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