Toshiba RAS-M10UKV-E3 Service Manual
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Toshiba RAS-M10UKV-E3 Service Manual

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SERVICE MANUAL

AIR-CONDITIONER
RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3
RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3
RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3
R410A
FILE NO.SVM-04015
SPLIT TYPE
RAS-4M27YAV-E
RAS-4M27YACV-E
RAS-3M26YAV-E

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Summary of Contents for Toshiba RAS-M10UKV-E3

  • Page 1: Service Manual

    FILE NO.SVM-04015 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-4M27YAV-E RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 RAS-4M27YACV-E RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-3M26YAV-E R410A...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS..................3 2. REFRIGERANT R410A ................26 3. CONSTRUCTION VIEWS ................. 34 4. WIRING DIAGRAM ................... 36 5. SPECIFICATIONS OF ELECTRICAL PARTS .......... 38 6. REFRIGERANT CYCLE DIAGRAM ............40 7. CONTROL BLOCK DIAGRAM ..............48 8. OPERATION DESCRIPTION ..............50 9.

  • Page 3: Specifications

    1. SPECIFICATIONS 1-1. Specifications RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3/RAS-4M27YAV-E, RAS-3M26YAV-E Unit model Indoor RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 Outdoor RAS-4M27YAV-E RAS-3M26YAV-E Cooling capacity (kW) Cooling capacity range (kW) 1.4 – 9.2 1.4 – 8.9 Heating capacity (kW) Heating capacity range (kW) 0.8 – 11.0 0.8 –...
  • Page 4 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3/RAS-4M27YACV-E Unit model Indoor RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 Outdoor RAS-4M27YACV-E Cooling capacity (kW) Cooling capacity range (kW) 1.4 – 9.2 Power supply 220/230/240V, 1Ph, 50/60Hz Electric Indoor Unit model RAS-M10UKCV-E3 RAS-M13UKCV-E3 RAS-M16UKCV-E3 characteristics Running current 0.15 0.15 0.15 Power consumption Power factor 91/87/83 91/87/83...

  • Page 5: Table Of Contents

    (950 to 2900) (4.80 to 13.45) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 5 –...

  • Page 6: Table Of Contents

    (950 to 2900) (4.59 to 12.87) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 6 –...

  • Page 7: Table Of Contents

    (950 to 2900) (4.40 to 12.33) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 7 –...

  • Page 8: Table Of Contents

    (500 to 2850) (2.84 to 13.22) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 8 –...

  • Page 9: Table Of Contents

    (500 to 2850) (2.72 to 12.64) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 9 –...
  • Page 10 (500 to 2850) (2.60 to 12.12) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 10 –...

  • Page 11: Table Of Contents

    Outdoor Unit : RAS-4M27YACV-E <Cooling/220V> Power Indoor unit Unit capacity (kW) Cooling Power Operating Outdoor Operating supply capacity consumption current noise status (kW) (dB) 3.87 1 unit – – – – – – (1.4 to 3.2) (640 to 950) (3.68 to 4.64) 1200 5.74 –...

  • Page 12: Table Of Contents

    Outdoor Unit : RAS-4M27YACV-E <Cooling/230V> Power Indoor unit Unit capacity (kW) Cooling Power Operating Outdoor Operating supply capacity consumption current noise status (kW) (dB) 3.71 1 unit – – – – – – (1.4 to 3.2) (640 to 950) (3.52 to 4.44) 1200 5.49 –...

  • Page 13: Table Of Contents

    Outdoor Unit : RAS-4M27YACV-E <Cooling/240V> Power Indoor unit Unit capacity (kW) Cooling Power Operating Outdoor Operating supply capacity consumption current noise status (kW) (dB) 3.55 1 unit – – – – – – (1.4 to 3.2) (640 to 950) (3.38 to 4.26) 1200 5.26 –...

  • Page 14: Table Of Contents

    (980 to 2950) (4.95 to 13.68) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 14 –...
  • Page 15 (980 to 2950) (4.73 to 13.09) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 15 –...

  • Page 16: Table Of Contents

    (980 to 2950) (4.54 to 12.54) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 16 –...
  • Page 17 (380 to 2800) (2.16 to 12.99) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 17 –...

  • Page 18: Table Of Contents

    (380 to 2800) (2.07 to 12.42) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 18 –...
  • Page 19 (380 to 2800) (1.98 to 11.90) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 – 19 –...

  • Page 20: Operation Characteristic Curve

    1-2-1. Operation Characteristic Curve <Cooling> <Heating> • Conditions • Conditions 220V Indoor : DB27˚C/WB19˚C Indoor : DB20˚C 220V Outdoor : DB35˚C Outdoor : DB7˚C / WB6˚C Air flow : High Air flow : High Pipe length : 5m x 4 Pipe length: 5m x 4 4 units operating 4 units operating...

  • Page 21: Electrical Data

    9.99 0.15 x 4 = 0.60 NOTE : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)
  • Page 22 8.88 0.15 x 4 = 0.60 NOTE : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)
  • Page 23 Outdoor Unit : RAS-4M27YACV-E <Cooling> System Compressor Fan motor FLA Combination of Voltage range Power supply indoor unit operation Volts- MOCP Indoor Outdoor (Amps) Min. Max. 1 unit – – – 4.48 4.48 3.06 3.06 0.15 x 1 = 0.15 –...
  • Page 24 9.03 0.15 x 3 = 0.45 NOTE : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)
  • Page 25 10.36 0.15 x 3 = 0.45 NOTE : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)

  • Page 26: Refrigerant R410A

    2. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC (5) After completion of installation work, check to (R410A) which does not damage the ozone layer. make sure that there is no refrigeration gas leakage. The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant If the refrigerant gas leaks into the room, coming (R22).
  • Page 27 Table 2-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A 6.35 0.80 0.80 9.52 0.80 0.80 12.70 0.80 0.80 (2) Joints b) Socket Joints For copper pipes, flare joints or socket joints are Socket joints are such that they are brazed used.
  • Page 28 c) Insertion of Flare Nut Flare processing dimensions differ according to the type of flare tool. When using a con- d) Flare Processing ventional flare tool, be sure to secure “dimen- Make certain that a clamp bar and copper sion A” by using a gauge for size adjust- pipe have been cleaned.
  • Page 29 Table 2-2-6 Flare and flare nut dimensions for R22 Flare nut Dimension (mm) Nominal Outer diameter Thickness width diameter (mm) (mm) (mm) 6.35 9.52 13.0 13.5 12.70 16.2 16.0 12.9 Fig. 2-2-2 Relations between flare nut and flare seal surface (2) Flare Connecting Procedures and Precautions When it is strong, the flare nut may crack and may be made non-removable.
  • Page 30 2-3. Tools 2-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened. The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge, clogging of capillary, etc.

  • Page 31: Recharging Of Refrigerant

    2-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. When the compound gauge’s pointer has indicated –0.1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum Connect the charge hose to packed valve service...

  • Page 32: Brazing Of Pipes

    Be sure to make setting so that liquid can be charged. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.
  • Page 33 (2) Characteristics required for flux 2-5-3. Brazing • Activated temperature of flux coincides with the As brazing work requires sophisticated techniques, brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. • Due to a wide effective temperature range, flux is hard to carbonize.

  • Page 34: Construction Views

    3. CONSTRUCTION VIEWS 3-1. Indoor Unit RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 Front panel Air filter Air inlet Heat exchanger Back body Air outlet Knock out system Knock out system Hanger Connecting pipe (0.43m) Drain hose (0.54m) (Flare ∅6.35) Hanger Connecting pipe (0.33m)

  • Page 35: Outdoor Unit

    3-2. Outdoor Unit RAS-4M27YAV-E/RAS-4M27YACV-E/RAS-3M26YAV-E Knock out Ø20 x 60hole Ø25 hole Ø8 hole 3-Ø3. 5 hole 86 12 Knock out Anchor bolt (4-Ø12 x 17 hole) Fan guard Handle Liquid valve Gas valve Service port Outdoor air temperature sensor Handle 4 Units Multi Model Only Connecting pipe port (Ø6.35) D unit...

  • Page 36: Wiring Diagram

    4. WIRING DIAGRAM 4-1. Indoor Unit RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 or MCC-5014 Table 4-1-1 Simple check points for diagnosing faults Color Identification Check items Diagnosis result BRW : BROWN OPERATION Check to see if the OPERATION indicator goes on and off when the main switch...
  • Page 37 Color Identification 4-2. Outdoor Unit BLACK WHITE RAS-4M27YAV-E/RAS-4M27YACV-E/RAS-3M26YAV-E BLUE BROWN ORANGE NOTE GRAY YELLOW IGBT : Insulated Gate Bipolar PINK PURPLE Transistor GREEN CN802 : Pulse Modulating Valve : Discharge Temp. sensor TGa to TGd : Temp. sensor at A to D unit T03 CT Compressor CN09...

  • Page 38: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Indoor Unit RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 Parts name Type Specifications Fan motor (for indoor) ICF-35-19-4 DC 340V, 30W Thermo. sensor (TA-sensor) ( – ) 10kΩ at 25°C DC-DC transformer (T01) SWT-70 DC 390V, Secondary DC 15V, 12V, 7V Microcomputer ( –...
  • Page 39 5-2. Outdoor Unit RAS-4M27YAV-E, RAS-4M27YACV-E, RAS-3M26YAV-E Parts name Model name Rating SC coil (Noise filter) (L01) SC-20-01J-A AC2 50V, 20A, 0.15mH SC coil (Noise filter) (L02) SC-20-S03J AC 250V, 20A, 0.3mH Primary side DC 280V Secondary side : DC-DC transformer SWT-43 7.5V x 1, 13V x 1 26.5V x 3, 16V x 1, 15V x 1...

  • Page 40: Refrigerant Cycle Diagram

    6. REFRIGERANT CYCLE DIAGRAM RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-4M27YAV-E Temp. measurement Indoor unit A D room C room B room D room C room B room Evaporator Per 1 unit Cross flow fan Max. : 25m Min. : 2m Connecting pipe Total Thickness : 0.8mm...
  • Page 41 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 RAS-4M27YACV-E Temp. measurement D room C room B room D room C room B room Indoor unit A Evaporator Cross flow fan Per 1 unit Max. : 25m Min. : 2m Connecting pipe Thickness : 0.8mm Total Ø12.7 : Connecting pipe Max.
  • Page 42 RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-3M26YAV-E Temp. measurement Indoor unit A C room B room C room B room Evaporator Per 1 unit Cross flow fan Max. : 25m Min. : 2m Connecting pipe Thickness : 0.8mm Total Ø12.7 : Max. : 50m...

  • Page 43: Operation Data

    12 to 14 51 to 53 High NOTES : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 4 units (5m/each indoor unit) –...
  • Page 44 33 to 35 –2 to 0 High NOTES : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 4 units (5m/each indoor unit) –...
  • Page 45 Outdoor Unit : RAS-4M27YACV-E <Cooling> Temperature Operating combination Heat exchanger No. of Standard Compressor condition (Unit) pipe temp. Indoor Outdoor operating pressure revolution units P (MPa) (rps) Indoor Outdoor T1 (°C) T2 (°C) 1 unit – – – 0.8 to 1.0 9 to 11 45 to 47 High...
  • Page 46 12 to 14 51 to 53 High NOTES : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 3 units (5m/each indoor unit) –...
  • Page 47 37 to 39 –2 to 0 High NOTES : Model of Indoor unit 10 : RAS-M10UKV-E3, 13 : RAS-M13UKV-E3, 16 : RAS-M16UKV-E3 NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 3 units (5m/each indoor unit) –...

  • Page 48: Control Block Diagram

    Louver ON/OFF Signal Remote ON/OFF Signal Control Louver Driver Louver Motor Noise Filter From Outdoor Unit Outdoor Unit REMOTE CONTROLLER RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 (Heat pump model) (Cooling only model) Infrared Infrared Rays Rays Remote Controller Remote Controller...

  • Page 49: Outdoor Unit (Inverter Assembly)

    7-2. Outdoor Unit (Inverter Assembly) RAS-4M27YAV-E, RAS-4M27YACV-E, RAS-3M26YAV-E Outdoor air temp. Sensor Gas side pipe temp. Sensor Suction temp. Sensor Evaporator temp. Sensor Discharge temp. Sensor MCC-818 (SUB-P.C. B) A unit A unit P.M.V. M.C.U send/receive circuit • Inverter outdoor frequency control B unit P.M.V.

  • Page 50: Operation Description

    8. OPERATION DESCRIPTION (2) Role of outdoor unit controller 8-1. Outline of Air Conditioner Control Receiving the operation command signal (Serial This air conditioner is a capacity-variable type air signal) from the indoor controller, the outdoor conditioner, which uses DC motors for the indoor fan unit performs its role.
  • Page 51 (4) Contents of operation command signal (Serial 8-1-1. Capacity Control signal) from outdoor unit controller to indoor unit The cooling capacity is varied by changing compres- controller sor motor speed. The inverter changes compressor The following signals are sent from the outdoor motor speed by changing AC 220–240V power to unit controller.
  • Page 52 8-1-4. Prevent-Freezing Control 8-1-6. Louver Control The indoor heat exchanger sensor detects refriger- (1) Vertical air flow louvers ant vapor temperature in COOL/DRY operation. If Positions of vertical air flow louvers are automati- the temperature is below the specified value, com- cally controlled according to the operation status pressor motor speed is reduced so that operation is (AUTO, COOL, DRY, HEAT).

  • Page 53: Description Of Operation Circuit

    8-1-7. Outdoor Fan Control (DC Fan Motor) Although the outdoor fan motor drives the outdoor fan by non-step variable system of the revolution speed, the revolution speed is restricted to three steps on the convenience of controlling. If a strong wind is lashing outside of the room, the operation may be continued as the outdoor fan stops in order to protect the outdoor fan motor.
  • Page 54 8-2-2. Cooling Operation (1) Cooling capacity control (The Remote controller MODE Button • The cooling capacity and room temperature is Set to the COOL Position) are controlled by changing the compressor motor speed according to both the difference • Once the setting is made, the operation mode is between the temperature detected by the room memorized in the microcomputer so that the same temperature sensor and the temperature set by...
  • Page 55 (5) Limit for maximum compressor motor speed (7) Discharge temperature control by indoor fan speed The discharge temperature of refrigerant gas When outdoor temperature sensor detected from the compressor is detected by the dis- 32°C or lower, and indoor heat exchanger charge temperature sensor, and controls operat- sensor detected 17°C or lower, the maximum ing compressor motor speed.
  • Page 56 (8) ECONO. operation control When the ECONO. button of the remote controller is pushed, quiet and mild operation is performed by restraining air flow and operating motor speed. 1) Indoor air flow is controlled between SUL and L– (Low air (–)). 2) Setting M10 at 20 rps, M13 at 20 rps and M16 at 20 rps as the maximum operating compressor motor speed, the minimum capacity operation range is widened every 1 hour and 2 hours have passed after ECONO.
  • Page 57 (1) Dehumidifying-preferential Cooling capacity [Cold draft preventing control] control The upper limit of fan revolution speed is shown • The cooling capacity and room temperature are below. controlled by changing the compressor motor speed according to both the difference between HIGH the temperature detected by the room temperature sensor and the temperature set by TEMP button...
  • Page 58 (2) High-temp. release control c. The counted time is 34 minutes or more, and status that temperature of the outdoor If temperature of the indoor heat exchanger heat exchanger detected by the outdoor detected by the indoor heat exchanger sensor is heat exchanger is –5°C or lower and 55°C or higher, compressor motor speed is temperature lowered by 3.0 °C than the...

  • Page 59: Temporary Operation

    8-3. Temporary Operation (5) Louver control The vertical air flow louvers are automatically set • Temporary Auto operation, existence of Auto to heating position or heat memory position. Restart, and Temporary Cooling operation can be When the compressor is turned off by high-temp. set by the TEMPORARY button of the indoor release control, the vertical air flow louvers close controller.

  • Page 60: Auto Restart Function

    8-4. Auto Restart Function 8-4-1. How to Set the Auto Restart To set the Auto Restart function, proceed as follows: This unit is equipped with an Automatic restarting facility which allows the unit to restart and resume Access the TEMPORARY button located in the lower the set operating conditions in the event of a power right hand corner beneath the hinged front panel of supply shutdown without the use of the hand...
  • Page 61 8-4-2. How to Cancel the Auto Restart To cancel the Auto Restart function, proceed as follows: Repeat the setting procedure: the unit will acknowledge the instruction and beep three times. The system will now be required to manually restart with the remote controller after the main supply is turned off. Cancellation is carried out: •...

  • Page 62: Remote Control

    8-5. Remote control Memory button (MEMO) 8-5-1. Remote control and its functions Press this button to stand by memorizing the RAS-M10UKCV, RAS-M13UKCV, RAS-M16UKCV settings. Press the button again for more than 4 seconds 1 Infrared signal emitter to memorize the setting indicated on the remote Transmits a signal to the indoor unit.
  • Page 63 8-5-2. Names and functions of indications on remote control Display All indications, except for clock time indication, are indicated by pressing the START/STOP button. 1 Transmission mark This transmission mark (,) indicates when the remote control transmits signals to the indoor unit. 2 Mode display Indicates the current operation mode.

  • Page 64: Installation Procedure

    And, make sure the equipment to be earthed. • Appliance shall be installed in accordance with national wiring regulations. If you detect any damage, do not install the unit. Contact your Toshiba dealer immediately. CAUTION • Exposure of unit to water or other moisture before installation will result in an electrical short.
  • Page 65 9-1-1. Installation/Servicing Tools Changes in the product and components In the case of an air condition using R-410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch) •...

  • Page 66: Indoor Unit

    9-2. Indoor unit RAS-M10UKV-E3,RAS-M13UKV-E3,RAS-M16UKV-E3 RAS-M10UKCV-E3,RAS-M13UKCV-E3,RAS-M16UKCV-E3 For the rear left and left piping Hook Installation plate Wall Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation. Do not allow the drain hose to get slack.
  • Page 67 Mounting the Installation Plate 9-2-2. Installation Place For installation of the indoor unit, use the paper pattern on the back. • A place which provides the spaces around the indoor unit as shown in Anchor bolt holes the above diagram. •...
  • Page 68 9-2-6 Piping and Drain Hose Installation CAUTION Piping and Drain Hose Forming • This appliance can be connected to the mains in either of the following two ways. * Since dewing results in a machine trouble, make sure to insulate both (1) Connection to fixed wiring : the connecting pipes.
  • Page 69 9-2-6 Indoor Unit Fixing In case of right or left piping • After scribing slits of the front panel 1. Pass the pipe through the hole in the wall, and hook the indoor unit on the installation plate at the upper hooks. with a knife or a making-off pin, cut 2.
  • Page 70 9-2-8. Setting of Remote Controller Selector (1) Stop the operation of the air conditioner and turn turn off its main power supply. Switch (2) Pull the air inlet grille toward you to open it and When two indoor units are installed in the remove the air inlet grille.
  • Page 71 2. Setting of remote controller selector at the 9-2-9. Check and Test Operation remote controller side ¨ 1. Check the unit is firmly hooked up on the installation plate. [B] of the remote controller is displayed with ¨ 2. Check the connecting pipes tightened liquid crystal only when it is set to [B].
  • Page 72 9-3. Outdoor Unit CAUTION 9-3-1. Accessory and 1. Install the outdoor unit without anything Installation Parts blocking the air discharging. 2. When the outdoor unit is installed in a place exposed always to a strong wind like a coast or on a high story of a building, secure the normal fan operation using a duct or a wind shield.
  • Page 73 9-3-6. Refrigerant Piping Connection • Flaring size : A (Unit : mm) - 0.4 Outer dia. of copper pipe CAUTION R410A 6.35 KEEP IMPORTANT 4 POINTS FOR PIPING 9.52 13.2 13.0 WORK 12.7 16.6 16.2 1. Take away dust and moisture. In the case of flaring for R410A with the conven- (Inside of the connecting pipes) tional flare tool, pull out it approx.
  • Page 74 1. Piping connections to the outdoor unit should be Tightening connection arranged in the sequence A, B, C, D starting from the bottom. Align the centers of the connecting pipes and tighten (For each piping connection, the gas pipe is on the flare nut as far as possible with your fingers.
  • Page 75 9-3-8. Evacuating Packed valve handling precautions After the piping has been connected to all indoor • Open the valve stem all the way out ; do not try to unit(s), you can perform the air purge together at open it beyond the stopper. once.
  • Page 76 3 units (A + B + C) Multi 9-3-10. Check and Test Operation For R410A, use the leak detector exclusively Terminal block (Connecting cable) manufactured for HFC refrigerant (R410A, R134a, etc.). The conventional leak detector for HCFC refriger- ant (R22, etc.) cannot be used because its sensi- Screw tivity for HFC refrigerant lowers to approx.
  • Page 77 9-3-11. Miswiring (Mispiping) Check 5. During check (Check time 3 to 20 minutes). • When an error describes in the table below Make sure that the wiring and piping for each room occurred check operation stops and error code have the same alphabetical codes (A, B, C, D). is displayed on LED.
  • Page 78 Useful Functions Self-Diagnosis by LED Indication • For this outdoor unit, the self-diagnosis is possible by using five LEDs (1 Yellow + 4 Red). LEDs (D800 to D804) are provided on P.C. board of the inverter. 1. If a trouble occurs, LED goes on LED indication Indoor Contents...

  • Page 79: How To Diagnose The Trouble

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

  • Page 80: First Confirmation

    10-1. First Confirmation 10-1-3. Operation Which is not a Trouble (Program Operation) 10-1-1. Confirmation of Power Supply For controlling the air conditioner, the program Confirm that the power breaker operates (ON) nor- operations are built in the microcomputer as de- mally.
  • Page 81 10-3. Judgment by Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section. Table 10-3-1 Lamps Self-diagnosis OPERATION lamp is blinking.
  • Page 82 10-4. Self-Diagnosis by Remote Control (Check Code) (1) If the lamps are indicated as shown B to H in Table 11-3-1, exchanger the self-diagnosis by the remote control. (2) When the remote control is set to the service mode, the indoor controller diagnoses the opera- tion condition and indicate the information of the self-diagnosis on the display of the remote control with the check codes.
  • Page 83 10-4-2. Caution at Servicing (1) After servicing, push the START/STOP button to return to the normal mode. (2) After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status. However, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.
  • Page 84 Block distinction Operation of diagnosis function Check Check Judgment and action Block Cause of operation conditioner Remarkes code code status Inverter over-current All off Displayed when Outdoor P.C. Even if trying operation again, all board protective circuit operates. error is detected. operations stop immediately.

  • Page 85: Judgement Of Trouble By Every Symptom

    10-5. Judgement of Trouble by Every Symptom 10-5-1. Indoor unit (Including remote controller) (1) Power is not turned on (Does not operate entirely) Turn off power Operation supply once, and 5 second later, turn it Check item on again. Conceivable principle cause Is OPERATION lamp blinking?
  • Page 86 (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 87 (3) Only indoor fan motor does not operate. <Preliminary check> 1 Is it possible to detect the power supply voltage (200 – 240V) between 1 and 2 on the terminal block? 2 Does the indoor fan motor operate in cooling operation? (In heating operation, the indoor fan motor does not operate for Operation approximately 5 minutes after it is turned on, to prevent a cold air...
  • Page 88 (4) Indoor fan motor starts rotating by turning on power supply alone <Cause> The IC is built in the indoor fan motor. Therefore the P .C. board is also mounted to the inside of the motor. If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning on power supply.
  • Page 89 (5) How to examine whether remote controller is good or bad • Does setting (A/B) of the remote controller selection match with that indoor unit? Operation Check Items There is no beep from Press the START/STOP button. the indoor unit. Considerable main cause The operation lamp of the air conditioner main...
  • Page 90 10-5-2. Wiring Failure (Interconnecting and Serial Signal Wire) (1) Outdoor unit does not operate 1) Is the voltage between of the indoor terminal block varied? Confirm that transmission from indoor to outdoor is correctly performed based upon the following dia- gram.
  • Page 91 10-6. Trouble Diagnosis by Outdoor LED For the outdoor unit, the self-diagnosis is possible by LED (Yel) and four LEDs (Red). D800 D801 D802 D803 D804 • LED (Yel) (D800) and LEDs (Red) (D801 to D804) are provided on the sub-control board under surface of the inverter, and as shown below, they Yellow are checked from the wiring port when removing...

  • Page 92: How To Diagnose Trouble In Outdoor Unit

    10-7. How to Diagnose Trouble in Outdoor Unit 10-7-1. Summarized Inner Diagnosis of Inverter Assembly Diagnosis/Process flowchart Item Summary Contents Preparation Turn “OFF” the power breaker, and remove 3P connector which connects inverter and compressor. Remove connector of compressor. Check •...
  • Page 93 Summary Diagnosis/Process flowchart Item Contents Check Check winding resistance between phases of compres- sor, and resistance between outdoor frames by using a tester. → OK if 10MΩ or more Check • Is not grounded. winding of  • Is not short-circuited →...
  • Page 94 (3) Check procedures Table 10-8-1 Procedure Check point (Symptom) Causes Shut off the power supply and 1. Is the fuse blown? Application of shock voltage. remove the P.C. board assembly Overload by short-circuit of the from the electronic parts base. parts.
  • Page 95 10-8-2. P.C. Board Layout <Top View> <Bottom View> – 95 –...
  • Page 96 <Sensor characteristic table> TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TA, TC, TO, TGa, TGb, TGc, TGd TO : Outdoor temp. sensor TGa : Gas side temp. sensor TGb : Gas side temp. sensor TGc : Gas side temp.
  • Page 97 10-8-3. Indoor Unit (Other Parts) Part name Checking procedure Room temp. (TA) sensor Disconnect the connector and measure the resistance value with tester. Heat exchanger (TC) (Normal temp.) sensor Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC (kΩ) 20.7 12.6 10.0 Remote controller...
  • Page 98 10-8-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For raising pressure, 2. Discharge all four capacitors completely. smoothing) 3. Check that safety valve at the bottom of capacitor is not broken. 4.
  • Page 99 10-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 1. Symptom • Outdoor fan motor does not rotate. • Outdoor fan motor stops within several tens seconds though it started rotating. • Outdoor fan motor rotates or does not rotate according to the position where the fan stopped., etc. Remote control check code “02 : Outdoor block, 1A : Outdoor fan drive system error”...

  • Page 100: How To Replace The Main Parts

    11. HOW TO REPLACE THE MAIN PARTS 11-1. Indoor Unit Part name Procedures Remarks Front panel How to remove the front panel 1) Stop operation of the air conditioner and turn off its main power supply. 2) Pull the air inlet grille toward you to open it and remove the air inlet grille.
  • Page 101 Part name Procedures Remarks Heat exchanger 1) Remove the front panel, electrical part and the horizontal louver following procedure 3. 2) Remove the pipe holder at the rear side of main unit. 3) Remove the 2 screws on the heat exchanger at the base bearing.
  • Page 102 11-2. Microcomputer Part name Procedure Remarks  Common 1) Turn the power supply off to stop the operation of Replace the thermal fuse, terminal procedure air-conditioner. block, microcomputer ass’y and the P .C. board ass’y. 2) Remove the front panel. •...
  • Page 103 Part name Procedure Remarks ‚ Inverter 1. Detachment assembly  1) Perform work from item 1) to 5) of Inverter cover 2) Remove screw (ST1T Ø4 x 10 1 pc.) of the upper P .C. board left part of the inverter cover. (Soldered surface) •...
  • Page 104 Part name Procedure Remarks ƒ Control 1) Disconnect lead wires and connectors connected from board the control board assembly to other parts. assembly 1. Lead wires • Connection with terminal block : 10 wires (Red, Orange, Pink, Yellow, CN601~ Two black wires, Four white wires CN608 •...
  • Page 105 Part name Procedure Remarks „  Fan motor 1) Perform work from item 1) to 5), 7) of 2) Remove the flange nut fixing the fan motor and the propeller fan. • Flange nut is loosened by turning clockwise. (To tighten the flange nut, turn counterclock-wise.) 3) Remove the propeller fan.
  • Page 106 Part name Procedure Remarks ‡ Pulse 1. Detachment modulat-  ‚ 1) Perform work of item Positioning bracket ing valve at coil side PMV coil 2) Release the coil from the notch by turning it, and remove coil coil from the pulse modulating valve. Lead wire take-out port 2.
  • Page 107 Part name Procedure Remarks ‰ Replacement of tempera- 1) Cut the sensor 100 mm longer than old ture sensor for servicing one. Cutting here only Thermal 2) Cut the protective tube after pulling out Connector sensor part Common service parts of it (200 mm).
  • Page 108 <MCC-1359> – 108 –...
  • Page 109 <MCC-818> – 109 –...

  • Page 110: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST 12-1. Indoor Unit (1) RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3 RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 Location Part No. Location Description Part No. Description 43T69330 P .C. Board Ass’y, 43T69319 Temperature Sensor MCC-867 (RAS-M10UKV-E3) TC, 10kΩ, 25°C 43T69331 P .C. Board Ass’y,...
  • Page 111 Indoor Unit RAS-M10UKV-E3, RAS-M13UKV-E3, RAS-M16UKV-E3, RAS-M10UKCV-E3, RAS-M13UKCV-E3, RAS-M16UKCV-E3 Electric Parts Assembly Location Location Part No. Description Part No. Description 43T00391 Front Panel Assy 43T49006 Holder For Plate 43T09326 Inlet Grille Assy 43T79302 Guide Drain 43T03302 Back body Assy 43T22002 Asm M Bearing...
  • Page 112 12.2. Outdoor Unit RAS-4M27YAV-E/ RAS-4M27YACV-E/ RAS-3M26YAV-E 11, 42 32 33 16, 19, 22 Location Location Part No. Description Part No. Description 43005481 Cabinet, Back, Ass’y 43046385 Valve, Pulse, Modulating, SKV-18D26 43005490 Cabinet, Side, Ass’y 43046404 Coil, PMV, DKV-MOZS770B0 43005480 Cabinet, Front, Ass’y 43049740 Holder, Sensor 43005491 Panel, Upper 43019822 Holder, Sensor, SUS...
  • Page 113 12.3. P.C. Board Layout RAS-4M27YAV-E TO Sensor TE Sensor TS Sensor TD Sensor TGa Sensor TGb Sensor TGc Sensor TGd Sensor Location Location Part No. Description Part No. Description 43050382 Sensor, TC (F6) 43162042 Base, P .C. Board, ABS 4306A060 Terminal Block, 3P 43050398 Sensor, TG (F4) 43160469 Terminal Block, 6P 4306S267 P.C.
  • Page 114 RAS-4M27YACV-E TO Sensor TGa Sensor TGb Sensor TGc Sensor TGd Sensor TD Sensor Location Location Part No. Part No. Description Description 43162042 Base, P .C. Board, ABS 43050382 Sensor, TC (F6) 4306A060 Terminal Block, 3P 4306S269 P .C. Board Ass’y, MCC-818 (4M27YACV-E) 43160469 Terminal Block, 6P AC 250V, 20A...
  • Page 115 RAS-3M26YAV-E TO Sensor TE Sensor TS Sensor TD Sensor TGa Sensor TGb Sensor TGc Sensor Location Location Part No. Part No. Description Description 43162042 Base, P .C. Board, ABS 43050382 Sensor, TC (F6) 4306A060 Terminal Block, 3P 43050398 Sensor, TG (F4) 43160469 Terminal Block, 6P 4306S268 P.C.
  • Page 116 TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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