Toshiba RAS-M10UKCV-E Service Manual
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Toshiba RAS-M10UKCV-E Service Manual

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FILE NO. SVM-03016

SERVICE MANUAL

AIR-CONDITIONER
SPLIT TYPE
RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E/
RAS-3M23YACV-E
R410A
June, 2003

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Summary of Contents for Toshiba RAS-M10UKCV-E

  • Page 1: Service Manual

    FILE NO. SVM-03016 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E/ RAS-3M23YACV-E R410A June, 2003...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ......................3 2. REFRIGERANT R410A....................7 3. CONSTRUCTION VIEWS ....................15 4. WIRING DIAGRAM ....................... 17 5. SPECIFICATIONS OF ELECTRICAL PARTS .............. 19 6. REFRIGERANT CYCLE DIAGRAM ................20 7. CONTROL BLOCK DIAGRAM ..................22 8. OPERATION DESCRIPTION ..................24 9.

  • Page 3: Specifications

    1. SPECIFICATIONS 1-1. Specifications Unit model Indoor RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E Outdoor RAS-3M23YACV-E Cooling capacity (kW) Cooling capacity range (kW) Power supply 220–240V–1Ph–50Hz Electric 220V 230V 240V characteristics Indoor Unit model RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E Running current 0,15 Power consumption Power factor...
  • Page 4 (2,2 to 7,0) (420 to 2300) (2,50 to 10,09) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB=35°C. • Indoor unit 10 : RAS-M10UKCV-E, 13 : RAS-M13UKCV-E, 16 : RAS-M16UKCV-E – 4 –...

  • Page 5: Operation Characteristic Curve

    1-2-1. Operation Characteristic Curve • Conditions 220V Indoor : DB27˚C/WB19˚C Outdoor : DB35˚C Air flow : High Pipe length 5m × 3 3 units operating 230V 240V Inverter output frequency (rps) 1-2-2. Capacity Variation Ratio According to Temperature • Conditions Current Limited Start Indoor : DB27˚C...

  • Page 6: Electrical Data

    8,48 8,48 0,15 x 3 = 0,45 NOTE : Model of Indoor unit 10 : RAS-M10UKCV-E, 13 : RAS-M13UKCV-E, 16 : RAS-M16UKCV-E : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)

  • Page 7: Refrigerant R410A

    2. REFRIGERANT R410A (5) After completion of installation work, check to This air conditioner adopts the new refrigerant HFC make sure that there is no refrigeration gas (R410A) which does not damage the ozone layer. leakage. The working pressure of the new refrigerant R410A If the refrigerant gas leaks into the room, coming is 1,6 times higher than conventional refrigerant into contact with fire in the fan-driven heater,...
  • Page 8 Table 2-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A 6,35 0,80 0,80 9,52 0,80 0,80 12,70 0,80 0,80 15,88 1,00 1,00 (2) Joints b) Socket Joints For copper pipes, flare joints or socket joints are Socket joints are such that they are brazed used.
  • Page 9 c) Insertion of Flare Nut Flare processing dimensions differ according to the type of flare tool. When using a con- d) Flare Processing ventional flare tool, be sure to secure “dimen- Make certain that a clamp bar and copper sion A” by using a gauge for size adjustment. pipe have been cleaned.
  • Page 10 Table 2-2-6 Flare and flare nut dimensions for R22 Dimension (mm) Flare nut Nominal Outer diameter Thickness width diameter (mm) (mm) (mm) 6,35 9,52 13,0 13,5 12,70 16,2 16,0 12,9 15,88 19,4 19,0 16,0 19,05 23,3 24,0 19,2 Fig. 2-2-2 Relations between flare nut and flare seal surface (2) Flare Connecting Procedures and Precautions When it is strong, the flare nut may crack and may be made non-removable.
  • Page 11 2-3. Tools 2-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12,7 copper pipe) of the refrigerant piping are lengthened.

  • Page 12: Recharging Of Refrigerant

    2-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. When the compound gauge’s pointer has indicated –0,1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s Connect the charge hose to packed valve service...

  • Page 13: Brazing Of Pipes

     Be sure to make setting so that liquid can be charged. ‚ When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.
  • Page 14 (2) Characteristics required for flux 2-5-3. Brazing • Activated temperature of flux coincides with As brazing work requires sophisticated techniques, the brazing temperature. experiences based upon a theoretical knowledge, it • Due to a wide effective temperature range, must be performed by a person qualified. flux is hard to carbonize.

  • Page 15: Construction Views

    3. CONSTRUCTION VIEWS 3-1. Indoor Unit RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E Front panel Air filter Air inlet Heat exchanger Back body Air outlet Knock out system Knock out system Hanger Connecting pipe (0.43m) Drain hose (0.54m) (Flare ∅6.35) Hanger Connecting pipe (0.33m) (For 10,13 series ;...

  • Page 16: Outdoor Unit

    3-2. Outdoor Unit A leg part ø11 × 17U-shape hole RAS-3M23YACV-E (For ø8-ø10 anchor bolt) 8-ø6 hole (For fixing outdoor unit) ø11 × 17 long hole B leg part (For ø8-ø10 anchor bolt) guard 115,5 Hanger Valve cover Charging port 123,8 68,5 Connecting pipe port...

  • Page 17: Wiring Diagram

    4. WIRING DIAGRAM 4-1. Indoor Unit RAS-M10UKCV-E RAS-M13UKCV-E RAS-M16UKCV-E Table 4-1-1 Simple check points for diagnosing faults Color Identification Check items Diagnosis result BRW : BROWN OPERATION Check to see if the OPERATION indicator goes on and off when the main switch...
  • Page 18 4-2. Outdoor Unit RAS-3M23YACV-E POWER SUPPLY INDOOR INDOOR INDOOR 220–230–240V~ UNIT UNIT UNIT 50Hz ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 1 2 3 1 2 3 1 2 3 4 FAN MOTOR REACTOR REACTOR REACTOR...

  • Page 19: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Indoor Unit RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E Parts name Type Specifications Fan motor (for indoor) ICF-340-30-2 DC340V, 30W Thermo. sensor (TA-sensor) ( – ) 10kΩ at 25°C DC-DC transformer (T01) SWT-70 DC390V, Secondary DC15V, 12V, 7V Microcomputer ( –...

  • Page 20: Refrigerant Cycle Diagram

    B room exchanger Connecting pipe Cross flow fan Per 1 unit Thickness : 0,8 mm Max. : 20m Ø9,52 : Min. : 2m RAS-M10UKCV-E RAS-M13UKCV-E Total Ø12,7 : Max. : 40m RAS-M16UKCV-E Connecting pipe Thickness : 0,8 mm Ø6,35 Pressure...

  • Page 21: Operation Data

    12 to 13 High High NOTE : Model of Indoor unit 10 : RAS-M10UKCV-E, 13 : RAS-M13UKCV-E, 16 : RAS-M16UKCV-E NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent. (Thermistor themometer) (2) Connecting piping condition : 5 meters x 3 units (5m / each unit) –...

  • Page 22: Control Block Diagram

    7. CONTROL BLOCK DIAGRAM 7-1. Indoor Unit RAS-M10UKCV-E, RAS-M13UKCV-E, RAS-M16UKCV-E Indoor Unit Control Panel M.C.U. Functions Operation Heat Exchanger Sensor • Louver Control Display • 3-minute Delay at Restart for Compressor Temperature Sensor Timer Display • Motor Revolution Control Infrared Rays Signal Receiver Filter Sign •...
  • Page 23 7-2. Outdoor Unit (Inverter Assembly) – 23 –...

  • Page 24: Operation Description

    8. OPERATION DESCRIPTION 8-1. Outline of Air Conditioner Control (2) Role of outdoor unit controller Receiving the operation command signal (Serial This air conditioner is a capacity-variable type air signal) from the indoor controller, the outdoor conditioner, which uses DC motor for the indoor fan unit performs its role.
  • Page 25 (4) Contents of operation command signal (Serial 8-1-2. Current Release Control signal) from outdoor unit controller to indoor unit The outdoor main circuit control section (Inverter controller assembly) detects the input current to the outdoor The following signals are sent from the outdoor unit.
  • Page 26 (2) Swing If the [AUTO] button is pressed during running operation, vertical air flow louvers start swinging. When the [AUTO] button is pressed again, swinging stops. Table 8-1-3 RAS-M10UKCV-E RAS-M13UKCV-E RAS-M16UKCV-E Operation Remote Motor speed Air flow rate...

  • Page 27: Description Of Operation Circuit

    8-2. Description of Operation Circuit 8-2-2. Cooling Operation (The Remote Control MODE Button is • Turning [ON] the breaker flashes the operation Set to the COOL Position) lamp. • Once the setting is made, the operation mode is This is the display of power-ON (or notification of memorized in the microcomputer so that the power failure).
  • Page 28 (1) Cooling capacity control (4) Outdoor temperature release control • The cooling capacity and room temperature The outdoor temperature release is controlled by changing the current release points 1 and 1 are controlled by changing the compressor motor speed according to both the difference the above item according to temperature de- between the temperature detected by the tected by the outdoor temperature sensor.
  • Page 29 3) Control 3 (C zone) : Keep zone 5) Control 5 (E zone) : Normal down of motor speed When TD detect value is 108°C or higher, operating motor speed is not changed if When TD detect value is 115°C or higher, raising operation speed.
  • Page 30 • When the air conditioner operates in Dry 8-2-3. DRY Operation mode, the maximum compressor motor speed (The Remote Control MODE Button is is restricted. Set to the DRY Position) M10UKCV-E : Max. 22 rps • Once the setting is made, the operation mode is M13UKCV-E : Max.

  • Page 31: Temporary Operation

    8-3. Temporary Operation 8-3-1. Temporary Auto Operation • When the TEMPORARY button is pushed, the • Temporary Auto operation, existence of Auto Auto operation with set temperature fixed at 24°C Restart, and Temporary Cooling operation can be starts. Controlling is same as that of Auto opera- set by the TEMPORARY button of the indoor tion by the remote control.

  • Page 32: Auto Restart Function

    8-4. Auto Restart Function 8-4-1. How to Set the Auto Restart To set the Auto Restart function, proceed as follows: This unit is equipped with an Automatic restarting facility which allows the unit to restart and resume Access the TEMPORARY button located in the lower the set operating conditions in the event of a power right hand corner beneath the hinged front panel of supply shutdown without the use of the hand control.
  • Page 33 The system will now be required to manually restart 8-4-2. How to Cancel the Auto Restart with the remote control after the main supply is To cancel the Auto Restart function, proceed as turned off. follows: Cancellation is carried out: Repeat the setting procedure: the unit will acknowledge the instruction and beep three times.

  • Page 34: Remote Control

    8-5. Remote control Memory button (MEMO) 8-5-1. Remote control and its functions Press this button to stand by memorizing the RAS-M10UKCV, RAS-M13UKCV, RAS-M16UKCV settings. Press the button again for more than 4 seconds 1 Infrared signal emitter to memorize the setting indicated on the remote Transmits a signal to the indoor unit.
  • Page 35 8-5-2. Names and functions of indications on remote control Display All indications, except for clock time indication, are indicated by pressing the START/STOP button. 1 Transmission mark This transmission mark (,) indicates when the remote control transmits signals to the indoor unit. 2 Mode display Indicates the current operation mode.

  • Page 36: Installation Procedure

    And, make sure the equipment to be 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 will result in an electrical short.
  • Page 37 9-1-1. Installation/Servicing Tools Changes in the product and components In the case of an air condition using R-410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch) •...
  • Page 38 9-2. Indoor unit RAS-M10UKCV-E RAS-M13UKCV-E RAS-M16UKCV-E For the rear left and left piping Hook Installation plate Wall Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation. Do not allow the drain hose to get slack.
  • Page 39 Mounting the Installation Plate 9-2-2. Installation Place For installation of the indoor unit, use the paper pattern on the back. • A place which provides the spaces around the indoor unit as shown in Anchor bolt holes the above diagram. •...
  • Page 40 9-2-6 Piping and Drain Hose Installation CAUTION Piping and Drain Hose Forming • This appliance can be connected to the mains in either of the following two ways. * Since dewing results in a machine trouble, make sure to insulate both (1) Connection to fixed wiring : the connecting pipes.
  • Page 41 9-2-6 Indoor Unit Fixing In case of right or left piping • After scribing slits of the front panel 1. Pass the pipe through the hole in the wall, and hook the indoor unit on the installation plate at the upper hooks. with a knife or a making-off pin, cut 2.
  • Page 42 9-2-8. Setting of Remote Controller Selector (1) Stop the operation of the air conditioner and turn turn off its main power supply. Switch (2) Pull the air inlet grille toward you to open it and When two indoor units are installed in the remove the air inlet grille.
  • Page 43 2. Setting of remote controller selector at the 9-2-9. Check and Test Operation remote controller side ¨ 1. Check the unit is firmly hooked up on the installation plate. [B] of the remote controller is displayed with ¨ 2. Check the connecting pipes tightened liquid crystal only when it is set to [B].
  • Page 44 9-3. Outdoor Unit CAUTION 1. Install the outdoor unit without anything 9-3-1. Accessory and Installation Parts blocking the air discharging. 2. When the outdoor unit is installed in a place exposed always to a strong wind like a coast or on a high story of a building, secure the normal fan operation using a duct or a wind shield.
  • Page 45 9-3-6. Refrigerant Piping Connection • Flaring size : A (Unit : mm) - 0.4 Outer dia. of copper pipe CAUTION R410A 6.35 KEEP IMPORTANT 4 POINTS FOR PIPING 9.52 13.2 13.0 WORK 12.7 16.6 16.2 1. Take away dust and moisture. In the case of flaring for R410A with the conven- (Inside of the connecting pipes) tional flare tool, pull out it approx.
  • Page 46 1. Piping connections to the outdoor unit should be Tightening connection arranged in the sequence A, B, C starting from Align the centers of the connecting pipes and tighten the bottom. the flare nut as far as possible with your fingers. (For each piping connection, the gas pipe is on Then tighten the nut with a spanner and torque the bottom and the liquid pipe is on the top.)
  • Page 47 9-3-8. Evacuating Packed valve handling precautions After the piping has been connected to all indoor • Open the valve stem all the way out ; do not try to unit(s), you can perform the air purge together at open it beyond the stopper. once.
  • Page 48 Three room (A + B + C) Multi 9-3-10. Check and Test Operation Terminal block For R410A, use the leak detector exclusively (Connecting cable) manufactured for HFC refrigerant (R410A, R134a, etc.). The conventional leak detector for HCFC refriger- ant (R22, etc.) cannot be used because its sensi- tivity for HFC refrigerant lowers to approx.
  • Page 49 9-3-12. Miswiring (Mispiping) Check 9-3-11. Useful Functions Make sure that the wiring and piping for each room Self-Diagnosis by LED Indication have the same alphabetical codes (A, B, C). Connect and secure the power cord. • For this outdoor unit, the self-diagnonsis is possible Use the power cord/cables with thickness, type and by using five LEDs (Red).

  • Page 50: How To Diagnose The Trouble

    10. HOW TO DIAGNOSE THE TROUBLE The pulse modulating circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.) Table 11-1 Troubleshooting Procedure Page...

  • Page 51: First Confirmation

    10-1. First Confirmation 10-1-3. Operation Which is not a Trouble (Program Operation) 10-1-1. Confirmation of Power Supply For controlling the air conditioner, the program Confirm that the power breaker operates (ON) nor- operations are built in the microcomputer as de- mally.
  • Page 52 10-3. Judgment by Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section. Table 10-3-1 Lamps Self-diagnosis OPERATION lamp is blinking.
  • Page 53 10-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to H in Table 11-3-1, 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 with the check codes.
  • Page 54 10-4-2. Operation Control by Rated Frequency in Service Mode In the service mode, pushing “ON” or “OFF” operates the air conditioner by rated frequency of COOL mode for 30 minutes. 10-4-3. Caution at Servicing (1) After servicing, push the START/STOP button to return to the normal mode. (2) After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.
  • Page 55 Block distinction Operation of diagnosis function Check Check Judgment and action Block Cause of operation conditioner Remarkes code code status Inverter over-current All off Displayed when Outdoor P.C. Even if trying operation again, all board protective circuit operates. error is detected. operations stop immediately.

  • Page 56: Judgement Of Trouble By Every Symptom

    10-5. Judgement of Trouble by Every Symptom 10-5-1. Indoor unit (Including remote controller) (1) Power is not turned on (Does not operate entirely) Turn off power Operation supply once, and 5 second later, turn it Check item on again. Conceivable principle cause Is OPERATION lamp blinking?
  • Page 57 (2) Power is not turned on though Indoor P.C. board is replaced <Confirmation procedure> Turn on power supply. Is wired correctly to white and black Correct wiring. Does operation lamp flash? lead wires of terminal board? To item of “Power is not turned on”. –...
  • Page 58 (3) Only indoor fan motor does not operate. <Preliminary check> 1 Is it possible to detect the power supply voltage (200 – 240V) 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 Operation approximately 5 minutes after it is turned on, to prevent a cold air...
  • Page 59 (4) Indoor fan motor starts rotating by turning on power supply alone <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 60 (5) How to examine whether remote controller is good or bad • Does setting (A/B) of the remote controller selection match with that indoor unit? Operation Check Items There is no beep from Press the START/STOP button. the indoor unit. Considerable main cause The operation lamp of the air conditioner main...
  • Page 61 10-5-2. Wiring Failure (Interconnecting and Serial Signal Wire) (1) Outdoor unit does not operate 1) Is the voltage between of the indoor terminal block varied? Confirm that transmission from indoor to outdoor is correctly performed based upon the following dia- gram.
  • Page 62 10-6. Trouble Diagnosis by Outdoor LED Wiring port For the outdoor unit, the self-diagnosis is possible by five LEDs (Red). • LEDs (Red) (D11 to D15) are provided on the sub-control board under surface of the inverter, and as shown below, they are checked from the wiring port when removing the wiring cover.

  • Page 63: How To Diagnose Trouble In Outdoor Unit

    10-7. How to Diagnose Trouble in Outdoor Unit 10-7-1. Summarized Inner Diagnosis of Inverter Assembly Diagnosis/Process flowchart Item Contents Summary Preparation Turn “OFF” the power breaker, and remove 3P connector Remove connector of which connects inverter and compressor. compressor. If fuse was blown, be sure to Check •...
  • Page 64 Diagnosis/Process flowchart Item Contents Summary Check Check winding resistance between phases of compres- sor, and resistance between outdoor frames by using a tester. → → → → → OK if 10MΩ or more • Is not grounded. Check  • Is not short-circuited winding of →...
  • Page 65 (3) Check procedures Table 10-8-1 Procedure Check point (Symptom) Causes Shut off the power supply and 1. Is the fuse blown? 1. * Application of shock voltage. remove the P.C. board assembly * Overload by short-circuit of the from the electronic parts base. parts.
  • Page 66 10-8-2. P.C. Board Layout <Top View> <Bottom View> – 66 –...
  • Page 67 <Sensor characteristic table> TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TA, TC, TO, TGa, TGb, TGc, TGd TO : Outdoor temp. sensor TGa : Gas side temp. sensor TGb : Gas side temp. sensor TGc : Gas side temp.
  • Page 68 10-8-3. Indoor Unit (Other Parts) Part name Checking procedure Room temp. (TA) sensor Disconnect the connector and measure the resistance value with tester. Heat exchanger (TC) sensor (Normal temp.) Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC (kΩ) 20,7 12,6 10,0 Remote control...
  • Page 69 10-8-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For raising pressure, 2. Discharge all four capacitors completely. smoothing) 3. Check that safety valve at the bottom of capacitor is not broken. 4.

  • Page 70: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    10-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 1. Symptom • Outdoor fan motor does not rotate. • Outdoor fan motor stops within several tens seconds though it started rotating. • Outdoor fan motor rotates or does not rotate according to the position where the fan stopped., etc. Remote control check code “02 : Outdoor block, 1A : Outdoor fan drive system error”...

  • Page 71: How To Replace The Main Parts

    11. HOW TO REPLACE THE MAIN PARTS 11-1. Indoor Unit Part name Procedures Remarks Front panel How to remove the front panel 1) Stop operation of the air conditioner and turn off its main power supply. 2) Pull the air inlet grille toward you to open it and remove the air inlet grille.
  • Page 72 Part name Procedures Remarks Heat exchanger 1) Remove the front panel, electrical part and the horizontal louver following procedure 3. 2) Remove the pipe holder at the rear side of main unit. 3) Remove the 2 screws on the heat exchanger at the base bearing.
  • Page 73 11-2. Microcomputer Part name Procedure Remarks Common 1) Turn the power supply off to stop the operation of air- Replace the thermal fuse, terminal procedure conditioner. block, microcomputer ass’y and the P.C. board ass’y. 2) Remove the front panel. • Remove the two fixing screws. (φ4 x 14l) 3) Remove the electrical part base.
  • Page 74 11-3. Outdoor Unit Part name Procedure Remarks  Common 1. Detachment Upper cabinet 1) Stop operation of the air conditioner, and remove procedure the power plug of the indoor unit from plug socket. 2) Remove the valve cover. (ST1TØ4 x 10l l l l l 1 pc.) Wiring cover •...
  • Page 75 Part name Procedure Remarks ƒ Inverter 1. Detachment Inverter cover  ‚ P . C. board assembly 1) Perform work of items 1. of (Soldered surface) 2) Remove screw (ST1TØ4 x 10l l l l l 1 pc.) of the upper part of the front cabinet.
  • Page 76 No. Part name Procedure Remarks Control 1) Disconnect lead wires and connectors connected Main board board from the control board assembly to other parts. 1. Lead wires assembly • Connection with terminal block : 10 wires (Black, Orange, Pink, Red, Two white wires, CN301 CN06 CN07 CN300...
  • Page 77 Part name Procedure Remarks Fan motor 1) Perform work of item 1 of 2) Remove the flange nut fixing the fan motor and Fan motor the propeller fan. • Flange nut is loosened by turning clockwise. Propeller fan (To tighten the flange nut, turn counterclock- wise.) 3) Remove the propeller fan.
  • Page 78 Part name Procedure Remarks ‰ Pulse 1. Detachment  ‚ ƒ … modulating 1) Perform work of item 1 of , and valve coil 2) Turn the coil clockwise or counterclockwise by 90 degrees, and remove coil from the pulse modulating valve.
  • Page 79 Part name Procedure Remarks Replacement 1) Cut the sensor 100 mm longer than old one. of temperature 2) Cut the protective tube after pulling out it sensor for (200 mm). Cutting here Thermal servicing only 3) Move the protective tube toward the thermal Connector sensor part sensor side and tear the tip of lead wire in...
  • Page 80 MCC-758 CN600 – 80 –...
  • Page 81 MCC-775 – 81 –...

  • Page 82: Exploded Views And Parts List

    Location Part No. Location Description Part No. Description 43T69319 Temperature Sensor 43T69333 P .C. Board Ass’y, MCC-867(RAS-M10UKCV-E) TC, 10kΩ, 25°C 43T60002 Terminal Block, 3P , 43T69334 P .C. Board Ass’y, AC 300V, 20A MCC-867(RAS-M13UKCV-E) 43T69320 Temperature Sensor 43T69335 P .C. Board Ass’y, MCC-867(RAS-M16UKCV-E) TC, 10kΩ, 25°C...
  • Page 83 43T01303 Mark Cap Drain 43T79301 43T21321 Motor Louver Refrigeration Cycle Assy 43T47006 Pipe Delivery Pipe Suction 43T47305 (RAS-M10UKCV-E,M13UKCV-E) Pipe Suction 43T47016 (RAS-M16UKCV-E) 43T11301 Pipe Shield 43T19302 Holder Sensor 43T49302 Plate of EVA Seal 43T49006 Holder Plate EVA Seal 43T79302 Guide Drain...
  • Page 84 12-2. Outdoor Unit 12,15 11,14 13,16 24, 25 Location Part Location Part Description Description 43005452 Cabinet, Back, Assembly 43046351 Valve, Pulse Modulating (P.M.V.), SEV15RC2 43005369 Cabinet, Upper, Assembly 43046347 Coil, P.M.V. 43005364 Cabinet, Front, Assembly 43058264 Reactor, CH38Z-K 4301V030 Guard, Fan 43050298 Thermo.
  • Page 85 12-3. P.C. Board Layout TO Sensor TGa Sensor TGb Sensor TGc Sensor TD Sensor Location Part Location Part Description Description 43050382 Sensor, TC (Ø6) 43062231 Base, P.C. Board 43050334 Sensor, TD (Ø4) 43063308 Heatsink 43060052 Fuse, 25A, 250V, Lead Type 4306S191 P.C.
  • Page 86 TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

This manual is also suitable for:

Ras-m13ukcv-eRas-m16ukcv-eRas-3m23yacv-e

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