Toshiba RAS-18UFHP-E4 User manual

SERVICE MANUAL
AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18UFHP-E4/ RAS-18UAH-E4
RAS-18UFP-E4/ RAS-18UA-E4
RAS-18UFPX4/ RAS-18UAX4
RAS-18UFP-AR4/ RAS-18UA-AR4
RAS-18UFPX4-T2 / RAS-18UAX4-T2
RAS-24UFHP-E4/ RAS-24UAH-E4
RAS-24UFP-E4/ RAS-24UA-E4
RAS-24UFPX4/ RAS-24UAX4
RAS-24UFP-AR4/ RAS-24UA-AR4
FILE NO. SVM-05015
18 Class
(Heat pump model) 24 Class18 Class (Cooling only model)
May, 2005

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FILE NO. SVM-05015
CONTENTS
1. SPECIFICATIONS
1-1 18 Class
1-2 24 Class
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit (RAS-24UAH-E4, RAS-24UA-E4, RAS-24UAX4, RAS-24UA-AR4)
2-3 Outdoor Unit (RAS-18UAH-E4)
2-4 Outdoor Unit (RAS-18UA-E4, RAS-18UAX4, RAS-18UA-AR4)
3. WIRING DIAGRAM
3-1 RAS-18UFHP-E4/ RAS-18UAH-E4
3-2 RAS-18UFP-E4/ RAS-18UA-E4, RAS-18UFPX4 / RAS-18UAX4
3-3 RAS-18UFP-AR4/ RAS-18UA-AR4
3-4
3-5 RAS-24UFHP-E4/ RAS-24UAH-E4
3-6 RAS-24UFP-E4/ RAS-24UA-E4
RAS-24UFPX4/ RAS-24UAX4
RAS-24UFP-AR4/ RAS-24UA-AR4
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit (RAS-18UAH-E4)
4-3 Outdoor Unit (RAS-18UAX4, RAS-18UA-E4)
4-4 Outdoor Unit (RAS-18UA-AR4)
4-5 Outdoor Unit (RAS-18UAX4-T2)
4-6 Outdoor Unit (RAS-24UAH-E4)
4-7 Outdoor Unit (RAS-24UA-E4, RAS-24UAX4)
4-8 Outdoor Unit (RAS-24UA-AR4)
RAS-18AX4-T2)
RAS-18UFPX4-T2 / RAS-18UAX4-T2
5. REFRIGERATION CYCLE DIAGRAM
5-1 RAS-18UFHP-E4/ RAS-18UAH-E4
5-2 RAS-18UFP-E4/ RAS-18UA-E4
RAS-18UFPX4/ RAS-18UAX4
5-3 RAS-18UFP-AR4/ RAS-18UA-AR4
5-4 RAS-18UFPX4-T2 / RAS-18UAX4-T2
5-5
5-6
RAS-24UFHP-E4/ RAS-24UAH-E4
5-7
RAS-24UFP-E4/ RAS-24UA-E4
RAS-24UFPX4/ RAS -24UAX4
RAS-24UFP-AR4 / RAS-24UA-AR4

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FILE NO. SVM-05015
6. CONTROL BLOCK DIAGRAM
6-1 RAS-18UFHP-E4, RAS-24UFHP-E4
6-2 RAS-18UFP-E4, RAS-18UFPX4, RAS-18UFP-AR4, RAS-18UFPX4-T2
RAS-24UFP-E4, RAS-24UFPX4, RAS-24UFP-AR4
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-24UAH-E4, RAS-24UA-E4, RAS-24UAX4,
10-3 Outdoor Unit (RAS-18UAH-E4)
10-4Outdoor Unit (RAS-18UA-E4, RAS-18UAX4, RAS-18UA-AR4)
7-9Self-Cleaning function
7-10 QUIET Mode
7-11 COMFORT SLEEP mode
RAS-24UA-AR4, RAS-18UAX4-T2)

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FILE NO. SVM-05015
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E-Parts Assy)
11-2 Indoor Unit
11-4Outdoor Unit (RAS-18UA-E4, RAS-18UAX4)
11-6Outdoor Unit (RAS-18UAX4-T2)
11-7Outdoor Unit (RAS-24UAH-E4)
11-8
11-9Outdoor Unit (RAS-24UA-E4, RAS-24UAX4) Outdoor Unit (RAS-24UA-AR4)
11-5Indoor Unit (RAS-18UA-AR4)
11-3Outdoor Unit (RAS-18-UAH-E4)

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FILE NO. SVM-05015
1. SPECIFICATIONS
1-1
RAS-18UFHP-E4/18UAH-E4RAS-18UFP-E4/18UA-E4RAS-18UFP-AR4/18UA-AR4RAS-18UFPX4-T2/18UAX4-T2
RAS-18UFPX4/18UAX4
Cooling Heating Cooling
Capacity kW 220V 240V 220V 240V 220V 240V 220V 240V 220V
5.00 5.70 5.80 5.20 5.25 5.35 5.35 5.10
Phase 1∅
Power source V 220 – 240 220
Hz 50
Power consumption W 2000 2130 1830 2000 2000 2120 2020 2140 1610
Power factor %958793849691 9583 98
Running current Indoor A 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.45
Outdoor A9.20 9.85 8.50 9.50 9.05 9.30 9.30 10.30 7.00
Starting current A
Moisture removal lit/h 2.0
Noise Indoor (H/M/L) dB 43/41/39/37/36
Outdoor dB 52 53 53 54 51 52 52 53 56
Refrigerant Name of refrigerant R-22
Rated amount kg 1.15 1.17 1.20 1.47
Refrigerant control Capillary tube
Gas side sizemm∅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-E4
RAS-18UFP-E4RAS-18UFP-AR4RAS-18UFPX4-T2
RAS-18UFPX4
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-E4RAS-18UA-E4 RAS-18UA-AR4RAS-18UAX4-T2
RAS-18UAX4
Width mm
Dimensions Height mm
Depth mm
Net weight kg 54 41 44 51
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2105 2310 2105 2310 2120 2200 2120 2200 3380
Fan motor output W654265
Compressor Model 2JS350D5A02 PH340X3C-4KT1
Output W
Safety device IOL, Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range °C 15 ~ 43 –10 ~ 24 15 ~ 43 21 ~ 52 21 ~ 43
MODEL
ITEM
PH290X2C-4FT1
1700
1500 1700
45 42 50
42
46/43/41/38/36
1800
PH340X3C-4KTS1
Note *1 Chargeless pipe
*2 Maximum pipe
830
538
300
780
550
270
880
690
310

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FILE NO. SVM-05015
1-2
RAS-24UFP-E4/24UA-E4
RAS-24UFHP-E4/24UAH-E4RAS-24UFPX4/24UAX4RAS-24UFP-AR4/
Cooling Heating Cooling
Capacity kW 220V 240V 220V 240V 220V 240V 220V 240V
6.106.206.80 6.90 6.106.20 6.10 6.20
Phase 1∅
Power source V220 – 240
Hz 50
Power consumption W2480 2650 2490 2670 2260 2400 2260 2400
Power factor %97 90 97 89 9284 92 81
Running current Indoor A0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45
Outdoor A11.15 11.85 11.20 12.00 10.75 11.4011.20 12.40
Starting current A60 60 59
Moisture removal lit/h 2.5 2.7
Noise Indoor (H/M/L) dB 46/44/42/39/37
Outdoor dB 56 57 57 58 56 57 56 57
Refrigerant Name of refrigerant R-22
Rated amount kg
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
INDOOR UNIT RAS-24UFHP-E4RAS-24UFP-AR4
RAS-24UFPX4
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 930930 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
OUTDOOR UNIT RAS-24UAH-E4RAS-24UA-AR4
RAS-24UAX4
Width mm 880
Dimensions Height mm 690
Depth mm 310
Net weight kg 6458 59
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 3380 3560 3380 3560 3380 3560 3380 3560
Fan motor output W 65
Compressor Model 2JS386D5BB02 PH400X3CS-4KT1 PH400X3CS-4KTS1
Output W1800 1800 1900
Safety device IOL,Td Sensor IOL
Louver type Automatic louver
Usable outdoor temperature range °C 15 ~ 43 –10 ~ 24 15 ~ 43 21 ~ 43
MODEL
ITEM
1.75 1.70
RAS-24UFP-E4
RAS-24UA-E4
24UA-AR4

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FILE NO. SVM-05015
Note : 1
• Capacity is based on the following temperature conditions.
Note : 2
• Charge refrigerant according to the table below.
refrigerant
*2 Need to charge Over 15m up to 20m (20g/m) Over 15m up to 25m (30g/m)
refrigerant
Temperature Condition JIS B8615-1
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
RAS-18UFHP-E4/ RAS-18UAH-E4RAS-24UFHP-E4/ RAS-24UAH-E4
RAS-18UFP-E4/ RAS-18UA-E4RAS-24UFP-E4/ RAS-24UA-E4
RAS-18UFPX4/ RAS-18UAX4RAS-24UFPX4/ RAS-24UAX4
Refrigerant
RAS-18UFP-AR4/ RAS-18UA-AR4RAS-24UFP-AR4/ RAS-24UA-AR4
RAS-18UFPX4-T2 / RAS-18UAX4-T2
*1 No need to charge 15m or less 15m or less

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FILE NO. SVM-05015
2. CONSTRUCTIONVIEWS
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-05015
2-2.Outdoor Unit (RAS-24UAH-E4,RAS-24UA-E4,RAS-24UAX4,RAS-24UA-AR4,
RAS-18UAX4-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-05015
2-3.Outdoor Unit (RAS-18UAH-E4)
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)