Toshiba RAS-18UFHP-E3 Service Manual
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Toshiba RAS-18UFHP-E3 Service Manual

Air-conditioner under ceiling / console type
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SERVICE MANUAL

AIR-CONDITIONER
UNDER CEILING / CONSOLE TYPE
RAS-18UFHP-E3 / RAS-18UAH-E3
RAS-18UFP-E3 / RAS-18UA-E3
RAS-18UFPX3 / RAS-18UAX3
RAS-18UFP-AR3 / RAS-18UA-AR3
RAS-18UFPX3-T2 / RAS-18UAX3-T2
RAS-24UFHP-E3 / RAS-24UAH-E3
RAS-24UFP-E3 / RAS-24UA-E3
RAS-24UFPX3 / RAS-24UAX3
RAS-24UFP-AR3 / RAS-24UA-AR3
RAS-24UFPX3-T / RAS-24UAX3-T
18 Class
(Heat pump model)
FILE NO. SVM-04032
18 Class
(Cooling only model)
24 Class
June 2004

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Summary of Contents for Toshiba RAS-18UFHP-E3

  • Page 1: Service Manual

    FILE NO. SVM-04032 SERVICE MANUAL AIR-CONDITIONER UNDER CEILING / CONSOLE TYPE RAS-18UFHP-E3 / RAS-18UAH-E3 RAS-18UFP-E3 / RAS-18UA-E3 RAS-18UFPX3 / RAS-18UAX3 RAS-18UFP-AR3 / RAS-18UA-AR3 RAS-18UFPX3-T2 / RAS-18UAX3-T2 RAS-24UFHP-E3 / RAS-24UAH-E3 RAS-24UFP-E3 / RAS-24UA-E3 RAS-24UFPX3 / RAS-24UAX3 RAS-24UFP-AR3 / RAS-24UA-AR3 RAS-24UFPX3-T / RAS-24UAX3-T...

  • Page 2: Table Of Contents

    Outdoor Unit (RAS-18UAH-E3) Outdoor Unit (RAS-18UA-E3, RAS-18UAX3, RAS-18UA-AR3) Outdoor Unit (RAS-24UAH-E3, RAS-24UA-E3, RAS-24UAX3, RAS-24UA-AR3 RAS-24UAX3-T, RAS018UAX3-T2) 3. WIRING DIAGRAM RAS-18UFHP-E3 / RAS-18UAH-E3 RAS-18UFP-E3 / RAS-18UA-E3, RAS-18UFPX3 / RAS-18UAX3 RAS-18UFP-AR / RAS-18UA-AR RAS-18UFPX3-T2 / RAS-18UAX3-T2 RAS-24UFHP-E3 / RAS-24UAH-E3 RAS-24UFP-E3 / RAS-24UA-E3...

  • Page 3: 8-5 Outdoor Unit

    FILE NO. SVM-04032 6. CONTROL BLOCK DIAGRAM 6-1 RAS-18UFHP-E3, RAS-24UFHP-E3 6-2 RAS-18UFP-E3, RAS-18UFPX3, RAS-18UFP-AR3, RAS-18UFPX3-T2 RAS-24UFP-E3, RAS-24UFPX3, RAS-24UFP-AR3, RAS-24UFPX3-T 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...
  • Page 4 FILE NO. SVM-04032 11. EXPLODED VIEWS AND PARTS LIST 11-1 Indoor Unit (E-Parts Assy) 11-2 Indoor Unit 11-3 Outdoor Unit (RAS-18-UFHP-E3) 11-4 Outdoor Unit (RAS-18UA-E3, RAS-18UAX3) 11-5 Indoor Unit (RAS-18UA-AR3) 11-6 Outdoor Unit (RAS-18UAX3-T2) 11-7 Outdoor Unit (RAS-24UAH-E3) 11-8 Outdoor Unit (RAS-24UA-E3, RAS-24UAX3, RAS-24UAX3-T) 11-9 Outdoor Unit (RAS-24UA-AR3) −...

  • Page 5: Ras-18Ufhp-E3 / Ras-18Uah-E3

    FILE NO. SVM-04032 1. SPECIFICATIONS RAS-18UFP-E3/18UA-E3 MODEL RAS-18UFHP-E3/18UAH-E3 RAS-18UFP-AR3/18UA-AR3 RAS-18UFPX3-T2/18UAX3-T2 ITEM RAS-18UFPX3/18UAX3 Cooling Heating Cooling Capacity 220V 240V 220V 240V 220V 240V 220V 240V 220V 5.00 5.70 5.80 5.20 5.25 5.30 5.35 5.15 Phase 1∅ Power source 220 – 240...

  • Page 6: Ras-24Ufp-E3 / Ras-24Ua-E3

    FILE NO. SVM-04032 MODEL RAS-24UFP-E3/24UA-E3 RAS-24UFHP-E3/24UAH-E3 RAS-24UFPX3-T/24UAX3-T RAS-24UFPX3/24UAX3 ITEM Cooling Heating Cooling Capacity 220V 240V 220V 240V 220V 240V 220V 6.30 6.30 6.80 6.90 6.40 6.45 6.10 Phase 1∅ Power source 220 – 240 Power consumption 2480 2650 2490 2670 2260 2400 2260...
  • Page 7 FILE NO. SVM-04032 MODEL RAS-24UFP-AR3 / 24UA-AR3 ITEM Cooling Capacity 220V 240V 6.40 6.45 Phase 1∅ Power source 220 – 240 Power consumption 2400 2260 Power factor Indoor 0.45 Running current Outdoor 10.9 10.8 Starting current Moisture removal lit/h Indoor (H/M/L) 46/42/37 Noise Outdoor...

  • Page 8: Ras-24Ufpx3 / Ras-24Uax3 Ras-24Ufp-Ar3 / Ras-24Ua-Ar3

    Outdoor unit inlet air temperature (WB) 24°C 6°C 24°C Note : 2 • Charge refrigerant according to the table below. RAS-18UFHP-E3 / RAS-18UAH-E3 RAS-24UFHP-E3 / RAS-24UAH-E3 RAS-18UFP-E3 / RAS-18UA-E3 RAS-24UFP-E3 / RAS-24UA-E3 Refrigerant RAS-18UFPX3 / RAS-18UAX3 RAS-24UFPX3 / RAS-24UAX3 RAS-18UFP-AR3 / RAS-18UA-AR3...

  • Page 9: Construction Views

    FILE NO. SVM-04032 2. CONSTRUCTION VIEWS 2-1. Indoor Unit Front panel 1093 Knock out system Grille air inlet Back Body 200 Min 1093 For stud bolt (∅8 - ∅10) Installation plate 1015 For stud bolt (∅6) Mount plate M10 Suspention bolt Wireless remote control Knock out system UNDER CEILING &...
  • Page 10 FILE NO. SVM-04032 2-2. Outdoor Unit (RAS-18UAH-E3) – 9 –...
  • Page 11 FILE NO. SVM-04032 2-3. Outdoor Unit (RAS-18UA-E3, RAS-18UAX3, RAS-18UA-AR3) – 10 –...
  • Page 12 FILE NO. SVM-04032 2-4. Outdoor Unit (RAS-24UAH-E3, RAS-24UA-E3, RAS-24UAX3, RAS-24UA-AR3, RAS-24UAX3-T, RAS-18UAX3-T2) – 11 –...
  • Page 13 FILE NO. SVM-04032 3. WIRING DIAGRAM 3-1. RAS-18UFHP-E3 / RAS-18UAH-E3 INFRARED RAYS RECEIVE AND INDICATION PARTS LOUVER 1 2 3 4 5 6 7 8 9 MOTOR CN25 1 2 3 4 5 6 7 8 9 COLOR IDENTIFICATION 6 5 4...
  • Page 14 FILE NO. SVM-04032 3-2. RAS-18UFP-E3 / RAS-18UA-E3, RAS-18UFPX3 / RAS-18UAX3 INFRARED RAYS RECEIVE AND INDICATION PARTS LOUVER 1 2 3 4 5 6 7 8 9 MOTOR CN25 1 2 3 4 5 6 7 8 9 COLOR IDENTIFICATION 6 5 4 3 2 1 1 2 3 4 5 6...
  • Page 15 FILE NO. SVM-04032 3-3. RAS-18UFP-AR3 / RAS-18UA-AR3 INFRARED RA YS RECEIVE AND INDICA TION P ARTS LOUVER 1 2 3 4 5 6 7 8 9 MOTOR CN25 1 2 3 4 5 6 7 8 9 COLOR IDENTIFICA TION 6 5 4 3 2 1 1 2 3...
  • Page 16 FILE NO. SVM-04032 3-4. RAS-18UFPX3-T2 / RAS-18UAX3-T2 INFRARED RAYS RECEIVE AND INDICATION PARTS LOUVER 1 2 3 4 5 6 7 8 9 MOTOR CN25 1 2 3 4 5 6 7 8 9 COLOR IDENTIFICATION 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9...
  • Page 17 FILE NO. SVM-04032 3-5. RAS-24UFHP-E3 / RAS-24UAH-E3 INFRARED RAYS RECEIVE AND INDICATION PARTS LOUVER 1 2 3 4 5 6 7 8 9 MOTOR CN25 1 2 3 4 5 6 7 8 9 COLOR IDENTIFICATION 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9...
  • Page 18 FILE NO. SVM-04032 3-6. RAS-24UFP-E3 / RAS-24UA-E3 RAS-24UFPX3 / RAS-24UAX3 RAS-24UFP-AR3 / RAS-24UA-AR3 RAS-24UFPX3-T / RAS-24UAX3-T INFRARED RAYS RECEIVE AND INDICATION PARTS LOUVER 1 2 3 4 5 6 7 8 9 MOTOR CN25 1 2 3 4 5 6 7 8 9 COLOR IDENTIFICATION 6 5 4...
  • Page 19 FILE NO. SVM-04032 4. SPECIFICATION OF ELECTRICAL PARTS 4-1. Indoor Unit Parts name Type Specifications Output (Rated) 50W, 220 − 240V Fan motor (for indoor) AFP-220-50-4A Thermo sensor (TA-sensor) ——— 10kΩ at 25°C DC-DC transformer (T01) SWT-47 DC 390V, Secondary DC 12V, 7V Microcomputer TMP87CM40AN Heat exchanger sensor...

  • Page 20: Outdoor Unit (Ras-18Uax3-T)

    FILE NO. SVM-04032 4-3. Outdoor Unit (RAS-18UAX3, RAS-18UA-E3) 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) 42 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) HF-240-42B-1 Winding resistance (Ω)
  • Page 21 FILE NO. SVM-04032 4-6. Outdoor Unit (RAS-24UAH-E3) Parts name Type Specifications Output (Rated) 2200 W, 2 poles, 1 phase, 220 – 240 V, 50 Hz Compressor PH310X3-4MM Winding resistance (Ω) (at 20°C) 2.16 Output (Rated) 65 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz Fan motor (for outdoor) KFG6-71SB5P-T1 Winding resistance (Ω) Red-Black...

  • Page 22: Outdoor Unit (Ras-24Ua-Ar)

    FILE NO. SVM-04032 4-8. Outdoor Unit (RAS-24UA-AR3) Parts name Type Specifications Output (Rated) 2200 W, 2 poles, 1 phase, 220 − 240 V, 50 Hz Compressor 2JS386D5BB02 Winding resistance (Ω ) 1.979 (at 20 °C) 0.886 Output (Rated) 65 W, 6 poles, 1 phase, 220 − 240 V, 50 Hz Fan motor (for outdoor) Winding resistance (Ω...
  • Page 23 FILE NO. SVM-04032 5. REFRIGERATION CYCLE DIAGRAM 5-1. RAS-18UFHP-E3 / RAS-18UAH-E3 Indoor unit Evaporator Cooling 0.39m 0.49m Heating (Connecting pipe) (Connecting pipe) ∅12.70 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅12.70 mm O.D.:6.35 mm O.D.:12.70 mm Packed valve Packed valve (∅12.70)
  • Page 24 FILE NO. SVM-04032 5-2. RAS-18UFP-E3 / RAS-18UA-E3 RAS-18UFPX3 / RAS-18UAX3 Indoor unit Evaporator 0.39m 0.49m (Connecting pipe) (Connecting pipe) ∅12.70 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅12.70 mm O.D.:6.35 mm O.D.:12.70 mm Packed valve Packed valve (∅6.35) (∅12.70) Capillary tube ∅2.0x700S...
  • Page 25 FILE NO. SVM-04032 5-3. RAS-18UFP-AR3 / RAS-18UA-AR3 Indoor unit Evaporator 0.39m 0.49m (Connecting pipe) (Connecting pipe) ∅12.70 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅12.70 mm O.D.:6.35 mm O.D.:12.70 mm Packed valve Packed valve (∅6.35) (∅12.70) Capillary tube ∅2.0x1000S Capillary tube Accumulator...
  • Page 26 FILE NO. SVM-04032 5-4. RAS-18UFPX3-T2 / RAS-18UAX3-T2 Indoor unit Evaporator 0.39m 0.49m (Connecting pipe) (Connecting pipe) ∅15.88 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅15.88 mm O.D.:6.35 mm O.D.:15.88 mm Packed valve Packed valve (∅6.35) (∅15.88) Accumulator Capillary tube ∅2.0x800S Compressor PH210T2-4L7 Condenser...
  • Page 27 FILE NO. SVM-04032 5-5. RAS-24UFHP-E3 / RAS-24UAH-E3 Indoor unit Evaporator Cooling 0.39m 0.49m Heating (Connecting pipe) (Connecting pipe) ∅15.88 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅15.88 mm O.D.:6.35 mm O.D.:15.88 mm Packed valve Packed valve (∅6.35) (∅15.88) Heating Cooling 4-way valve...
  • Page 28 FILE NO. SVM-04032 5-6. RAS-24UFP-E3 / RAS-24UA-E3 RAS-24UFPX3 / RAS-24UAX3 RAS-24UFPX3-T / RAS-24UAX3-T Indoor unit Evaporator 0.39m 0.49m (Connecting pipe) (Connecting pipe) ∅15.88 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅15.88 mm O.D.:6.35 mm O.D.:15.88 mm Packed valve Packed valve (∅6.35) (∅15.88 )
  • Page 29 FILE NO. SVM-04032 5-7. RAS-24UFP-AR3 / RAS-24UA-AR3 Indoor unit Evaporator 0.39m 0.49m (Connecting pipe) (Connecting pipe) ∅15.88 mm ∅6.35 mm Multi blade fan 0.39m (Flexible pipe) ∅15.88 mm O.D.:6.35 mm O.D.:15.88 mm Packed valve Packed valve (∅6.35) (∅15.88 ) Accumulator Capillary tube ∅2.4x1400S Compressor...

  • Page 30: Control Block Diagram

    FILE NO. SVM-04032 6. CONTROL BLOCK DIAGRAM 6-1. RAS-18UFHP-E3, RAS-24UFHP-E3 Indoor Unit Control Panel M.C.U. 8 MHz Hi POWER Functions Heat Exchanger Sensor Display • Louver Control FILTER Sign • 3-minute Delay at Restart for Compressor Temperature Sensor Display • Motor Revolution Control PRE DEF.

  • Page 31: Ras-18Ufp-E3, Ras-18Ufpx3, Ras-18Ufp-Ar3, Ras-18Ufpx3-T

    FILE NO. SVM-04032 6-2. RAS-18UFP-E3, RAS-18UFPX3, RAS-18UFP-AR3, RAS-18UFPX3-T2 RAS-24UFP-E3, RAS-24UFPX3, RAS-24UFP-AR3, RAS-24UFPX3-T Indoor Unit Control Panel M.C.U. 8 MHz Hi POWER Functions Heat Exchanger Sensor Display • Louver Control FILTER Sign • 3-minute Delay at Restart for Compressor Temperature Sensor Display •...

  • Page 32: Operation Description

    • Receiving of information of the operation status Table 7-1-1 and judging of the information or indication of error. RAS-18UFHP-E3 RAS-24UFHP-E3 MODEL Motor speed Air flow level Motor speed Air flow level (2) Role of outdoor unit controller...

  • Page 33: Description Of Operation Circuit

    FILE NO. SVM-04032 7-2. Description of Operation Circuit 7-2-2. Cooling operation ([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 on the remote control are...
  • Page 34 FILE NO. SVM-04032 7-2-4. Heating operation *Heating and cooling model only 7-2-3. Dry operation ([MODE] button on the remote control is set ([MODE] button on the remote control is set to to the dry operation.) the heating operation.) (1) The compressor, 4-way valve, outdoor fan and (1) The compressor, 4-way valve, outdoor fan and operation display on the remote control are operation display on the remote control are...

  • Page 35: Cooling Operation

    *3: SUL means Super Ultra Low. Fan only operation *4: Calculated from difference in motor speed –1 between SUL and HIGH. Heating operation Fig. 7-2-8 Cold draft preventing control RAS-18UFHP-E3 RAS-18UFP-E3, RAS-18UFPX3 RAS-24UFHP-E3 RAS-18UPX3-T2 *5 and *6: RAS-18UFP-AR3, RAS-24UFP-E3, RAS-24UFPX3...

  • Page 36: Hi Power Mode

    FILE NO. SVM-04032 7-3. Hi POWER Mode 7-4. High-Temperature Limit Control ([Hi POWER] button on the remote The microcontroller detects the indoor heat exchanger control is pressed.) temperature to prevent pressure of a refrigerating cycle from increasing excessively. When [Hi POWER] button is pressed while the indoor The compressor and outdoor fan motor are controlled unit is in Auto, Cooling or Heating operation, Hi as shown in Fig.

  • Page 37: Auto Restart Function

    FILE NO. SVM-04032 7-7. Auto Restart Function 7-7-1. How to set 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 38: Filter Check Lamp

    FILE NO. SVM-04032 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 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-04032 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, service agency will take adequate countermeasures.

  • Page 41: Installation Diagram Of Indoor And Outdoor Units

    FILE NO. SVM-04032 8-2. Installation Diagram of Indoor and Outdoor Units For installation of the indoor unit, use the paper pattern, which is inside the package box cover. (Under Ceiling Installation) (Console Installation) Hook Installation plate Pipe shield Mounting screw Before install the wireless remote control Wireless remote...
  • Page 42 FILE NO. SVM-04032 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 (RAS-18UF) Gas side each : ∅15.88 mm (RAS-24UF, RAS-18UFPX3-T2) Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit>...
  • Page 43 FILE NO. SVM-04032 11-4. 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 44 FILE NO. SVM-04032 8-3-2. Accessory and installation parts Part Part Part Part name (Q'ty) Part name (Q'ty) Part name (Q'ty) Pan head wood screw ∅3.1 x 16 s x 2 Installation plate x 1 Filter frame x 2 Drain nipple x 1 (Packaged with Wireless remote control x 1 Zeolite filter x 1 the outdoor unit)

  • Page 45: Indoor Unit

    FILE NO. SVM-04032 8-4. Indoor Unit <Remote control usage> • Under Ceiling Installation 8-4-1. Installation place • A place which provides the spaces around the Ceiling indoor unit as shown in the above diagram. • A place where there is no obstacle near the air inlet and outlet.
  • Page 46 FILE NO. SVM-04032 8-4-2. Before installation 8-4-3. After installation <Remove the Air inlet grille> <Install the Air inlet grille> 1. Open the Air inlet grille with both hands. 1. Insert the three Panel arms on the Air inlet grille and 2.
  • Page 47 FILE NO. SVM-04032 8-4-4. Under ceiling installation <Install the indoor unit> 1. Remove the Side covers and the Installation plate For the installation of the indoor unit, use the Paper pattern, which is inside the package box cover. 2. Insert the Suspension bolts into the metal fittings of <Install the Suspension bolts>...
  • Page 48 FILE NO. SVM-04032 • Rear side piping with Drain hose. (Recommended <Piping and Drain hose installation> direction) • The piping direction can be 4 ways as illustrated. • The Drain hose is only one way. Ceiling Upper piping 175 mm or more Rear piping hole ∅80 140 mm...
  • Page 49 FILE NO. SVM-04032 8-4-5. Console installation <Install the indoor unit> • Install the Installation plate 1 at the wall according to • Select the terminal of Selector-SW from [C position] to the Paper pattern . [F position]. • Hang the indoor unit on the hooks of the Installation plate 1.
  • Page 50 FILE NO. SVM-04032 <Piping and Drain hose installation> 8-4-6. Wiring connection • The piping direction can be the following 3 ways with <How to connect the connecting cable> the Drain hose. Terminal cover • Each piping direction should be connected with the Screws Flexible pipe ".
  • Page 51 FILE NO. SVM-04032 8-4-7. Pipe shield for flare nut connection 8-4-8. Drainage 1. Run the Drain hose sloping downward. Joints in liquid and gas pipes of the indoor unit should be insulated with an attached Pipe shield #. NOTE: • The hole should be made at a slight downward slant <How to install the Pipe shield>...

  • Page 52: Outdoor Unit

    FILE NO. SVM-04032 8-5. Outdoor Unit 8-5-2. Refrigerant piping connection 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 Obliquity Warp 90°...
  • Page 53 FILE NO. SVM-04032 <Tightening connection> 8-5-3. Evacuating Align the centers of the connecting pipes and tighten After the piping has been connected to the indoor unit, the flare nut as far as possible with your fingers. Then you can perform the air purge together at once. tighten the nut with a spanner and torque wrench as shown in the figure.
  • Page 54 FILE NO. SVM-04032 8-5-4. Wiring connection TO CHARGE REFRIGERANT 1. Remove the electric parts cover from the outdoor 18 Class 24 Class unit. 2. Connect the connecting cable to the terminal as No need to charge 15 m or less 15 m or less identified with their respective matched numbers on refrigerant...
  • Page 55 FILE NO. SVM-04032 8-6. How to Set Remote Control Selector RAS-18UFPX3-T2 / 18UAX3-T2 RAS-24UFPX3-T / 24UAX3-T Power source 50 Hz, 220 V Single phase Switch Maximum running When two indoor units are installed in seperated current rooms, there is no need to change the selector switch. Plug socket &...

  • Page 56: How To Use Drain Pump Kit Of Option

    FILE NO. SVM-04032 2. Set the remote control selector switch with the 8-7. How to Use Drain Pump Kit of Option remote control In the case of upward drainage from the unit (Under ceiling installation). It is necessary to use Drain pump [B] is indicated on the liquid crystal display when kit of option parts.
  • Page 57 FILE NO. SVM-04032 8-8. Others 8-8-1. Gas leak test Electric parts cover Flare nut connections (Indoor unit) Valve stem cap connection Flare nut connections (Outdoor unit) Service cap connection Valve stem cap connection Fig. 8-8-1 • Check the flare nut connections, valve stem cap connections and service port cap connections for gas leak with a leak detector or soap water.

  • Page 58: Troubleshooting Chart

    FILE NO. SVM-04032 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 4 If there is no trouble corresponding to 9-2, check cables.

  • Page 59: Primary Judgement

    FILE NO. SVM-04032 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 60 FILE NO. SVM-04032 9-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to H 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 opera- tion condition and indicate the information of the self-diagnosis on the display of the remote control...
  • Page 61 FILE NO. SVM-04032 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 62: How To Diagnose Faulty Parts

    FILE NO. SVM-04032 9-5. How to Diagnose Faulty Parts Operation Check item Conceivable principle cause [04 Serial signal error] Measure Item by symptoms Does outdoor unit operate? Connect crossover Are 1, 2 and 3 crossover wires properly. wires connected properly? Connect crossover Is connector properly.
  • Page 63 FILE NO. SVM-04032 [09 Other cycle error] (1) Does compressor operate? Does inner Check charged amount of refrigerant. overload relay Is compressor Check defective overload. (in compressor) turned off shortly? Check compressor. operate? Is TC sensor Failure Replace resistance value compressor.
  • Page 64 FILE NO. SVM-04032 [0C Indoor TA sensor error] Connect CN03 Is CN03 (TA sensor connector) 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] Connect CN01 Is CN01 (TC sensor connector) properly.
  • Page 65 FILE NO. SVM-04032 [19 outdoor TD sensor error] Connect connector Is TD sensor properly. connected properly? Is TD sensor resistance value Replace TD sensor. (50 kΩ at 25°C) normal? Indoor P.C. board is defective. Replace P.C. board. [1E Discharge temp. error] Is protective controller Are wires connected to Connect wires to...

  • Page 66: Troubleshooting For Indoor Unit

    FILE NO. SVM-04032 9-6. Troubleshooting for Indoor Unit Operation 9-6-1. Power can not be turned on. (The unit does not operate at all.) Check item <Primary check> (1) Is the supply voltage normal? Conceivable principle (2) Is the connection to the AC output OK? cause (3) Are the connection of the primary side and the secondary side of the power transformer inserted into the P.C.
  • Page 67 FILE NO. SVM-04032 9-6-2. Only indoor fan motor does not operate. Shut off the power supply once. Turn the power supply. Does the fan stop in Control P.C. board is defective. Replace the P.C. board. no operating status? Start the operation with low fan setting in cool operation.
  • Page 68 FILE NO. SVM-04032 9-6-3. 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- Turn on power supply. Refer to 9-6-1 Does OPERATION “Power can not be lamp blink?
  • Page 69 FILE NO. SVM-04032 <Inspection procedure> -Cooling and heating model- Turn on power supply. Refer to item “Power Does OPERATION can not be turned on”. lamp blink? Refer to 9-9 Is it possible to start “Troubleshooting for unit by remote control? Remote Control”.
  • Page 70 FILE NO. SVM-04032 Rewire or replace Are all of compressor defective cords. cords normal? Is compressor motor Compressor is Replace compressor. winding normal? defective. (Check winding resistor.) Capacitor is Is capacitor for Replace capacitor. defective. compressor normal? Overload relay is Replace overload relay.

  • Page 71: Troubleshooting For Wiring (Interconnect Cable And Serial Signal Wire)

    FILE NO. SVM-04032 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 72: Troubleshooting For P.c. Board

    FILE NO. SVM-04032 9-8. Troubleshooting for P.C. Board <Inspection procedure> (1) If the P.C. board is detective, check for 9-8-1. How to check indoor P.C. board disconnection, burn or discoloration of the copper <Cautions for handling P.C. board> foil pattern of the P.C. board. (2) The P.C.
  • Page 73 FILE NO. SVM-04032 Procedure Check points Causes If the above condition (No. 6) still 1. Check whether or not the 1. The temperature of the indoor continues, start the unit in the compressor operates. heat exchanger is extremely high. following condition. 2.
  • Page 74 FILE NO. SVM-04032 9-8-3. How to check outdoor P.C. board When the check code is detected on the outdoor unit, the following lamps are indicated on the LED display and the Dip switch (DSW01). Table 9-8-3 LED display and check code switch 1 Red 2 Yellow...
  • Page 75 FILE NO. SVM-04032 9-8-4. P.C. board layout Top View Bottom View – 73 –...

  • Page 76: Troubleshooting For Remote Control

    FILE NO. SVM-04032 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 77: Parts Replacement

    FILE NO. SVM-04032 10. PARTS REPLACEMENT 10-1. Indoor Unit Part name Procedures Remarks Air Inlet grille <How to remove the Air inlet grille> 1) Stop the operation of the Air conditioner and turn off its main power supply. 2) Open the Air inlet grille with both hands. Air inlet grille 3) Unfasten 3 screws (about two to three rounds) for fixing the Panel arms.
  • Page 78 FILE NO. SVM-04032 Part name Procedures Remarks Front panel <How to remove the Front panel> 1) Remove the Air inlet grille. (1) 2) In case of the Drain hose is installed through the Front panel. : Remove the Drain band from the Front panel.
  • Page 79 FILE NO. SVM-04032 Part name Procedures Remarks Front panel 6) Remove both side hooks and remove the Hook Front panel by turn to air inlet part direction. <How to install the Front panel> 1) In case of the Drain hose installation through the Front panel, install the opening base for piping in the Back body by a screw (M4 x 12).
  • Page 80 FILE NO. SVM-04032 Part name Procedures Remarks Drain pan Screw 7) Remove 7 screws and remove the Drain assembly pan assembly. Drain Pan Screw Electrical parts <How to remove the Electrical parts assembly> assembly 1) Remove the Air inlet grille, the Front panel and the Drain pan assembly.
  • Page 81 FILE NO. SVM-04032 Part name Procedures Remarks Refrigeration Earth wire TC sensor <How to remove the Refrigeration assembly> Pipe holder assembly 1) Remove the Air inlet grille, the Front panel and the Drain pan assembly. (1, 2, 3) 2) Stop the gas at the Outdoor unit. 3) Remove 2 pipes from the Refrigeration assembly.
  • Page 82 FILE NO. SVM-04032 10-2 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 83: Outdoor Unit (Ras-18Ua-E3, Ras-18Uax3, Ras-18Ua-Ar)

    FILE NO. SVM-04032 10-3 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 84: Outdoor Unit (Ras-24Uah-E3, Ras-24Ua-E3, Ras-24Uax3, Ras-24Ua-Ar)

    FILE NO. SVM-04032 10-4. 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 85: Exploded Views And Parts List

    43T69311 used for these models: RAS-24UFHP-E3, RAS-24UFHP-E3, RAS-24UFHP-ES3 43T69312 used for these models: RAS-24UFP-E3, RAS-24UFPX-E3, RAS-24UFP-AR3, RAS-24UFPX3-T, RAS-24UFP-ES3, RAS-24UFP-E3, RAS-18UFPX3-T2 43T69313 used for these models: RAS-18UFHP-E3, RAS-18UFHP-E3, RAS-18UFHP-ES3 43T69314 used for these models: RAS-18UFP-E3, RAS-18UFPX3, RAS-18UFP-AR3, RAS-18UFP-ES3, RAS-18UFP-E3 – 83 –...
  • Page 86 FILE NO. SVM-04032 11-2. Indoor Unit Location Part Location Part Description Description 43T09312 Air Inlet Grille 43T09314 Vertical Louver 43T00357 Panel Arm Assy 43T49303 Pipe Holder 43T00358 Front Panel Assy (Heating) 43T19304 Cover Body L 43T00361 Front Panel Assy (Cooling) 43T19305 Cover Body R 43T01004 Mark 43T19306 Cover Body LD...
  • Page 87 FILE NO. SVM-04032 11-3. 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 88 FILE NO. SVM-04032 11-5. 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 89 FILE NO. SVM-04032 11-6. 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 90 FILE NO. SVM-04032 11-7. 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 91 FILE NO. SVM-04032 11-8. 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 92 FILE NO. SVM-04032 11-9. 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 93 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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