Toshiba RAS-24UAH-E-1 User manual

FILE NO. SVM-03010(1)
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
Revised on Aug., 2003
RAS-24UKHP-E-1 / RAS-24UAH-E-1
RAS-18UKHP-E2 / RAS-18UAH-E2
RAS-24UKP-E-1 / RAS-24UA-E-1
RAS-24UKPX-1 / RAS-24UAX-1
RAS-24UKP-AR-1 / RAS-24UA-AR-1
RAS-24UKPX-T-1 / RAS-24UAX-T-1
RAS-18UKP-E2 / RAS-18UA-E2
RAS-18UKPX2 / RAS-18UAX2
RAS-18UKP-AR2 / RAS-18UA-AR2
RAS-18UKPX2-T2 / RAS-18UAX2-T2
18 Class
(Heat pump model) 24 Class18 Class (Cooling only model)

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FILE NO. SVM-03010(1)
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (RAS-24UAH-E-1, RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1,
RAS-24UAX-T-1, RAS-18UAX2-T2)
2-3 Outdoor Unit (RAS-18UAH-E2)
2-4 Outdoor Unit (RAS-18UA-E2, RAS-18UAX2, RAS-18UA-AR2)
3. WIRING DIAGRAM
3-1 RAS-24UKHP-E-1 / RAS-24UAH-E-1
3-2 RAS-18UKHP-E2 / RAS-18UAH-E2
3-3 RAS-24UKP-E-1 / RAS-24UA-E-1, RAS-24UKP-AR-1 / RAS-24UA-AR-1
3-4 RAS-24UKPX-1 / RAS-24UAX-1, RAS-24UKPX-T-1 / RAS-24UAX-T-1
3-5 RAS-18UKP-E2 / RAS-18UA-E2
3-6 RAS-18UKPX2 / RAS-18UAX2
3-7 RAS-18UKP-AR2 / RAS-18UA-AR2
3-8 RAS-18UKPX2-T2 / RAS-18UAX2-T2
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit (RAS-24UKHP-E-1, RAS-18UKHP-E2)
4-2 Outdoor Unit (RAS-24UAH-E-1)
4-3 Outdoor Unit (RAS-18UAH-E2)
4-4 Indoor Unit (RAS-24UKP-E-1, RAS-24UKPX-1, RAS-24UKP-AR-1, RAS-24UKPX-T-1,
RAS-18UKP-E2, RAS-18UKPX2, RAS-18UKP-AR2, RAS-18UKPX2-T2)
4-5 Outdoor Unit (RAS-24UA-E-1, RAS-24UA-AR-1)
4-6 Outdoor Unit (RAS-24UAX-1, RAS-24UAX-T-1)
4-7 Outdoor Unit (RAS-18UA-E2)
4-8 Outdoor Unit (RAS-18UAX2)
4-9 Outdoor Unit (RAS-18UA-AR2)
4-10 Outdoor Unit (RAS-18UAX2-T2)
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-24UKHP-E-1 / RAS-24UAH-E-1
5-2 RAS-18UKHP-E2 / RAS-18UAH-E2
5-3 RAS-24UKP-E-1 / RAS-24UA-E-1, RAS-24UKP-AR-1 / RAS-24UA-AR-1
5-4 RAS-24UKPX-1 / RAS-24UAX-1, RAS-24UKPX-T-1 / RAS-24UAX-T1
5-5 RAS-18UKP-E2 / RAS-18UA-E2
5-6 RAS-18UKPX2 / RAS-18UAX2
5-7 RAS-18UKP-AR2 / RAS-18UA-AR2
5-8 RAS-18UKPX2-T2 / RAS-18UAX2-T2
6. CONTROL BLOCK DIAGRAM
6-1 RAS-24UKHP-E-1, RAS-18UKHP-E2
6-2 RAS-24UKP-E-1 / RAS-24UA-E-1, RAS-24UKPX-1 / RAS-24UAX-1,
RAS-24UKP-AR-1 / RAS-24UA-AR-1, RAS-24UKPX-T-1 / RAS-24UAX-T-1,
RAS-18UKP-E2 / RAS-18UA-E2, RAS-18UKPX2 / RAS-18UAX2,
RAS-18UKP-AR2 / RAS-18UA-AR2, RAS-18UKPX2-T2 / RAS-18UAX2-T2

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FILE NO. SVM-03010(1)
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 Others
9. TROUBLESHOOTING CHART
9-1 Troubleshooting Procedure
9-2 Basic Check Items
9-3 Primary Judgement
9-4 Self-Diagnosis by Remote Control (Check Code)
9-5 How to Diagnose Faulty Part
9-6 Troubleshooting for Indoor Unit
9-7 Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire)
9-8 Troubleshooting for P.C.Board
9-9 Troubleshooting for Remote Control
10. PARTS REPLACEMENT
10-1 Indoor Unit
10-2 Outdoor Unit (RAS-24UAH-E-1, RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1,
RAS-24UAX-T-1, RAS-18UAX2-T2)
10-3 Outdoor Unit (RAS-18UAH-ES2)
10-4 Outdoor Unit (RAS-18UA-E2, RAS-18UAX2, RAS-18UA-AR2)
11. EXPLODEDVIEWS AND PARTS LIST
11-1 Indoor Unit (E - Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit (RAS-24UAH-E-1)
11-4 Outdoor Unit (RAS-18UAH-E2)
11-5 Outdoor Unit (RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1, RAS-24UAX-T-1,
RAS-18UAX2-T2)
11-6 Outdoor Unit (RAS-18UA-E2)
11-7 Outdoor Unit (RAS-18UAX2)
11-8 Outdoor Unit (RAS-18UA-AR2)

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FILE NO. SVM-03010(1)
MODEL RAS-24UKHP-E-1 RAS-24UKP-E-1 RAS-24UKPX-1 RAS-24UKP-AR-1 RAS-24UKPX-T-1
RAS-24UAH-E-1 RAS-24UA-E-1 RAS-24UAX-1 RAS-24UA-AR-1 RAS-24UAX-T-1
ITEM Cooling Heating Cooling Cooling Cooling Cooling
Capacity kW
220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V
6.30 6.30 6.80 6.90 6.40 6.45 6.40 6.45 6.40 6.45 6.40
Phase 1∅
Power source V 220 – 240 220
Hz 50
Power consumption W 2430 2510 2390 2490 2350 2440 2350 2440 2350 2440 2350
Power factor % 96 92 94 90 96 91 99 90 96 91 99
220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V
Running current A 0.3/ 0.3/ 0.2/ 0.2/ 0.3/10.9 0.3/10.8 0.3/10.43 0.3/11.0 0.3/10.9 0.3/10.8 0.3/10.43
Indoor/Outdoor 11.2 11.1 11.2 11.28
Starting current A 60 50 48 50 48
Moisture removal lit/h 2.5 2.7
Noise Indoor (H/M/L) dB 45/41/37
Outdoor (220 – 240 V) dB 56-57 57-58 56-57 56
Refrigerant Name of refrigerant R22
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 m15*1
(One way) 25*2
Maximum height m10
difference
INDOOR UNIT RAS-24UKHP-E-1 RAS-24UKP-E-1 RAS-24UKPX-1 RAS-24UKP-AR-1 RAS-24UKPX-T-1
Height mm 298
Dimensions Width mm 998
Depth mm 208
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 950
Air volume Medium fan m3/h 750 800 750
Low fan m3/h 600 650 600
Fan motor output W 30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-24UAH-E-1 RAS-24UA-E-1 RAS-24UAX-1 RAS-24UA-AR-1 RAS-24UAX-T-1
Height mm 690
Dimensions Width mm 880
Depth mm 310
Net weight kg 64 63 58 63 58
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 3380 3560 3380 3560 3380 3560 3380 3560 3380
Fan motor output W 65
Compressor Model PH310X3-4MM PH280X3-4MS 2JS386DJSM464 PH280X3-4MS 2JS386DJSM464
Output W 2200 2000 1800 2000 1800
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
1. SPECIFICATIONS

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FILE NO. SVM-03010(1)
MODEL RAS-18UKHP-E2 RAS-18UKP-E2 RAS-18UKPX2 RAS-18UKP-AR2 RAS-18UKPX2-T2
RAS-18UAH-E2 RAS-18UA-E2 RAS-18UAX2 RAS-18UA-AR2 RAS-18UAX2-T2
ITEM Cooling Heating Cooling Cooling Cooling Cooling
Capacity kW
220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V
5.05 5.05 5.80 5.90 5.20 5.25 5.20 5.25 5.20 5.25 5.15
Phase 1∅
Power source V 220 – 240 220
Hz 50
Power consumption W 1920 2040 1800 1950 1870 1950 1870 1950 1920 2040 1560
Power factor % 95 88 94 86 95 88 90 84 95 88 99
220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V
Running current A 0.2/ 0.2/ 0.2/ 0.2/ 0.2/8.75 0.2/9.0 0.2/9.25 0.2/9.50 0.2/9.0 0.2/9.5 0.2/6.94
Indoor/Outdoor 9.0 9.5 8.5 9.3
Starting current A 40 35
Moisture removal lit/h 2
Noise Indoor (H/M/L) dB 42/39/35
Outdoor (220 – 240 V) dB 52-53 53-54 51 52 51 52 52 53 56
Refrigerant Name of refrigerant R22
Rated amount kg 1.29 1.06 1.17 1.47
Refrigerant control Capillary tube
Gas side size mm ∅12.7 ∅15.88
Connection type Flare connection
Liquid side size mm ∅6.35
Interconnection Connection type Flare connection
pipe Maximum length m15*1
(One way) 20*2
Maximum height m8
difference
INDOOR UNIT RAS-18UKHP-E2 RAS-18UKP-E2 RAS-18UKPX2 RAS-18UKP-AR2 RAS-18UKPX2-T2
Height mm 298
Dimensions Width mm 998
Depth mm 208
Net weight kg 12
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m3/h 750 800 750 950
Air volume Medium fan m3/h 650 700 650 650
Low fan m3/h 530 570 530 530
Fan motor output W 30
Air filter Honeycomb woven filter with PP frame
OUTDOOR UNIT RAS-18UAH-E2 RAS-18UA-E2 RAS-18UAX2 RAS-18UA-AR2 RAS-18UAX2-T2
Height mm 538 690
Dimensions Width mm 830 880
Depth mm 300 310
Net weight kg 53 47 46 50 54
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2105 2310 1830 2010 1830 2010 2105 2310 3380
Fan motor output W 65 42 65 65
Compressor Model PH250X3-4LM 2JS350DJSM486 PH250X3-4LM PH210T2-4L7
Output W 1500 1700 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 ~ 43 15 ~ 43

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FILE NO. SVM-03010(1)
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
RAS-24UKHP-E-1 / RAS-24UAH-E-1 RAS-18UKHP-E2 / RAS-18UAH-E2
RAS-24UKP-E-1 / RAS-24UA-E-1 RAS-18UKP-E2 / RAS-18UA-E2
Refrigerant RAS-24UKPX-1 / RAS-24UAX-1 RAS-18UKPX2 / RAS-18UAX2
RAS-24UKP-AR-1 / RAS-24UA-AR-1 RAS-18UKP-AR2 / RAS-18UA-AR2
RAS-24UKPX-T-1 / RAS-24UAX-T-1 RAS-18UKPX-T2 / RAS-18UAX2-T2
*1 No need to charge 15 m or less 15 m or less
extra refrigerant
*2 Need to charge Over 15 m up to 25 m (20 g/m) Over 15 m up to 20 m (20 g/m)
extra 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-03010(1)
2. CONSTRUCTIONVIEWS
2-1. Indoor Unit
208
55 or more
Minimum distance to ceiling
998
298
50
75
56
75
50
75
7
51
100
40
48
450
20
20
48
100
∅65
998
298
10
763.5
5555 55 41
29
57 18
160
∅65
8
Back body
Knock out system
Front panel
Grille inlet
Knock out system
Connection pipe (0.39 m)
(For 24 series and RAS-18UKPX2-T2 : Flare ∅15.88)
(For 18 series except RAS-18UKPX2-T2 : Flare ∅12.7)
Connection pipe (0.49 m) Wireless remote control
(Flare ∅6.35)
(For stud bolt ∅6)
(For stud bolt ∅8 −∅10)
Drain hose (0.54 m)
Installation
Plate outline
Outline of indoor unit

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FILE NO. SVM-03010(1)
2-2.Outdoor Unit (RAS-24UAH-E-1, RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1,
RAS-24UAX-T-1, RAS-18UAX2-T2)
120
63.8
340
600
27
50
690
880 74
140
88
310
340
340 (pitch) 12
12
364
A
∅12x18 hole
ADetail Drawing
∅25 Drain outlet
52
Handle
Installation dimension
600
100 or more 100 or more
600 or more
600 or more
Air outlet
Air inlet
Electric Parts cover
Liquid side (Flare ∅6.35)
Gas side (Flare ∅15.88)
Service Port
600
340
23
68
Handle
4-∅12x18
for ∅8 −∅10
anchor bolt
4-∅12x18 holes
(for ∅8 −∅10 anchor bolt)

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FILE NO. SVM-03010(1)
2-3.Outdoor Unit (RAS-18UAH-E2)
A
ADetail Drawing
∅6 hole
R10
∅11x14 hole
∅25 Drain outlet
Fan guard
∅420
Electric Parts cover
Liquid side (Flare ∅6.35)
Gas side (Flare ∅12.7)
Installation dimension
100 or more Air inlet 600 or more
100 or more
Air inlet
Air
outlet
600 or more
600
50 35
600
344
325
91 54
60
50
90
600
830
90
120
52
23
325
Handle
538
300
Service Port
4x∅11x14
for ∅8 −∅10
anchor bolt
8-∅6 holes
(for fixing outdoor unit)
6-∅11x14 holes (for ∅8 −∅10 anchor bolt)

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FILE NO. SVM-03010(1)
2-4.Outdoor Unit (RAS-18UA-E2, RAS-18UAX2, RAS-18UA-AR2)
9090
65.5
600
780
∅420
Fan guard
538
300
Handle ∅25Drain outlet 8-∅6 hole
(for fixing outdoor unit)
A
325
120
Liquid side (Flare ∅6.35)
Gas side (Flare ∅12.7)
52.5
Service Port
Electric parts cover
344
27
130
100
Installation dimension
100 or more Air inlet 600 or more
100 or more
Air inlet
Air
outlet
600 or
more
600
325
23
301
325
∅11x14 hole
∅6 hole
R10
600
Detail Drawing
50
35
A
4x∅11x14
for ∅8 −∅10
anchor bolt
4-∅11x14 hole (for ∅8 −∅10 anchor bolt)