Toshiba RAS-24UFP-ES4, RAS-18UFP-ES4, RAS-18UAH-ES4, RAS-24UFHP-ES4, RAS-18UFHP-ES4 SERVICE MANUAL
...
FILE NO. SVM-05014
AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18UFHP-ES4 / RAS-18UAH-ES4
RAS-18UFP-ES4 / RAS-18UA-ES4
RAS-24UFHP-ES4 / RAS-24UAH-ES4
RAS-24UFP-ES4 / RAS-24UA-ES4
18 Class
(Heat pump model)
24 Class18 Class
(Cooling only model)
May, 2005
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (RAS-18UAH-ES4)
2-3 Outdoor Unit (RAS-18UA-ES4)
2-4 Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4)
3. WIRING DIAGRAM
3-1 RAS-18UFHP-ES4 / RAS-18UAH-ES4
3-2 RAS-24UFHP-ES4 / RAS-24UAH-ES4
3-3 RAS-18UFP-ES4 / RAS-18UA-ES4
3-4 RAS-24UFP-ES4 / RAS-24UA-ES4
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit (RAS-18UAH-ES4)
4-3 Outdoor Unit (RAS-18UA-ES4)
4-4 Outdoor Unit (RAS-24UAH-ES4)
4-5 Outdoor Unit (RAS-24UA-ES4)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-18UFHP-ES4 / RAS-18UAH-ES4
5-2 RAS-18UFP-ES4 / RAS-18UA-ES4
5-3 RAS-24UFHP-ES4 / RAS-24UAH-ES4
5-4 RAS-24UFP-ES4 / RAS-24UA-ES4
6. CONTROL BLOCK DIAGRAM
6-1 RAS-18UFHP-ES4, RAS-24UFHP-ES4
6-2 RAS-18UFP-ES4, RAS-24UFP-ES4
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
7-9 Self-Cleaning function
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-05014
– 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-ES4)
10-3 Outdoor Unit (RAS-18UA-ES4)
10-4 Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4)
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E-Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit (RAS-18UAH-ES4)
11-4 Outdoor Unit (RAS-18UA-ES4)
11-5 Outdoor Unit (RAS-24UAH-ES4)
11-6 Outdoor Unit (RAS-24UA-ES4)
FILE NO. SVM-05014
• This air conditioner is charged with HFC (R-410A)
that does not deplete the Ozone layer.
• This air conditioner requires special service tools
for the refrigerant R-410A.
– 2 –
1. SPECIFICATIONS
FILE NO. SVM-05014
MODEL
ITEM
Capacity 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V 220V 240V
kW 5.00 5.10 5.70 5.75 5.30 5.35 6.40 6.50 7.85 7.86 6.80 6.85
Phase 1∅
Power source V 220 − 240
Hz 50
Power consumption W 1960 2010 1830 1880 1950 2040 2650 2700 2750 2760 2640 2790
Power factor % 99 96 97 90 98 92 96 92 96 91 95 91
Running current
Starting current A 47 56
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-ES4 RAS-18UFP-ES4 RAS-24UFHP-ES4 RAS-24UFP-ES4
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-ES4 RAS-18UA-ES4 RAS-24UAH-ES4 RAS-24UA-ES4
Dimensions Height mm 538 690
Net weight kg 44 39 59 63
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m
Fan motor output W
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
Note *1 Chargeless pipe.
*2 Maximum pipe.
Indoor A 0.4 0.45
Outdoor A 8.60 8.30 8.20 8.30 8.60 8.80 12.13 11.77 12.57 12.18 12.15 12.35
Indoor (H/M/L) db 43/41/39/37/36 46/44/42/39/37
Outdoor db 52 53 53 54 51 52 56 57 57 58 56 57
Name of refrigerant R-410A
Rated amount kg 1.02 1.16 1.5
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
Output W 1500 2200
mm
mm
m
m8 10
3
/h 2105 2310 2105 2310 2120 2200 3380 3560 3380 3560 3380 3560
RAS-18UFHP-ES4 RAS-18UFP-ES4 RAS-24UFHP-ES4 RAS-24UFP-ES4
RAS-18UAH-ES4 RAS-18UA-ES4 RAS-24UAH-ES4 RAS-24UA-ES4
Cooling Heating Cooling Cooling Heating Cooling
32
12.70
6.35
1
15*
2
780
550
270
65
5KS225DAA 5JS315DAG01
42
IOL
IOL, Td Sensor
25*
2
65
65
1.6
IOL
– 3 –
Note : 1
• Capacity is based on the following temperature conditions.
FILE NO. SVM-05014
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-ES4 / RAS-18UAH-ES4 RAS-24UFHP-ES4 / RAS-24UAH-ES4
RAS-18UFP-ES4 / RAS-18UA-ES4 RAS-24UFP-ES4 / RAS-24UA-ES4
15m or less 15m or less
Over 15m up to 20m (20g/m) Over 15m up to 25m (30g/m)
JIS B615-1
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-05014
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-ES4)
10
-∅
8
11x14
∅
∅
anchor bolt
for
4x
600 or more
600
600 or
Air inlet
more
Liquid side
Electric
Parts cover
6.35)
∅
(Flare
12.7)
∅
Gas side
(Flare
FILE NO. SVM-05014
Installation dimension
120
Air inlet
325
100 or more
Air
outlet
100 or more
6 holes
-∅
8
10 anchor bolt)
— ∅
8
11x14 holes
∅
∅
(for fixing outdoor unit)
or
6-
25 Drain outlet
∅
Service Port
54
344
9
1
60
50
90
600
830
A
R10
600
50
35
Detail Drawing
A
52
325
23
6 hole
∅
11x14 hole
∅
Fan guard
Handle
420
∅
90
538
300
– 6 –
2-3. Outdoor Unit (RAS-18UA-ES4)
A
FILE NO. SVM-05014
A Detail Drawing (Back Leg)
600
52
310
36
302
270
∅
6 Hole
R15
R5.5
32.5
310
302
∅
30 Drain outlet
∅
436
530
265
FAN GUARD
115 125
2-∅11x14 Hole
(For ∅8-∅10 anchor bolt)
600 90
780 62
102
∅
∅
11x14 Hole
B
B Detail Drawing (Front Leg)
310
302
6 Hole
36
52
310
330
R15
COVER PV
Z
Electrical
part cover
Installation dimension
100 or more
325
100 or more
Z View
Air outlet
600
Air inlet
600 or more
120
75
600 or more
4x∅11 Long holes (For∅ 8-∅ 10 anchor bolt)
Liquid side
(Flare ∅6.35)
Gas side
(Flare ∅12.7)
5
4
Service port
− 7 −
2-4. Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4)
10
∅
8
12X18
∅
600
600 or
more
-∅
for
4
600 or
more
anchor bolt
Electric
Parts cover
Liquid side
6.35)
∅
(Flare
Gas side
2.7)
∅1
(Flare
FILE NO. SVM-05014
Service Port
1212
more
52
Air inlet
340
68
Installation dimension
100 or
25 Drain outlet
∅
120
Air outlet
100 or
more
140
600
310
23
Handle
340 (pitch)
88
74
880
364
A
600
Detail Drawing
A
50
63.8
340
27
12x18 hole
∅
340
690
Handle
– 8 –
3. WIRING DIAGRAM
3-1. RAS-18UFHP-ES4 / RAS-18UAH-ES4
FILE NO. SVM-05014
COLOR IDENTIFICA TION
BR W : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GR Y : GRA Y
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
CN30
CN31
BLK
CN23
P04
SG01
R22
FUSE
F01
250V AC
T6.3A
J401
2
1 1 1232 3
FOR FLOA T SWITCH
(OPTION)
When you use float
switch you should
cut J401
LOUVER
MOT OR
R09 R507
R21
CN402 CN401 CN1 1
IC04
C15
R Y401
R405
CR401
FOR DRAIN PUMP
(OPTION)
CN07
ORN
RED
PNK
YEL
BR W
BLU
L01
123
654
654
C501
321
321
MAIN PCB
MCC-865A
R Y501
5 3
5 311
BR W
GR Y
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 RA YS RECEIVE
AND INDICA TION P AR TS
123
456
DB01
BLU
DC12V
DC5V
IC03
BLU
WHI
RED
C02
PUR
456
BLU
BLU
456
456
BLU
GR Y
789
7891010
BLU
BLU
789
7891010
BLU
123
BLU
123
123
R506
BLU
POWER SUPPLY
WHI
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
THERMO
SENSOR
(TA)
HEAT
EXCHANGER
SENSOR
(TC)
1
2
3
MCC-865B
SWITCH
PCB
OUTDOOR
TERMINAL
BLOCK
C
SR
COMPRESSOR TERMINAL
INDOOR
TERMINAL
BLOCK
POWER SUPPLY
220-240 V~ 50 Hz
L
N
FERRITE CORE
2
1
2
1
BLK
BLK
RED
RED
MAGNETIC
CONTACTOR
R
GRN&YEL
S
T
A1
52C
U
V
CAPACITOR CAPACITOR
RED
S
WHI
PNK
C
R
COMPRESSOR
A2
W
BLK
RED
WHI
RE
3
3
CHASSIS
D
FAN MOTOR
INDOOR
UNIT
OUTDOOR
UNIT
GRN&YEL
BLK
TRANSFORMER
COIL FOR
4 WAY VALVE
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
BLU
YEL
BLU
BLU
1
3
1
3
1
3
5
7
9
131
11
33
MAIN P.C. BOARD (MCC-890)
1
2
CN06
3
1
CN05
3
1
3
5
CN01
7
9
CN11
3
SG01
F01
250VAC T6. 3A
CR11
TNR
R74
CN02
CR12
CR13
BLK
1
1
CN03
RY07
RY05
3
TNR
R73
RY06
CN07
CN08
DISCHARGE
PIPE
SENSOR (TD)
BLU
1
1
2
3
3
BLU
BLK
1
1
2
3
3
BLK
HEA
T
EXCHANGER
SENSOR (TE)
− 9 −
3-2. RAS-24UFHP-ES4 / RAS-24UAH-ES4
FILE NO. SVM-05014
COLOR IDENTIFICA TION
BR W : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GR Y : GRA Y
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
CN30
CN31
BLK
CN23
P04
SG01
R22
F01
FUSE
T6.3A
250V AC
J401
2
1 1 1232 3
FOR FLOA T SWITCH
(OPTION)
When you use float
switch you should
cut J401
LOUVER
MOT OR
R09 R507
R21
CN402 CN401 CN1 1
IC04
C15
R Y401
R405
CR401
FOR DRAIN PUMP
(OPTION)
CN07
L01
123
ORN
RED
PNK
YEL
BR W
BLU
654
654
C501
321
321
MAIN PCB
MCC-865A
R Y501
5 3
5 311
BR W
GR Y
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 RA YS RECEIVE
AND INDICA TION P AR TS
123
456
BLU
DC12V
DC5V
IC03
BLU
WHI
RED
456
BLU
456
456
C02
PUR
GR Y
BLU
BLU
789
7891010
BLU
BLU
789
7891010
BLU
123
BLU
123
123
DB01
R506
BLU
POWER SUPPLY
WHI
CIRCUIT
CN100
CN03
1 1
2 2
CN01
1 1
2 2
WHI
11
GR Y
22
GR Y
33
BLK
BLK
BLK
BLK
FAN
MOTOR
CN101
THERMO
SENSOR
(TA)
HEAT
EXCHANGER
SENSOR
(TC)
1
2
3
MCC-865B
SWITCH
PCB
OUTDOOR
TERMINAL
BLOCK
C
SR
COMPRESSOR TERMINAL
POWER SUPPLY
220-240 V~ 50 Hz
L
BLK
RED
BLK
(1/L1)
(2/T1)
CAPACITOR
RED
WHI
PNK
COMPRESSOR
INDOOR
TERMINAL
BLOCK
N
FERRITE CORE
RED
MAGNETIC
CONTACTOR
R
S
(3/L2)
(4/T2)
U
V
S
C
R
BLK
1
1
GRN&YEL
T
(5/L3)
(6/T3)
W
A1
52C
A2
2
3
2
3
CHASSIS
INDOOR
UNIT
OUTDOOR
UNIT
GRN&YEL
TRANSFORMER
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
1
3
1
3
1
3
5
7
9
MAIN P.C. BOARD (MCC-890)
1
2
CN06
3
1
CN05
3
1
3
5
CN01
7
9
SG01
F01
250VAC T6. 3A
TNR
R74
TNR
R73
CN07
CN08
DISCHARGE
PIPE
SENSOR (TD)
BLU
1
1
2
3
3
BLU
BLK
1
1
2
3
3
BLK
HEA
T
EXCHANGER
SENSOR (TE)
RY07
BLU
131
CN11
3
RED
WHI
RE
CAPACITOR
D
BLK
YEL
BLU
BLU
COIL FOR
4 WAY VALVE
11
33
CN02
CR11
CR12
CR13
BLK
1
1
CN03
RY05
RY06
3
FAN MOTOR
− 10 −
3-3. RAS-18UFP-ES4 / RAS-18UA-ES4
FILE NO. SVM-05014
CO LO R IDE NT IF IC ATIO N
BR W : B R OWN
R ED : R E D
WH I : WH IT E
YE L : YE LL OW
BL U : B LU E
BL K : B LA CK
GR Y : G R AY
PN K : P INK
OR N : O R ANG E
GR N &YE L : GR E E N&
GR N : GR E E N
PU R : P UR P LE
YE L LOW
BL K
WH I
R ED
GR N &YE L
BL K
CN 30
CN 31
P0 4
CN 27
11
33
S G01
R 22
F0 1
FU S E
T6 .3A
250V AC
J4 01
21 1 1232
CN 402 CN 401 CN 11
FO R F LOAT S WI TC H
(OP T ION )
Whe n you us e float
switch you s hould
cut J 401
R 09 R 50 7
R 21
CR 0 2
R Y0 4
LO UV ER
MOT OR
FO R DR AI N P UMP
IC 04
R Y40 1
R 405
CR 4 01
(OP T ION )
C1 5
OR N
R ED
PN K
YE L
BR W
BL U
654
L01
123
654
C5 01
321
321
MAI N P CB
MC C- 865A
R Y50 1
5 3
5 311
BR W
GR Y
YE L
BL K
CN 07
3
INF R AR E D R AY S R EC E IV E
AND IND IC ATIO N PA R TS
123
CN 25
123
BL U
BL U
123
CN 13
123
R 01
DB 01
C0 1
CR 5 02
DC 12V
DC 5V
CR 5 01
CN 10 BL K
WH I
R ED
IC 03
R 506
1 1
3 3
6 6
3 3
2 2
1 1
BL U
WH I
R ED
456
456
BL U
456
456
C0 2
PU R
GR Y
BL U
BL U
789
7891010
BL U
BL U
789
7891010
BL U
BL U
WH I
CN 100
CN 101
S WIT CH
WH I
11
1
PC B
GR Y
22
2
GR Y
33
3
MC C-8 65B
P OWE R S U PP LY
C IR CU IT
CN 03
1 1
2 2
CN 01
1 1
2 2
BL K
BL K
BL K
BL K
FA N
MOT OR
TH ER M O
S EN S OR
(TA)
HE AT
E XC HAN GE R
S EN S OR
(T C)
OUTDOOR
TERMINAL
BLOCK
CONTACTOR
RED
WHI
PNK
POWER SUPPLY
220 − 240 V ~ 50 Hz
L
BLK
MAGNETIC
CAPACITOR
S
R
COMPRESSOR
BLK
RED
INDOOR
TERMINAL
BLOCK
N
RED
1
1
GRN&YEL
RED
2
3
2
3
BLK
BLK
GRN&YEL
CHASSIS
INDOOR
UNIT
OUTDOOR
UNIT
SPARK KILLER
GRY
R
U
T
S
V
(or A)
A1
(or B)
A2
W
CAPACITOR
RED
C
BLK
WHI
RED
BLK
FAN MOTOR
C
R
S
COMPRESSOR TERMINAL
− 11 −
3-4. RAS-24UFP-ES4 / RAS-24UA-ES4
FILE NO. SVM-05014
COLOR IDENTIFICA TION
BR W : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GR Y : GRA Y
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
GRN : GREEN
PUR : PURPLE
YELLOW
BLK
WHI
RED
GRN&YEL
CN30
CN31
ORN
RED
CN07
PNK
YEL
BR W
BLU
L01
123
654
654
C501
321
321
MAIN PCB
MCC-865A
R Y501
5 3
5 311
BR W
GR Y
YEL
BLK
LOUVER
MOT OR
SG01
BLK
P04
F01
T6.3A
CN27
11
33
When you use float
R09 R507
R22
FUSE
250V AC
R21
CR02
R Y04
J401
21 1 1232
CN402 CN401 CN1 1
FOR FLOA T SWITCH
(OPTION)
switch you should
cut J401
IC04
C15
R Y401
R405
CR401
3
FOR DRAIN PUMP
(OPTION)
INFRARED RA YS RECEIVE
AND INDICA TION P AR TS
123
CN25
123
BLU
BLU
123
CN13
123
R01
DB01
C01
CR502
CR501
R506
CN10 BLK
WHI
1 1
RED
3 3
6 6
3 3
2 2
1 1
BLU
DC12V
DC5V
IC03
WHI
RED
456
456
BLU
456
456
C02
PUR
GR Y
789
10
789
10
BLU
BLU
BLU
BLU
BLU
WHI
789
10
10
789
CN100
CN101
SWITCH
WHI
11
1
PCB
GR Y
22
2
GR Y
33
3
MCC-865B
POWER SUPPL Y
CIRCUIT
BLU
CN03
1 1
2 2
CN01
1 1
2 2
BLK
BLK
BLK
BLK
FA N
MOT OR
THERMO
SENSOR
(TA)
HEA T
EXCHANGER
SENSOR
(TC)
OUTDOOR
TERMINAL
BLOCK
INDOOR
TERMINAL
BLOCK
POWER SUPPLY
220 − 240 V ~ 50 Hz
L
N
BLK
BLK
RED
RED
MAGNETIC CONTACTOR
RED
BLK BLK
SPARK KILLER
A2 A1
52C
1/L1 2/T1
3/L2 4/T2
5/L3 6/T3
1
1
2
2
GRN&YEL
RED
CAPACITOR
3
3
GRY
CHASSIS
RED
RED
CAPACITOR
S
WHI
PNK
R
COMPRESSOR
INDOOR
UNIT
OUTDOOR
UNIT
WHI
RED
C
FAN MOTOR
BLK
COMPRESSOR TERMINAL
BLK
C
SR
− 12 −
FILE NO. SVM-05014
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, 6poles, 4phase,
DC 12V
4-2. Outdoor Unit (RAS-18UAH-ES4)
No. Parts name Type Specifications
Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz
1 Compressor 5KS225DAA Winding resistance (Ω) Red-Black White-Black
(at 20°C) 1.632 2.457
Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz
2 Fan motor (for outdoor) WLF-240-42A-2 Winding resistance (Ω) Red-Black White-Black
(at 20°C) 188 289
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 Magnetic contactor CLK-26J 220 − 240V, 50Hz
8 Transformer TT-05 220 − 240V
9 Microcomputer TMP47C840N
10 Varistor (R73, R74) 15G471K 470V
11 Fuse (F01) TSCR T6.3A, 250V
451155L AC 450V, 1.5 µF
BUM44X4505B AC 440V, 45µF
VHV (STF) AC 220 − 240V
– 13 –
FILE NO. SVM-05014
4-3. Outdoor Unit (RAS-18UA-ES4)
No. Parts name Type Specifications
Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz
1 Compressor 5KS225DAA Winding resistance (Ω) Red-Black White-Black
(at 20°C ) 1. 632 2.457
Output (Rated) 42W, 6poles, 1 phase, 220 − 240V, 50Hz
2 Fan motor (for outdoor) WLF-240-42A-1 Winding resistance (Ω) Red-Black White-Black
(at 20°C) 188 289
Running capacitor
3
(for fan motor)
Running capacitor
4
(for compressor)
5
Magnetic contactor
4-4. Outdoor Unit (RAS-24UAH-ES4)
451155L AC 450V, 1.5µF
BUM44X4505B AC 440V, 45µF
CLK-26J
220 − 240V, 50Hz
No. Parts name Type Specifications
Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz
1 Compressor 5JS315DAG01 Winding resistance (Ω) Red-Black White-Black
(at 20°C) 0.830 2.257
Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz
2 Fan motor (for outdoor) KFG6-71SB5P-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)
Solenoid coil
5
(for 4-way valve)
6 Thermo sensor TE / TD 10kΩ at 25°C / 50kΩ at 25°C
7 Magnetic contactor A35 220 ~ 240V, 50Hz
8 Transformer TT-05 220 ~ 240V
9 Microcontroller TMP47C840N
10 Varistor (R73, R74) 15G471K 470V
11 Fuse (F01) TSCR T6.3A, 250V
451355L AC 450V, 3.5µF
BUM44X4505B AC 440V, 45µF
VHV (STF) AC 220 ~ 240V
– 14 –
FILE NO. SVM-05014
4-5. Outdoor Unit (RAS-24UA-ES4)
No. Parts name Type Specifications
Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz
1 Compressor 5JS315DAG01 Winding resistance (Ω ) Red-Black White-Black
(at 20°C) 0.830 2.257
Output (Rated) 65W, 6poles, 1 phase, 220 − 240V, 50Hz
2 Fan motor (for outdoor) KFG6-71SB5P-T 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 contactor
451355L AC 450V, 3.5µ F
BUM44X4505B
A35 220 − 240V, 50Hz
AC 440V, 45µ F
– – 15 –
5. REFRIGERATION CYCLE DIAGRAM
5-1. RAS-18UFHP-ES4 / RAS-18UAH-ES4
FILE NO. SVM-05014
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
5KS225DAA
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
∅2.0x1200S
Condenser
Refrigerant
R-410A 1.02 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.
– 16 –
5-2. RAS-18UFP-ES4 / RAS-18UA-ES4
FILE NO. SVM-05014
0.39m
(Connecting pipe)
∅12.70 mm
0.39m
(Flexible pipe)
∅12.70 mm
O.D.:12.70 mm
Compressor
P
Packed valve
(∅12.70)
5KS225DAA
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)
Capillary tube
∅
1.7x600
S
Refrigerant
R-410A 1.16 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 1.1 10.0 High 27/19 35/24
Cooling High temperature 1.2 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.)
– 17 –
5-3. RAS-24UFHP-ES4 / RAS-24UAH-ES4
FILE NO. SVM-05014
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)
Compressor
5JS315DAG01
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
∅2.0x800S
Refrigerant
R-410A 1.50 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.
– 18 –
5-4. RAS-24UFP-ES4 / RAS-24UA-ES4
FILE NO. SVM-05014
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 )
5JS315DAG01
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
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 0.6 6.0 High 27/19 35/24
Cooling High temperature 1.1 10.0 High 32/23 43/26
Low temperature 0.5 2.0 Low 21/15 21/15
Note : Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor.)
– 19 –
6. CONTROL BLOCK DIAGRAM
6-1. RAS-18UFHP-ES4, RAS-24UFHP-ES4
Indoor Unit Control Panel
Heat Exchanger Sensor
Temperature Sensor
Functions
• Louver Control
• 3-minute Delay at Restart for Compressor
FILE NO. SVM-05014
8 MHzM.C.U.
Hi POWER
Display
FILTER Sign
Display
Infrared Rays Signal Receiver
Initiallizing Circuit
Infrared
Rays
36.7 kHz
Clock Frequence
Oscillator Circuit
Power Supply
Remote
Circuit
Control
Noise Filter
From Outdoor Unit
• 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 ( )Operation ( )
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
TIMER 1.3.5.9H
COMFORT SLEEP
QUIET
– 20 –
6-2. RAS-18UFP-ES4, RAS-24UFP-ES4
Indoor Unit Control Panel
Heat Exchanger Sensor
Temperature Sensor
Functions
• Louver Control
• 3-minute Delay at Restart for Compressor
FILE NO. SVM-05014
8 MHzM.C.U.
Hi POWER
Display
FILTER Sign
Display
Infrared Rays Signal Receiver
Initiallizing Circuit
Infrared
Rays
36.7 kHz
Clock Frequency
Oscillator Circuit
Power Supply
Circuit
Remote
Control
Noise Filter
From Outdoor Unit
• 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 ( )Operation ( )
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
TIMER 1.3.5.9H
COMFORT SLEEP
QUIET
– 21 –
7. OPERATION DESCRIPTION
FILE NO. SVM-05014
7-1. Outline of Air Conditioner Contrrol
This is a fixmed capacity type air conditioner, which uses
a AC motor for an indoor fan.
circuit is mounted in the indoor unit.
par
ts 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 tr
ansfrers the operation commands
to the outdoor unit controllerm.
The outdoor unit controller receiv
commands from the indoor unit, and oper
outdoor f
(1)
an motor and the compressor
Role of indoor unit controller
The indoor unit controller receiv
commands from the remote control and e
them.
• Temperature measurement at the air inlet of the
indoor heat e
xchanger b
temperature sensor
•
T
emperature setting of the indoor heat
exchanger b
•
Louv
er motor control
•
Indoor f
•
LED display control
• T
r −ansferring of operation commands to the
y the heat exchanger sensor
an motor oper
outdoor unit
•
Receiving of inf −ormation of the operation status
and judging of the infor −mation or indication of
error
(2) Role of outdoor unit controller
The outdoor unit controller receives the oper −ation
commands from the indoor controller and
ex
ecutes them.
•
Compressor oper
control
• Operation control of
outdoor fan motor
OPERATION
MODE
RAS-18UFHP Series
RAS-18UFP Series
Model
RAS-24UFHP Series
RAS-24UFP Series
The AC motor driv
And electr
es oper
ation
e
ical
ates the
.
es the operMation
x
ecutes
y the indoor
ation control
ation
Operations according
to the commands
from the indoor unit
Cooling
Heat
an only
p
m
Air flo
w v
p
Air flo
w v
p+m
Air floanw v
p
Air flo
w v
olume (m
olume (m
olume (m
olume (m
UH
3
/h)
3
/h)
3
/h)
3
/h)
1120
−
−
1210
−
able 7-1-1
830
1090
930
• 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) *Heat pump Model
only.
7-1-1. WLouver contr+ol
(1)
V+er=tical air floLOw louv
P
osition of v2eritcal air floTw louv
controlled according to the operation modeN.
BesidesA, position of vPer
arbitr
ar
ily set b
The louv
er position which is set bFy [FIX] b
stored in the microcomputerM, and the louvLer is
automatically set at the stored position fDror the neyxt
operLation.
(2)- Swing
If [SWING] b
is in operULation, the v
s
winging.r
When [SWING] button is pressed, it
stops swinging.
7-1-2.
(1)
Indoor fan contr
The indoor fan is oper
change AC motor
(2)
For air flo
w lev
controlled in five steps (LOW
and HIGH).
motor speed is automatically controlled b
diff
erence betw
the room temper
H
M+
M
H
M+
970
1030
770 720
1030
−
770
−
1020
920
760
−
1090
810
1120
830
1210
930
1060
800
1060
800
1170
900
1170
900
er
er is automatically
tical air floUw louvH er can be
y pressing [FIX] b
utton.
utton is
utton is pressed when the indoor unit
er
tical air flo
ol (AC F
ated b
w louvHer starM+ts
an motor)
y the stepless speed
.
el, speed of the indoor f
, LOrW
an motor is
, MED
, MED
If AUTO mode is selected, the f
y the
een the preset temper
ature
.
LO
=
W+MED
ature and
2
MED
FA
L+
M
950
700
900
680
1000
750
1000
750
MED+HIGH
T
L+
L-
L+
L
L
L+
820
800
600
580
820
−
−
−
860
660
600
860
660
800
580
850
650
850
650
L-
U
L-
L
700
490
700
490
L
650
450
650
450
L
U
L
690
480
690
480
SUL/SL-
S
600
410
600
410
640
440
640
440
+
SUL/SL-
500
320
−
−
540
350
−
− 22 −
FILE NO. SVM-05014
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 [ ] 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
[ ] 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.
°C
ON ON
OFF OFF OFF ON
4-way valve
Compressor
Outdoor fan
(Room temp.) (Preset temp.)
Preset
temp.
0.5
0
Fig. 7-2-2
display lamp
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–.
(2) The Hi POWER, ECO and COMFORT SLEEP
operation cannot be set.
Fig. 7-2-1 Setting of air flow [FAN:AUTO]
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]
– 23 –
FILE NO. SVM-05014
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.
°C
ON:6min.
OFF:4min.
ON
ON:5min.
OFF:5min.
OFF
4-way valve
Outdoor fan
OPERATION
display lamp
(Room temp.) (Preset temp.)
Preset
temp.
+3
+2
+1
ON:6min.
OFF:4min.
OFF
ON:5min.
OFF:5min.
OFF
0
Compressor
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.
°C
Preset
temp.
0
0.5
(Room temp.) (Preset temp.)
ON
OFF
ON
Compressor
OFF
ON
ON
4-way valve
Outdoor fan
OPERATION
display lamp
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.)
—
L
*1
*2
+
M
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]
– 24 –
H
FILE NO. SVM-05014
(3) The indoor heat exchanger restricts revolving
speed of the fan motor to prevent a cold draft. The
upper limit of the revolving speed is sho wn in Fig.
7-2-8 and Table 7-2-1.
AUTO
34
46
33
45
21
33
20
32
*2
A + 4
A – 8
*6
A + 4
A – 8
*5
*4
SUL*3
SUL*1
Stop
Manual
(one of 5
speed)
L – H
(Up to
setting
speed)
NOTES :
*1: The fan stops for 2 minutes after thermostat-OFF.
*2: A is 24°C when the preset temperature is 24°C or
more and A is the preset temperature when it is
under 24°C.
*3: SUL means Super Ultra Low.
*4: Calculated from difference in motor speed
between SUL and HIGH.
Fig. 7-2-8 Cold draft preventing control
*5 and *6:
7-2-5. Automatic operation
([MODE] button on the remote control is set
to the automatic operation.)
(1) One of 3 operations (Cooling, Fan only or Heating)
is selected according to difference between the
preset temperature and the room temperature at
which the automatic operation has started, as
shown in Fig. 7-2-9. The Fan only operation
continues until the room temperature reaches a
level at which another mode is selected.
(2) Temporary Auto
When the TEMPORARY button on the indoor unit
is pushed, the preset temperature is fixed at 24°C
and the indoor unit is controlled as shown in
Fig. 7-2-9.
°C
Cooling operation
The louver moves to the position same
as Hi POWER operation.
+4
Cooling operation
0
Fan only operation
–1
Heating operation
(Room temp.) – (Preset temp.)
RAS-18UFHP-ES4 RAS-18UFP-ES4
RAS-24UFHP-ES4 RAS-24UFP-ES4
Fan
speed
AUTO
Manual
(L – H)
Table 7-2-1
*5
Starting period
• Up until 12 minutes
passed after starting
the unit
• From 12 to 25 minutes
passed after starting
the unit and room
temperature is 3°C
lower than preset
temperature
• Room temperature
<
Preset temperature
–4°C
Fig. 7-2-9
*6
Stabilized period
• From 12 to 25 minutes
passed after starting
the unit and room
temperature is between
preset temperature and
3°C lower than preset
temperature
• 25 minutes or more
passed after starting
the unit
• Room temperature
Preset temperature
–3.5°C
– 25 –
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