Toshiba RAS-07YKX Service Manual

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SERVICE MANUAL

AIR-CONDITIONER

RAS-10YK-ES / RAS-10YA-ES

RAS-10YK-HX / RAS-10YA-HX

SPLIT WALL TYPE

RAS-07YKX / RAS-07YAX

RAS-10YKX / RAS-10YAX

RAS-11YKX / RAS-11YAX

RAS-07YK-E / RAS-07YA-E

RAS-10YK-E / RAS-10YA-E

RAS-07YK-ES/RAS-07YA-ES

RAS-07YKX-T / RAS-07YAX-T

RAS-10YKX-T / RAS-10YAX-T

FILE NO. DAS-SM-00-001

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Summary of Contents for Toshiba RAS-07YKX

Page 1 FILE NO. DAS-SM-00-001 SERVICE MANUAL AIR-CONDITIONER SPLIT WALL TYPE RAS-07YKX / RAS-07YAX RAS-10YKX / RAS-10YAX RAS-11YKX / RAS-11YAX RAS-07YK-E / RAS-07YA-E RAS-10YK-E / RAS-10YA-E RAS-07YK-ES/RAS-07YA-ES RAS-10YK-ES / RAS-10YA-ES RAS-10YK-HX / RAS-10YA-HX RAS-07YKX-T / RAS-07YAX-T RAS-10YKX-T / RAS-10YAX-T...
Page 2: Table Of Contents
CONTENTS 1. SPECIFICATIONS ..................3 2. CONSTRUCTION VIEWS ................ 8 3. WIRING DIAGRAM ................. 10 4. SPECIFICATIONS OF ELECTRICAL PARTS ........11 5. REFRIGERANT CYCLE DIAGRAM ............13 6. CONTROL BLOCK DIAGRAM .............. 14 7. OPERATION DESCRIPTIONS ..............15 8. INSTALLATION PROCEDURE ............... 20 9.
Page 3: Specifications
1. SPECIFICATIONS RAS-07YKX/07YAX, RAS-07YK-E/07YA-E, RAS-07YKX-T/07YAX-T MODEL RAS-07YK-E/YA-E RAS-07YKX/YAX RAS-07YKX-T/YAX-T ITEM Cooling 220V–240V 220V Capacity 2,10–2,20 2,10 Phase Single Power source 220–240 Power consumption 0,60–0,65 0,60 Power factor 96–94 220V–240V 220V Running current Indoor/Outdoor 0,15/2,70–0,15/2,72 0,15/2,70 Starting current Moisture removal lit/h...
Page 4 RAS-10YKX/10YAX, RAS-11YKX/11YAX RAS-10YK-E/10YA-E, RAS-10YK-HX/10YA-HX RAS-10YK-E/10YA-E MODEL RAS-10YKX/10YAX RAS-11YKX/11YAX RAS-10YK-HX/10YA-HX ITEM Cooling 220V–240V Capacity 2,70–2,70 Phase Single Power source 220–240 Power consumption 0,80–0,85 Power factor 96–94 220V–240V Running current Indoor/Outdoor 0,15/3,65–0,15/3,60 Starting current Moisture removal lit/h Indoor (H/M/L) dB (A) 44 / 36 / 29 Noise (SPL at 1 meter) Outdoor (220–240V)
Page 5 RAS-10YK-ES / RAS-10YA-ES RAS-10YKX-T / RAS-10YAX-T RAS-10YK-ES/10YA-ES RAS-10YKX-T/10YAX-T MODEL ITEM Cooling 220V–240V 220V Capacity 2,65–2,70 2,70 Phase Single Power source 220–240 Power consumption 0,80–0,85 0,80 Power factor 96–94 220V–240V 220V Running current Indoor/Outdoor 0,15/3,65 Starting current Moisture removal lit/h Indoor (H/M/L) dB (A) 44 / 36 / 29 Noise...
Page 7 Note : • Capacity is based on the following temperature conditions. CONDITION COOLING TEMPERATURE (DB) 27 °C Indoor unit inlet air temperature (WB) 19 °C (DB) 35 °C Outdoor unit inlet air temperature (WB) 24 °C Notes : CHARGELESS • No additional refrigerant required. •...
Page 8: Construction Views
2.CONSTRUCTION VIEWS 2-1.Indoor Unit Heat exchanger Air inlet Air filter 1800 Air outlet Knock out system 07YK-E, 07YK-ES, 10YK-E 10YK-ES: Without power cord 07YKX, 10YKX, 11YKX 07YKX-T, 10YKX-T : With power cord 10YK-HX : With power cord & plug Front panel Back body Hanger Drain hose (0,54m)
Page 9 Ø6 Hole Ø11x14 Hole 8-Ø6 Holes (For fixing the outdoor unit) Handle 4-Ø11x14 Long holes (For anchor bolt Ø8-Ø10) Fan guard ø420 TOSHIBA Electric parts cover Access for charging View Inlet port 600 or more Inlet port 100 or more...
Page 10: Wiring Diagram
3. WIRING DIAGRAM LOUVER MOTOR Datail A INFRARED RAYS RECEIVE RAS-07YKX/10YKX/11YKX RAS-07YK-E/10YK-E AND INDICATION PARTS RAS-07YKX-T/10YKX-T/10YK-HX RAS-07YK-ES/10YK-ES CN25 RAS-10YK-HX THERMAL THERMAL FUSE FUSE 77°C x 1 77°C x 2 Power cord with plug CN04 CN07 CN13 SG01 RAS-07YK-E GRN&YEL VARISTOR...
Page 11: Specifications Of Electrical Parts
4. SPECIFICATIONS OF ELECTRICAL PARTS 4-1. Indoor Unit PARTS NAME TYPE SPECIFICATIONS Output (Rated) 20W, 6poles, 1phase, 220–240V, 50Hz Fan motor (for indoor) MMF-240-20-4A Red-Black White-Black Winding resistance ( W ) (at 20°C) 220,8 324,3 10k W at 25°C Thermo. sensor (TA-sensor) (Microprocessor) Switching transformer SWT-47...
Page 14: Control Block Diagram
Fan Speed Selection Louver Noise Filter Relay Driver Louver Driver Motor ON TIMER Setting OFF TIMER Setting Relay RY01 Louver AUTO Swing Relay Louver Direction Setting RY02 ECONO. AC 220-240V 50Hz Compressor Outdoor Fan Motor AC 220V 50Hz (RAS-07YKX-T, 10YKX-T only)
Page 15: Operation Descriptions
550) (continuous) temp. RY01 For model : RAS-07YKX, RAS-07YK-E, RAS-07YK-ES, RAS-07YKX-T Fig. 7-2-2 (3) Once the setting is made, the operation mode is memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing the START/STOP button.
Page 16 7-2-1. Louver Control 7-3. DRY Operation (1) Vertical air flow louvers (MODE of the remote control : DRY) Positions of vertical air flow louvers are automatically (1) Compressor, outdoor fan and operation display controlled according to the operation status (COOL, are controlled as shown in Fig.
Page 17 7-4. AUTO Operation 7-4-1. Temporary Auto When the TEMPORARY button is pushed (1 sec), (MODE of the remote control : AUTO) the set temperature is fixed at 24°C and controlled in (1) One of the 2 modes, Cooling or Dry is selected accordance with the chart shown in Fig.
Page 18 7-7. Auto Restart Function 7-7-1. How to Set the Auto Restart To set the Auto Restart function, proceed as follows: This unit is equipped with an Automatic restarting Access the TEMPORARY button located in the lower function which allows the unit to restart and resume right hand corner beneath the hinged front panel of the set operating conditions in the event of a supply the indoor unit (please refer to section on PARTS...
Page 19 7-7-2. 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 control after the main supply is turned off. Cancellation is carried out: •...
Page 20: Installation Procedure
8. INSTALLATION PROCEDURE 8-1. Safety Cautions For general public use Power supply cord of parts of appliance for Outdoor use shall be more than polychloroprene sheathed flexible cord (design H05 RN-F), or cord designation 245 IEC 57. CAUTION TO DISCONNECT THE APPLIANCE FROM THE MAINS SUPPLY. This appliance must be connected to the mains by means of a circuit breaker or a switch with a contact separation of at least 3 mm.
Page 21 And make sure the equipment to be earthed. • Appliance shall be installed in accordance with national wiring requlations. 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 22 8-2. Installation Diagram of Indoor and Outdoor Units For installation of the indoor unit, use the paper pattern on the back. For the rear left and left piping Clip anchor Wall Hook Hook Front cabinet 1 Installation Insert the cushion between plate Front panel the indoor unit and wall,...
Page 23 8-3. Installation <Anchor bolt arrangement of outdoor unit> 8-3-1. Optional Parts 600mm Air inlet Part Parts name Q’ty code Refrigerant piping Each Liquid side : ø6,35 mm Gas side : ø9,52 mm Pipe insulating material (polyethylene foam, 6 mm thickness) Air outlet Each Putty, PVC tapes...
Page 24 8-4. Indoor Unit 8-4-1. Cutting a Hole and Mounting Installation Plate K Installation place <Cutting a hole> • A place which provides the spaces around the indoor unit as shown in the diagram in section 8-2. When installing the refrigerant pipes from the rear. •...
Page 25 5 Mounting screw Ø4 x 25 supply cord and plug must be used. NOTE : • Perform wiring works so as to allow a generous Fig. 8-4-4 wiring capacity. RAS-10YKX RAS-11YKX RAS-07YKX MODEL RAS-07YK-E RAS-10YK-E RAS-07YKX-T RAS-10YKX-T RAS-10YK-ES RAS-07YK-ES RAS-10YK-HX...
Page 26 8-4-3. Wiring Connection Taking out the power cord WARNING To plug the cable in the plug receptacle, take the following precaution. Slitted portion THIS APPLIANCE MUST BE EARTHED. IMPORTANT • Cut off the slitted portion in the side face of the rear panel to take out the power cord.
Page 27 <How to connect the connecting cable> <How to install the front cabinet on the indoor unit> Wiring of the connecting cable can be carried out Install the front cabinet through the opposite order of without removing of the front panel. “How to remove the front cabinet”.
Page 28 <Left-hand connection with piping> 8-4-5. Indoor Unit Installation Bend the connecting pipe so that it is laid within 43 (1) Pass the pipe through the hole in the wall, and mm above the wall surface. If the connecting pipe is hook the indoor unit on the installation plate at laid exceeding 43 mm above the wall surface, the the upper hooks.
Page 29 8-4-6. Drainage 8-5. Outdoor Unit (1) Run the drain hose sloping downwards. Installation place NOTE : • A place which provides the spaces around the outdoor unit as shown in the diagram in page 19. • Hole should be made at a slight downward slant to the outdoor side.
Page 30 8-5-1. Refrigerant Piping Connection 8-5-2. Vacuum Pumping <Flaring> INFORMATION (1) Cut the pipe with a pipe cutter. In order to prevent any other refrigerant from being charged accidentally, each port of the manifold has been changed in shape. Obliquity Roughness Warp 90˚...
Page 31 8-5-3. Wiring Connection Manifold valve High pressure Pressure gage (1) Remove the electric parts cover from the outdoor side handle unit. (1 screw) Low pressure side handle (2) Connect the connecting cable to the terminals as Charge hose (A) identified with their respective matched numbers on the terminal block of indoor and outdoor units.
Page 32 8-6. Others 8-6-3. Auto Restart Setting This product is designed so that, after a power 8-6-1. Gas Leak Test failure, it can restart automatically in the same operating mode as before the power failure. Flare nut connections (indoor unit) INFORMATION The product was shipped with Auto Restart function in the off position.
Page 33: Troubleshooting Chart
9-1. What to be Prechecked First 9-1-1. Power Supply Voltage The line voltage must be AC 220–240V (220V for RAS-07YKX-T, RAS-10YKX-T). If the line voltage is not within this range, this air conditioner may not work normally. 9-1-2. Incorrect Cable Connection between Indoor and Outdoor Units The indoor unit is connected to the outdoor unit with 3 cables.
Page 34 9-2. Primary Judgement of Trouble Sources 9-2-1. Role of Indoor Unit Controller The indoor unit controller receives the operation commands from the remote control and assumes the following functions. • Measurement of the draft air temperature of the indoor heat exchanger by using the thermo sensor (TA). •...
Page 35 (2) Self-diagnosis with remote control With the indoor unit control, self-diagnosis of protective circuit action can be done by turning the remote control operation into service mode, operating the remote control, observing the remote control indicators and checking whether TIMER lamp blinks (5 Hz). [ METHOD ] Push the [CHK] button with a thin tip of pencil or others.
Page 36 9-3. Troubleshooting Flowcharts 9-3-1. Power can not be Turned on (No Operation at All) <Preliminary checks> Operation (1) Is the supply voltage normal? Check Items (2) Is the connection to the AC output OK.? Main cause Shut off the power supply from AC outlet once and Countermeasure turn it on after 5 seconds.
Page 37 IC31 or IC30 is failure. 1 - 2 ? Is cable connection Correct cabling between between indoor and outdoor indoor and outdoor units. units correct? Check items as following procedure in 9-3-4, 9-3-5, 9-3-6. for model RAS-07YKX-T, RAS-10YKX-T – 37 –...
Page 38 Is the overload relay normal? Does the compressor start? Compressor is defective. Compressor starts but it stops after a while? Is the gas quantity normal? Gas shortage (Gas leakage) (Check the pressure) Compressor is defective for model RAS-07YKX-T, RAS-10YKX-T – 38 –...
Page 39 Is the outdoor fan motor winding normal? Outdoor fan motor is defective. (Check the winding resistance) Capacitor for outdoor Is the capacitor for compressor normal? fan motor is defective. Outdoor fan motor is defective. for model RAS-07YKX-T, RAS-10YKX-T – 39 –...
Page 40 9-3-6. Only the Indoor Fan does not Operate < Check procedure > Shut off the power supply once. Turn the power supply. Does the fan Replace the P.C. board. stop in no operating Control P.C. board is defective. status? Start the operation with low fan setting in cool operation.
Page 41 9-4. How to Check the Remote Control (Including the Indoor P.C. Board) There is no beep from the indoor unit. Push the START/STOP button. The operation lamp of the air conditioner main unit does not light. Does the transmission indicator blink? Short-circuit the metal terminal at the side of the battery compartment...
Page 42 9-4-1. How to Check the P.C. Board (2) Inspection procedures 1) When a P .C. board is judged to be defective, (1) Operating precautions check for disconnection, burning, or discolora- 1) When removing the front panel or the P .C. tion of the copper foil pattern or this P .C.
Page 43 (The key operation is accepted.) 2. P .C. board is defective. Start the operation with the following 2. The motor rotates, but it vibrates too condition. much. 1. Operation [Cooling] 2. Airflow [High fan] 3. Continuous operation for odel RAS-07YKX-T, RAS-10YKX-T – 43 –...
Page 44 9-4-2. P.C. Board Layout Top View Bottom View – 44 –...
Page 45 Table 9-4-2 Approximate value of the sensor (thermistor) resistance (TA, TC) (= kΩ) Temperature 0°C 10°C 20°C 25°C 30°C Sensor Themo. Sensor 35,8 20,7 12,6 10,0 7,92 9-4-3. How to Reduce the Operation Time of TEMP. the Anti-Restart Timer (1) Set the operation mode, temperature, and air START/STOP flow rate to be applied with the timer short mode.
Page 46: Part Replacement
10. PART REPLACEMENT 10-1. Indoor Unit Part name Procedure Remarks Front panel 1) After stopping the operation of the air conditioner, be sure to turn off the circuit breaker or disconnect the power plug from the AC wall socket. 2) Open the screw caps and remove the two screws fixing the front panel.
Page 47 Part name Procedure Remarks Horizontal grille 1) Perform the process Note: 2) Remove the screw fixing the louver motor, and The horizontal remove the louver motor. grille can not be 3) Remove the shaft of the horizontal grille from the removed without drain-pan.
Page 49 10-3. Outdoor Unit Part name Procedure Remarks Common 1) Stop the operation of air-conditioner, and disconnect procedure the power cord from the AC supply. 2) Remove Electric parts cover. (2- ST1T Ø4 x 10 l) (1-ST1T Ø4 x 10 l : 07YA-ES & 10YA-ES only) Remove 7-ST1T Ø4 x 10 3) Remove the cord clamp (2- ST2T Ø4 x 12 l) and...
Page 50: Exploded Views And Parts List
11. EXPLODED VIEWS AND PARTS LIST 11-1. Indoor Unit (1) RAS-07YK-E, RAS-07YK-ES, RAS-10YK-E, RAS-10YK-ES Location Part Location Part Description Description 43T60002 Base, Terminal 43T69055 P .C. Board Assembly, 3P , AC 300V, 20A MCC-798 (07YK-E, 07YK-ES) 43T69004 Sensor, Heat Exchanger 43T69054 P .C.
Page 51 RAS-07YKX, RAS-07YKX-T, RAS-10YKX, RAS-10YKX-T, RAS-11YKX, RAS-10YK-HX Location Part Location Part Description Description 43T60002 Base, Terminal 43T69054 P .C. Board Assembly, 3P , AC 300V, 20A MCC-798 (10YKX, 10YKX-T, 43T69004 Sensor, Heat Exchanger 10YK-HX, 11YKX) 10kΩ, 25°C 43T60042 Cord, Power (without plug)
Page 52 11-1. Indoor Unit (2) RAS-07YK-E, RAS-10YK-E, RAS-10YK-ES Location Part Location Part Description Description 43T00301 Panel Assembly, Front (07YK-E) 43T47005 Pipe, Suction (10YK-E, 10YK-ES) 43T00302 Panel Assembly, Front (10YK-E) 43T49007 Pipe, Shield 43T00304 Panel Assembly, Front (10YK-ES) 43T19003 Holder, Sensor 43T00044 Grille, Suction 43T49003 Spring (10YK-E, 10YK-ES) 43T80001 Air Filter (L) 43T49028 Plate, EVA-SEAL...
Page 53 RAS-07YK-ES Location Part Location Part Description Description 43T00324 Panel Assembly, Front (07YK-ES) 43T20007 Fan, Cross Flow 43T00044 Grille, Suction 43T22002 Bearing 43T80001 Air Filter (L) 43T39003 Base, Bearing 43T80002 Air Filter (R) 43T03001 Plate, Rear 43T07021 Cap, Screw (L) 43T07002 Holder, Pipe 43T07020 Cap, Screw (R) 43T82001 Plate, Installation 43T08331 Panel, Control (07YK-ES)
Page 54 RAS-07YKX, RAS-07YKX-T, RAS-10YKX, RAS-10YKX-T, RAS-11YKX, RAS-10YK-HX Location Part Location Part Description Description 43T00310 Panel Assembly, Front (07YKX) 43T47005 Pipe, Suction 43T00311 Panel Assembly, Front (07YKX-T) (10YKX, 10YK-HX, 11YKX) 43T00312 Panel Assembly, Front (10YKX) 43T47304 Pipe, Suction (10YKX-T) 43T00313 Panel Assembly, Front (10YKX-T)
Page 55 11-2. Outdoor Unit RAS-07YA-E, RAS-10YA-E, RAS-10YA-HX 8, 9 10, 11 13 2 15, 23 7 : CAPILLARY TUBE 23 : NUT, FLAT WASHER (07YA-E) 24 : DRYER (10YA-E, 10YA-HX) Location Part Location Part Description Description 43T19001 Guard, Fan 43T19002 Stopper, Guard 43T20001 Fan, Propeller 43T63001 Holder, OL-Relay (07YA-E) 43005037 Cabinet, Front...
Page 57 RAS-10YA-ES 8, 9 10, 11 13 2 15, 22 7 : CAPILLARY TUBE 21 : DRYER Location Part Location Part Description Description 43T19001 Guard, Fan 43021001 Motor, Fan, UE6-21SJ5P 43T20001 Fan, Propeller 43T47001 Nut, Flange 43005037 Cabinet, Front 43T19005 Handle 43T43302 Condenser 43T49001 Rubber, Cushion 43062193 Cover, E-Parts...
Page 58 RAS-07YAX, RAS-07YAX-T, RAS-10YAX, RAS-10YAX-T, RAS-11YAX 8, 9 10, 11 13 2 15, 23 7 : CAPILLARY TUBE 24 : DRYER (10YAX, 10YAX-E, 11YAX) Location Part Location Part Description Description 43T19001 Guard, Fan 43T19002 Stopper, Guard 43T20001 Fan, Propeller 43T63001 Holder, OL-Relay (07YAX, 07YAX-T, 10YAX) 43005037 Cabinet, Front 43T54302 Relay, Over Load...
Page 59 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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