Table of Contents
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FILE NO. SVM-04008-(1)
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-24UKHP-E3 / RAS-24UAH-E3
RAS-18UKHP-E3 / RAS-18UAH-E3
RAS-24UKP-E3 / RAS-24UA-E3
RAS-18UKP-E3 / RAS-18UA-E3
RAS-24UKP-AR3 / RAS-24UA-AR3
RAS-18UKP-AR3 / RAS-18UA-AR3
RAS-24UKPX3 / RAS-24UAX3
RAS-18UKPX3 / RAS-18UAX3
RAS-24UKPX3-T / RAS-24UAX3-T
RAS-18UKPX3-T2 / RAS-18UAX3-T2
18 Class
18 Class
24 Class
(Heat pump model)
(Cooling only model)
June 2004
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Table of Contents
Troubleshooting
Related Manuals for Toshiba RAS-24UKHP-E3
Summary of Contents for Toshiba RAS-24UKHP-E3
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Page 1: Service Manual
FILE NO. SVM-04008-(1) SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-24UKHP-E3 / RAS-24UAH-E3 RAS-18UKHP-E3 / RAS-18UAH-E3 RAS-24UKP-E3 / RAS-24UA-E3 RAS-18UKP-E3 / RAS-18UA-E3 RAS-24UKP-AR3 / RAS-24UA-AR3 RAS-18UKP-AR3 / RAS-18UA-AR3 RAS-24UKPX3 / RAS-24UAX3 RAS-18UKPX3 / RAS-18UAX3 RAS-24UKPX3-T / RAS-24UAX3-T RAS-18UKPX3-T2 / RAS-18UAX3-T2... -
Page 2: Table Of Contents
RAS-24UKPX3 / RAS-24UAX3, RAS-24UKPX3-T / RAS-24UAX3-T RAS-18UKP-E3 / RAS-18UA-E3, RAS-18UKPX3 / RAS-18UAX3 RAS-18UKP-AR3 / RAS-18UA-AR3 RAS-18UKPX3-T2 / RAS-18UAX3-T2 SPECIFICATION OF ELECTRICAL PARTS Indoor Unit (RAS-24UKHP-E3, RAS-18UKHP-E3) Outdoor Unit (RAS-24UAH-E3) Outdoor Unit (RAS-18UAH-E3) Indoor Unit (RAS-24UKP-E3, RAS-24UKPX3, RAS-24UKP-AR3, RAS-24UKPX3-T, RAS-18UKP-E3, RAS-18UKPX3, RAS-18UKP-AR3, RAS-18UKPX3-T2) - Page 3 FILE NO. SVM-04008-(1) OPERATION DESCRIPTION Outline of Air Conditioner Control Description of Operation Circuit Hi POWER Mode High-Temperature Limit Control Low-Temperature Limit Control Defrosting Operation Auto Restart Function Filter Check Lamp Self-Cleaning function INSTALLATION PROCEDURE Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor Unit...
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Page 4: Specifications
FILE NO. SVM-04008 1. SPECIFICATIONS RAS-24UKHP-E3 RAS-24UKP-E3 RAS-24UKPX3 RAS-24UKP-AR3 RAS-24UKPX3-T MODEL RAS-24UAX3 RAS-24UAH-E3 RAS-24UA-E3 RAS-24UA-AR3 RAS-24UAX3-T ITEM Cooling Heating Cooling Cooling Cooling Cooling 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V... - Page 5 FILE NO. SVM-04008 RAS-18UKHP-E3 RAS-18UKP-E3 RAS-18UKPX3 RAS-18UKP-AR3 RAS-18UKPX3-T2 MODEL RAS-18UAH-E3 RAS-18UA-E3 RAS-18UAX3 RAS-18UA-AR3 RAS-18UAX3-T2 ITEM Cooling Heating Cooling Cooling Cooling Cooling 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V Capacity 5.05 5.05 5.80 5.90...
- Page 6 7°C Outdoor unit inlet air temperature (WB) 24°C 6°C Note : 2 • Charge refrigerant according to the table below. RAS-24UKHP-E3 / RAS-24UAH-E3 RAS-18UKHP-E3 / RAS-18UAH-E3 RAS-24UKP-E3 / RAS-24UA-E3 RAS-18UKP-E3 / RAS-18UA-E3 Refrigerant RAS-24UKPX3 / RAS-24UAX3 RAS-18UKPX3 / RAS-18UAX3 RAS-24UKP-AR3 / RAS-24UA-AR3...
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Page 7: Construction Views
FILE NO. SVM-04008 2. CONSTRUCTION VIEWS 2-1. Indoor Unit Back body Front panel Grille inlet Knock out system Knock out system Drain hose (0.54 m) Connection pipe (0.39 m) Connection pipe (0.49 m) (For 24 series and RAS-18UKPX3-T2 : Flare ∅15.88) Wireless remote control (Flare ∅6.35) (For 18 series except RAS-18UKPX3-T2 : Flare ∅12.7) -
Page 8: Outdoor Unit (Ras-24Uah-E3, Ras-24Ua-E3, Ras-24Uax3, Ras-24Ua-Ar3, Ras-24Uax3-T, Ras-18Uax3-T2)
FILE NO. SVM-04008 2-2. Outdoor Unit (RAS-24UAH-E3, RAS-24UA-E3, RAS-24UAX3, RAS-24UA-AR3, RAS-24UAX3-T, RAS-18UAX3-T2) – 7 –... - Page 9 FILE NO. SVM-04008 2-3. Outdoor Unit (RAS-18UAH-E3) – 8 –...
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Page 10: Outdoor Unit (Ras-18Ua-E3, Ras-18Uax3, Ras-18Ua-Ar3)
FILE NO. SVM-04008 2-4. Outdoor Unit (RAS-18UA-E3, RAS-18UAX3, RAS-18UA-AR3) – 9 –... -
Page 11: Wiring Diagram
FILE NO. SVM-04008 3. WIRING DIAGRAM 3-1. RAS-24UKHP-E3 / RAS-24UAH-E3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN &YELLOW GREEN CN 07 CN 10 IC04 VARISTOR SG01 T6. 3A 250 V... -
Page 12: Ras-18Ukhp-E3 / Ras-18Uah-E3
FILE NO. SVM-04008 3-2. RAS-18UKHP-E3 / RAS-18UAH-E3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN &YELLOW GREEN CN 07 CN 10 IC04 VARISTOR SG01 T6. 3A 250 V DB01 F01 FUSE DC15V DC0V DC12V... -
Page 13: Ras-24Ukp-E3 / Ras-24Ua-E3, Ras-24Ukp-Ar3 / Ras-24Ua-Ar3
FILE NO. SVM-04008 3-3. RAS-24UKP-E3 / RAS-24UA-E3, RAS-24UKP-AR3 / RAS-24UA-AR3 RAS-24UKPX3 / RAS-24UAX3, RAS-24UKPX3-T / RAS-24UAX3-T COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN & YELLOW : GREEN CN 07 CN 10 IC04 VARISTOR... -
Page 14: Ras-18Ukp-E3 / Ras-18Ua-E3, Ras-18Ukpx3 / Ras-18Uax3
FILE NO. SVM-04008 3-4. RAS-18UKP-E3 / RAS-18UA-E3, RAS-18UKPX3 / RAS-18UAX3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN & YELLOW GREEN CN 07 CN 10 IC04 SG01 VARISTOR DB01 T6.3A 250 V F01 FUSE DC15V DC0V... -
Page 15: Ras-18Ukp-Ar3 / Ras-18Ua-Ar3
FILE NO. SVM-04008 3-5. RAS-18UKP-AR3 / RAS-18UA-AR3 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN & YELLOW GREEN CN 07 CN 10 IC04 VARISTOR SG01 T6.3A 250 V DB01 F01 FUSE DC15V DC0V DC12V... -
Page 16: Ras-18Ukpx3-T2 / Ras-18Uax3-T2
FILE NO. SVM-04008 3-6. RAS-18UKPX3-T2 / RAS-18UAX3-T2 COLOR IDENTIFICATION BROWN FAN MOTOR LOUVER WHITE MOTOR YELLOW BLUE DC MOTOR BLACK GRAY PINK ORANGE GRN&YEL GREEN & YELLOW : GREEN CN 07 CN 10 IC04 SG01 VARISTOR T6.3A 250 V DB01 F01 FUSE DC15V DC0V... -
Page 17: Specification Of Electrical Parts
FILE NO. SVM-04008 4. SPECIFICATION OF ELECTRICAL PARTS 4-1. Indoor Unit (RAS-24UKHP-E3, RAS-18UKHP-E3) Parts name Type Specifications Fan motor (for indoor) ICF-340-30-2 DC 340 V, 30 W Thermo sensor (TA-sensor) ——— 10 kΩ at 25°C DC-DC transformer (T01) SWT-58A DC 390 V, Secondary DC 15 V, 12 V, 7 V... -
Page 18: Outdoor Unit (Ras-18Uah-E3)
FILE NO. SVM-04008 4-3. Outdoor Unit (RAS-18UAH-E3) Parts name Type Specifications Output (Rated) 1500 W, 2 poles, 1 phase, 220 – 240 V, 50 Hz Compressor PH250X3-4LM Winding resistance (Ω) (at 20°C) 2.29 1.22 Output (Rated) 65 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) KFG6-71SB5P-T3 Winding resistance (Ω) Red-Black... -
Page 19: Outdoor Unit (Ras-24Ua-E3, Ras-24Uax3, Ras-24Uax3-T)
FILE NO. SVM-04008 4-5. Outdoor Unit (RAS-24UA-E3, RAS-24UAX3, RAS-24UAX3-T) Parts name Type Specifications Output (Rated) 2200 W, 2 poles, 1 phase, 220 − 240 V, 50 Hz Compressor 2JS386D5BB02 Winding resistance (Ω ) (at 20 °C) 1.979 0.886 Output (Rated) 65 W, 6 poles, 1 phase, 220 − 240 V, 50 Hz Winding resistance (Ω... -
Page 20: Outdoor Unit (Ras-18Ua-Ar3)
FILE NO. SVM-04008 4-8. Outdoor Unit (RAS-18UA-AR3) Parts name Type Specifications Output (Rated) 1500 W, 2 poles, 1 phase, 220 – 240 V, 50 Hz Compressor 2JS350D5DA02 Winding resistance (Ω) (at 20°C) 0.981 2.845 Output (Rated) 65 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) KFG6-71SB5P-T4 Winding resistance (Ω) -
Page 21: Refrigeration Cycle Diagram
FILE NO. SVM-04008 5. REFRIGERATION CYCLE DIAGRAM 5-1. RAS-24UKHP-E3 / RAS-24UAH-E3 Indoor unit Evaporator Cooling 0.39 m 0.49 m Heating (Connecting pipe) (Connecting pipe) ∅15.88 ∅6.35 Cross flow fan O.D.:15.88 mm O.D.:6.35 mm Packed valve Packed valve (∅15.88) (∅6.35) Gas container connection (Reinstall etc.) -
Page 22: Ras-18Ukhp-E3 / Ras-18Uah-E3
FILE NO. SVM-04008 5-2. RAS-18UKHP-E3 / RAS-18UAH-E3 Indoor unit Evaporator Cooling 0.49 m 0.39 m Heating (Connecting pipe) (Connecting pipe) ∅12.7 ∅6.35 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm Packed valve Packed valve (∅12.7) (∅6.35) Gas container connection (Reinstall etc.) Heating Cooling 4-way valve... -
Page 23: Ras-24Ukp-E3 / Ras-24Ua-E3
FILE NO. SVM-04008 5-3. RAS-24UKP-E3 / RAS-24UA-E3 Indoor unit Evaporator Cooling 0.39 m 0.49 m (Connecting pipe) (Connecting pipe) ∅15.88 ∅6.35 Cross flow fan O.D.:15.88 mm O.D.:6.35 mm Packed valve Packed valve (∅15.88) (∅6.35) Gas container connection (Reinstall etc.) Cooling Cooling Compressor 2JS386D5BB02 Capillary tube... -
Page 24: Ras-24Ukpx3 / Ras-24Uax3 Ras-24Ukpx3-T / Ras-24Uax3-T
FILE NO. SVM-04008 5-4. RAS-24UKPX3 / RAS-24UAX3 RAS-24UKPX3-T / RAS-24UAX3-T Indoor unit Evaporator Cooling 0.39 m 0.49 m (Connecting pipe) (Connecting pipe) ∅15.88 ∅6.35 Cross flow fan O.D.:15.88 mm O.D.:6.35 mm Packed valve Packed valve (∅15.88) (∅6.35) Gas container connection (Reinstall etc.) Cooling Cooling Compressor 2JS386D5BB02... -
Page 25: Ras-18Ukp-E3 / Ras-18Ua-E3
FILE NO. SVM-04008 5-5. RAS-18UKP-E3 / RAS-18UA-E3 Indoor unit Evaporator 0.39 m 0.49 m (Connecting pipe) (Connecting pipe) ∅12.7 ∅6.35 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm Packed valve Packed valve (∅12.7) (∅6.35) Capillary tube ∅2.0x700 s 2JS350D5DA02 Compressor Dryer Condenser Refrigerant R22 1.05 kg... -
Page 26: Ras-18Ukpx3 / Ras-18Uax3
FILE NO. SVM-04008 5-6. RAS-18UKPX3 / RAS-18UAX3 Indoor unit Evaporator 0.49 m 0.39 m (Connecting pipe) (Connecting pipe) ∅6.35 ∅12.7 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm Packed valve Packed valve (∅12.7) (∅6.35) Capillary tube ∅2.0x700 s Compressor 2JS350D5DA02 Dryer Condenser Refrigerant R22 1.05 kg... -
Page 27: Ras-18Ukp-Ar3 / Ras-18Ua-Ar3
FILE NO. SVM-04008 5-7. RAS-18UKP-AR3 / RAS-18UA-AR3 Indoor unit Evaporator 0.49 m 0.39 m (Connecting pipe) (Connecting pipe) ∅6.35 ∅12.7 Cross flow fan O.D.:12.7 mm O.D.:6.35 mm Packed valve Packed valve (∅12.7) (∅6.35) Accumulator Capillary tube ∅2.0x1000 s Capillary tube Compressor 2JS350D5DA02 ∅0.8x900 s Dryer... -
Page 28: Ras-18Ukpx3-T2 / Ras-18Uax3-T2
FILE NO. SVM-04008 5-8. RAS-18UKPX3-T2 / RAS-18UAX3-T2 Indoor unit Evaporator 0.49 m 0.39 m (Connecting pipe) (Connecting pipe) ∅15.88 ∅6.35 Cross flow fan O.D.:15.88 mm O.D.:6.35 mm Packed valve Packed valve (∅15.88) (∅6.35) Capillary tube Accumulator ∅2.0x800 s PH210T2-4L7 Compressor Condenser Refrigerant R22 1.47 kg... -
Page 29: Control Block Diagram
FILE NO. SVM-04008 6. CONTROL BLOCK DIAGRAM 6-1. RAS-24UKHP-E3, RAS18UKHP-E3 Indoor Unit Control Panel M.C.U. Functions Operation Heat Exchanger Sensor • Louver Control Display Timer • 3-minute Delay at Restart for Compressor Temperature Sensor Display Filter Sign • Motor Revolution Control... -
Page 30: Ras-18Ukp-E3 / Ras-18Ua-E3, Ras-18Ukpx3 / Ras-18Uax3 Ras-18Ukp-Ar3 / Ras-18Ua-Ar3, Ras-18Ukpx3-T2 / Ras-18Uax3-T2
FILE NO. SVM-04008 6-2. RAS-18UKP-E3 / RAS-18UA-E3, RAS-18UKPX3 / RAS-18UAX3 RAS-18UKP-AR3 / RAS-18UA-AR3, RAS-18UKPX3-T2 / RAS-18UAX3-T2 RAS-24UKP-E3 / RAS-24UA-E3, RAS-24UKPX3 / RAS-24UAX3 RAS-24UKP-AR3 / RAS-24UA-AR3, RAS-24UKPX3-T / RAS-24UAX3-T Indoor Unit Control Panel M.C.U. Operation Functions Heat Exchanger Sensor Display • Louver Control Timer •... -
Page 31: Operation Description
• Transferring of operation commands to the Table 7-1-1 outdoor unit • Receiving of information of the operation status RAS-24UKHP-E3 RAS-18UKHP-E3 and judging of the information or indication of MODEL error Motor speed Air flow level Motor speed Air flow level... -
Page 32: Description Of Operation Circuit
FILE NO. SVM-04008 7-2-2. Cooling operation 7-2. Description of Operation Circuit ([MODE] button on the remote control is set (1) When turning on the breaker, the operation lamp to the cooling operation.) blinks. This means that the power is on (or the (1) The compressor, 4-way valve, outdoor fan and power supply is cut off.) operation display lamp are controlled as shown in... - Page 33 FILE NO. SVM-04008 7-2-4. Heating operation *Heat pump model only 7-2-3. Dry operation ([MODE] button on the remote control is set ([MODE] button on the remote control is set to the dry operation.) to the heating operation.) (1) The compressor, 4-way valve, outdoor fan and (1) The compressor, 4-way valve, outdoor fan and operation display lamp are controlled as shown in operation display lamp are controlled as shown in...
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Page 34: Cooling Operation
Fan only operation *4: Calculated from difference in motor speed between SUL and HIGH. Fig. 7-2-8 Cold draft preventing control Heating operation *5 and *6: RAS-24UKP-E3, RAS-24UKPX3 RAS-24UKHP-E3 RAS-24UKP-AR3, RAS-24UKPX3-T RAS-18UKHP-E3 RAS-18UKP-E3, RAS-18UKPX3 Table 7-2-1 RAS-18UKP-AR3, RAS-18UAPX3-T2 Fig. 7-2-9 speed... -
Page 35: Hi Power Mode
FILE NO. SVM-04008 7-3. Hi POWER Mode 7-4. High-Temperature Limit Control *Heat pump model only ([Hi POWER] button on the remote control is pressed.) The microcontroller detects the indoor heat exchanger temperature to prevent pressure of a refrigerating cycle When [Hi POWER] button is pressed while the indoor from increasing excessively. -
Page 36: Auto Restart Function
FILE NO. SVM-04008 7-7-1. How to set auto restart function 7-7. Auto Restart Function To set the auto restart function, proceed as follows: The indoor unit is equipped with an automatic The power supply to the unit must be on; the function restarting function which allows the unit to restart will not set if the power is off. -
Page 37: Filter Check Lamp
FILE NO. SVM-04008 7-7-2. How to cancel auto restart function To cancel auto restart function, proceed as follows: Repeat the setting prodedure: the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote control after the main power supply is turned off. -
Page 38: Self-Cleaning Function
FILE NO. SVM-04008-(1) 7-9. Self-Cleaning function. Self-Cleaning function is designed to reduce humidity that causes mold to form inside the air conditioning unit. This advanced, efficient system reduces moisture in the coil. When you turn off your air conditioner, the internal fan activates and dries the moisture in the coil for 20 minutes, then turns off automatically. -
Page 39: Installation Procedure
Also, make sure the equipment is properly earthed. • Appliance shall be installed in accordance with national wiring regulations. If you detect any damage, do not install the unit. Contact your TOSHIBA dealer immediately. CAUTION • Exposure of unit to water or other moisture before installation could result in electric shock. - Page 40 FILE NO. SVM-04008 REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER Please make absolutely sure that the installation of this appliance is reported to the local power supplier before installation. If you experience any problems, or if the installation is not accepted by the supplier, the service agency will take adequate countermeasures.
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Page 41: Installation Diagram Of Indoor And Outdoor Units
FILE NO. SVM-04008 8-2. Installation Diagram of Indoor and Outdoor Units Hook Installation For the rear left and left plate piping Wall Insert the cushion between the indoor unit and wall, and lift the indoor unit for better operation. Shield pipe Do not allow the drain Bioenzyme filter... -
Page 42: Installation
FILE NO. SVM-04008 8-3. Installation 8-3-1. Optional installation parts Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅6.35 mm : ∅12.70 mm (18 series except RAS-18UKPX3-T2 / RAS-18UAX3-T2) Gas side each : ∅15.88 mm (24 series and RAS-18UKPX3-T2 / RAS-18UAX3-T2) Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes... - Page 43 FILE NO. SVM-04008 8-3-2. Accessory and installation parts Part Part Part Part name (Q'ty) Part name (Q'ty) Part name (Q'ty) Installation plate x 1 Remote control holder x 1 Bioenzyme filter x 2 Mounting screw ∅4 x 25 s x 8 Wireless remote control x 1 Filter frame x 2 Pan head wood screw...
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Page 44: Indoor Unit
FILE NO. SVM-04008 8-4-2. Cutting a hole and mounting installation 8-4. Indoor Unit plate 8-4-1. Installation place <Cutting a hole> • A place which provides the spaces around the When installing the refrigerant pipes from the rear. indoor unit as shown in the above diagram. •... - Page 45 FILE NO. SVM-04008 <When the installation plate is directly mounted on 8-4-3. Electrical work the wall> 1. The supply voltage must be the same as the rated 1. Securely fit the installation plate onto the wall by voltage of the air conditioner. screwing it in the upper and lower parts to hook up 2.
- Page 46 FILE NO. SVM-04008 8-4-4. Wiring connection CAUTION Air Inlet grille • Be sure to refer to the wiring system diagram labeled inside the front panel. • Check local electrical cords and also any specific Front panel wiring instructions or limitations. Connecting cable Fig.
- Page 47 FILE NO. SVM-04008 8-4-5. Piping and Drain Hose Installation To connect the pipe after installation of the unit (figure) <In case of rightward piping> (To the forefront of flare) • After scribing slits of the body-right by a knife or a 400 mm Liquid side making-off pin, cut them by a pair of nippers or the...
- Page 48 FILE NO. SVM-04008 8-4-6. Indoor unit fixing 8-4-7. Drainage 1. Pass the pipe through the hole in the wall, and hook 1. Run the drain hose sloped downwards. the indoor unit on the installation plate at the upper hooks. NOTE •...
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Page 49: Outdoor Unit
FILE NO. SVM-04008 8-5-2. Refrigerant piping connection 8-5. Outdoor Unit 1. Cut the pipe with a pipe cutter. 8-5-1. Installation place • A place which provides the spaces around the outdoor unit as shown in the left diagram. Roughness Warp Obliquity 90°... - Page 50 FILE NO. SVM-04008 (Unit : N·m) 8-5-3. Evacuating Outer dia. After the piping has been connected to the indoor unit, Tightening torque of copper pipe you can perform the air purge together at once. ∅6.35 mm 16 to 18 (1.6 to 1.8 kgf·m) AIR PURGE ∅12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
- Page 51 FILE NO. SVM-04008 <Stripping length of connecting cable> TO CHARGE REFRIGERANT RAS-24UKHP-E3 / RAS-24 UAH-E3 RAS-18UKHP-E3 / RAS-18UAH-E3 Terminal block RAS-24UKP-E3 / RAS-24 UA-E3 RAS-18UKP-E3 / RAS-18UA-E3 Refri gerant RAS-24UKPX3 / RAS-24 UAX3 RAS-18UKPX3 / RAS-18UAX3 RAS-24UKP-AR3 / RAS-24 UA-AR3...
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Page 52: How To Set Remote Control Selector Switch
FILE NO. SVM-04008 2. Set the remote control selector switch with the 8-6. How to Set Remote Control Selector remote control Switch When two indoor units as installed in seperated rooms, [B] is indicated on the liquid crystal display when there is no need to change the selector switch. -
Page 53: Others
FILE NO. SVM-04008 8-7-3. Auto restart setting 8-7. Others This product is designed so that, after a power failure, 8-7-1. Gas leak test it can restart automatically in the same operating mode Electric parts cover as before the power failure. Information Flare nut connections The product was shipped with Auto Restart function... -
Page 54: Troubleshooting Chart
FILE NO. SVM-04008 9. TROUBLESHOOTING CHART 9-1. Troubleshooting Procedure : 9-2-2. Incorrect cable connection between Indoor and outdoor units Follow the details of 9-2. Basic Check Items. The indoor unit is connected to the outdoor unit with If there is no trouble corresponding to 9-2, check 4 cables. -
Page 55: Primary Judgement
FILE NO. SVM-04008 9-3. Primary Judgement 9-3-2. Failure diagnosis The indoor unit diagnoses the operation condition and 9-3-1. Role of indoor unit controller indicates the information of the self-diagnosis with the The indoor unit controller receives the operation lamps on the display panel of the indoor unit. commands from the remote control and executes them. -
Page 56: Self-Diagnosis By Remote Control (Check Code)
FILE NO. SVM-04008 9-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to G in Table 9-3-1, exchanger the self-diagnosis by the remote control. (2) When the remote control is set to the service mode, the indoor controller diagnoses the operation condition and indicate the information of the self-diagnosis on the display of the remote... - Page 57 FILE NO. SVM-04008 Table 9-4-1 Block level Diagnosis function Judgement and action Check Check Unit Block Symptom Condition code code status Indoor The indoor thermo sensor (TA) is Operation The lamp on the 1. Check the indoor thermo sensor (TA). P.C.
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Page 58: How To Diagnose Faulty Part
FILE NO. SVM-04008 9-5. How To Diagnose Faulty Parts Operation Check item Conceivable principle cause [04 Serial signal error] (Heat pump model) Measure Item by symptoms Does outdoor unit operate? Connect crossover Are 1, 2 and 3 crossover wires properly. wires connected properly? Is connector Connect connector... - Page 59 FILE NO. SVM-04008 [09 Other cycle error] (1) (Heat pump model) Does compressor operate? Does inner Check charged amount of refrigerant. Is compressor overload relay Check defective overload. turned off shortly? (in compressor) Check compressor. operate? Failure Replace Is TC sensor resistance value compressor.
- Page 60 FILE NO. SVM-04008 [0C Indoor TA sensor error] Is CN04 (TA sensor connector) Connect CN04 properly. connected properly? Is TA sensor resistance value Replace TA sensor. (10 kΩ at 25°C) normal? Indoor P.C. board is defective. Replace P.C. board. [0d Indoor TC sensor error] Is CN05 (TC sensor connector) Connect CN05 properly.
- Page 61 FILE NO. SVM-04008 [19 outdoor TD sensor error] (Heat pump model) Connect connector Is TD sensor connected properly? properly. Is TD sensor resistance value Replace TD sensor. (50 kΩ at 25°C) normal? Outdoor P.C. board is defective. Replace P.C. board. [1E Discharge temp.
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Page 62: Troubleshooting For Indoor Unit
FILE NO. SVM-04008 9-6. Troubleshooting for Indoor unit 9-6-1. Power can not be turned on. (The unit does not operate at all.) <Primary check> (1) Is the supply voltage normal? (2) Is the connection to the AC output OK? (3) Are the connection of the primary side and the secondary side of the power transformer inserted into the P.C. - Page 63 FILE NO. SVM-04008 9-6-2. Only indoor fan motor does not operate. <Primary check> (1) Is it possible to detect the power supply voltage (200 – 240 V) between 1 and 2 on the terminal block? (2) Does the indoor fan motor operate in cooling operation? (In heating operation, the indoor fan motor does not operate for approximately 5 minutes after it is turned on, to prevent a cold air from blowing in.) –...
- Page 64 FILE NO. SVM-04008 9-6-3. Indoor fan motor automatically starts to rotate by turning on power supply. <Cause> The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to the inside of the motor. If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning on power supply.
- Page 65 FILE NO. SVM-04008 9-6-4. Compressor does not operate. <Primary check> (1) Is the preset temperature higher than the room temperature in cooling operation? (2) Is the crossover cable connected properly? <Inspection procedure> -Cooling only model- – 63 –...
- Page 66 FILE NO. SVM-04008 <Inspection procedure> - Colling model - Turn on power supply. Refer to item Power Does OPERATION can not be turned on . lamp blink? Refer to 9-9 Troubleshooting Is it possible to start for Remote Control . unit by remote control? Replace P.C.
- Page 67 FILE NO. SVM-04008 <Inspection procedure) - Heating model - AC 70-100V Replace transformer outdoor P.C. board. − 65 −...
- Page 68 FILE NO. SVM-04008 Rewire or replace Are all of compressor cords normal? defective cords. Is compressor motor winding normal? Replace compressor. Compressor is defective. (Check winding resistor.) Is capacitor for compressor normal? Replace capacitor. Capacitor is defective. Replace overload relay. Is overload relay normal? Overload relay is defective.
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Page 69: Troubleshooting For Wiring (Interconnect Cable And Serial Signal Wire)
FILE NO. SVM-04008 9-7. Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) 9-7-1. Outdoor unit does not operate. <Inspection procedure> (1) Is the voltage between of the indoor terminal block varied? (2) Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram? NOTE: Measure the voltage for 2 minutes and 30 seconds after starting the unit. -
Page 70: Troubleshooting For P.c. Board
FILE NO. SVM-04008 9-8. Troubleshooting for P.C. board <Inspection procedure> (1) If the P.C. board is detective, check for disconnec- 9-8-1. How to check indoor P.C. board tion, burn or discoloration of the copper foil pattern of the P.C. board. <Cautions for handling P.C. - Page 71 FILE NO. SVM-04008 Procedure Check points Causes 1. The temperature of the indoor Press [START/STOP] button once 1. Check whether or not the heat exchanger is extremely low. to start the unit. compressor operates. • Shorten the time of the restart 2.
- Page 72 FILE NO. SVM-04008 9-8-3. P.C. Board layout Top View Bottom View – 70 –...
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Page 73: Troubleshooting For Remote Control
FILE NO. SVM-04008 9-9. Troubleshooting for Remote Control The unit does not beep at all. Press START/STOP OPERATION lamp on button. indoor unit is not indicated. Is transmission mark indicated? Press RESET button on remote control Is receiver on with tip of pencil. indoor unit exposed to direct sunlight? Does indoor unit... -
Page 74: Part Replacement
FILE NO. SVM-04008 10. PART REPLACEMENT 10-1. Indoor Unit Part name Procedures Remarks Front panel How to remove the front panel 1) Stop the operation of the air conditioner and turn off its main power supply. 2) Pull the inlet grille toward you to open it and remove 4 screws fixing the front panel. - Page 75 FILE NO. SVM-04008 Part name Procedures Remarks Horizontal grille 1) Remove center 2 shafts of the horizontal grille from (1) Center shafts the back body. 2) Remove left shaft of the horizontal grille from the back body. (2) Left shafts 3) Remove the horizontal grille from the back body.
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Page 76: Outdoor Unit (Ras-24Uah-E3, Ras-24Ua-E3, Ras-24Uax3, Ras-24Ua-Ar3, Ras-24Uax3-T, Ras-18Uax3-T2)
FILE NO. SVM-04008 10-2. Outdoor Unit (RAS-24UAH-E3, RAS-24UA-E3, RAS-24UAX3, RAS-24UA-AR3, RAS-24UAX3-T, RAS-18UAX3-T2) Part name Procedures Remarks Common 1) Stop the operation of the air conditioner and turn off Top cabinet procedure its main power supply or remove the power supply Electrical cord. -
Page 77: Outdoor Unit (Ras-18Uah-E3)
FILE NO. SVM-04008 10-3 Outdoor Unit (RAS-18UAH-E3) Part name Procedures Remarks Common 1) Stop the operation of the air conditioner and turn off procedure its main power supply or remove the power supply cord. 2) Remove the electrical parts cover. (4 screws ∅... -
Page 78: Outdoor Unit (Ras-18Ua-E3, Ras-18Uax3, Ras-18Ua-Ar3)
FILE NO. SVM-04008 10-4 Outdoor Unit (RAS-18UA-E3, RAS-18UAX3, RAS-18UA-AR3) Part name Procedures Remarks Common 1) Stop the operation of the air conditioner and turn off procedure its main power supply or remove the power supply cord. 2) Remove the electrical parts cover. (2 screws ∅4 x 10L) 3) Remove 2 cord clamps (4 screws ∅4 x 22L) and Remove... -
Page 79: Exploded Views And Parts List
RAS-24UKPX3, RAS-24UKP-AR3, RAS-24UKPX3-T) 43T69005 Sensor, Thermostat 43T69377 P.C. Board Assy (RAS-18UKHP-E3) 43T69066 P.C. Board Assy, WRS-LED 43T69378 P.C. Board Assy (RAS-18UKP-E3, MCC-819 RAS-18UKPX3, RAS-18UKP-AR3) 43T69381 43T69375 P.C. Board ASSY P.C. Board Assy (RAS-18UKPX3-T2) (RAS-24UKHP-E3) 43T62003 Clamp, Cord – 77 –... -
Page 80: Indoor Unit
43T22002 M-Bearing ASSY 43T00049 Grille ASSY (For Heat pump model) 43T39015 Base, Bearing 43T00050 Grille ASSY (For cooling only model) 43T03013 Back Body ASSY (RAS-24UKHP-E3, 43T80306 Air Filter (L) RAS-18UKHP-E3, RAS-24UKP-E3, 43T80304 Air Filter (R) RAS-24UKP-AR3, RAS-18UKP-E3, 43T80003 Filter, Frame... -
Page 81: Outdoor Unit (Ras-24Uah-E3)
FILE NO. SVM-04008 11-3. Outdoor Unit (RAS-24UAH-E3) 33, 34 12, 14 11, 13 41: Capillary Tube, 0.8 Dia. Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T49012 Base, Spring, B 43T00025 Panel, Front 43T49019 Spring, Buffer 43T00026 Panel, Side 43T21315 Motor, Fan, AC 220 –... -
Page 82: Outdoor Unit (Ras-18Uah-E3)
FILE NO. SVM-04008 11-4. Outdoor Unit (RAS-18UAH-E3) Location Part Location Part Description Description 43T47007 Capillary Tube, 1.2 Dia. 43005144 Cabinet, Front 43T49008 Cushion, Rubber 43T00005 Cabinet, Back 43T55316 MF Capacitor (45µF 370 V) 43T00004 Cabinet, Side 43T55318 MF Capacitor (2µF 450 V) 43T42305 Base 43T60324 Terminal Block, 6P 43T00011 Plate, Packed, Valve... -
Page 83: Outdoor Unit (Ras-24Ua-E3, Ras-24Uax3, Ras-24Uax3-T)
FILE NO. SVM-04008 11-5. Outdoor Unit (RAS -24UA-E3, RAS -24UAX3, RAS -24UAX3-T) Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T62014 Protector, Cord 43T00025 Panel, Front 43T62015 Protector, Cord 43T00026 Panel, Side 43T49309 Rubber Cushion 43T42307 Base Assembly Motor, Fan, AC 220 −... -
Page 84: Outdoor Unit (Ras-24Ua-Ar3)
FILE NO. SVM-04008 11-6. Outdoor Unit (RAS -24UA-AR3) Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T62015 Protector, Cord 43T00025 Panel, Front Rubber Cushion 43T49309 43T00026 Panel, Side 43T21316 Motor, Fan, AC220-240 V 50 Hz 43T42307 Base Assembly 43T20301 F an, Propeller, 491 43T19318 Guard, Fin... -
Page 85: Outdoor Unit (Ras-18Uax3-T2)
FILE NO. SVM-04008 11-7. Outdoor Unit (RAS -18UAX3-T2) Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T62014 Protector, Cord 43T00025 Panel, Front 43T62015 Protector, Cord 43T00026 Panel, Side 43T49008 Rubber Cushion 43T42002 Base Assembly Motor, Fan, AC220-240 V 50 Hz 43T21314 43T19318 Guard, Fin 43T20301... -
Page 86: Outdoor Unit (Ras-18Ua-E3, Ras-18Uax2)
FILE NO. SVM-04008-(1) 11-8. Outdoor Unit (RAS -18UA-E3, RAS-18UAX3) Location Part Location Part Description Description 43T46311 Valve, Packed 6.35 Dia. 43005144 Cabinet, Front 43005143 Cabinet, Side 43T47020 Bonnet, 6.35 Dia. 43T46019 Valve, Packed 12.7 Dia. 43T42306 Base 43T00378 Plate, Packed, Valve 43T47018 Bonnet, 12.7 Dia. -
Page 87: Outdoor Unit (Ras-18Ua-Ar3)
FILE NO. SVM-04008 11-9. Outdoor Unit (RAS -18UA-AR3) Location Part Location Part Description Description 43005144 Cabinet, F ront 43T47020 Bonnet, 6.35 Dia. 43005143 Cabinet, Side 43T46019 Valve, Packed 12.7 Dia. 43T42306 Base 43T47018 Bonnet, 12.7 Dia. 43T00378 Plate, Packed, Valve 43T47309 Capillary Tube, 0.8 Dia. - Page 88 FILE NO. SVM-03010(1) TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND. – 87 –...