Toshiba RAS-10BKVG-E1 Service Manual
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Toshiba RAS-10BKVG-E1 Service Manual

Toshiba RAS-10BKVG-E1 Service Manual

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SERVICE MANUAL
Indoor Unit
RAS-10BKVG-E1
RAS-13BKVG-E1
R32
FILE NO. SVM-17031-4
SPLIT TYPE
Outdoor Unit
RAS-10BAVG-E1
RAS-13BAVG-E1
Revised on March, 2020

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Summary of Contents for Toshiba RAS-10BKVG-E1

  • Page 1 FILE NO. SVM-17031-4 SERVICE MANUAL SPLIT TYPE Outdoor Unit Indoor Unit RAS-10BKVG-E1 RAS-10BAVG-E1 RAS-13BKVG-E1 RAS-13BAVG-E1 Revised on March, 2020...

  • Page 2: Table Of Contents

    FILE NO. SVM-17031 CONTENTS 1. SAFETY PRECAUTIONS ................3 2. SPECIFICATIONS ..................6 3. REFRIGERANT R32 .................. 8 4. CONSTRUCTION VIEWS ................ 16 5. WIRING DIAGRAM .................. 18 6. SPECIFICATIONS OF ELECTRICAL PARTS ......... 19 7. REFRIGERANT CYCLE DIAGRAM ............20 8.

  • Page 3: Safety Precautions

    FILE NO. SVM-17031 1. SAFETY PRECAUTIONS Read the precautions in this manual This appliance is lled with R32. (Flammable Material) carefully before operating the unit. Information included in the Operation Service personnel should be handing this equipment Manual and/or Installation Manual. with reference to the Installation Manual.
  • Page 4 FILE NO. SVM-17031 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: For Reference

    FILE NO. SVM-17031 Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, ame, sparks, or • other sources or ignition. Else, it may explode and cause injury or death. • For R32 model, use pipes, are nut and tools which is speci ed for R32 refrigerant. Using of existing (R22) piping, are nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.

  • Page 6: Specifications

    FILE NO. SVM-17031 2. SPECIFICATIONS 2-1. Specification Unit model Indoor RAS-10BKVG-E1 RAS -13BKVG-E1 Outdoor RAS-10BAVG-E1 RAS-13BAVG-E1 2.50 3.30 Cooling capacity (kW) Cooling capacity range (kW) 0.68-3.00 0.75-3.60 3.20 Heating capacity (kW) 3.60 0.71-3.90 0.72-4.50 Heating capacity range (kW) Power supply...

  • Page 7: Operation Characteristic Curve

    FILE NO. SVM-17031 2-2. Operation Characteristic Curve <Cooling> <Heating> RAS-13BKVG-E1 RAS-13BKVG-E1 RAS-10BKVG-E1 RAS-10BKVG-E1 Conditions Conditions Indoor : DB 27 C/WB 19 Indoor : DB 20 C/WB 15 Outdoor : DB 35 C/WB 24 Outdoor : DB 7 C/WB 6 Indoor Air Flow : High...

  • Page 8: Refrigerant R32

    FILE NO. SVM-17031 3. REFRIGERANT R32 3. If a refrigeration gas leakage occurs during This air conditioner adopts the new refrigerant HFC installation/servicing, be sure to ventilate fully. (R32) which does not damage the ozone layer. If the refrigerant gas comes into contact with fire, a The next section describes the precautions for air poisonous gas may occur.

  • Page 9: Processing Of Piping Materials

    FILE NO. SVM-17031 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 10 FILE NO. SVM-17031 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 11 FILE NO. SVM-17031 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.

  • Page 12: Required Tools

    FILE NO. SVM-17031 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 13: Recharging Of Refrigerant

    FILE NO. SVM-17031 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 14: Brazing Of Pipes

    FILE NO. SVM-17031 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 15 FILE NO. SVM-17031 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. •...

  • Page 16: Construction Views

    FILE NO. SVM-17031 4. CONSTRUCTION VIEWS 4-1. Indoor Unit Air Inlet Air Filter Front Panel Grille Inlet Back Body Hert Exchanger Air Outlet Knock Out System Knock Out System 66.5 55 66.5 Installation plate hanger 17.5 Wireless remote controller 64.5 Remote controller holder Drain hose (0.4m) Installation plate hanger...
  • Page 17 FILE NO. SVM-17031 4-2. Outdoor Unit (Unit : mm) - 17 -...

  • Page 18: Wiring Diagram

    FILE NO. SVM-17031 5. WIRING DIAGRAM - 18 -...

  • Page 19: Specifications Of Electrical Parts

    FILE NO. SVM-17031 6. SPECIFICATIONS OF ELECTRICAL PARTS 6-1. Indoor Unit Parts name Type Specificat Fan Motor (for indoor) SJM-240-25 AC 220~240V, 25W Room temp. sensor (TA-sensor) 10kΩ at 25°C Heat exchanger temp. sensor (TC-sensor) 10kΩ at 25°C Louver motor 24BYJ48A-080 Output (Rated) 4 phase, DC12V 6-2.

  • Page 20: Refrigerant Cycle Diagram

    FILE NO. SVM-17031 7. REFRIGERANT CYCLE DIAGRAM 7-1. Refrigerant Cycle Diagram RAS-10BKVG-E1 / RAS-10BAVG-E1 RAS-13BKVG-E1 / RAS-13BAVG-E1 Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. : 15m Min. : 2m Pressure measurem Chargeless : 15m Deoxidized copper pipe Gauge attaching port Outer dia.

  • Page 21: Operation Data

    FILE NO. SVM-17031 7-2. Operation Data <Cooling> Tempeature Heat exchanger Model name Standard Indoor Outdoor Compressor condition(°C) pipe temp. RAS- pressure fan mode fan mode revolution Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps) High High 27/19 35/- 1.1 to 1.3 11 to 13 59 to 51 10BKVG-E1...

  • Page 22: Control Block Diagram

    FILE NO. SVM-17031 8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit 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 • Motor Revolution Control Infrared Rays Signal Receiver •...

  • Page 23: Outdoor Unit (Inverter Assembly)

    FILE NO. SVM-17031 8-2. Outdoor Unit (Inverter Assembly) - 23 -...

  • Page 24: Operation Description

    FILE NO. SVM-17031 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 • Over-current detection and prevention operation to conditioner. Its system can control the speed of compressor motor according to load.
  • Page 25 FILE NO. SVM-17031 9-2. Operation Description 1. Basic operation ......................26 1. Operation control ....................26 2. Cooling/Heating operation ..................27 3. AUTO operation ..................... 27 4. DRY operation ......................27 2. Indoor fan motor control ..................... 28 3. Outdoor fan motor control ................... 30 4.

  • Page 26: Operation Description

    FILE NO. SVM-17031 9-2. Operation Description 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 27: Cooling/Heating Operation

    FILE NO. SVM-17031 Operation flow and applicable data, etc. Description Item 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 28: Indoor Fan Motor Control

    *5 : Fan speed = (M + –L) x 1/4 + L +1.0 +0.5 (Linear approximation L(W7) from M+ and L) (Table 1) Indoor fan air flow rate Fan speed Mode RAS-10BKVG-E1 RAS-13BKVG-E1 level Cooling Heating Cooling Heating Cool Heat...
  • Page 29 FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 2. Indoor fan <In heating operation> 1) When setting the fan speed to L, motor control L+, M, M+ or H on the remote controller, the operation is per- formed with the constant speed HEAT ON shown in Fig.

  • Page 30: Outdoor Fan Motor Control

    13.8≤Hz<32.4 30.6≤Hz To < 10°C To < 5°C To≥38 °C To≥28 °C To < −3°C To≥15 °C When To is abnormal To≥5.5 °C To≥0 °C To<0 °C When To is abnormal Outdoor fan speed (rpm) RAS-10BKVG-E1 RAS-13BKVG-E1 - 30 -...

  • Page 31: Capacity Control

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 4. Capacity The cooling or heating capacity depending on the load is 1) The difference between set control adjusted. temperature on remote controller (Ts) and room temperature (Ta) According to difference between the setup value of tempera- is calculated.

  • Page 32: Release Protective Control By Temperature Of Indoor Heat Exchanger

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 6. Release protective <In cooling/dry operation> 1) When temperature of the indoor control by tempera- heat exchanger drops below 5°C, (Prevent-freezing control for indoor heat exchanger) ture of indoor heat the compressor speed is In cooling/dry operation, the sensor of indoor heat exchanger...

  • Page 33: Defrost Control (Only In Heating Operation)

    TE≤ -25°C & SH-SH0≤2 More than 90 minutes accumulate heating operation time condition TE≤ -2°C D zone Table 2 Heating operation Model RAS-10BKVG-E1 RAS-13BKVG-E1 (time) <Defrost operation> <Returning from defrost operation> • Defrost operation in A to C zones 1) Stop operation of the compressor for 1) Stop operation of the compressor for approx.

  • Page 34: Louver Control

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 8. Louver control This function controls the air direction of the indoor unit. • The position is automatically controlled according to the operation 1) Louver mode (COOL/HEAT). position • 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 35: Eco Operation

    * 10 (DRY max - COOL min) /6 x 3 + COOL min * 9 (DRY max - COOL min) /6 x 2 + COOL min * 8 (DRY max - COOL min) /6 x 1 + COOL min RAS-10BKVG-E1 RAS-13BKVG-E1 Cool min DRY max <Heating operation>...

  • Page 36: Temporary Operation

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 10. Temporary Pressing [RESET] button starts the temporary opera- 1) When pressing [RESET] button, the operation tion of [AUTO] operation. When keeping [RESET] temporary [AUTO] operation starts. button pressed for 10 seconds or more, the temporary 2) When keeping [RESET] button pressed [COOL] operation is performed.

  • Page 37: Pulse Modulating Valve (P .M.v.) Control

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 12. Pulse This function controls throttle amount of the 1) When starting the operation, move the Modulating refrigerant in the refrigerating cycle. valve once until it fits to the stopper. valve (P.M.V.) (Initialize) According to operating status of the air conditioner,...

  • Page 38: Self-Cleaning Function

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 13. 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 39 FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 13. Self-Cleaning function 13-1-1. Self-Cleaning diagram Operation display FCU fan rpm is depend on presetting. (500RPM) FCU louver OPEN OPEN (12.7º) CLOSE ON or OFF ON or OFF Timer display depend on presetting of timer function.

  • Page 40: Remote-A Or B Selection

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 1. Purpose 14. Remote-A or B Setting the remote controller selection This operation is to operate only one To separate using of remote control for each indoor indoor unit using one remote controller. unit in case of 2 air conditioner are installed nearly.

  • Page 41: Display Lamp Brightness Adjustment

    FILE NO. SVM-17031 Item Operation flow and applicable data, etc. Description 16. Display lamp To decrease the display lamp brightness or turn it off. brightness adjustment 1. Press and hold for 3 seconds until brightness level ( ) is shown on remote controller display. to rise or decrease the brightness in 4 levels.

  • Page 42: Auto Restart Function

    FILE NO. SVM-17031 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.

  • Page 43: How To Cancel The Auto Restart Function

    FILE NO. SVM-17031 9-3-2. How to Cancel the Auto Restart Function To cancel auto restart function, proceed as follows : Repeat the setting procedure : the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote controller after the main power supply is turned off. •...

  • Page 44: Remote Controller And Its Fuctions

    FILE NO. SVM-17031 9-4. Remote Controller and Its Fuctions 9-4-1. Parts Name of Remoe Controller Infrared signal emitter Start/Stop button Mode select button (MODE) Temperature button (TEMP) Fan speed button (FAN) Swing louver button (SWING) Set louver button (FIX) Off timer button (OFF) High power button (Hi-POWER) Economy button (ECO) Clear button (CLEAR)
  • Page 45 FILE NO. SVM-17031 5. ECO OPERATION To automatically control room to save energy (except in DRY and FAN ONLY mode) Press : Start and stop the operation. Note: Cooling operation; the set temperature will increase automatically 1 degree/ hour for 2 hours (maximum 2 degrees increase). For heating operation the set temperature will decrease.

  • Page 46: Name And Functions Of Indications On Remote Controller

    FILE NO. SVM-17031 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. . FAN speed indicator Transmission mark Indicates the selected fan speed. This transmission mark indicates when the remote controller transmits signals to the indoor AUTO or five fan speed levels...

  • Page 47: Installation Procedure

    FILE NO. SVM-17031 10. INSTALLATION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units For the rear left and left piping Wall Hook Installation plate Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation.

  • Page 48: Installation

    FILE NO. SVM-17031 10-2. Installation 10-2-1. Optional installation parts Part Parts name Q’ty code Refrigerant piping Liquid side : Ø6.35 mm each Gas side : Ø9.52 mm Pipe insulating material (polyethylene foam, 6mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit> 500 mm Air inlet 97 mm...

  • Page 49: Accessory And Installation Parts

    FILE NO. SVM-17031 10-2-2. 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 Drain nipple* x 1 Mounting screw ∅4 x 25 s x 6 Wireless remote control x 1 Flat head wood screw ∅3.1 x 16 s x 2...
  • Page 50 FILE NO. SVM-17031 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 51: Indoor Unit

    FILE NO. SVM-17031 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 When installing the refrigerant pipes from the rear. indoor unit as shown in the diagram •...

  • Page 52: Piping And Drain Hose Installation

    FILE NO. SVM-17031 <When the installation plate is directly mounted on 10-3-3. Piping and drain hose installation the wall> <Piping and Drain Hose Forming> 1. Securely fit the installation plate onto the wall by * Since dewing results in a machine trouble, make screwing it in the upper and lower parts to hook up sure to insulate both the connecting pipes.
  • Page 53 FILE NO. SVM-17031 <How to fix the Drain Cap> <Left-hand connection with piping> 1) Insert hexagon wrench (4 mm) in a center head. Bend the connecting pipe so that it is laid within 43 mm above the wall surface. If the connecting pipe is laid exceeding 43 mm above the wall surface, the indoor unit may unstably be set on the wall.
  • Page 54 FILE NO. SVM-17031 10-3-4. Indoor unit fixing 10-3-5. 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.

  • Page 55: Outdoor Unit

    FILE NO. SVM-17031 10-4. Outdoor Unit 4. Installation in the following places may result in 10-4-1. Installation place trouble. Do not install the unit in such places. • A place which provides the spaces around the • A place full of machine oil. outdoor unit as shown in the left diagram.

  • Page 56: Air Purge

    FILE NO. SVM-17031 <Tightening connection> AIR PURGE acuate the air in the connecting pipes and in the Align the centers of the connecting pipes and tighten indoor unit using a v acuum pump Do not use the the flare n ut as f ar as possib le with y...

  • Page 57: Vacuum Pump

    FILE NO. SVM-17031 CAUTION • KEEP IMPORTANT 5 POINTS FOR PIPING WORK (1) Take away dust and moisture (Inside of the connecting pipes.) (2) Tight connection (between pipes and unit) (3) Evacuate the air in the connecting pipes using VACUUM PUMP. (4) Check gas leak (connected points) (5) Be save to fully open the packed valves before operation.

  • Page 58: Electrical Works

    The power supply can be selected to connect to indoor unit or outdoor unit. Choose proper way and connect the power supply and connecting cable by follow the instruction as following. Model RAS-10BKVG-E1 RAS-13BKVG-E1 Power source 50Hz, 220 – 240 V Single phase 7.5A...

  • Page 59: Power Supply And Connecting Cable Connection

    FILE NO. SVM-17031-2 10-5-2. Power Supply and Connecting Cable Connection Power Supply Input at Indoor Unit Terminal Block (Recommend) Indoor Unit Outdoor Unit Terminal block Power supply cable Stripping length of the power Power supply cable connect to L N supply cable Terminal block (L N 1 2 3) Earth line...

  • Page 60: Power Supply Input Wiring Diagram

    FILE NO. SVM-17031-2 10-5-3. Power supply input wiring diagram Power supply input at Indoor unit Terminal Block (Recommend) Indoor Terminal Block Power supply input CHASSIS INDOOR UNIT OUTDOOR UNIT Outdoor Terminal Block CHASSIS EARTH Power supply input at Outdoor unit Terminal Block (Optional) Indoor Terminal Block...

  • Page 61: Test Operation

    FILE NO. SVM-17031-2 10-6. Others NOTE : 1. Repeat above step to reset Remote 10-6-1 . Gas leak test Control to be A. 2. Remote Control A has not "A" display. 3. Default setting of Remote Control from Check places for indoor unit (Flarenut factory is A.

  • Page 62: How To Diagnose The Trouble

    FILE NO. SVM-17031-2 11. HOW TO DIAGNOSE THE TROUBLE The pulse motor 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 63 FILE NO. SVM-17031-2 CAUTION A high voltage (equivalent to the supply voltage) is also energized to ground through the sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered with insulated tubes for protection. Nevertheless, care must be taken to ensure that these wires are not pinched.

  • Page 64: First Confirmation

    FILE NO. SVM-17031-2 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 65: Primary Judgment

    FILE NO. SVM-17031-2 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 66: Self-Diagnosis By Remote Controller (Check Code)

    FILE NO. SVM-17031-2 11-4. Self-Diagnosis by Remote Controller (Check Code) 1. If the lamps are indicated as shown B to E in Table 11-3-1, 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 condi- tion and indicates the information of the self-diagnosis on the display of the remote controller with the check codes.
  • Page 67 FILE NO. SVM-17031-2 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 68 FILE NO. SVM-17031-2 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 69 FILE NO. SVM-17031-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the board is over limit in short time.
  • Page 70 FILE NO. SVM-17031-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as (Relation of voltage, current error is detected packed valve opening, refrigerant 8 times*.
  • Page 71 FILE NO. SVM-17031-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the Because of missed wiring, error is detected compressor, and operate again.
  • Page 72 FILE NO. SVM-17031-2 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%) operates error is detected unit has been sent when...

  • Page 73: Judgment Of Trouble By Every Symptom

    FILE NO. SVM-17031-2 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 74 FILE NO. SVM-17031-2 (2) Power is not turned on though Indoor P.C. board is replaced <Confirmation procedure> Turn on power supply. Return the wiring of the power relay is returned to Is it wired as shown in Figure below? Does operation lamp flash? the normal procedure.
  • Page 75 FILE NO. SVM-17031-2 (3) 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...
  • Page 76 FILE NO. SVM-17031-2 (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 CN10 connector while the fan motor is rotating. NOTE : •...
  • Page 77 FILE NO. SVM-17031-2 (4) 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.
  • Page 78 FILE NO. SVM-17031-2 11-5-2. 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 unit to outdoor unit is correctly performed based upon the follow- ing diagram.
  • Page 79 FILE NO. SVM-17031-2 11-6. How to Check Simple the Main Parts <Check procedure> Gas leakage, Discharge temp. error, disconnection of TS/TC gas leakage sensors (Check code 02, 1C) (Check code 03, 1E) Valve drive check Is coil of the pulse motor valve Set it correctly.
  • Page 80 FILE NO. SVM-17031-2 11-7. How to Diagnose Trouble in Outdoor Unit 11-7-1. Summarized Inner Diagnosis of Inverter Assembly Table 11-7-1 Diagnosis/Process flowchart Item Contents Summary Preparation Turn “OFF” the power supply breaker, and remove 3P Remove connector connector which connects of compressor.

  • Page 81: How To Check Simply The Main Parts

    FILE NO. SVM-17031-2 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 20MΩ or more • Is not grounded. Replace control board assembly. ...

  • Page 82: Check Procedures

    FILE NO. SVM-17031-2 (3) Check procedures Table 11-8-1 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 83: Board Layout

    FILE NO. SVM-17031-2 11-8-2. P .C . Board Layout +12V [1] Sensor characteristic table TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TO : Outdoor temp. sensor TS : Suction temp. sensor TA, TC, TO, TS, TE : Outdoor heat exchanger temp sensor...
  • Page 84 FILE NO. SVM-17031-2 11-8-3. 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...
  • Page 85 FILE NO. SVM-17031-2 11-8-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For raising pressure, smoothing) 2. Discharge all three capacitors completely. 3. Check that safety valve at the bottom of capacitor is not broken. 4.

  • Page 86: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    FILE NO. SVM-17031-2 11-9. 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 controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”...

  • Page 87: How To Replace The Main Parts

    FILE NO. SVM-17031-2 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. •...
  • Page 88 FILE NO. SVM-17031-2 Procedures Part name Remarks Front panel 1) Stop operation of the air conditioner and turn off its main power supply. Front panel 2) Open two screw caps and securely remove Air inlet grille screws (2 pcs.) at the front panel. Hooks of front panel Screw...
  • Page 89 FILE NO. SVM-17031 Procedures Part name 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 Vertical louver Set screw Fan motor Hexagon screw driver...
  • Page 90 FILE NO. SVM-17031 Procedures Part name Remarks Drain pan 1) Follow the procedure item 3 . assembly 2) Remove screw holding the electric part cover. Connectors P.C.board Screw Electric part cover Louver motor connector 3) Disconnect the louver motor connector (5P) from P.C.
  • Page 91 FILE NO. SVM-17031 Procedures Part name Remarks Vertical louver 1) Follow the procedure item 3 and 7 . assembly 2) Remove 2 fixing screws from the base vertical Vertical louver louver then remove the vertical louver assembly from the body back. Screw Screw Cross flow fan...
  • Page 92 FILE NO. SVM-17031 Procedures Part name 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 93 FILE NO. SVM-17031 Microcomputer Part name Procedure Remarks  Common procedure 1) Turn the power supply off to stop the Replace terminal block, operation of air-conditioner. microcomputer ass’y and the P .C. board ass’y. 2) Remove the front panel. • Remove the 2 fixing screws. 3) Remove the electrical part base.
  • Page 94 FILE NO. SVM-17031 12-2. Outdoor Unit Part name Procedures Remarks 1. Detachment Common 1) Stop operation of the air conditioner, and procedure turn off the main switch and breaker of the air conditioner. 2) Remove the valve cover. (ST2T∅4 x 10s 1 pc) •...
  • Page 95 FILE NO. SVM-17031 Part name Procedure Remarks Inverter module cover 1) Perform work of item 1 in  ƒ Inverter 2) Remove screw (ST2TØ4×10L 2 pcs.) of the assembly upper part of the front cabinet. • Disconnect connectors all connector on P.C.
  • Page 96 FILE NO. SVM-17031 Part name Procedures Remarks „ Fan motor 1) Perform work of item 1 of 1 and 1 of 2. 2) Remove the flange nut fixing the fan motor Fan motor Propeller fan and the propeller fan. • Flange nut is loosened by turning clockwise.
  • Page 97 FILE NO. SVM-17031 Part name Procedures Remarks 1. Detachment Fan guard 1) Perform work of item 1 of 1 and 1 of 2. Requirement: Perform the work on a corrugated cardboard, cloth, etc. to prevent scratches to the product. 2) Remove the front cabinet, and place it down so that the fan guard side faces downwards.
  • Page 98 FILE NO. SVM-17031 Part name Procedure Remarks 1. Disconnect the leads and connectors connected to Control board assembly the other parts from the control board assembly. 1) Leads • 3 leads (black, white, orange) connected to terminal block. • Lead connected to compressor : Disconnect the connector (3P).
  • Page 99 FILE NO. SVM-17031 Sensor Temperature replacement method Part name Procedures Remarks Replacement of 1) Cut the sensor 100 mm longer than old temperature sensor one. Cutting here Thermal for servicing only Connector sensor part 2) Cut the protective tube after pulling out it (200 mm).

  • Page 100: Exploded Views And Parts List

    FILE NO. SVM-17031 13. EXPLODED VIEWS AND PARTS LIST 13-1. Indoor Unit Location Part Location Part Description Description 43T00685 FRONT PANEL ASSY 43T39368 MOTOR BAND BACK 43T09520 GRILLE OF AIR INLET ASSY 43T39369 MOTOR BAND FRONT 43T80349 AIR FILTER 43T44557 REFRIGERATION CYCLE ASSY 43T03398 BACK BODY ASSY...
  • Page 101 FILE NO. SVM-17031 13-2. Indoor Unit (Part-E) Location Part Location Part Description Description 43T69319 TEMPERATURE SENSOR 43T6V681 PC BOARD ASSY:WRS-LED 43T6V673 TERMINAL(5P-TF) 43T6V915 PC BOARD (RAS-10BKVG-E1) 43T6V674 TEMPERATURE SENSOR 43T6V916 PC BOARD (RAS-13BKVG-E1) 43T62340 CORD-CLAMP - 101 -...
  • Page 102 FILE NO. SVM-17031-3 13-3. Outdoor Unit RAS-10BAVG-E1 Location Part Location Part Description Description 43T19363 FAN GUARD 43T19337 PACKED VALVE COVER 43T20324 PROPELLER FAN 43T00733 UPPER CABINET ASSEMBLY 43T00682 FRONT CABINET ASSEMBLY 43T00448 FIXING PLATE VALVE 43T43537 CONDENSER ASSEMBLY 43T42335 BASE PLATE ASSEMBLY 43T62323 TERMINAL COVER 43T79305...
  • Page 103 FILE NO. SVM-17031-3 13-4. Outdoor Unit RAS-13BAVG-E1 Location Part Location Part Description Description 43T19363 FAN GUARD 43T19337 PACKED VALVE COVER 43T20324 PROPELLER FAN 43T00733 UPPER CABINET ASSEMBLY 43T00683 FRONT CABINET ASSEMBLY 43T00448 FIXING PLATE VALVE 43T43544 CONDENSER ASSEMBLY 43T42335 BASE PLATE ASSEMBLY 43T62323 TERMINAL COVER 43T79305...
  • Page 104 FILE NO. SVM-17031 13-5. Outdoor Unit (Part-E) TE Sensor (Ø6) TS Sensor (Ø6) TD Sensor (Ø6) TD Sensor (Ø4) Location Part Location Part Description Description 43T67306 HEATSINK 43T60459 FUSE 43T6V911 PC BOARD (RAS-10BAVG-E1) 43T60465 TEMPERATURE SENSOR 43T6V912 PC BOARD (RAS-13BAVG-E1) 43T50304 SENSOR;HEAT EXCHANGER 43T60392...
  • Page 105 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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