Toshiba RAS-M05G3KVSG-E Service Manual
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Toshiba RAS-M05G3KVSG-E Service Manual

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FILE NO. SVM-22103
SERVICE MANUAL
SPLIT TYPE
RAS-M05G3KVSG-E
RAS-M05G3KVSGB-E
R32
November, 2022

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Summary of Contents for Toshiba RAS-M05G3KVSG-E

  • Page 1 FILE NO. SVM-22103 SERVICE MANUAL SPLIT TYPE RAS-M05G3KVSG-E RAS-M05G3KVSGB-E November, 2022...

  • Page 2: Table Of Contents

    CONTENTS 1. SAFETY PRECAUTIONS ................3 2. SPECIFICATIONS ..................6 3. REFRIGERANT R32 ...................7 4. CONSTRUCTION VIEWS ................ 15 5. WIRING DIAGRAM .................. 16 6. SPECIFICATIONS OF ELECTRICAL PARTS ......... 17 7. REFRIGERANT CYCLE DIAGRAM ............18 8. CONTROL BLOCK DIAGRAM ..............19 9.

  • Page 3: Safety Precautions

    1. SAFETY PRECAUTIONS Read the precautions in this manual This appliance is fi lled with R32. carefully before operating the unit. (Flammable Material) Information included in the Operation Service personnel should be handing this equipment Manual and/or Installation Manual. with reference to the Installation Manual. Warning Indications on the Air Conditioner Unit Warning indication Description...
  • Page 4 DANGER • ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO IN- STALL/MAINTAIN THE AIR CONDITIONER. INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE. • TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES ARE OFF.
  • Page 5 A special tool for the R32 or R410A refrigerant is required for installation. • • Thickness of copper pipes used R32 must be more than 0.8 mm. Never use copper pipes thinner than 0.8 • After completion of installation or service, confi rm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.

  • Page 6: Specifications

    Outdoor (Cooling / Heating) Installation plate Accessory Indoor unit Wireless remote controller Batteries Remote controller holder Toshiba Ultra pure filter Mounting screw 6(  4x25L) Remote controller holder 2(  3.1x16L) Flat head wood screw Installation manual Owner's manual *1 : Refer to the service manual of the multi outdoor unit to be combined.

  • Page 7: Refrigerant R32

    3. REFRIGERANT R32 3. If a refrigeration gas leakage occurs during This air conditioner adopts the new refrigerant HFC (R32) which does not damage the ozone layer. installation/servicing, be sure to ventilate fully. If the refrigerant gas comes into contact with fire, a The next section describes the precautions for air conditioner using the new refrigerant.
  • Page 8 Table 3-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R32(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 For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm.
  • Page 9 d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. ØD By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R32 or conven- tional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 10 Table 3-2-6 Flare and flare nut dimensions for R22 Dimension (mm) Nominal Outer diameter Thickness Flare nut width diameter (mm) (mm) (mm) 6.35 9.52 13.0 13.5 12.70 16.2 16.0 12.9 15.88 19.7 19.0 16.0 19.05 23.3 24.0 19.2 Fig. 3-2-2 Relations between flare nut and flare seal surface 2.
  • Page 11 3-3. Tools 3-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R32 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 3-4. 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 power switch.
  • Page 13 1. Be sure to make setting so that liquid can be charged. 2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. 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 3-5-3. Brazing • Activated temperature of flux coincides with the As brazing work requires sophisticated techniques, brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. • Due to a wide effective temperature range, flux is hard to carbonize.

  • Page 15: Construction Views

    4. CONSTRUCTION VIEWS 4-1. Indoor Unit Air filter Air filter Front panel Grille inlet Air outlet Wireless adapter Heat exchanger Knock out system Wireless remote controller 66.5 50 55 66.5 Installation plate hanger 24 97 Drain hose (0.4m) Installation plate hanger Installation plate hanger Connecting pipe (0.35m) Connecting pipe (0.40m)

  • Page 16: Wiring Diagram

    5. WIRING DIAGRAM - 16 -...

  • Page 17: Specifications Of Electrical Parts

    6. SPECIFICATIONS OF ELECTRICAL PARTS 6-1. Indoor Unit Parts name Type Specification RPG-240-25B AC 220~240V, 25W Fan Motor (for indoor) Room temp. sensor (TA-sensor) 10kΩ at 25°C Heat exchanger temp. sensor (TC-sensor) 10kΩ at 25°C Heat exchanger temp. sensor (TCJ-sensor) 10kΩ...

  • Page 18: Refrigerant Cycle Diagram

    Outer dia. : 6.35mm Thickness : 0.8mm Sectional shape of heat insulator To outdoor unit To outdoor unit Dimension table Outer diameter of refrigerant pipe (mm) Indoor unit   Gas side Liquid side RAS-M05G3KVSG-E 9.52 6.35 RAS-M05G3KVSGB-E - 18 -...

  • Page 19: Control Block Diagram

    8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit Indoor Unit Control Panel M.C.U Operation Display Functions Heat Exchanger Sensor • Louver Control Timer • 3-minute Delay at Restart for Compressor Display Temperature Sensor Hi-POWER • Motor Revolution Control Display • Processing Infrared Rays Signal Receiver (Temperature Processing) Display...

  • Page 20: Operation Description

    9. OPERATION DESCRIPTION 9-1. Outline of Air Conditioner Control • Detection of inverter input current and current release operation This air conditioner is a capacity-variable type air conditioner. Its system can control the speed of • Over-current detection and prevention operation to compressor motor according to load.
  • Page 21 9-2. Operation Description 1. Basic operation ...................... 1. Operation control ....................2. Cooling/Heating operation ................3. AUTO operation ....................4. DRY operation ....................2. Indoor fan motor control ..................3. Capacity control ..................... 4. Release protective control by temperature of indoor heat exchanger ....5.

  • Page 22: Basic Operation

    Item Operation flow and applicable data, etc. Description 1. Basic 1. Operation control operation Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are controlled. 1) The operation conditions are selected by the remote controller as shown in the below. 2) A signal is sent by ON button of the remote controller.

  • Page 23: Cooling/Heating Operation

    Item Operation flow and applicable data, etc. Description 1. Basic 2. Cooling/Heating operation operation The operations are performed in the following parts by controls according to cooling/heating conditions. 1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal starts being transferred form the indoor controller to the outdoor unit.

  • Page 24: Indoor Fan Motor Control

    Item Operation flow and applicable data, etc. Description 2. Indoor fan <In cooling operation> motor control (This operation controls the fan speed at indoor unit side.) * Symbols The indoor fan (cross flow fan) is operated by the phase- : Ultra High control induction motor.

  • Page 25: Capacity Control

    Item Operation flow and applicable data, etc. Description The cooling capacity depending on the load is adjusted. 1) The difference between set 3. Capacity temperature on remote controller control According to difference between the setup value of tempera- (Ts) and room temperature (Ta) ture and the room temperature, the capacity is adjusted by is calculated.

  • Page 26: Louver Control

    Item Operation flow and applicable data, etc. Description 5. Louver control This function controls the air direction of the indoor unit. 1) Louver • The position is automatically controlled according to the operation position mode. • The set louver position is stored in memory by the microcomputer, and the louver returns to the stored position when the next operation is performed.

  • Page 27: Swing

    Item Operation flow and applicable data, etc. Description 5. Louver control 3) Swing • Swing operation is performed in range 35° with the Fixed • Swing position as the center. When pressing [SWING] button during • If the swing range exceeded either upper or lower limit position, operation, the louver swing operation is performed in range 35°...

  • Page 28: Temporary Operation

    Item Operation flow and applicable data, etc. Description 6. Temporary Pressing [RESET] button starts the temporary 1) When pressing [RESET] button, the operation operation of [AUTO] operation. When keeping temporary [AUTO] operation starts. [RESET] button pressed for 10 seconds or more, When keeping [RESET] button pressed the temporary [COOL] operation is performed.

  • Page 29: Self-Cleaning Function

    Item Operation flow and applicable data, etc. Description 8. Self-Cleaning 1. Purpose function The Self-Cleaning operation is to minimize the growth of mold, bacteria etc. by running the fan and drying so as to keep the inside of the air conditioner clean. Unit now performing cooling or dry operation Self-Cleaning operation When the cooling or dry operation shuts...
  • Page 30 Item Operation flow and applicable data, etc. Description 8. Self-Cleaning function 8-1-1. Self-Cleaning diagram Operation display FCU fan rpm is depend on presetting. (500RPM) OPEN (12.7º) FCU louver OPEN CLOSE ON or OFF ON or OFF Timer display depend on presetting of timer function. depend on presetting of timer function.

  • Page 31: Eco Operation

    Item Operation flow and applicable data, etc. Description When pressing [ECO] button on the remote controller, a 9. ECO <Cooling operation> Economic operation is performed. operation 1) The control target temperature <Cooling operation> increase 0.5ºC per hour up to 2ºC This function operates the air conditioner with the difference starting from the set temperature between the set and the room temperature as shown in the...

  • Page 32: Hi-Power Mode

    Item Operation flow and applicable data, etc. Description ([Hi-POWER] button on the remote controller 11. Hi-POWER Mode is pressed) When [Hi-POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi- POWER mark is indicated on the display of the remote controller and the unit operates as follows.

  • Page 33: Fireplace Operation

    - The compressor speed is controlled as show in noise level of indoor unit is less than usual. the figure. Remarks : RAS-M05G3KVSG-E Quiet mode is unable to work in dry mode. Model RAS-M05G3KVSGB-E Quiet mode is appropriate to work with less Cool min (Hz) cooling load and less heating load condition.

  • Page 34: Auto Restart Function

    9-3. Auto Restart Function This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with the set operating conditions in the event of a power supply being accidentally shut down. The operation will resume without warning three minutes after power is restored. This function is set to work when shipped from the factory.

  • Page 35: How To Set The Auto Restart Function

    9-3-2. How to Set the Auto Restart Function To set the auto restart function, proceed as follows: The power supply to the unit must be on ; the function will not set if the power is off. Press the [RESET] button located in the center of the front panel continuously for three seconds. The unit receives the signal and beeps three times.

  • Page 36: Parts Name Of Remote Controller

    9-4. Remote control 9-4-1. Parts Name of Remote Controller 1 Infrared signal emitter 2 Start/Stop button 3 Mode select button 4 Temperature button 5 Fan speed button 6 Menu select button 7 Set louver Up-Down button 8 Set louver Left-Right button 9 Check button* *Check button under battery cover MODE...
  • Page 37 Louver Swing and HADA Care Flow Operation Setting 5. MENU SETUP For select more setting of Air conditioner such as Louver select 1. Press MENU button for enter menu selection Hi Power, OFF Timer and other use MENU button. MENU During triangle mark blink can select menu by press TEMP. button. 2. Enter Louver set by press MENU button again. triangle mark will stop blink and setting feature will be blink instead. Blink 3. Select Louver swing or HADA CARE FLOW by press TEMP. button. Vertical Swing MODE (Up-Down)
  • Page 38 Hi-P SILENT OPERATION (Outdoor Unit) Hi POWER OPERATION To automatically control room temperature and airflow for faster cooling or Keep outdoor unit operating silently to ensure either yourself or neighborhood heating operation (except in DRY and FAN ONLY mode) will have a tight sleep in nighttime. By this feature, the heating capacity will be optimized to deliver such silent experience.
  • Page 39 FIREPLACE OPERATION TIMER OFF OPERATION Keep indoor unit’s fan blowing continuously during thermo off, to circulate To set the timer OFF when the air conditioner is operating. heat from other sources over the room. There are three setting parameters: 1. Press MENU button for enter menu setting and press TEMP. button to Default setting >...
  • Page 40 6. MANUAL DEFORST OPERATION POWER-SELECTION OPERATION To defrosting the heat exchanger of the outdoor unit during Heating operation This function is used when the circuit breaker is shared with other electrical Press and hold : for 5 seconds , then remote control display will appliances.
  • Page 41 Android : Version 5.0 or later. About Toshiba Home AC Control 1. Toshiba Home AC Control can control AC operation by Smartphone or tablet (mobile device) via internet connection. 2. Everywhere control, control software run on Cloud system and mobile device can set and monitor AC operation via internet connection.
  • Page 42 Open application and select Log in. Enter user name and Login successful. password. Add Wireless adapter for control by Toshiba Home AC Control application. Wireless adapter Built-in Active Wireless adapter by remote controller and Auto login. Select “Add AC (Adapter)” from both display above.
  • Page 43 Add Wireless adapter for control by Toshiba Home AC Control application. AC (adapter) connect Active Wireless adapter by Remote controller Press and hold MODE button 5 seconds Wireless LED mark will blink when AP mode active MODE MENU WPS mode...
  • Page 44 Toshiba Home AC Control application Home screen Weekly schedule Setting Menu Add AC Sub menu all AC All AC On/Off · Add Group · Delete Group Group AC On/Off · Operation Setting Each AC On/Off Sub menu group · Select AC ·...
  • Page 45 Mode and Condition setting. Enter operation mode of All AC Enter operation mode of Group AC Enter operation mode of each AC Mode select for Toshiba Home AC Control application. Provide for 5 operation modes Auto Cool Heat Fan only...
  • Page 46 Setting in operation mode. Tab for select AC Weekly schedule OFF-ON timer set 0.5-12hrs. Mode select OFF-ON Timer set Temperature set Indoor temperature Outdoor temperature ON timer set from Off mode only Fan speed set Louver set Special feature Off mode - 46 -...
  • Page 47 Group operation. Maximum 3 groups 1 Group maximum = 10 units. Add group Add AC in group Delete AC in group Please make sure Factory Reset is performed before deleting AC from mobile application. (See owner manual ʺPress and hold MODE button on remote control for 5 second and active dL functionʺ) - 47 -...
  • Page 48 Weekly schedule set. Day select Monday - Sunday Weekly schedule of all AC unit Weekly schedule of all AC unit Time select Weekly schedule set for each unit Mode select Select program for active by tick at select box Weekly schedule cancel. Weekly schedule not set Weekly schedule...
  • Page 49 Energy monitoring Select Room for Energy monitoring Select Energy monitoring Energy monitoring display Set cost calculate and currency Select Energy monitoring display Export data and send by Email ● The power consumption displayed is just an estimate as it is calculated simply. It may sometimes differ from the result measured by the power meter.
  • Page 50 In case of have some problem can check from Help menu. Note : ‘‘ The Wireless Adapter must be installed, maintained, repaired and removed by a qualified installer or qualified service person.” ‘‘Contact dealer and/or service center when equipment is malfunction.” - 50 -...

  • Page 51: Name And Functions Of Indications On Remote Controller

    9-4-3. Name and Functions of Indications on Remote Controller [Display] All indications, except for the clock time indicator, are displayed by pressing the button. Transmission mark Hi-POWER indicator Indicates when the Hi-POWER operation starts. This transmission mark indicates when the remote controller transmits signals to the indoor unit.

  • Page 52: Installation Procedure

    10. INSTALLATION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units For the rear left, bottom left and left piping Wall Hook Installation plate Cut out a piece of SPACER from indoor unit packaging box, roll it and insert between the indoor unit and wall to tilt the indoor unit for better operation.
  • Page 53 Installation plate × 1 Wireless remote control × 1 Battery × 2 Remote control holder × 1 Toshiba Ultra pure fi lter × 2 Mounting screw × 6 Flat head wood screw × 2 Owner’s Manual × 1 B Label × 1 Installation Manual ×...
  • Page 54 10-2-3. Installation/Servicing Tools Changes in the product and components In the case of an air conditioner using R32, 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 55 10-3. Indoor Unit 10-3-2. Cutting a hole and mounting installation 10-3-1. Installation place <Cutting a hole> • A place which provides the spaces around the indoor When installing the refrigerant pipes from the rear. unit as shown in the diagram •...
  • Page 56 NOTE: CAUTION • Secure four corners and lower parts of the • If have curtain rails, window cornice or other installation plate with 4 to 6 mounting screws to objects, allow space from the indoor unit install it. should be 65 mm or more. •...
  • Page 57 <How to remove the drain hose> 10-3-4. Piping and drain hose installation • <Piping and Drain Hose Forming> The drain hose can be removed by removing the screw securing the drain hose and then pulling out * Since dewing results in a machine trouble, make the drain hose.
  • Page 58 <In case of right or left piping> NOTE • After scribing slits of the front panel with a knife or a If the pipe is bent incorrectly, the indoor unit may making-off pin, cut them with a pair of nippers or an unstably be set on the wall.
  • Page 59 10-3-5. Indoor unit fixing 10-3-6. 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 2. Swing the indoor unit to right and left to confirm that •...
  • Page 60 10-3. Others 10-3-1 . Gas leak test Check places for indoor unit (Flarenut connection) F ig. 10-3-2 10-3-3. Adhesion of B label (When setting to B) Be sure to adhere the B label on the cover terminal same as the below figure. Check places for outdoor unit F ig.

  • Page 61: How To Diagnose The Trouble

    11. HOW TO DIAGNOSE THE TROUBLE 11-1. First Confirmation 11-1-1. Confirmation of Power Supply Confirm that the power breaker operates (ON) normally. 11-1-2. Confirmation of Power Voltage Confirm that power voltage is AC 220–230–240 ± 10%. If power voltage is not in this range, the unit may not operate normally. 11-1-3.
  • Page 62 11-2. Primary Judgment To diagnose the troubles, use the following methods. 1) Judgment by flashing LED of indoor unit 2) Self-diagnosis by service check remote controller 3) Judgment of trouble by every symptom Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles. 11-3.
  • Page 63 11-4. Self-Diagnosis by Remote Controller (Check Code) 1. If the lamps are indicated as shown B to E in Table 11-4-1, execute the self-diagnosis by the remote controller. 2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condition and indicates the in formation of the self-diagnosis on the display of the remote controller with the check codes.
  • Page 64 11-4-2. Caution at Servicing 1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function. 2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air conditioner to normal operation.
  • Page 65 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never and connecting connecting cable or operates...
  • Page 66 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Outdoor Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the is over limit in short time. error is detected compressor, and operate again.
  • Page 67 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status 1. Check installation conditions such as Compressor drive output error. All OFF Flashes after Outdoor (Relation of voltage, current error is detected packed valve opening, refrigerant 8 times*.
  • Page 68 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status The others Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the (including Because of missed wiring, error is detected compressor, and operate again.
  • Page 69 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status Return signal of the outdoor Indoor unit Flashes when 1. . Check power supply (Rate +10%) The others operates error is detected unit has been sent when...
  • Page 70 11-5. Judgment of Trouble by Every Symptom 11-5-1. Indoor Unit (Including Remote Controller) (1) Power is not turned on (Does not operate entirely) <Primary check> 1. Is the supply voltage normal? 2. Is the normal voltage provided to the outdoor unit? 3.
  • Page 71 (2) Only the indoor motor fan does not operate <Primary check> 1. Is it possible to detect the power supply voltage (AC220–240V) between 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 10 minutes after it is turned on, to prevent a cold air from blowing in.) Shut off the power supply once.
  • Page 72 (For AC fan motor) <Inspection procedure> 1. Remove the front panel. (Remove 2 screws.) 2. Remove the cover of the fan motor lead wires. 3. Check AC voltage with C31 connector while the fan motor is rotating. NOTE : • Using a tester, measure the resistance value of each winding coil. •...
  • Page 73 (3) Troubleshooting for remote controller <Primary check> Check that A or B selected on the main unit is matched with A or B selected on the remote controller. There is no beep from the indoor unit Push the [ ] button. The OPERATION lamp of the air conditioner main unit does not light Does the transmission...
  • Page 74 11-6. How to Check Simply the Main Parts 11-6-1. How to Check the P.C. Board (Indoor Unit) (1) Operating precautions 1) When removing the front panel or the P .C. board, be sure to shut off the power supply breaker. 2) When removing the P .C.
  • Page 75 (3) Check procedures Table 11-6-1 Procedure Check points Causes Turn off the power supply breaker Check whether or not the fuse (F01) Impulse voltage was applied or the and remove the P.C. board is blown. indoor fan motor short-circuited. assembly from electronic parts base.
  • Page 76 11-6-2. P .C . Board Layout CN32 Stepping motor CN33 CN31 Connector Feedback Running capacitor Fan motor Fan motor Fan motor CN20 Display connector CN21 Wireless Adapter connector Fuse CN22 CN02 Power supply Input terminal CN61 (YEL) (Neutral) TA Sensor connector CN01 CN62 (BLK)
  • Page 77 11-6-3. 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,TCJ) (Normal temp.) sensor Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC, TCJ (kΩ) 20.7 12.6 10.0...

  • Page 78: How To Replace The Main Parts

    12. HOW TO REPLACE THE MAIN PARTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. • After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.
  • Page 79 Procedures Part name Remarks Wireless adapter 1) Follow procedures item 2) Remove screw holding the wireless adapter 3) Disconnect the connector for the wireless adapter Wireless adapter connector Wireless adapter Screw Cover wireless adapter Front panel 1) Stop operation of the air conditioner and turn Front panel off its main power supply.
  • Page 80 Procedures Part name Remarks Electric part 1) Follow the procedure item 3 . box assembly 2) Remove screw holding the electric part cover. Connectors TA sensor TCJ sensor Fan motor connector (AC) Earth line Screw Louver motor connector Electric part cover TC sensor 3) Disconnect the connectors for the fan motor and louver motor from P.C.
  • Page 81 Part name Procedures Remarks Fan motor 1) Follow the procedure item 3 and 4 . Cross flow fan 2) Loosen the set screw of the cross flow fan. Cross flow fan Body back 3.5 mm Fan motor Set screw 3) Remove 2 fixing screws of the motor band. 4) Pull the motor band and the fan motor Hexagon screw driver outward.
  • Page 82 Part name Procedures Remarks Drain pan 1) Follow the procedure item 3 . assembly 2) Remove screw holding the electric part cover. Connectors P.C.board Screw Louver motor Electric part cover connector 3) Disconnect the louver motor connector (5P) from P.C. board assembly. 4) Remove fixing screws of the unit display and remove unit display.
  • Page 83 Part name Procedures Remarks Vertical louver 1) Follow the procedure item 3 and 7 . Vertical assembly 2) Remove 2 fixing screws from the base vertical louver louver then remove the vertical louver Screw assembly from the body back. Screw Cross flow fan 1) Follow the procedure item 3 and 4 .
  • Page 84 Part name Procedures Remarks Heat exchanger 1) Follow the procedure in item 3 and 4 . (Evaporator) 2) Remove 2 fixing screws at the left side of the heat exchanger. Screws 3) Remove fixing screw at the upper right side of the heat exchanger.

  • Page 85: Exploded Views And Parts List

    ELECTRICAL PARTS ASSEMBLY Location Part Location Part Description Description 43T00777 FRONT PANEL ASSY 43T39441 MOTOR BAND BACK ASSY (FOR RAS-M05G3KVSG-E) 43T39369 MOTOR BAND FRONT 43T00921 FRONT PANEL ASSY 43T44668 REFRIGERATION CYCLE ASSY (FOR RAS-M05G3KVSGB-E) 43T39370 EVAPORATOR HINS SEAL 43T09585 GRILLE OF AIR INLET ASSY...
  • Page 86 13-2. Indoor Unit (Part-E) Location Part Location Part Description Description 43T50393 TEMPERATURE SENSOR 43TN9850 PC BOARD ASSY(WP-050) 43T6V695 TERMINAL(3P) 43T60606 HOUSING-WiFi 43T50413 TA-SENSOR 43T50400 TEMPERATURE SENSOR 43T62340 CORD-CLAMP 43T60607 CORD MOTOR(VT) 43T6W727 PC BOARD ASSY : WRS-LED - 86 -...
  • Page 87 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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