 Fan motor (for indoor) AFP-220-50-4A Output (Rated) 50W, 220-240V
2 Thermo sensor (TA-sensor) ——— 10kΩ at 25°C
3 DC-DC transformer (T01) SWT-47 DC 390V, Secondary DC 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) KMH400VSSN47M22S 47µF, 400V
9 Fuse (F01) TSCR T6.3A, 250V
10 Varistor (R21, R22) 15G561K 560V
11 Resistor (R01) RF-2TK5R6 5.6Ω, 2W
12 Louver motor MP35EA12
——— 10kΩ at 25°C
Output (Rated) 2W,10poles, 1phase,
DC 12V
4-2. Outdoor Unit (RAS-18UAH-ES)
No. Parts name Type Specifications
Output (Rated) 1500W, 2poles, 1phase, 220 – 240V, 50Hz
1 Compressor PA225X3F-4L Winding resistance (Ω) Red-Black White-Black
(at 20°C) 1.35 2.68
Output (Rated) 65W, 6poles, 1phase, 220 – 240V, 50Hz
2 Fan motor (for outdoor) HF-240-42A1 Winding resistance (Ω) Red-Black White-Black
(at 20°C) 176.2 290.5
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
Solenoid coil
5
(for 4-way valve)
6 Thermo sensor TE / TD 10kΩ at 25°C / 50kΩ at 25°C
7 Relay VC20FA 220 – 240V, 50Hz, 1P1a
8 Transformer FT67 220 – 240V
9 Microcomputer TMP47C840N
10 Varistor (R73, 74, 86) 15G471K 470V
11 Fuse (F01) MT3 T5A, 250V
SK45FMP02U2 AC 450V, 2µF
SK42CMP45U1 AC 420V, 45µF
VHV AC 220 – 240V
– 12 –
FILE NO. SVM-02009
4-3. Outdoor Unit (RAS-18UA-ES)
No. Parts name Type Specifications
Output (Rated) 1500W, 2poles, 1phase, 220 – 240V, 50Hz
1 Compressor PA225X3F-4L Winding resistance (Ω) Red-Black White-Black
(at 20°C) 1.35 2.68
Output (Rated) 42W, 6poles, 1phase, 220 – 240V, 50Hz
2 Fan motor (for outdoor) HF-240-42A Winding resistance (Ω) Red-Black White-Black
(at 20°C) 176.2 290.5
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
5 Relay VC20FA 220 – 240V, 50Hz, 1P1a
4-4. Outdoor Unit (RAS-24UAH-ES)
SK45FMP02U2 AC 450V, 2µF
SK42CMP45U1 AC 420V, 45µF
No. Parts name Type Specifications
Output (Rated) 2200W , 2poles , 1 phase, 220 – 240V, 50Hz
1 Compressor PA290X3F-4MS Winding resistance (Ω) Red-Black White-Black
(at 20°C) 1.07 2.20
Output (Rated) 51W, 6poles, 1phase, 220 – 240V, 50Hz
2 Fan motor (for outdoor) KPG6-71SB5P-T1 Winding resistance (Ω) Red-Black White-Black
(at 20°C) 64.4 127.4
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
5 Solenoid coil
(for 4-way valve)
6 Thermo sensor TE / TD 10kΩ at 25°C / 50kΩ at 25°C
7 Magnetic relay CLK-35J 220 – 240V, 50Hz
8 Transformer FT67 220 – 240V
9 Microcomputer TMP47C840N
10 Varistor (R73, 74, 86) 15G471K 470V
11 Fuse (F01) MT3 T5A, 250V
SK45FMP3.5U2 AC 450V, 3.5µF
SK42CMP45U1 AC 420V, 45µF
VHV AC 220 – 240V
– 13 –
FILE NO. SVM-02009
4-5. Outdoor Unit (RAS-24UA-ES)
No. Parts name Type Specifications
Output (Rated) 2200W , 2poles, 1phase, 220 – 240V, 50Hz
1 Compressor PA290X3F-4MS Winding resistance (Ω) Red-Black White-Black
(at 20°C) 1.07 2.20
Output (Rated) 51W, 6poles, 1phase, 220 – 240V, 50Hz
2 Fan motor (for outdoor) KPG6-71SB5P-T1 Winding resistance (Ω) Red-Black White-Black
(at 20°C) 64.4 127.4
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
5 Magnetic relay CLK-35J 220 – 240V, 50Hz
SK45FMP3.5U2 AC 450V, 3.5µF
SK42CMP45U1 AC 420V, 45µF
– 14 –
5. REFRIGERATION CYCLE DIAGRAM
5-1. RAS-18UFHP-ES / RAS-18UAH-ES
FILE NO. SVM-02009
0.39m
(Connecting pipe)
∅12.70 mm
0.39m
(Flexible pipe)
∅12.70 mm
O.D.:12.70 mm
Cooling
Heating
Cooling
Heating
Packed valve
Heating
4-way valve
Cooling
P
(∅12.70)
Muffler
Compressor
PA225X3F-4L
Accumulator
Indoor unit
Evaporator
Multi blade fan
T
0.49m
(Connecting pipe)
∅6.35 mm
O.D.:6.35 mm
Packed valve
(∅6.35)
Capillary tube
∅1.0x1500S
Capillary tube
∅1.7x700S
Condenser
Refrigerant
R-410A 1.30 Kg
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 2.7 45.0 High 20/– 7/6
Heating High temperature*1 3.0 ~ 3.8 49.0 ~ 58.0 Low 27/– 24/18
Low temperature 2.0 34.0 High 20/– –10/–10
Standard 0.9 10.0 High 27/19 35/24
Cooling High temperature 1.0 15.0 High 32/23 43/26
Low temperature 0.6 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.
– 15 –
5-2. RAS-18UFP-ES / RAS-18UA-ES
FILE NO. SVM-02009
0.39m
(Connecting pipe)
∅12.70 mm
0.39m
(Flexible pipe)
∅12.70 mm
O.D.:12.70 mm
Accumulator
Compressor
P
Packed valve
(∅12.70)
PA225X3F-4L
Indoor unit
Evaporator
Multi blade fan
Condenser
Propeller fan
Outdoor unit
T
0.49m
(Connecting pipe)
∅6.35 mm
O.D.:6.35 mm
Packed valve
(∅6.35)
Muffler
Capillary tube
∅
1.7x350
S
Refrigerant
R-410A 1.20 Kg
Mark ( ) means check points of Gas Leak
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
50Hz
Standard
pressure P
(MPaG)
Surface temp. of heat
exchanger interchanging
pipe T (°C)
Fan speed
(indoor)
Standard 0.9 10.0 High 27/19 35/24
Cooling High temperature 1.0 13.0 High 32/23 43/26
Low temperature 0.6 2.0 Low 21/15 21/15
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
– 16 –
5-3. RAS-24UFHP-ES / RAS-24UAH-ES
FILE NO. SVM-02009
0.39m
(Connecting pipe)
∅12.70 mm
0.39m
(Flexible pipe)
∅12.70 mm
O.D.:12.70 mm
Cooling
Heating
Tank
Cooling
Heating
Packed valve
Heating
4-way valve
Cooling
P
(∅12.70)
Muffler
Compressor
PA290X3F-4MS
Condenser
Indoor unit
Evaporator
Multi blade fan
T
0.49m
(Connecting pipe)
∅6.35 mm
O.D.:6.35 mm
Packed valve
(∅6.35)
Capillary tube
∅2.0x700S
Refrigerant
R-410A 1.60 Kg
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 2.7 43.0 High 20/– 7/6
Heating High temperature*1 3.1 ~ 4.0 52.0 ~ 59.0 Low 27/– 24/18
Low temperature 2.7 36.0 High 20/––10/–10
Standard 0.9 11.0 High 27/19 35/24
Cooling High temperature 0.8 12.0 High 32/23 43/26
Low temperature 0.5 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.
– 17 –
5-4. RAS-24UFP-ES / RAS-24UA-ES
FILE NO. SVM-02009
0.39m
(Connecting pipe)
∅12.70 mm
0.39m
(Flexible pipe)
∅12.70 mm
O.D.:12.70 mm
Cooling
Tank
Compressor
P
Packed valve
(∅12.70 )
PA290X3F-4MS
Indoor unit
Evaporator
Multi blade fan
T
0.49m
(Connecting pipe)
∅6.35 mm
O.D.:6.35 mm
Packed valve
(∅6.35)
Capillary tube
∅2.0x600S
Condenser
Refrigerant
R-410A 1.60 Kg
Fan speed
(indoor)
Ambient temp.
conditions DB/WB
(°C)
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 0.9 11.0 High 27/19 35/24
Cooling High temperature 0.8 12.0 High 32/23 43/26
Low temperature 0.5 1.0 Low 21/15 21/15
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
– 18 –
6. CONTROL BLOCK DIAGRAM
6-1. RAS-18UFHP-ES, RAS-24UFHP-ES
Indoor Unit Control Panel
Heat Exchanger Sensor
Temperature Sensor
Functions
• Louver Control
• 3-minute Delay at Restart for Compressor
FILE NO. SVM-02009
8 MHzM.C.U.
Hi POWER
Display
FILTER Sign
Display
Infrared Rays Signal Receiver
Initiallizing Circuit
Infrared
Rays
36.7 kHz
Remote
Control
From Outdoor Unit
Clock Frequence
Oscillator Circuit
Power Supply
Circuit
Noise Filter
• Motor Revolution Control
• Processing
(Temperature Processing)
• Timer
• Drain Pump ON/OFF
• Serial Signal Communication
Serial Signal
Transmitter/
Receiver
Serial Signal Communication
Relay
RY401
Louver ON/OFF Signal
Louver Driver
PRE DEF.
Sign Display
TIMER
Display
OPERATION
Display
Indoor Fan
Motor
Louver Motor
Float
Switch
Drain
Pump
REMOTE CONTROL
Infrared Rays
Remote Control
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
– 19 –
6-2. RAS-18UFP-ES, RAS-24UFP-ES
Indoor Unit Control Panel
Heat Exchanger Sensor
Temperature Sensor
Functions
• Louver Control
• 3-minute Delay at Restart for Compressor
FILE NO. SVM-02009
8 MHzM.C.U.
Hi POWER
Display
FILTER Sign
Display
Infrared Rays Signal Receiver
Initiallizing Circuit
Infrared
Rays
36.7 kHz
Remote
Control
From Outdoor Unit
Clock Frequency
Oscillator Circuit
Power Supply
Circuit
Noise Filter
• Motor Revolution Control
• Processing
(Temperature Processing)
• Timer
• Drain Pump ON/OFF
• Compressor ON/OFF
Driver
Relay
RY04
Compressor
Relay
RY401
Louver ON/OFF Signal
Louver Driver
FAN-ONLY
Sign Display
TIMER
Display
OPERATION
Display
Indoor Fan
Motor
Louver Motor
Float
Switch
Drain
Pump
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
– 20 –
7. OPERATION DESCRIPTION
FILE NO. SVM-02009
7-1. Outline of Air Conditioner Control
This is a fixed capacity type air conditioner, which uses
a AC motor for an indoor fan. The AC motor drive
circuit is mounted in the indoor unit. And electrical
parts which operate the compressor and the outdoor
fan motor, are mounted in the outdoor unit.
The air conditioner is mainly controlled by the indoor
unit controller. The controller operates the indoor fan
motor based upon commands transmitted by the
remote control and transfers the operation commands
to the outdoor unit controller.
The outdoor unit controller receives operation
commands from the indoor unit, and operates the
outdoor fan motor and the compressor.
(1) Role of indoor unit controller
The indoor unit controller receives the operation
commands from the remote control and executes
them.
• Temperature measurement at air inlet of the
indoor unit by the indoor temperature sensor.
• Temperature setting of the indoor heat
exchanger by the heat exchanger sensor.
• Louver motor control.
• Indoor fan motor operation control.
• LED display control.
• Transferring of operation commands to the
outdoor unit.
• Receiving of information of the operation status
and judging of the information or indication of
error.
(2) Role of outdoor unit controller
The outdoor unit controller receives the operation
commands from the indoor controller and
executes them.
• Compressor operation
control
• Operation control of
outdoor fan motor
• Turning off the compressor and outdoor fan
when the outdoor unit receives the shutdown
command.
• Defrost control in heating operation
(Temperature measurement by the outdoor heat
exchanger and control for the four-way valve
and the outdoor fan motor.) Heating and Cooling
Model only.
Operations according
to the commands from
the indoor unit
7-1-1. Louver control
(1) Vertical air flow louver
Position of veritcal air flow louver is automatically
controlled according to the operation mode.
Besides, position of vertical air flow louver can be
arbitrarily set by pressing [FIX] button.
The louver position which is set by [FIX] button is
stored in the microcomputer, and the louver is
automatically set at the stored position for the next
operation.
(2) Swing
If [SWING] button is pressed when the indoor unit
is in operation, the vertical air flow louver starts
swinging. When [SWING] button is pressed, it
stops swinging.
7-1-2. Indoor fan control (AC Fan motor)
(1) The indoor fan is operated by the stepless speed
change AC motor.
(2) For air flow level, speed of the indoor fan motor is
controlled in five steps (LOW, LOW
+
, MED, MED
and HIGH). If AUTO mode is selected, the fan
motor speed is automatically controlled by the
difference between the preset temperature and
the room temperature.
Table 7-1-1
RAS-18UFHP-ES RAS-24UFHP-ES
MODEL
Cooling HIGH 1060 800 1170 900
and MED 900 680 1000 750
Fan only LOW 800 580 850 650
Heating MED 950 700 1020 760
MODEL
Cooling HIGH 1060 800 1170 900
and MED 900 680 1000 750
Fan only LOW 800 580 850 650
Motor speed Air flow level Motor speed Air flow level
(rpm) (m3/h) (rpm) (m3/h)
HIGH 1120 830 1210 930
LOW 850 650 860 660
RAS-18UFP-ES
LOW+=
LOW+MED
RAS-24UFP-ES
2
MED+=
MED+HIGH
2
+
– 21 –
FILE NO. SVM-02009
7-2. Description of Operation Circuit
(1) When turning on the breaker, the operation lamp
blinks. This means that the power is on (or the
power supply is cut off.)
(2) When pressing [START / STOP] button on the
remote control, receiving beep sounds from the
indoor unit, and the next operation is performed
together with opening the vertical air flow louver.
(3) Once the operation mode is set, it is memorized in
the microcontroller so that the previous operation
can be effected thereafter simply by pressing
[START / STOP] button.
7-2-1. Fan only operation
([MODE] button on the remote control is set
to the fan only operation.)
(1) When [FAN] button is set to AUTO, the indoor fan
motor operates as shown in Fig. 7-2-1. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.
7-2-2. Cooling operation
([MODE] button on the remote control is set
to the cooling operation.)
(1) The compressor, 4-way valve, outdoor fan and
operation display on the remote control are
controlled as shown in Fig. 7-2-2.
ON ON
OFF ON OFF OFF ON
Compressor
4-way valve
Common relay
(Preset temp.)
—
(Room temp.)
Preset
temp.
0.5
0
Fig. 7-2-2
display
Outdoor fan
OPERATION
+3
+2.5
(Preset temp.)
+2
—
+1.5
+1
+0.5
(Room temp.)
Preset
temp.
0
NOTE :
*1: The values marked with *1 are calculated and
controlled by the difference in motor speed
between M+ and L–.
Fig. 7-2-1 Setting of air flow [FAN:AUTO]
(2) ECO and Hi Power operation cannot be set.
M+
*1
*1
*1
L
(2) When [FAN] button is set to AUTO, the indoor fan
motor operates as shown in Fig. 7-2-3. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.
—
Preset
temp.
+3
+2.5
(Preset temp.)
+2
—
+1.5
+1
+0.5
(Room temp.)
0
-0.5
M+
*1
*1
*1
L
—
NOTE :
*1: The values marked with *1 are calculated and
controlled by the difference in motor speed
between M+ and L–.
Fig. 7-2-3 Setting of air flow [FAN:AUTO]
– 22 –
FILE NO. SVM-02009
(R
)
(P
)
7-2-3. Dry operation
([MODE] button on the remote control is set
to the dry operation.)
(1) The compressor, 4-way valve, outdoor fan and
operation display on the remote control are
controlled as shown in Fig. 7-2-4.
ON:6min.
OFF
ON:5min.
OFF
4-way valve
OFF:4min.
ON
OFF:5min.
Outdoor fan
(Preset temp.)
—
(Room temp.)
Preset
temp.
+3
+2
+1
ON:6min.
OFF:4min.
ON
ON:5min.
OFF:5min.
OFF
0
Compressor
Common relay
Fig. 7-2-4
(2) The microcontroller turns the compressor on and
off at the regular intervals (4 to 6 minutes). While
the compressor is turning off, the indoor fan motor
operates in the SUPER LOW position.
The pattern of operation depending on the relation
between room temperature and preset
temperatures is shown in Fig. 7-2-5.
Room temp.
Preset temp.+1
Preset temp.
7-2-4. Heating operation *Heating and cooling model only
([MODE] button on the remote control is set to
the heating operation.)
(1) The compressor, 4-way valve, outdoor fan and
operation display on the remote control are
controlled as shown in Fig. 7-2-6.
Preset
temp.
display
OPERATION
0
reset temp.
-0.5
—
oom temp.
ON ON
OFF
ON
Compressor
Common relay
Fig. 7-2-6
(2) When [FAN] button is set to AUTO, the indoor fan
motor operates as shown in Fig. 7-2-7. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.
Preset
temp.
0
-0.5
-1
-1.5
-2
(Preset temp.)
—
ON
OFF
ON
4-way valve
L
*1
*2
+
M
display
Outdoor fan
OPERATION
Compressor
Outdoor fan
Indoor fan
ON ON ON ON
OFF OFF OFF
L.*S.L. S.L.L. L. S.L. L.
*
Super Low
Fig. 7-2-5
(3) [FAN] button on the remote control is set to AUTO
only.
(4) The ECO and Hi POWER operations can not be
set.
-5.0
-5.5
[FAN AUTO]
(Room temp.)
*1, *2 : The values marked with *1 and *2 are
calculated and controlled by the difference in
motor speed between M+ and L.
Fig. 7-2-7 Setting of air flow [FAN:AUTO]
– 23 –
H
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