Toshiba RAS-24UAH-E-1 Service Manual
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Toshiba RAS-24UAH-E-1 Service Manual

Toshiba RAS-24UAH-E-1 Service Manual

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FILE NO. SVM-03010(1)

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE
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
18 Class
24 Class
(Heat pump model)
(Cooling only model)
Revised on Aug., 2003

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  • Page 1: Service Manual

    FILE NO. SVM-03010(1) SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE 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...

  • Page 2: Table Of Contents

    FILE NO. SVM-03010(1) CONTENTS SPECIFICATIONS CONSTRUCTION VIEWS Indoor Unit Outdoor Unit (RAS-24UAH-E-1, RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1, RAS-24UAX-T-1, RAS-18UAX2-T2) Outdoor Unit (RAS-18UAH-E2) Outdoor Unit (RAS-18UA-E2, RAS-18UAX2, RAS-18UA-AR2) WIRING DIAGRAM RAS-24UKHP-E-1 / RAS-24UAH-E-1 RAS-18UKHP-E2 / RAS-18UAH-E2 RAS-24UKP-E-1 / RAS-24UA-E-1, RAS-24UKP-AR-1 / RAS-24UA-AR-1 RAS-24UKPX-1 / RAS-24UAX-1, RAS-24UKPX-T-1 / RAS-24UAX-T-1...

  • Page 3: File No. Svm

    Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) Troubleshooting for P.C. Board 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. EXPLODED VIEWS AND PARTS LIST...

  • Page 4: Specifications

    FILE NO. SVM-03010(1) 1. SPECIFICATIONS RAS-24UKHP-E-1 RAS-24UKP-E-1 RAS-24UKPX-1 RAS-24UKP-AR-1 RAS-24UKPX-T-1 MODEL 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 220 V 240 V 220 V 240 V 220 V 240 V 220 V 240 V 220 V...
  • Page 5 FILE NO. SVM-03010(1) RAS-18UKHP-E2 RAS-18UKP-E2 RAS-18UKPX2 RAS-18UKP-AR2 RAS-18UKPX2-T2 MODEL RAS-18UAH-E2 RAS-18UA-E2 RAS-18UAX2 RAS-18UA-AR2 RAS-18UAX2-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-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...

  • Page 7: Construction Views

    FILE NO. SVM-03010(1) 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-18UKPX2-T2 : Flare ∅15.88) Wireless remote control (Flare ∅6.35) (For 18 series except RAS-18UKPX2-T2 : Flare ∅12.7)

  • Page 8: Outdoor Unit

    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) – 7 –...
  • Page 9 FILE NO. SVM-03010(1) 2-3. Outdoor Unit (RAS-18UAH-E2) – 8 –...

  • Page 10: Outdoor Unit (Ras-18Ua-E2, Ras-18Uax2, Ras-18Ua-Ar2)

    FILE NO. SVM-03010(1) 2-4. Outdoor Unit (RAS-18UA-E2, RAS-18UAX2, RAS-18UA-AR2) – 9 –...

  • Page 11: Wiring Diagram

    FILE NO. SVM-03010(1) 3. WIRING DIAGRAM 3-1. RAS-24UKHP-E-1 / RAS-24UAH-E-1 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-E2 / Ras-18Uah-E2

    FILE NO. SVM-03010(1) 3-2. RAS-18UKHP-E2 / RAS-18UAH-E2 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 DC12V...

  • Page 13: Ras-24Ukp-E-1 / Ras-24Ua-E-1, Ras-24Ukp-Ar-1 / Ras-24Ua

    FILE NO. SVM-03010(1) 3-3. RAS-24UKP-E-1 / RAS-24UA-E-1, RAS-24UKP-AR-1 / RAS-24UA-AR-1 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...

  • Page 14: Ras-24Ukpx-1 / Ras-24Uax-1, Ras-24Ukpx-T-1 / Ras-24Uax

    FILE NO. SVM-03010(1) 3-4. RAS-24UKPX-1 / RAS-24UAX-1, RAS-24UKPX-T-1 / RAS-24UAX-T-1 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...

  • Page 15: Ras-18Ukp-E2 / Ras-18Ua-E2

    FILE NO. SVM-03010(1) 3-5. RAS-18UKP-E2 / RAS-18UA-E2 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-18Ukpx2 / Ras-18Uax2

    FILE NO. SVM-03010(1) 3-6. RAS-18UKPX2 / RAS-18UAX2 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 DC12V...

  • Page 17: Ras-18Ukp-Ar2 / Ras-18Ua-Ar2

    FILE NO. SVM-03010(1) 3-7. RAS-18UKP-AR2 / RAS-18UA-AR2 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 DC12V...

  • Page 18: Ras-18Ukpx2-T2 / Ras-18Uax2-T2

    FILE NO. SVM-03010(1) 3-8. RAS-18UKPX2-T2 / RAS-18UAX2-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 VARISTOR SG01 T6.3A 250 V DB01 F01 FUSE DC15V DC0V...

  • Page 19: Specification Of Electrical Parts

    Resistor (R01) RF-5TK4R7 Louver motor MP35EA12 Output (Rated) 2 W, 10 poles, 1 phase, DC 12 V 4-2. Outdoor Unit (RAS-24UAH-E-1) Parts name Type Specifications Output (Rated) 2200 W, 2 poles, 1 phase, 220 – 240 V, 50 Hz Compressor PH310X3-4MM Winding resistance (Ω)

  • Page 20: Outdoor Unit (Ras-18Uah-E2)

    FILE NO. SVM-03010(1) 4-3. Outdoor Unit (RAS-18UAH-E2) 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) 42 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) KFG6-71SB5P-T3 Winding resistance (Ω) Red-Black...

  • Page 21: Outdoor Unit (Ras-24Ua-E-1, Ras-24Ua-Ar-1)

    FILE NO. SVM-03010(1) 4-5. Outdoor Unit (RAS-24UA-E-1, RAS-24UA-AR-1) Parts name Type Specifications Output (Rated) 2200 W, 2 poles, 1 phase, 220 – 240 V, 50 Hz Compressor PH280X3-4MS Winding resistance (Ω) (at 20°C) 0.82 2.72 Output (Rated) 65 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz KFG6-71SB5P-T Winding resistance (Ω) Red-Black...

  • Page 22: Outdoor Unit (Ras-18Ua-E2)

    FILE NO. SVM-03010(1) 4-7. Outdoor Unit (RAS-18UA-E2) 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) 42 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) HF-240-42B Winding resistance (Ω)

  • Page 23: Outdoor Unit (Ras-18Uax2-T2)

    FILE NO. SVM-03010(1) 4-10. Outdoor Unit (RAS-18UAX2-T2) Parts name Type Specifications Output (Rated) 1500 W, 2 poles, 1 phase, 220 – 240 V, 50 Hz Compressor PH210T2-4L7 Winding resistance (Ω) (at 20°C) 1.07 2.20 Output (Rated) 65 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) KFG6-71SB5P-T Winding resistance (Ω)

  • Page 24: Refrigeration Cycle Diagram

    FILE NO. SVM-03010(1) 5. REFRIGERATION CYCLE DIAGRAM 5-1. RAS-24UKHP-E-1 / RAS-24UAH-E-1 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 25: Ras-18Ukhp-E2 / Ras-18Uah-E2

    FILE NO. SVM-03010(1) 5-2. RAS-18UKHP-E2 / RAS-18UAH-E2 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 26: Note

    FILE NO. SVM-03010(1) 5-3. RAS-24UKP-E-1 / RAS-24UA-E-1 RAS-24UKP-AR-1 / RAS-24UA-AR-1 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 Capillary tube ∅0.8x400 s...

  • Page 27: Ras-24Ukpx-1 / Ras-24Uax-1

    FILE NO. SVM-03010(1) 5-4. RAS-24UKPX-1 / RAS-24UAX-1 RAS-24UKPX-T-1 / RAS-24UAX-T-1 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 2JS386DJSM464...

  • Page 28: Ras-18Ukp-E2 / Ras-18Ua-E2

    FILE NO. SVM-03010(1) 5-5. RAS-18UKP-E2 / RAS-18UA-E2 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 ∅2.4x1000 s PH250X3-4LM Compressor Condenser Refrigerant R22 1.06 kg Propeller fan...

  • Page 29: Ras-18Ukpx2 / Ras-18Uax2

    FILE NO. SVM-03010(1) 5-6. RAS-18UKPX2 / RAS-18UAX2 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 ∅2.0x600 s Compressor 2JS350DJSM486 Condenser Refrigerant R22 1.0 kg Propeller fan...

  • Page 30: Ras-18Ukp-Ar2 / Ras-18Ua-Ar2

    FILE NO. SVM-03010(1) 5-7. RAS-18UKP-AR2 / RAS-18UA-AR2 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 ∅2.0x1000 s Compressor PH250X3-4LM Capillary tube ∅0.8x900 s Condenser Refrigerant...
  • Page 31 FILE NO. SVM-03010(1) 5-8. RAS-18UAX2-T2 Indoor unit Evaporator 0.49 m 0.39 m (Connecting pipe) (Connecting pipe) ∅6.35 ∅15.88 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 Compressor PH250X3-4LM Condenser Refrigerant R22 1.17 kg Propeller fan Mark (...

  • Page 32: Control Block Diagram

    FILE NO. SVM-03010(1) 6. CONTROL BLOCK DIAGRAM 6-1. RAS-24UKHP-E-1, RAS18UKHP-E2 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 Infrared Rays Signal Receiver Display PRE DEF.

  • Page 33: Ras-24Ukp-E-1 / Ras-24Ua-E-1, Ras-24Ukpx-1 / Ras-24Uax-1

    FILE NO. SVM-03010(1) 6-2. RAS-18UKP-E2 / RAS-18UA-E2, RAS-18UKPX2 / RAS-18UAX2, RAS-18UKP-AR2 / RAS-18UA-AR2, RAS-18UKPX2-T2 / RAS-18UAX2-T2 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 Indoor Unit Control Panel M.C.U. Operation Functions Heat Exchanger Sensor Display • Louver Control Timer •...

  • Page 34: Operation Description

    FILE NO. SVM-03010(1) 7. OPERATION DESCRIPTION 7-1. Outline of Air Conditioner Control 7-1-1. Louver control (1) Vertical air flow louver This is a fixed capacity type air conditioner, which uses Position of veritcal air flow louver is automatically a DC motor for an indoor fan. The DC motor drive controlled according to the operation mode.

  • Page 35: Description Of Operation Circuit

    FILE NO. SVM-03010(1) 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 36 FILE NO. SVM-03010(1) 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...
  • Page 37 FILE NO. SVM-03010(1) (3) The indoor heat exchanger restricts revolving 7-2-5. Automatic operation speed of the fan motor to prevent a cold draft. The ([MODE] button on the remote control is set upper limit of the revolving speed is shown in to the automatic operation.) Fig.

  • Page 38: Hi Power Mode

    FILE NO. SVM-03010(1) 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 39: Auto Restart Function

    FILE NO. SVM-03010(1) 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 40: Filter Check Lamp

    FILE NO. SVM-03010(1) 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 41: 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 42 FILE NO. SVM-03010(1) 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.

  • Page 43: Installation Diagram Of Indoor And Outdoor Units

    FILE NO. SVM-03010(1) 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 Purifying filter...

  • Page 44: Installation

    : ∅15.88 mm (24 series and RAS-18UKPX2-T2 / RAS-18UAX2-T2) Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit> RAS-24UAH-E-1, RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1, RAS-24UAX-T-1, RAS-18UAX2-T2 600 mm Air inlet 120 mm Air outlet Drain outlet Fig.
  • Page 45 FILE NO. SVM-03010(1) 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 Purifying filter x 2 Mounting screw ∅4 x 25 s x 8 Wireless remote control x 1 Filter frame x 2 Pan head wood screw...

  • Page 46: Indoor Unit

    FILE NO. SVM-03010(1) 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 47 FILE NO. SVM-03010(1) <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 48 FILE NO. SVM-03010(1) 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 49 FILE NO. SVM-03010(1) 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 50 FILE NO. SVM-03010(1) 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 •...

  • Page 51: Outdoor Unit

    FILE NO. SVM-03010(1) 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 52 FILE NO. SVM-03010(1) (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 53 FILE NO. SVM-03010(1) <Stripping length of connecting cable> TO CHARGE REFRIGERANT RAS-24UKHP-E-1 / RAS-24UAH-E-1 RAS-18UKHP-E2 / RAS-18UAH-E2 Terminal block 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...

  • Page 54: How To Set Remote Control Selector Switch

    FILE NO. SVM-03010(1) 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 55: Others

    FILE NO. SVM-03010(1) 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 56: Troubleshooting Chart

    FILE NO. SVM-03010(1) 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 57: Primary Judgement

    FILE NO. SVM-03010(1) 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 58: Self-Diagnosis By Remote Control (Check Code)

    FILE NO. SVM-03010(1) 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 59 FILE NO. SVM-03010(1) 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.

  • Page 60: How To Diagnose Faulty Part

    FILE NO. SVM-03010(1) 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 61 FILE NO. SVM-03010(1) [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 62 FILE NO. SVM-03010(1) [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 63 FILE NO. SVM-03010(1) [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.

  • Page 64: Troubleshooting For Indoor Unit

    FILE NO. SVM-03010(1) 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 65 FILE NO. SVM-03010(1) 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 66 FILE NO. SVM-03010(1) 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 67 FILE NO. SVM-03010(1) 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- – 66 –...
  • Page 68 FILE NO. SVM-03010(1) <Inspection procedure> -Cooling and heating model- – 67 –...
  • Page 69 FILE NO. SVM-03010(1) 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.

  • Page 70: Troubleshooting For Wiring (Interconnect Cable And Serial Signal Wire)

    FILE NO. SVM-03010(1) 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 2 and 3 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: •...

  • Page 71: Troubleshooting For P.c. Board

    FILE NO. SVM-03010(1) 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 72 FILE NO. SVM-03010(1) 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 73 FILE NO. SVM-03010(1) 9-8-3. P.C. Board layout Top View Bottom View – 72 –...

  • Page 74: Troubleshooting For Remote Control

    FILE NO. SVM-03010(1) 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 75: Part Replacement

    FILE NO. SVM-03010(1) 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 76 FILE NO. SVM-03010(1) 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.

  • Page 77: Outdoor Unit

    FILE NO. SVM-03010(1) 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) 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 78 FILE NO. SVM-03010(1) 10-3. Outdoor Unit (RAS-18UAH-E2) 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 ∅4 x 10L) 3) Remove 2 cord clamps (4 screws ∅4 x 22L) and Remove...

  • Page 79: Outdoor Unit (Ras-18Ua-E2, Ras-18Uax2, Ras-18Ua-Ar2)

    FILE NO. SVM-03010(1) 10-4 Outdoor Unit (RAS-18UA-E2, RAS-18UAX2, RAS-18UA-AR2) 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 80: Exploded Views And Parts List

    FILE NO. SVM-03010(1) 11. EXPLODED VIEWS AND PARTS LIST 11-1. Indoor Unit (E-Parts Assy) Location Part Location Part Description Description 43T60002 Terminal Block, 3P AC300V, 20 A 43T69065 P.C. Board ASSY (RAS-24UKP-E-1, 43T50004 Sensor, Heat Exchanger RAS-24UKPX-1, RAS-24UKP-AR-1, 10 kΩ 25°C RAS-24UKPX-T-1) 43T69005 Sensor, Thermostat 10 kΩ...

  • Page 81: Indoor Unit

    FILE NO. SVM-03010(1) 11-2. Indoor Unit Location Part Location Part Description Description 43T00048 Front Panel, ASSY 43T21327 Motor, Fan 43T00049 Grille ASSY (For Heat pump model) 43T20014 Fan, Cross Flow 43T00050 Grille ASSY (For cooling only model) 43T22008 Bearing 43T80014 Air Filter (L) 43T39015 Base, Bearing...

  • Page 82: Outdoor Unit (Ras-24Uah-E-1)

    FILE NO. SVM-03010(1) 11-3. Outdoor Unit (RAS-24UAH-E-1) 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 83: Outdoor Unit (Ras-18Uah-E2)

    FILE NO. SVM-03010(1) 11-4. Outdoor Unit (RAS-18UAH-E2) 29, 30 17, 18 15, 16 19: Capillary Tube, 0.8 Dia. 20: Capillary Tube, 1.2 Dia. 37: Capillary Tube, 2.0 Dia. Location Part Location Part Description Description 43005144 Cabinet, Front 43T47007 Capillary Tube, 1.2 Dia. 43T00005 Cabinet, Back 43T49011 Base, Spring, A 43T00004 Cabinet, Side...

  • Page 84: Outdoor Unit

    FILE NO. SVM-03010(1) 11-5. Outdoor Unit (RAS-24UA-E-1, RAS-24UAX-1, RAS-24UA-AR-1, RAS-24UAX-T-1, RAS-18UAX2-T2 ) 12, 14 44: Capillary Tube, 2.4 Dia. 45: Capillary Tube, 0.8 Dia. Location Part Location Part Description Description 43T00024 Panel, Air Outlet 43T49012 Base, Spring, B (RAS-24UA-E-1, 43T00025 Panel, Front RAS-24UA-AR-1, RAS-18UAX2-T2) 43T00026...

  • Page 85: Outdoor Unit (Ras-18Ua-E2)

    FILE NO. SVM-03010(1) 11-6. Outdoor Unit (RAS-18UA-E2) 17, 18 15, 16 40: Capillary Tube, 2.4 Dia. Location Part Location Part Description Description 43T47020 Bonnet, 6.35 Dia. 43005144 Cabinet, Front 43T46019 Valve, Packed 12.7 Dia. 43005143 Cabinet, Side 43T47018 Bonnet, 12.7 Dia. 43T42305 Base 43T49011 Base, Spring, A 43T00378 Plate, Packed, Valve...

  • Page 86: Outdoor Unit (Ras-18Uax2)

    FILE NO. SVM-03010(1) 11-7. Outdoor Unit (RAS-18UAX2) 17, 18 15, 16 20: Capillary Tube, 2.0 Dia. 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-Ar2)

    FILE NO. SVM-03010(1) 11-8. Outdoor Unit (RAS-18UA-AR2) 17, 18 15, 16 19: Capillary Tube, 0.8 Dia. 20: Capillary Tube, 2.0 Dia. Location Part Location Part Description Description 43T46019 Valve, Packed 12.7 Dia. 43005144 Cabinet, Front 43T47018 Bonnet, 12.7 Dia. 43005143 Cabinet, Side 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 –...

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