Toshiba RAS-13N3AV-E Service Manual
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Toshiba RAS-13N3AV-E Service Manual

Split type air conditioner
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FILE NO. SVM-12039

SERVICE MANUAL

SPLIT TYPE
Indoor Unit
Outdoor Unit
<High Wall, Heat Pump Type>
<Heat Pump Type>
RAS-13N3KV-E
RAS-13N3AV-E
R410A
July, 2012

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Summary of Contents for Toshiba RAS-13N3AV-E

  • Page 1: Service Manual

    FILE NO. SVM-12039 SERVICE MANUAL SPLIT TYPE Indoor Unit Outdoor Unit <High Wall, Heat Pump Type> <Heat Pump Type> RAS-13N3KV-E RAS-13N3AV-E R410A July, 2012...

  • Page 2: Table Of Contents

    FILE NO. SVM-12039 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 ......... 17 7. REFRIGERANT CYCLE DIAGRAM ............18 8.

  • Page 3: Safety Precautions

    FILE NO. SVM-12039 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-12039 2. SPECIFICATIONS 1-1. Specifications Unit model Indoor RAS-13N3KV-E Outdoor RAS-13N3AV-E Cooling capacity (kW) Cooling capacity range (kW) 1.1 - 4.0 Heating capacity (kW) Heating capacity range (kW) 0.9 - 5.0 Power supply 1Ph/50Hz/220-240V, 1Ph/60Hz/220-230V Electric Indoor Operation mode...
  • Page 6 FILE NO. SVM-12039 2-3. Operation Characteristic Curve <Cooling> <Heating> Conditions Conditions Indoor : DB 27 C/WB 19 Indoor : DB 20 Outdoor : DB 35 Outdoor : DB 7 C/WB 6 Air Flow : High Air Flow : High Pip Length : 5m Pip Length : 5m Voltage : 230V Voltage : 230V...

  • Page 7: Refrigerant R410A

    FILE NO. SVM-12039 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-12039 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-12039 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-12039 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-12039 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: Recharging Of Refrigerant

    FILE NO. SVM-12039 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-12039 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-12039 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 15: Construction Views

    FILE NO. SVM-12039 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 (0.50m) Connecting pipe (0.35m) Connecting pipe (0.40m) (Flare 9.52mm) (Flare 6.35mm) 17.5 84.5 84.5 Remote controller holder...

  • Page 16: Outdoor Unit

    FILE NO. SVM-12039 4-2. Outdoor Unit Ø6 hole R5.5 Ø6 hole Ø11x14 hole A detail Drawing (Back leg) Ø 11 x 14 Hole Ø 25 Drain outlet B Detail Drawing (Front leg) (For 8 - 10 anchor bolt) Ø Ø FAN-GUARD Ø...

  • Page 17: Wiring Diagram

    FILE NO. SVM-12039 5. WIRING DIAGRAM COMPRESSOR CN300 Q200~205 Q300~305 IGBT MOS-FET P.C.BOARD R221 R321 FAN MOTOR (MCC-5009) R220 R320 CN700 R219 R319 PULSE MOTOR VALVE FUSE VARISTOR T3.15A AC250V DB01 CN603 SURGE (SUCTION PIPE TEMP. SENSOR) ABSORBER CN602 POWER VARISTOR RELAY (OUTDOOR...

  • Page 18: Specifications Of Electrical Parts

    FILE NO. SVM-12039 6. SPECIFICATIONS OF ELECTRICAL PARTS 6-1. Indoor Unit Parts name Type Specifications Fan motor (for indoor) AFN-220-20-4D AC200~240V, 20W Room temp. sensor (TA-sensor) ( - ) 10kΩ at 25°C Heat exchanger temp. sensor (TC-sensor) ( - ) 10kΩ...

  • Page 19: Refrigerant Cycle Diagram

    FILE NO. SVM-12039 7. REFRIGERANT CYCLE DIAGRAM Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. : 20m Min. : 2m Pressure measurement Chargeless : 15m Deoxidized copper pipe Gauge attaching port Outer dia. : 6.35mm Charge : 20g/m Vacuum pump connecting port Thickness : 0.8mm (16 to 20m)

  • Page 20: Operation Data

    FILE NO. SVM-12039 7-2. Operation Data <Cooling> Tempeature Standard Heat exchanger Indoor Outdoor Compressor condition(°C) pressure pipe temp. fan mode fan mode revolution Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps) 11 to 13 27/19 35/- 0.8 to 1.0 46 to 48 High High...

  • Page 21: Control Block Diagram

    FILE NO. SVM-12039 8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit Indoor Unit Control Unit M.C.U. Louver Functions Motor Heat Exchanger Sensor (Tc) • Cold draft preventing Function Room Temperature Sensor (Ta) Louver Motor • 3-minute Delay at Restart for Compressor Drive Control Infrared Rays Signal Receiver •...
  • Page 22 FILE N. SVM-12039 8-2. Outdoor Unit (Inverter Assembly) – 21 –...

  • Page 23: Operation Description

    FILE NO. SVM-12039 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 24 FILE NO. SVM-12039 9-2. Operation Description 1. Basic operation ......................24 1. Operation control ....................24 2. Cooling/Heating operation ..................25 3. AUTO operation ..................... 25 4. DRY operation ......................25 2. Indoor fan motor control ..................... 26 3. Outdoor fan motor control ................... 28 4.

  • Page 25: Basic Operation

    FILE NO. SVM-12039 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 26: Cooling/Heating Operation

    FILE NO. SVM-12039 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 27: Indoor Fan Motor Control

    FILE NO. SVM-12039 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 28 FILE NO. SVM-12039 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 29: Outdoor Fan Motor Control

    FILE NO. SVM-12039 Item Operation flow and applicable data, etc. Description 3. Outdoor fan The blowing air volume at the outdoor unit side is controlled. 1) The operation command sent motor control from the remote controller is Receiving the operation command from the controller of processed by the indoor unit indoor unit, the controller of outdoor unit controls fan speed.

  • Page 30: Capacity Control

    FILE NO. SVM-12039 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 31: Release Protective Control By Temperature Of Indoor Heat Exchanger

    FILE NO. SVM-12039 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 32: Defrost Control (Only In Heating Operation)

    FILE NO. SVM-12039 Item Operation flow and applicable data, etc. Description 7. 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-12039 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 position mode (COOL/HEAT). • 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-12039 Item Operation flow and applicable data, etc. Description 9. ECO When pressing [ECO] button on the remote controller, a <Cooling operation> operation Economic operation is performed. 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-12039 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 36: Pulse Modulating Valve (P .M.v.) Control

    FILE NO. SVM-12039 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 37: Self-Cleaning Function

    FILE NO. SVM-12039 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 38 FILE NO. SVM-12039 Item Operation flow and applicable data, etc. Description 13. Self-Cleaning • Self-Cleaning diagram function 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.

  • Page 39: Remote-A Or B Selection

    FILE NO. SVM-12039 Item Operation flow and applicable data, etc. Description J201 PCB NO : WP-020 14. Remote-A or B 1. Purpose Setting the remote controller selection To separate using of remote control for each indoor This operation is to operate only one unit in case of 2 air conditioner are installed nearly.

  • Page 40: Quiet Mode

    FILE NO. SVM-12039 Item Operation flow and applicable data, etc. Description 15. QUIET mode When the [QUIET] button is pressed, the fan of the Quiet mode is the system which, control the indoor unit will be restricted the revolving speed at revolving speed of indoor fan to work −...

  • Page 41: Hi-Power Mode

    FILE NO. SVM-12039 Item Operation flow and applicable data, etc. Description 18. 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 42: Auto Restart Function

    FILE NO. SVM-12039 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-12039 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 Control

    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 ONE-TOUCH : Start the operaton.
  • Page 45 FILE NO. SVM-12039 4. DRY OPERATION (COOLING ONLY) For dehumidification, a moderate cooling performance is controlled automatically. 1. Press MODE : Select Dry 2. Press MODE : 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 HI-POWER : Start and stop the operation.
  • Page 46 FILE NO. SVM-12039 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 PRESET for 3 seconds to memorize the setting. The mark displays.

  • Page 47: Operation Of Remote Control

    FILE NO. SVM-12039 9-4-2. 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 48: Installation Procedure

    FILE NO. SVM-12039 10. INSTALLATION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units For the rear left and left piping Hook Installation plate Wall Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation.
  • Page 49 FILE NO. SVM-12039 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> 108 mm 125 mm Air inlet...
  • Page 50 Part name (Q’ty) Flat head wood screw ∅3.1 x 25 s x 1 Installation plate x 1 Toshiba New IAQ filter (L) x 1 Drain nipple* x 1 Battery-cover x 1 Wireless remote control x 1 Cap water proof x 2 Mounting screw ∅4 x 25 s x 6...
  • Page 51 FILE NO. SVM-12039 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 52: Indoor Unit

    FILE NO. SVM-12039 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 When installing the refrigerant pipes from the rear. indoor unit as shown in the diagram in part 8-2. A place where there is no obstacle near the air inlet and outlet.
  • Page 53 FILE NO. SVM-12039 <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 54 FILE NO. SVM-12039 <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, control wire length 30 m. or less. Indoor unit 5 mm Notch for wire out Control wire Remote controller Fig.
  • Page 55 FILE NO. SVM-12039 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 56 FILE NO. SVM-12039 <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 57 FILE NO. SVM-12039 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 58 FILE NO. SVM-12039 10-4. Outdoor Unit 10-4-2. Refrigerant piping connection 10-4-1. Installation place <Flaring> • A place which provides the spaces around the 1. Cut the pipe with a pipe cutter. outdoor unit as shown in the left diagram. • A place which can bear the weight of the outdoor Roughness Warp Obliquity...
  • Page 59 FILE NO. SVM-12039 <Using a vacuum pump> CAUTION Be sure to use a vacuum pump with counter-flow Do not apply excess torque. prevention function so that inside oil of the pump does Otherwise, the nut may crack depending on the not flow backward into pipes of the air conditioner conditions.
  • Page 60 FILE NO. SVM-12039 <Packed valve handling precautions> 10-4-5. Wiring connection • Open the valve stem all the way out, but do not try 1. Remove the valve cover from the outdoor unit. to open it beyond the stopper. 2. Connect power cord to the terminal block then connect the connecting cable to the Pipe size of Packed Valve Size of Hexagon wrench...
  • Page 61 FILE NO. SVM-12039 10-5. Others NOTE : 1. Repeat above step to reset Remote Control to be A. 10-5-1. Gas leak test 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-12039 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-12039 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-12039 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-12039 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-12039 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-12039 11-4-2. Caution at Servicing 1. After servicing, press the [ ] button to return to the normal mode. 2. After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.
  • Page 68 FILE NO. SVM-12039 Block distinction Operation of diagnosis function Judgment and action Check Check Block Cause of operation conditioner Remarks code code status Outdoor P.C. Inverter over-current All off Displayed when Even if trying operation again, all board protective circuit error is detected.

  • Page 69: Judgment Of Trouble By Every Symptom

    FILE NO. SVM-12039 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 70 FILE NO. SVM-12039 (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 71 FILE NO. SVM-12039 (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 72 FILE NO. SVM-12039 (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 CN31 connector while the fan motor is rotating. NOTE : •...
  • Page 73 FILE NO. SVM-12039 (4) Troubleshooting for remote control The unit does not beep at all. Press [ OPERATION lamp on button. indoor unit is not indicated. Is transmission mark indicated? Press RESET button on remote control Is receiver on with tip of pencil. indoor unit exposed to direct sunlight? Does indoor unit...
  • Page 74 FILE NO. SVM-12039 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 75: How To Check Simple The Main Parts

    FILE NO. SVM-12039 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 76: How To Diagnose Trouble In Outdoor Unit

    FILE NO. SVM-12039 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 77: How To Check Simply The Main Parts

    FILE NO. SVM-12039 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 78 FILE NO. SVM-12039 (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 79 FILE NO. SVM-12039 11-8-2. P .C . Board Layout + 5V + 12V +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 80 FILE NO. SVM-12039 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 81 FILE NO. SVM-12039 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 82: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    FILE NO. SVM-12039 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 83 FILE NO. SVM-12039 11-10. How to setting the CLEAN OPERATION cancel 1. Add J201 of indoor PC board assembly. (If AUTO RESTART set before, will automatic cancel when add J201) J201 2. Turn ON breaker, then hold down the [RESET] button on the indoor unit for 3 seconds but not more than 10 seconds.

  • Page 84: How To Replace The Main Parts

    FILE NO. SVM-12039 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 85 FILE NO. SVM-12039 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 86 FILE NO. SVM-12039 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 87 FILE NO. SVM-12039 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 88 FILE NO. SVM-12039 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 89 FILE NO. SVM-12039 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 90 FILE NO. SVM-12039 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 91 FILE NO. SVM-12039 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 92 FILE NO. SVM-12039 12-3. Outdoor Unit Part name Procedure Remarks  Common 1. Detachment procedure NOTE Upper cabinet Wear gloves for this job. Otherwise, you may injure your hands on the parts, etc. Waterproof cover 1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.
  • Page 93 FILE NO. SVM-12039 Part name Procedure Remarks ‚ Front cabinet 1. Detachment  1) Perform step 1 in 2) Remove the fixing screws (ST1TØ4 × 10L 2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST1TØ4 ×...
  • Page 94 FILE NO. SVM-12039 Part name Procedure Remarks  ƒ Inverter 1) Perform work of item 1 in Inverter cover assembly 2) Remove screw (ST1TØ4 × 10L 2 pcs.) of the upper part of the front cabinet. P.C. board (Soldered surface) •...
  • Page 95 FILE NO. SVM-12039 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 CN603 • 3 leads (black, white, orange) connected to terminal block. CN601 CN600 CN701...
  • Page 96 FILE NO. SVM-12039 Part name Procedure Remarks … Side cabinet 1. Side cabinet (right) ‚ 1) Perform step 1 in and all the steps in ƒ 2) Remove the fixing screw (ST1TØ4 × 10L 4 pcs.) used for securing the side cabinet to the bottom plate and valve fixing panel.
  • Page 97 FILE NO. SVM-12039 Part name Procedure Remarks  ‚ ƒ „ ‡ Compressor 1) Perform work of item 1 of … 2) Extract refrigerant gas. 3) Remove the partition board. (ST1TØ4 × 10L 3 pcs.) 4) Remove the sound-insulation material. 5) Remove terminal cover of the compressor, and disconnect lead wire of the compressor Partition...
  • Page 98 FILE NO. SVM-12039 Part name Procedure Remarks ‰ Electronic 1. Detachment expansion valve ‚ ƒ 1) Perform step 1 in , all the steps in coil … and 1 in 2) Remove the coil by pull it upward. 2. Attachment 1) Insert a valve coil to value body by push it downward.
  • Page 99 FILE NO. SVM-12039 Part name Procedure Remarks TE sensor (outdoor heat exchanging temperature sensor) • Attachment Arrow D Install the sensor onto the straight pipe part of the condenser output pipe. Detail B Detail C Detail A • Shown in the above figure is the model 16k.
  • Page 100 FILE NO. SVM-12039 Part name Procedure 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). Common service 3) Move the protective tube toward the Cutting here...

  • Page 101: Exploded Views And Parts List

    FILE NO. SVM-12039 13. EXPLODED VIEWS AND PARTS LIST 13-1. Indoor Unit (Part-E) Location Part Location Part Description Description 43T69319 TEMPERATURE  SENSOR 43T6V334 PC BOARD 43T69320 TEMPERATURE  SENSOR  43T60378 TERMINAL 43T62340 CORD‐CLAMP 43T60417 TERMINAL 43T6V316 PC BOARD ASSY;WRS‐LED – 100 –...
  • Page 102 FILE NO. SVM-12039 13-2. Indoor Unit Electric Parts Assembly Location Part Location Part Description Description 43T21435 STEPPING MOTOR ASSEMBLY 43T39327 BEARING BASE 43T21409 FAN MOTOR  43T39328 MOTOR BAND (LEFT)  43T22312 BEARING ASSY, MOLD  43T39329 MOTOR BAND (RIGHT)  43T70313 HOSE, DRAIN 43T09409 HORIZONTAL LOUVER 43T20325 CROSS FLOW FAN ASSEMBLY 43T79313 CAP, DRAIN 43T11301 PIPE SHIELD 43T44402 REFRIGERANT CYCLE ASSEMBLY 43T83003 HOLDER, REMOTE CONTROL  43T00587 PANEL SERVICE ASSEMBLY 43T60382 MOTOR CORD ...
  • Page 103 FILE NO. SVM-12039 13-3. Outdoor Unit Location Part Location Part Description Description 43T00468 FRONT CABINET 43T46351 REACTOR 43T00459 LEFT CABINET 43T20319 PROPELLER FAN 43T42327 BASE PLATE ASSEMBLY 43T21375 FAN MOTOR 43T00452 UPPER CABINET 43T47001 NUT FLANGE 43T19329 FAN GUARD 43T97001 NUT 43T00562 PACKED VALVE COVER ASSEMBLY 43T49335 RUBBER CUSHION 43T41420 COMPRESSOR  43T46343 4 WAY VALVE 43T43434 CONDENSER ASSEMBLY 43T63320 4 WAY VALVE COIL ASSEMBLY 43T46358 VALVE;PACKED 6.35 DIA...
  • Page 104 FILE NO. SVM-12039 13-4. P.C. Board Layout Ø TE Sensor ( (Ø6) TS Sensor (Ø6) TO Sensor (Ø4) TD Sensor Location Part Location Part Description Description 43T62320 HEATSINK 43T60377 TEMPERATURE  SENSOR 43T69815 PC BOARD 43T50304 SENSOR;HEAT EXCHANGER 43T60392 TERMINAL‐5P 43T62313 BASE‐PLATE‐PC 43T60326 FUSE  –...
  • Page 105 FILE NO. SVM-03005 TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND. – 56 –...

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