Toshiba RAS-10S3AV-E Service Manual
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Toshiba RAS-10S3AV-E Service Manual

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FILE NO. SVM-15001
SERVICE MANUAL
SPLIT WALL TYPE
Indoor Unit
Outdoor Unit
RAS-1 0S3KV-E
RAS-1 0S3AV-E
R410A
January, 2015

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Summary of Contents for Toshiba RAS-10S3AV-E

  • Page 1 FILE NO. SVM-15001 SERVICE MANUAL SPLIT WALL TYPE Indoor Unit Outdoor Unit RAS-1 0S3KV-E RAS-1 0S3AV-E R410A January, 2015...

  • Page 2: Table Of Contents

    FILE NO. SVM-15001 CONTENTS 1. SAFETY PRECAUTIONS ................2 2. SPECIFICATIONS ..................4 3. REFRIGERANT R410A ................6 4. CONSTRUCTION VIEWS ................ 14 5. WIRING DIAGRAM .................. 16 6. SPECIFICATIONS OF ELECTRICAL PARTS ......... 18 7. REFRIGERANT CYCLE DIAGRAM ............19 8.

  • Page 3: Safety Precautions

    FILE NO. SVM-15001 1. SAFETY PRECAUTIONS For general public use Power supply cord of parts of appliance for outdoor use shall be at least polychloroprene sheathed flexible cord (design H07RN-F) or cord designation 60245 IEC66 (1.5 mm or more). (Shall be installed in accordance with national wiring regulations.) CAUTION New Refrigerant Air Conditioner Installation...
  • Page 4 • 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. • Do not use any refrigerant different from the one specified for complement or replacement.

  • Page 5: Specifications

    FILE NO. SVM-15001 2. SPECIFICATIONS 2-1. Specification Unit model Indoor RAS-10S3KV-E Outdoor RAS-10S3AV-E Cooling capacity (kW) 1.10-3.00 Cooling capacity range (kW) Heating capacity (kW) 0.9-4.10 Heating capacity range (kW) Power supply 1Ph/50Hz/220-240V , 1Ph/60Hz/220-230V Electric Indoor Operation mode Co o ling...
  • Page 6 FILE NO. SVM-15001 2-2. Operation Characteristic Curve <Cooling> <Heating> 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 Indoor Air Flow : High Pipe Length : 5m Pipe Length : 5m...

  • Page 7: Refrigerant R410A

    FILE NO. SVM-15001 3. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC 6. When an air conditioning system charged with a (R410A) which does not damage the ozone layer. large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, The working pressure of the new refrigerant R410A even when refrigerant leaks, its concentration...
  • Page 8 FILE NO. SVM-15001 Table 3-2-1 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 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 FILE NO. SVM-15001 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 R410A or conven- tional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 10 FILE NO. SVM-15001 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 11 FILE NO. SVM-15001 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 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 FILE NO. SVM-15001 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 FILE NO. SVM-15001 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. 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 FILE NO. SVM-15001 3-5-3. Brazing 2. Characteristics required for flux • 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 15: Construction Views

    FILE NO. SVM-15001 4. CONSTRUCTION VIEWS 4-1. Indoor Unit Air filter Front panel Air filter Heat exchanger Installation plate hanger Wireless remote controller Installation plate hanger Drain hose (0.40m) 17.5 Connecting pipe (0.35m) Connecting pipe (0.40m) Remote controller holder (for 10 series : Flare 9.52mm) (Flare 6.35mm)
  • Page 16 FILE NO. SVM-15001 4-2. Outdoor Unit Electrical parts cover − 15 −...

  • Page 17: Wiring Diagram

    FILE NO. SVM-15001 5. WIRING DIAGRAM 5-1. Indoor Unit 1070029719 Quick check for diagnosing faults – 16 –...
  • Page 18 FILE NO. SVM-15001 – 17 –...

  • Page 19: Specifications Of Electrical Parts

    FILE NO. SVM-15001 6. SPECIFICATION OF ELECTRICAL PARTS 6-1. Indoor Unit Parts name Type Specifications AC Motor with 100°C 5 thermo fuse RPG-240-25A Fan motor (for indoor) Thermo. sensor (TA-sensor) 10 kΩ at 25°C TMPM380FYDFG Microcontroller unit (IC81) Heat exchanger sensor 10 kΩ...

  • Page 20: Refrigerant Cycle Diagram

    FILE NO. SVM-15001 7. REFRIGERANT CYCLE DIAGRAM 7-1. Refrigerant Cycle Diagram Dryer Dia 19.40x134L  Compressor 5RS092XCG01 Refigerant amount : 0.62kg – 19 –...
  • Page 21 FILE NO. SVM-15001 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) 27/19 35/- 0.9 to 1.0 11 to 12 48 to 49 High...

  • Page 22: Control Block Diagram

    FILE NO. SVM-15001 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 FILE NO. SVM-15001 8-2. Outdoor Unit (Inverter Assembly) – 22 –...

  • Page 24: Operation Description

    FILE NO. SVM-15001 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 conditioner, which uses AC or DC motor for the indoor to IGBT module (Compressor stop function) for motor and the outdoor fan motor.
  • Page 25 FILE NO. SVM-15001 9-2. Operation Description 1. Basic operation ......................25 1. Operation control ....................25 2. Cooling/Heating operation ..................26 3. AUTO operation ..................... 26 4. DRY operation ......................26 2. Indoor fan motor control ..................... 27 Capacity control ......................29 Current release control ....................

  • Page 26: Basic Operation

    FILE NO. SVM-15001 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-15001 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 28: Indoor Fan Motor Control

    FILE NO. SVM-15001 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 29 FILE NO. SVM-15001 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: Capacity Control

    Current decrease which does not exceed the Capacity control continues. specified value. Outdoor temp. Cooling current release value Heating current release value RAS-10S3AV-E RAS-10S3AV-E 4.2A 45°C 7.2A 40°C 44°C 5.7A 16°C 39°C...

  • Page 31: Release Protective Control By Temperature Of Indoor Heat Exchanger

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 5. 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 32: Defrost Control (Only In Heating Operation)

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 6. Defrost control (This function removes frost adhered to the outdoor The necessity of defrost operation is (Only in heating heat exchanger.) detected by the outdoor heat exchanger operation) temperature.

  • Page 33: Louver Control

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 7. 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 34: Eco Operation

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 8. ECO When pressing [ECO] button on the remote controller, a <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 35: Temporary Operation

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 9. 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 36: Self-Cleaning Function

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 11. Self-Cleaning 1. Purpose The Self-Cleaning operation is to minimize the function 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 37: Remote-A Or B Selection

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description • Self-Cleaning diagram 11. Self-Cleaning function Operation display FCU fan rpm is depend on presetting. (500RPM) FCU louver OPEN CLOSE OPEN (12.7º) ON or OFF ON or OFF Timer display depend on presetting of timer function.

  • Page 38: Quiet Mode

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 13. QUIET mode Quiet mode is the system which, control the When the [QUIET] button is pressed, the fan of the revolving speed of indoor fan to work indoor unit will be restricted the revolving speed at −...

  • Page 39: Hi-Power Mode

    FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 16. Hi-POWER ([Hi-POWER] button on the remote controller 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 40: Auto Restart Function

    FILE NO. SVM-15001 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 41: How To Cancel The Auto Restart Function

    FILE NO. SVM-15001 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 42 FILE NO. SVM-15001 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 43: Parts Name Of Remote Contr Oller

    The coutomised settings control temperature air flow strength, air flow direction and other settings to provide you alternate contact with "ONE-TOUCH" OF THE BUTTON. If you prefer other settings you can select from the many other operation functions of your Toshiba unit Press : Start the operaton.
  • Page 44 FILE NO. SVM-15001 4. DRY OPERATION (COOLING ONLY) For dehumidification, a moderate cooling performance is controlled automatically. Press : Select Dry MODE 2. Press : Set the desired temperature. 5. Hi-POWER OPERATION To automatically control room temperature and airflow for faster cooling or heating operation (except in DRY and FAN ONLY mode) Press : Start and stop the operation.
  • Page 45 FILE NO. SVM-15001 9. PRESET OPERATION Set your preferred operation for future use. The setting will be memorized by the unit for future operation (except air flow direction). 1. Select your preferred operation. 2. Press and hold for 3 seconds to memorize the setting. The mark displays.

  • Page 46: Name And Functions Of Oller

    FILE NO. SVM-15001 9-4-3. Display of Remote Control All indications, except for the clock time indicator, are displayed by pressing the button. Transmission mark . TIMER and clock time indicator This transmission mark indicates when the The time setting for timer operation or the clock remote controller transmits signals to the indoor time is indicated.

  • Page 47: Installation Procedure

    Do not allow the drain hose to get slack. Cut the piping hole sloped Shield pipe slightly. Toshiba New IAQ Filter (L) Make sure to run the drain hose sloped downward. Flat head Remote control holder wood screw...
  • Page 48 FILE NO. SVM-15001 10-2. Installation 10-2-1. Optional installation parts Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅6.35 mm each ∅ Gas side 9.52 mm Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit> 500 mm Air inlet 97 mm...
  • Page 49 Part Part name (Q’ty) Part name (Q’ty) Part name (Q’ty) Flat head wood screw Toshiba New IAQ filter (L) x 1 ∅3.1 x 25 s x 1 Installation plate x 1 Drain nipple* x 1 Battery-cover x 1 Wireless remote control x 1 Mounting screw ∅4 x 25 s x 6...
  • Page 50 FILE NO. SVM-15001 10-2-3. Installation/Servicing Tools Changes in the product and components In the case of an air conditioner using R410A, 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 FILE NO. SVM-15001 10-3. Indoor Unit 10-3-2. Cutting a hole and mounting installation plate 10-3-1. Installation place <Cutting a hole> A place which provides the spaces around the indoor unit as shown in the diagram in part 8-2. When installing the refrigerant pipes from the rear. A place where there is no obstacle near the air inlet and outlet.
  • Page 52 FILE NO. SVM-15001 <When the installation plate is directly mounted on 10-3-3. Wiring connection the wall> <How to connect the connecting cable> 1. Securely fit the installation plate onto the wall by Wiring of the connecting cable can be carried out screwing it in the upper and lower parts to hook up the indoor unit.
  • Page 53 FILE NO. SVM-15001 <How to connect remote controller for wire operation> 70 mm * Wire size 28-22AWG or 0.08-0.32 mm Outer diameter not over 4.7 mm, Indoor unit control wire length 30 m. or less. 5 mm Notch for wire out Control wire CAUTION Remote controller...
  • Page 54 FILE NO. SVM-15001 Control wire Rear right Control wire Screw (∅3.1 x 16L) for Rear left Hole for hang hang remote controller remote controller Bottom left Remote controller Left Wall Bottom right Remote controller Right Screw (∅3.1 x 25L) for 1.
  • Page 55 FILE NO. SVM-15001 <Left-hand connection with piping> How to fix the drains cap 1) Insert hexagonal wrench (4 mm) in a center Bend the connecting pipe so that it is laid within 43 mm head. 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 56 FILE NO. SVM-15001 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.
  • Page 57 FILE NO. SVM-15001 10-4. Outdoor Unit CAUTION 10-4-1. Installation place 1. Install the outdoor unit without anything blocking • A place which provides the spaces around the the air discharging. outdoor unit as shown in the left diagram. 2. When the outdoor unit is installed in a place •...
  • Page 58 FILE NO. SVM-15001 ial (wing nut type) Imper <Shaping pipes> Outer dia. R410A 1. How to shape the pipes of copper pipe Shape the pipes along the incused line on the ∅ 6.35 1.5 to 2.0 outdoor unit. 2. How to fit position of the pipes ∅...
  • Page 59 FILE NO. SVM-15001 Compound pressure gauge Pressure gauge –101 kPa (- 76 cmHg) Manifold valve Hexagon wrench Handle Lo Handle Hi (Keep full closed) is required. Charge hose (For R410A only) Charge hose (For R410A only) Connecting pipe Vacuum pump adapter for counter-flow prevention (For R410A only) Service Port Cap...
  • Page 60 FILE NO. SVM-15001 10-6 -2 . Remote Control A-B Selection CAUTION • When two indoor units are installed in the same room or · Wrong wiring connection may cause some electrical adjacent two rooms, if operating a unit, two units may parts burn out.
  • Page 61 FILE NO. SVM-15001 10-5-3. Test operation To switch the TEST RUN (COOL) mode, press RESET button for 10 sec. (The beeper will make a short beep.) RESET button F ig. 10-5-3 10-5-4. Auto restart setting This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure.

  • Page 62: How To Diagnose The Trouble

    FILE NO. SVM-15001 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-15001 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 FILE NO. SVM-15001 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 FILE NO. SVM-15001 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 FILE NO. SVM-15001 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-15001 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-15001 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-15001 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-15001 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-15001 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-15001 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 FILE NO. SVM-15001 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-15001 (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 75 FILE NO. SVM-15001 (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-15001 (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-15001 (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-15001 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-15001 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-15001 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 FILE NO. SVM-15001 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. Replace control board assembly. ...
  • Page 82 FILE NO. SVM-15001 (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 FILE NO. SVM-15001 11-8-2. P .C . Board Layout [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 Temperature (˚C)
  • Page 84 FILE NO. SVM-15001 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-15001 Outdoor temperature sensor Disconnect the connector, and measure resistance value with the tester. (TO), discharge temperature (Normal temperature) sensor (TD), suction temperature sensor (TS), exchanger Temperature 10°C 20°C 30°C 40°C 50°C temperature sensor (TE) Sensor TD (kΩ ) TO, TS, TE (kΩ...
  • Page 86 FILE NO. SVM-15001 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. 2.
  • Page 87 FILE NO. SVM-15001 Item Operation flow and applicable data, etc. Description 11-10. Self-Cleaning function 11-10-1. 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 88: How To Replace The Main Parts

    FILE NO. SVM-15001 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 89 FILE NO. SVM-15001 Part name Procedures Remarks  Front panel 4) Press "PUSH" part under the front panel and remove hooks of the front panel from Installation plate the installation plate. Front panel Press 5) Remove the front panel fixing screws. (2 pcs.) 6) Take off three hooks of panel from rear side.
  • Page 90 FILE NO. SVM-15001 Part name Procedures Remarks ‚ ‚ Electric parts 1) Follow the procedure up to 3) in above. box assembly 2) Remove screw of earth lead attached to the end plate of the evaporator. 3) Remove the lead wire cover, and remove connector for the fan motor and connec- tor for the louver motor from the electric parts box assembly.
  • Page 91 FILE NO. SVM-15001 Part name Procedures Remarks ƒ Horizontal louver 1) Remove shaft of the horizontal louver from the back body. (First remove the left shaft, and then remove other shafts while sliding the horizontal louver leftward.) „ ƒ Evaporator 1) Follow to the procedure in the item (Heat exchanger) 2) Remove the pipe holder from the rear side of the main unit.
  • Page 92 FILE NO. SVM-15001 Part name Procedures Remarks … „ Bearing 1) Follow to the procedure in the item 2) Remove the two screws used to secure the bearing base. Two screws 3) Remove the bearing base. <Caution at assembling> • If the bearing is out from the housing, push it into the specified position and then incorporate it in the main body.
  • Page 93 FILE NO. SVM-15001 Part name Procedures Remarks † … Fan motor 1) Follow to the procedure till item 2) Loosen the set screw of the cross flow fan. 3) Remove two fixing screws of the motor cover and them remove the motor cover. 4) Remove two more fixing screws of the motor band and remove the motor band.
  • Page 94 FILE NO. SVM-15001 Part name Procedures Remarks ‡ Cross flow fan <Caution at reassembling> Fan motor D shaft Double point set screw 1) To incorporate the fan motor incorporate the motor into the position in the following figure, and then install the fan motor. •...
  • Page 95 FILE NO. SVM-15001 12-2. 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. •...
  • Page 96 FILE NO. SVM-15001 12-3. Outdoor Unit Part name Procedures Remarks Common 1. Detachment Upper cabinet procedure 1) Stop operation of the air conditioner, and turn off the main switch and breaker of the Wiring cover air conditioner. 2) Remove the valve cover. (ST1T∅4 x 10s Valve cover 1 pc) •...
  • Page 97 FILE NO. SVM-15001 Part name Procedures Remarks 1) Perform work of item 1 of 1. Inverter Inverter cover assembly 2) Remove screw (ST1T∅4 x 10s 1 pc.) of PC board the upper part of the front cabinet. (Soldered surface) • If removing the inverter cover in this condition, the P.C.
  • Page 98 FILE NO. SVM-15001 Part name Procedure Remarks Control board 1. Disconnect the leads and connectors connected to 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-15001 Part name Procedures Remarks 1) Perform work of item 1 of 1 and 1 of 2. Fan motor 2) Remove the flange nut fixing the fan motor Fan motor and the propeller fan. Propeller fan • Flange nut is loosened by turning clockwise.
  • Page 100 FILE NO. SVM-15001 Part name Procedures Remarks Replacement of 1) Cut the sensor 100 mm longer than old Cutting here Thermal temperature one. sensor part Connector sensor for 2) Cut the protective tube after pulling out it servicing only (200 mm). 3) Move the protective tube toward the Cutting here Common service...

  • Page 101: Exploded Views And Parts List

    FILE NO. SVM 15001 13. EXPLODED VIEWS AND PARTS LIST 13-1. Indoor Unit (E-Parts Assy) Location Part Location Part Description Description 43T69319 TEMPERATURE SENSOR 43T6V532 PC BOARD 43T69320 TEMPERATURE SENSOR 43T60378 TERMINAL 43T62340 CORD CLAMP 43T60417 TERMINAL 43T6V316 PC BOARD ASSY;WRS-LED −...
  • Page 102 FILE NO. SVM-15001 13-2. Indoor Unit Electric Parts Assembly Location Part Location Part Description Description 43T21442 STEPPING-MOTOR 43T39327 BEARING BASE 43T21433 FAN-MOTOR 43T39343 MOTOR BAND (LEFT) BEARING ASSY, MOLD MOTOR BAND (RIGHT) 43T22312 43T39329 HORIZONTAL LOUVER 43T70316 HOSE, DRAIN 43T09409 43T20328 CROSS FLOW FAN ASSEMBLY 43T79313...
  • Page 103 FILE NO. SVM-15001 13-3. Outdoor Unit Location Part Location Part Description Description 43T19335 FAN GUARD 43T41472 COMPRESSOR PROPELLER FAN 43T20327 43T19337 PACKED VALVE COVER 43T00482 FRONT CABINET 43T00481 UPPER CABINET 43T43484 CONDENSER ASSEMBLY 43T00448 FIXING PLATE VALVE 43T62323 TERMINAL COVER 43T42335 BASE PLATE ASSEMBLY 43T47308...
  • Page 104 FILE NO. SVM-15001 13-4. Outdoor Unit (E-Parts Assy) TE Sensor (Ø6) TS Sensor (Ø6) TO Sensor (Ø6) TD Sensor (Ø4) Location Part Location Part Description Description 43T62351 HEATSINK 43T50334 TEMPERATURE SENSOR 43T6V531 PCB BOARD 43T50304 SENSOR;HEAT EXCHANGER 43T60392 TERMINAL-5P 43T62313 BASE-PLATE-PC 43T60326 FUSE...
  • Page 105 TOSHIBA CARRIER (THAILAND) CO.,LTD.

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