Toshiba RAS-18UFHP-E User manual

SERVICE MANUAL
AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18UFHP-E / RAS-18UAH-E
RAS-18UFP-E / RAS-18UA-E
RAS-18UFPX / RAS-18UAX
RAS-18UFP-AR / RAS-18UA-AR
RAS-18UFPX-T2 / RAS-18UAX-T2
RAS-24UFHP-E / RAS-24UAH-E
RAS-24UFP-E / RAS-24UA-E
RAS-24UFPX / RAS-24UAX
RAS-24UFP-AR / RAS-24UA-AR
RAS-24UFPX-T / RAS-24UAX-T
FILE NO. SVM-02008
24 Class
Mar., 2002
18 Class

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FILE NO. SVM-02008
CONTENTS
1. SPECIFICATIONS
1-1 18 Class
1-2 24 Class
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (RAS-18UAH-E, RAS-18UA-E, RAS-18UAX, RAS-18UA-AR)
2-3 Outdoor Unit (RAS-18UAX-T2, RAS-24UAH-E, RAS-24UA-E, RAS-24UAX, RAS-24UA-AR,
RAS-24UAX-T)
3. WIRING DIAGRAM
3-1 RAS-18UFHP-E / RAS-18UAH-E
3-2 RAS-18UFP-E / RAS-18UA-E
RAS-18UFPX / RAS-18UAX
3-3 RAS-18UFP-AR / RAS-18UA-AR
3-4 RAS-24UFHP-E / RAS-24UAH-E
3-5 RAS-18UFPX-T2 / RAS-18UAX-T2
RAS-24UFP-E / RAS-24UA-E
RAS-24UFPX / RAS-24UAX
RAS-24UFP-AR / RAS-24UA-AR
RAS-24UFPX-T / RAS-24UAX-T
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit (RAS-18UAH-E)
4-3 Outdoor Unit (RAS-18UA-E, RAS-18UAX)
4-4 Outdoor Unit (RAS-18UA-AR)
4-5 Outdoor Unit (RAS-18UAX-T2)
4-6 Outdoor Unit (RAS-24UAH-E)
4-7 Outdoor Unit (RAS-24UA-E, RAS-24UAX, RAS-24UA-AR)
4-8 Outdoor Unit (RAS-24UAX-T)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-18UFHP-E / RAS-18UAH-E
5-2 RAS-18UFP-E / RAS-18UA-E
RAS-18UFPX / RAS-18UAX
5-3 RAS-18UFP-AR / RAS-18UA-AR
5-4 RAS-18UFPX-T2 / RAS-18UAX-T2
5-5 RAS-24UFHP-E / RAS-24UAH-E
5-6 RAS-24UFP-E / RAS-24UA-E
RAS-24UFPX / RAS -24UAX
RAS-24UFP-AR / RAS-24UA-AR
RAS-24UFPX-T / RAS-24UAX-T
6. CONTROL BLOCK DIAGRAM
6-1 RAS-18UFHP-E, RAS-24UFHP-E
6-2 RAS-18UFP-E, RAS-18UFPX, RAS-18UFP-AR, RAS-18UFPX-T2
RAS-24UFP-E, RAS-24UFPX, RAS-24UFP-AR, RAS-24UFPX-T

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FILE NO. SVM-02008
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
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-E, RAS-18UA-E, RAS-18UAX, RAS-18UA-AR)
10-3 Outdoor Unit (RAS-24UAH-E, RAS-18UAX-T2, RAS-24UA-E, RAS-24UAX, RAS-24UA-AR,
RAS-24UAX-T)
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E-Parts Assy)
11-2 Indoor Unit (RAS-18-UFHP-E, RAS-18UFP-E, RAS-18UFPX, RAS-18UFP-AR)
11-3 Indoor Unit (RAS-18UFPX-T2, RAS-24UFHP-E, RAS-24UFP-E, RAS-24UFPX,
RAS-24UFP-AR, RAS-24UFPX-T)
11-4 Outdoor Unit (RAS-18UAH-E)
11-5 Outdoor Unit (RAS-18UA-E, RAS-18UAX)
11-6 Outdoor Unit (RAS-18UAX-T2, RAS-24UA-E, RAS-24UAX, RAS-24UA-AR, RAS-24UAX-T)
11-7 Outdoor Unit (RAS-24UAH-E)

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FILE NO. SVM-02008
1. SPECIFICATIONS
1-1
RAS-18UFHP-E/18UAH-E RAS-18UFP-E/18UA-E RAS-18UFP-AR/18UA-AR RAS-18UFPX-T2/18UAX-T2
RAS-18UFPX/18UAX
Cooling Heating Cooling
Capacity kW 220V 240V 220V 240V 220V 240V 220V 240V 220V
5.00 5.70 5.80 5.20 5.35 5.15
Phase 1∅
Power source V 220 – 240 220
Hz 50
Power consumption W 2000 2130 1830 2000 2000 2120 2020 2140 1610
Power factor % 95 87 93 84 96 87 95 86 98
Running current Indoor A 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.45
Outdoor A 9.20 9.85 8.50 9.50 9.10 9.70 9.30 10.00 7.00
Starting current A 40 35
Moisture removal lit/h 2
Noise Indoor (H/M/L) dB 43/39/36 46/41/36
Outdoor dB 52 53 53 54 51 52 52 53 56
Refrigerant Name of refrigerant R-22
Rated amount Kg 1.29 1.06 1.17 1.47
Refrigerant control Capillary tube
Gas side size mm ∅12.70 Ø 15.88
Connection type Flare connection
Liquid side size mm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m 15*1
(One way) 20*2
Maximum height m 8
difference
INDOOR UNIT RAS-18UFHP-E RAS-18UFP-E RAS-18UFP-AR RAS-18UFPX-T2
RAS-18UFPX
Width mm 1093
Dimensions Height mm 633
Depth mm 208
Net weight Kg 23
Evaporator type Finned tube
Indoor fan type Multi blade fan
High fan m3/h 800 830 800 900
Air volume Medium fan m3/h 680 700 680 730
Low fan m3/h 580 650 580 580
Fan motor output W 50
Air filter Washable -filter
OUTDOOR UNIT RAS-18UAH-E RAS-18UA-E RAS-18UA-AR RAS-18UAX-T2
RAS-18UAX
Width mm 830 880
Dimensions Height mm 538 690
Depth mm 300 310
Net weight Kg 54 50 54 56
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2105 2310 2105 2310 1830 2010 2105 2310 3380
Fan motor output W 65 42 65
Compressor Model PH250X3-4LM PH210T2-4L7
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 ~ 52 15 ~ 43
MODEL
ITEM

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FILE NO. SVM-02008
1-2
RAS-24UFP-E/24UA-E
RAS-24UFHP-E/24UAH-E RAS-24UFPX/24UAX RAS-24UFPX-T/24UAX-T
RAS-24UFP-AR/24UA-AR
Cooling Heating Cooling
Capacity kW 220V 240V 220V 240V 220V 240V 220V
6.10 6.20 6.80 6.90 6.10 6.20 6.10
Phase 1∅
Power source V 220 – 240 220
Hz 50
Power consumption W 2480 2650 2490 2670 2260 2400 2260
Power factor % 97 90 97 89 91 84 91
Running current Indoor A 0.45 0.45 0.45 0.45 0.45 0.45 0.45
Outdoor A 11.15 11.85 11.20 12.00 10.75 11.40 10.75
Starting current A 60 55
Moisture removal lit/h 2.5 2.7
Noise Indoor (H/M/L) dB 46/42/37
Outdoor dB 56 57 57 58 56 57 56
Refrigerant Name of refrigerant R-22
Rated amount Kg 1.63
Refrigerant control Capillary tube
Gas side size mm ∅15.88
Connection type Flare connection
Liquid side size mm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m 15*1
(One way) 25*2
Maximum height m 10
difference
RAS-24UFP-E
INDOOR UNIT RAS-24UFHP-E RAS-24UFPX RAS-24UFPX-T
RAS-24UFP-AR
Width mm 1093
Dimensions Height mm 633
Depth mm 208
Net weight Kg 23
Evaporator type Finned tube
Indoor fan type Multi blade fan
High fan m3/h 900 930 900
Air volume Medium fan m3/h 750 760 750
Low fan m3/h 650 660 650
Fan motor output W 50
Air filter Washable -filter
RAS-24UA-E
OUTDOOR UNIT RAS-24UAH-E RAS-24UAX RAS-24UAX-T
RAS-24UA-AR
Width mm 880
Dimensions Height mm 690
Depth mm 310
Net weight Kg 66 65
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 3380 3560 3380 3560 3380 3560 3380
Fan motor output W 65
Compressor Model PH310X3-4MM PH280X3-4MS
Output W 2200 2000
Safety device IOL, Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range °C 15 ~ 43 –10 ~ 24 15 ~ 43 (15 ~ 52)*
MODEL
ITEM
* For RAS-24UA-AR model only

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FILE NO. SVM-02008
Note : 1
• Capacity is based on the following temperature conditions.
Note : 2
• Charge refrigerant according to the table below.
RAS-18UFHP-E / RAS-18UAH-E RAS-24UFHP-E / RAS-24UAH-E
RAS-18UFP-E / RAS-18UA-E RAS-24UFP-E / RAS-24UA-E
Refrigerant RAS-18UFPX / RAS-18UAX RAS-24UFPX / RAS-24UAX
RAS-18UFP-AR / RAS-18UA-AR RAS-24UFP-AR / RAS-24UA-AR
RAS-18UFPX-T2 / RAS-18UAX-T2 RAS-24UFPX-T / RAS-24UAX-T
*1 No need to charge 15m or less 15m or less
refrigerant
*2 Need to charge Over 15m up to 20m (20g/m) Over 15m up to 25m (20g/m)
refrigerant
Temperature
Condition JIS C9612-1994
Cooling Heating
Indoor unit inlet air temperature (DB) 27°C 20°C
(WB) 19°C 12°C
Outdoor unit inlet air temperature (DB) 35 °C 7 °C
(WB) 24 °C 6 °C

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FILE NO. SVM-02008
2. CONSTRUCTION VIEWS
2-1. Indoor Unit
Front panel
Knock out system
For stud bolt
(∅8 - ∅10)
For stud bolt (∅6)
Grille air inlet
Back Body
Installation plate
Mount plate
M10 Suspention bolt
Wireless remote control
Knock out system
200 Min 1093
1015
742
450
20 20
330165
∅74
70 Min
633
460
57 18
160
633
208
1093
UNDER CEILING & CONSOLE INSTALLATION

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FILE NO. SVM-02008
2-2. Outdoor Unit (RAS-18UAH-E, RAS-18UA-E, RAS-18UAX, RAS-18UA-AR)
ADetail Drawing
600
325
325
52
R10
∅11x14 hole
∅6 hole
A120
8-∅6 holes
(For fixing outdoor unit)
6-∅11x14 holes
(For ∅8 - ∅10 anchor bolt)
∅25 Drain oulet
Fan guard
Handle
538
300
90 600
830 160
91 54
90 50
Installation dimension
100 or more
600 or more
600
or more
100 or more
325
Air inlet
Air
inlet
4x∅11x14
for ∅8-∅10
anchor bolt
Service Port
Electric
Parts cover
Liquid side
(Flare ∅6.35)
Gas side
(Flare ∅12.70)
344
∅420

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FILE NO. SVM-02008
2-3. Outdoor Unit (RAS-18UAX-T2, RAS-24UAH-E, RAS-24UA-E, RAS-24UAX,
RAS-24UA-AR, RAS-24UAX-T)
120
64
340
340
600
27
50
690
880 74
140
88
31023
340 (pitch) 1212
364
ADetail Drawing
∅25 Drain outlet
∅12x18 hole
5268
4-∅12x18 holes
(for ∅8 - ∅10 anchor bolt)
Handle
Handle
Mounting dimension of anchor bolt
600
100 or more
600 or more
600
or more
100 or more
Air outlet 4-∅12x18
for ∅8 - ∅10
anchor bolt
Service Port
Electric
Parts cover
Liquid side
(Flare ∅6.35)
Gas side
(Flare ∅15.88)
A
600

FILE NO. SVM-02008
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3. WIRING DIAGRAM
3-1. RAS-18UFHP-E / RAS-18UAH-E
BLK
P04
SG01 R09 R507
IC04
CN07 CN13
BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI
LOUVER
MOTOR
C15
R405
C501
RY401
L01
MAIN PCB
RY501 CR502
DC12V
DC5V
CR501 IC03
R506
CN10 BLK
BLK
BLK
CN03
THERMO
SENSOR
(TA)
C01
R01 DB01
C02
SWITCH
PCB
MCC-865B
POWER SUPPLY CIRCUIT
R22
F01
T6.3A
BLK CN30
CN31
CN23
FOR FLOAT SWITCH
(OPTION)
GRN&YEL
FOR DRAIN PUMP
(OPTION)
BRW
GRY
BLK
RED RED
WHI WHI
FAN
MOTOR
PUR
BLU
GRY
YEL
When you use float
switch you should
cut J401
CN402 CN401 CN11
J401
WHI
RED
FUSE
250VAC
R21
MCC-865A
CR401
2111232 3
123
654
654
321
321
123
123
456
456
789
789
10
10
CN25
ORN
RED
PNK
YEL
BRW
BLU
INFRARED RAYS RECEIVE
AND INDICATION PARTS
123
123
456
456
789
789
10
10
5 3
5 3
1
1
1 1
1 1
2 2
CN100
WHI
GRY
GRY
CN101
11
22
33
1
2
3
3 3
6 6
3 3
2 2
1 1
1 1
2
3 3
123
L N 123
BLK
BLK
CN01
HEAT
EXCHANGER
SENSOR
(TC)
1 1
2 2
TRANSFORMER
DISCHARGE
PIPE
SENSOR (TD)
HEAT
EXCHANGER
SENSOR (TE)
MAIN P.C. BOARD (MCC-1275)
COMPRESSOR FAN MOTOR
INDOOR
TERMINAL
BLOCK
INDOOR
UNIT
OUTDOOR
TERMINAL
BLOCK
OUTDOOR
UNIT
POWER
TERMINAL
BLOCK
POWER SUPPLY
220-240V~, 50 Hz
CN06
CN08
CN07
CN05
TNR
R74
TNR
R73
F01
T5A 250VAC
RY07
RY05
CN01
CN04
CN11
CR11
CR12 TNR R96
IC07
CN03
BLK
RED
WHI
RED
BLK
PNK
WHI
RED
REDBLK
BLK
RED
GRN&YEL
GRN&YEL
CHASSIS
BLK
CN02
BLK
BLK
BLK
BLK
BLK
BLK
RED
RED
BLK
BLK
WHI
RED
GRY
BLU
YEL
BLK
BLK
COIL FOR
4 WAY VALVE
FERRITE CORE
RELAY
CAPACITOR CAPACITOR
1
3
11
33
11
2
33
1
3
5
7
9
1
3
5
7
9
1
3
1
3
1
3
1
3
3
1
1
11 13 15 A
B
12 14 16
1
3
5
11
2
33
S
R
C
COLOR IDENTIFICATION
BRW : BROWN
RED : RED
WHI : WHITE
YEL : YELLOW
BLU : BLUE
BLK : BLACK
GRY : GRAY
PNK : PINK
ORN : ORANGE
GRN&YEL : GREEN&
YELLOW
GRN : GREEN
PUR : PURPLE