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Toshiba RAS-10N3ACV Series, Service Manual

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Toshiba RAS-10N3ACV Series Service Manual Download Page 82

FILE NO. SVM-07008

– 81 –

1) Turn the power supply off to stop the operation

of air conditioner.

2) Remove the front panel.

•

Remove the 4 fixing screws.

3) Remove the electrical part base.

1

Common
procedure

12-2. Microcomputer

Replace the thermal fuse, terminal
block, microcomputer ass’y and the
P.C. board ass’y

<P.C. board layout> 

No.

Part name

Procedures

Remarks

Component side

Summary of Contents for RAS-10N3ACV Series

Page 1: ...FILE NO SVM 07008 1 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE Revised May 2007 RAS 10SKV E RAS 10SAV E RAS 10SKV A RAS 10SAV A ...

Page 2: ...5 WIRING DIAGRAM 16 6 SPECIFICATIONS OF ELECTRICAL PARTS 18 7 REFRIGERANT CYCLE DIAGRAM 20 8 CONTROL BLOCK DIAGRAM 22 9 OPERATION DESCRIPTION 24 10 INSTALLATION PROCEDURE 47 11 HOW TO DIAGNOSE THE TROUBLE 59 12 HOW TO REPLACE THE MAIN PARTS 79 13 EXPLODED VIEWS AND PARTS LIST 89 1 FILE NO SVM 07008 ...

Page 3: ...nd installation tools are different from those used for the conventional refrigerant units Accordingly special tools are required for the new refrigerant R410A units For connecting pipes use new and clean piping materials with high pressure fittings made for R410A only so that water and or dust does not enter Moreover do not use the existing piping because there are some problems with pressure fit...

Page 4: ... electrician in accordance with the Installation Manual Make sure the air conditioner uses an exclusive circuit An insufficient circuit capacity or inappropriate installation may cause fire When wiring use the specified cables and connect the terminals securely to prevent external forces applied to the cable from affecting the terminals Be sure to provide grounding Do not connect ground wires to g...

Page 5: ... RAS 10SAV A Dimension Height mm 530 Width mm 660 Depth mm 240 Net weight kg 29 Compressor Motor output W 750 Type Single rotary type with DC inverter variable speed control Model DA89X1C 23FZ Fan motor output W 20 Air flow rate Cooling Heating m3 min 27 27 Piping Type Flare connection connection Indoor unit Liquid side mm 6 35 Gas side mm 9 52 Outdoor unit Liquid side mm 6 35 Gas side mm 9 52 Max...

Page 6: ... DB 35o C Air Flow High Pip Length 5m Voltage 230V Conditions Indoor DB 20o C Outdoor DB 7o C WB 6o C Air Flow High Pip Length 5m Voltage 230V 50 55 60 65 70 75 80 85 90 95 100 105 32 33 34 35 36 37 38 39 40 41 42 43 Cooling Capacity ratio Outside Temperature o C 0 20 40 60 80 100 120 10 5 0 5 10 Heating Capacity ratio Outside Temperature ºC Conditions Indoor DB 27o C WB 19o C Indoor Air Flow High...

Page 7: ... in the refrig eration cycle may become abnormally high so that a rupture or personal injury may be caused 5 After completion of installation work check to make sure that there is no refrigeration gas leakage If the refrigerant gas leaks into the room coming into contact with fire in the fan driven heater space heater etc a poisonous gas may occur 6 When an air conditioning system charged with a l...

Page 8: ...et joints Nominal diameter 1 4 3 8 1 2 5 8 Reference outer diameter of copper pipe jointed mm 6 35 9 52 12 70 15 88 Minimum joint thickness mm 0 50 0 60 0 70 0 80 3 2 2 Processing of Piping Materials When performing the refrigerant piping installation care should be taken to ensure that water or dust does not enter the pipe interior that no other oil than lubricating oils used in the installed air...

Page 9: ... to 0 5 0 to 0 5 0 to 0 5 0 to 0 5 Conventional flare tool Clutch type Wing nut type 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 1 5 to 2 0 1 0 to 1 5 2 0 to 2 5 1 0 to 1 5 2 0 to 2 5 Table 3 2 4 Dimensions related to flare processing for R22 Nominal diameter 1 4 3 8 1 2 5 8 Outer diameter mm 6 35 9 52 12 70 15 88 Thickness mm 0 8 0 8 0 8 1 0 A mm Flare tool for R22 clutch type 0 to 0 5 0 to 0 5 0 to 0 5 0 t...

Page 10: ...torque for R410A is the same as that for conventional R22 Incidentally when the torque is weak the gas leakage may occur When it is strong the flare nut may crack and may be made non removable When choosing the tighten ing torque comply with values designated by manufacturers Table 3 2 7 shows reference values NOTE When applying oil to the flare surface be sure to use oil designated by the manufac...

Page 11: ...ant charging Refrigerant cylinder Leakage detector Charging cylinder Usage Pipe flaring Flaring by conventional flare tool Connection of flare nut Evacuating refrigerant charge run check etc Vacuum evacuating Refrigerant charge Refrigerant charge Gas leakage check Refrigerant charge R410A air water heat pump installation Existence of new equipment for R410A Yes Yes Yes Yes Yes Yes Yes Yes Note 2 W...

Page 12: ...onnecting port of the electronic balance and charge liquid refrigerant Water heat exchanger unit Outdoor unit Opened Opened Refrigerant cylinder with siphon Check valve Open close valve for charging Electronic balance for refrigerant charging Opened Closed Service port 3 4 Recharging of Refrigerant When it is necessary to recharge refrigerant charge the specified amount of new refrigerant accordin...

Page 13: ... of silver and copper It is used to join iron copper or copper alloy and is relatively expensive though it excels in solderability 2 Phosphor bronze brazing filler Phosphor bronze brazing filler is generally used to join copper or copper alloy 3 Low temperature brazing filler Low temperature brazing filler is generally called solder and is an alloy of tin and lead Since it is weak in adhesive stre...

Page 14: ... flux which does not contain chlorine 3 When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water 4 Remove the flux after brazing 3 5 3 Brazing As brazing work requires sophisticated techniques experiences based upon a theoretical knowledge it must be performed by a person qualified In order to prevent the oxide film from occurring in the pip...

Page 15: ...60 Air inlet Air filter Heat exchanger Air outlet 740 250 60 55 50 50 55 60 Hanger Center line Hanger 8 Hanger Installation plate outline 10 For stud bold For stud bold 6 145 145 215 235 215 605 19 157 Connecting pipe 0 37m 6 35 Flare Drain hose 0 5m Hanger Connecting pipe 0 37m Flare 9 52 500 105 135 Wireless remote control 56 FILE NO SVM 07008 ...

Page 16: ...FILE NO SVM 07008 15 4 2 Outdoor Unit C L C L ...

Page 17: ... 16 FILE NO SVM 07008 5 WIRING DIAGRAM 5 1 Indoor Unit ...

Page 18: ...FILE NO SVM 07008 17 5 2 Outdoor Unit ...

Page 19: ...Ω at 25 C 3 Micro power module T101 µRM1260V 4 Microcontroller unit IC81 5 Heat exchanger sensor 10 kΩ at 25 C TC sensor 6 Line filter L01 SS11V R06270 27 mH AC 0 6A 7 Diode D01 D02 D03 and D04 S5688J 8 Capacitor C03 9 Fuse F01 FJL250V3 15A 3 15A 250 V 10 Regulator IC IC12 S7805PIC 5VDC 0 5A 11 Varistor R21 TNR10V471K T8 470V 12 Louver motor DC 12V EKMH401VSN470MP20S 47µF 400V µPD780076GK 703 9ET ...

Page 20: ...sor 7 Heat exchanger temp Inverter attached 10kΩ 25 C sensor TE sensor 9 JX0 6B 20A AC250V Terminal block 6P 10 11 Fuse For protection of switching power source 3 15A AC250V For protection of inverter input overcurrent 25A AC250V 12 Electrolytic capacitor LLQ2G501KHUBTF 500µF DC 400 V x 3 pieces 13 Compressor thermo PW 2AL OFF 125 4 C ON 90 5 C Rectifier 14 Fan control relay D15XB60 4001 15A 600V ...

Page 21: ...xchanger Cross flow fan Deoxidized copper pipe Outer dia 6 35mm Thickness 0 8mm Sectional shape of heat insulator Allowable height difference 10m Allowable pipe length P Pressure measurement Gauge attaching port Vacuum pump connecting port TD 4 way valve STF 0108Z Compressor DA89X1C 23FZ T2 Outdoor heat exchanger Temp measurement Propeller fan Refrigerant amount 0 63kg OUTDOOR UNIT Muffler Muffler...

Page 22: ...dard Indoor Outdoor Compressor RAS pressure fan mode fan mode revolution Indoor Outdoor P MPa T1 C T2 C rps 20 7 6 10SKV E 10SKV A Tempeature Heat exchanger condition C pipe temp NOTES 1 Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent Thermistor themometer 2 Connecting piping condition 5 m Heating FILE NO SVM 07008 0 9 to 1 1 9 to 11 47 to 49 High Hig...

Page 23: ...t Restart for Compressor Motor Revolution Control Timer Serial Signal Communication Processing Temperature Processing Functions M C U Indoor Unit Control Panel From Outdoor Unit Remote Control Heat Exchanger Sensor Temperature Sensor Infrared Rays Signal Receiver Infrared Rays Initiallizing Circuit Clock Frequency Oscillator Circuit Louver Motor 36 7KHz Power Supply Circuit Noise Filter Indoor Fan...

Page 24: ...etect circuit Relay Fan motor 4way Valve Relay High power factor correction circuit 1 PWM synthesis function 2 Input current release control 3 IGBT over current detect control 4 Outdoor fan control 5 High power factor correction control 6 Signal communication to indoor unit M C U M C U Inverter DC AC Compressor Discharge temp sensor Outdoor air temp sensor Heat Exchanger temp sensor MICRO COMPUTER...

Page 25: ...followed to judgment of serial signal from indoor side Detection of inverter input current and current release operation Over current detection and prevention operation to IGBT module Compressor stop function Compressor and outdoor fan stop function when serial signal is off when the serial signal does not reach the board assembly of outdoor control by trouble of the signal system Transferring of ...

Page 26: ...CO operation 34 9 Temporary operation 35 10 Discharge temperature control 35 11 Self Cleaning function 36 12 Selt Cleaning function release 37 13 Remote A or B selection 38 9 3 Auto Restart Function 41 9 3 1 How to Set the Auto Restart Function 41 9 3 2 How to Cancel the Auto Restart Function 42 9 3 3 Power Failure During Timer Operation 43 9 4 Remote Controller and Its Fuctions 44 9 4 1 Parts Nam...

Page 27: ...F Air conditioner Operation select COOL HEAT AUTO DRY Temperature setup Air direction Swing Air volume select AUTO LOW LOW MED MED HIGH ECO ON timer setup OFF timer setup Hi POWER Indoor unit control Command signal generating function of indoor unit operation Calculation function temperature calculation Activation compensation function of indoor fan Cold draft preventive function Timer function In...

Page 28: ...peed is controlled by the previous operation mode 4 DRY operation DRY operation is performed according to the difference between room temperature and the setup temperature as shown below In DRY operation fan speed is controlled in order to prevent lowering of the room temperature and to avoid air flow from blowing directly to persons 1 Detects the room temperature Ta when the DRY operation started...

Page 29: ...wn in Fig 1 2 When setting the fan speed to AUTO on the remote controller revolution of the fan motor is controlled to the fan speed level shown in Fig 2 and Table 1 according to the setup tempera ture room temperature and heat exchanger temperature Fig 1 Fig 2 2 5 Ta C 2 0 1 5 1 0 0 5 Tsc a b c d e M WB 3 4 5 L W6 Air volume AUTO L L M M H W6 L M 2 W9 M H 2 WC Indication Fan speed Fan speed setup...

Page 30: ... c 1 0 d 1 5 e 2 0 f 2 5 g 5 0 5 5 L W9 M WD 1 2 3 H WE H WE Line approximate H and SUL with Tc SUL W2 Stop 46 46 Tc 34 45 45 33 33 33 21 32 32 20 A 4 A 4 A 4 A 4 A 4 A 4 Fan speed MANUAL in starting Fan speed AUTO in stability Fan speed AUTO in starting L L M M H W8 L M 2 WA M H 2 WE Indication Fan speed Fan speed setup HEAT ON AUTO YES NO MANUAL TC 42 C Min air flow rate control Tc 52 51 42 41 L...

Page 31: ...the compressor speed so that electric power of the compressor drive circuit does not exceed the specified value 4 Current release control Set temp Ts Room temp Ta Correction of Hz signal Outdoor temp To Setup of current release point Capacity control continues Detection of electromotive force of compressor motor winding Detection of motor speed and rotor position Inverter output change Commutation...

Page 32: ...pressor speed is kept Q zone When temperature of the indoor heat exchanger drops in the range from 46 C to under 55 C the compressor speed is kept Q zone 2 When temperature of the indoor heat exchanger rises to 55 C or higher the compressor speed is reduced P zone 3 When temperature of the indoor heat exchanger does not rise to 50 C or when it drops below to 46 C the capacity control operation ret...

Page 33: ... lower stop the indoor fan Finish of defrost operation Returning conditions from defrost operation to heating operation 1 Temperature of outdoor heat exchanger rises to 8 C or higher 2 Temperature of outdoor heat exchanger is kept at 5 C or higher for 80 seconds 3 Defrost operation continues for 15 minutes Returning from defrost operation 1 Stop operation of the compressor for approx 50 seconds 2 ...

Page 34: ...ither upper or lower limit position swing operation is performed in width 35 from the limit which the stop position exceeded 3 Swing 2 Louver position in heating operation 2 Air direction adjustment The position is automatically controlled according to the operation The set louver position is stored in memory by the microcomputer The angle of the louver is indicated as the louver closes fully is 0...

Page 35: ...COOL min 30 minutes A B C A B C Time Compressor speed 0Hz A zone aHz B zone a to cHz C zone cHz 0 0 5 1 0 1 5 2 0 2 5 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 Room temp Set temp 3 5 3 0 2 5 1 5 1 0 TSC 1 0 2 0 5 5 1H 2H 11 10 7 6 5 4 3 2 1 OFF Dry Max 12 11 9 8 10 TA 6 0 6 5 3H 4H 5 0 4 5 4 0 2 0 0 5 0 5 12 9 8 Time Zone Frequency FAN Min Hz Fan speed depend on presetting and can change every speed H...

Page 36: ...ter lamp ON Press RESET button Did you press RESET button for 3 seconds or more Did you press RESET button for 10 seconds or more Switch to AUTO RESTART control YES YES NO NO NO YES Temporary AUTO operation Temporary COOL Operation 10 Discharge temperature control 1 Purpose This function detects error on the refrigerating cycle or error on the com pressor and performs protective control 2 Operatio...

Page 37: ... operation performed prior to the reception of the stop code 3 After the Self Cleaning operation has been performed for the specified period the unit stops operating Unit now performing cooling or dry operation Press STOP button Only timer indicator lights and Self Cleaning operation starts Time set now elapses Operation stops function During Self Cleaning operations The louver opens slightly The ...

Page 38: ...er will stop suddenly when the RESET is pressed but keep holding it continue The will beep 3 times in the first 3 seconds but it is not related to Self Cleaning function After holding about 20 seconds the air conditioner will beep 5 times without any blinking of display The Self Cleaning Operation had been cancelled Remark Presetting of Self Cleaning function above AUTO How to set Self Cleaning fu...

Page 39: ...ory the remote controller selection is set to A on all the indoor units There is no A setting display Setting the remote controller To separate using of remote control for each indoor unit in case of 2 air conditioner are installed nearly Remote Control B Setup 1 Press RESET button on the indoor unit to turn 2 Point the remote control at the indoor unit 3 Push and hold CHK button on the Remote Con...

Page 40: ...e COMFORT SLEEP button is pressed again means cancel comfort sleep mode Heating mode The preset temperature will drop down as show on ECO operation Item No 9 choose the operating hours Repeat Press the COMFORT SLEEP button to pressing to setect thehours If the COMFORT SLEEP button is pressed again means cancel comfort sleep mode 1hr 3hr 5hr or 9hr 1hr 3hr 5hr or 9 hr 16 One Touch 39 capacity SLEEP...

Page 41: ... 1 Automatic operation The indoor unit operates in according to the current operation 2 Cooling operation remote controller does not change The indoor unit s fan speed level increase 1 tap The preset temperature drops 1ºC The value of the preset temperature on the 3 Heating operation remote controller does not change The indoor unit s fan speed level increase 1 tap The preset temperature increases...

Page 42: ... 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 This function is not set to work when shipped from the factory Therefore it is necessary to set it to work...

Page 43: ...red to operate at this time press RESET button once more or use the remote controller to turn it on 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 When the sys...

Page 44: ...ONE TOUCH button for fully automated operation that is customised to the typical consumer preferences in your region of the world 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 Pre...

Page 45: ...remote control Pressing the RESET button the unit can start or stop without using the remote control Operation mode is set on AUTOMATIC operation preset temperature is 24 C and fan operation is automatic speed 8 TIMER OPERATION Setting the ON Timer Setting the OFF Timer Press ON Set the desired ON timer Press OFF Set the desired OFF timer Press SET Set the timer Press SET Set the timer Press CLR C...

Page 46: ...e indoor unit for 3 seconds to cancel the Setting operation 3 beep sound but OPERATION lamp does not blink 11 QUIET OPERATION To operate at super low fan speed for quiet operation except in DRY mode Press QUIET Start and stop the operation Note Under certain conditions QUIET operation may not provide adequate cooling or heating due to low sound features 12 COMFORT SLEEP OPERATION To save energy wh...

Page 47: ...utton for more than 3 seconds while the mark is flashing Press another button to turn off the mark 8 ECO indicator Indicates when the ECO is in activated Press the ECO button to start and press it again to stop operation 9 A B change indicator remote controller When the remote controller switching function is set B appears in the remote controller display When the remote controller setting is A th...

Page 48: ...eft Bottom left Right Rear right Bottom right Wall Do not allow the drain hose to get slack Make sure to run the drain hose sloped downward Cut the piping hole sloped slightly For the rear left and left piping Insert the cushion between the indoor unit and wall and tilt the indoor unit for better operation 100 mm or more 45 mm or more 400 mm or more Saddle Vinyl tape Apply after carrying out a dra...

Page 49: ... Use 8 mm or 10 mm anchor bolts and nuts Parts name Refrigerant piping Liquid side 6 35 mm Gas side 9 52 mm Pipe insulating material polyethylene foam 6 mm thick Putty PVC tapes Part Code A B C Q ty One each 1 One each If it is necessary to drain the defrost water attach drain nipple 9 to the bottom plate of the outdoor outdoor unit before installing it 500 mm 97 mm 53 mm 280 mm Drain outlet Air o...

Page 50: ...rol holder x 1 Super Oxi Deo filter x 1 Super Sterilizer filter x 1 Part No 4 5 6 Part No 7 8 9 Others Name Owner s manual Installation manual Part name Q ty Mounting screw 4 x 25 s x 6 Flat head wood screw 3 1 x 16 s x 2 Drain nipple x 1 10 1 3 Accessory and installation parts The part marked with asterisk is packaged with the outdoor unit ...

Page 51: ...rt diameter has been changed In order to increase pressure resisting strength hose materials and port size have been changed to 1 2 UNF 20 threads per inch When purchasing a charge hose be sure to confirm the port size As pressure is hight and gasification speed is fast it is difficult to read the indicated value by means of charging cylinder as air bubbles occur The size of opposite sides of flar...

Page 52: ...e exposed to direct sunlight or close to a heating source such as a stove Keep the remote control at least 1 m apart from the nearest TV set or stereo equipment This is necessary to prevent image disturbances or noise interference The location of the remote control should be determined as shown below Fig 10 2 1 Top view Indoor unit Reception range Reception range Remote control Remote control Side...

Page 53: ...lls make 5 mm dia holes in the wall Insert clip anchors for appropriate mounting screws 7 NOTE Secure four corners and lower parts of the installation plate with 4 to 6 mounting screws to install it Installation plate Keep horizontal direction 10 2 3 Electrical work 1 The supply voltage must be the same as the rated voltage of the air conditioner 2 Prepare the power source for exclusive use with t...

Page 54: ...e to insulate both the connecting pipes Use polyethylene foam as insulating material Fig 10 2 8 1 Die cutting Front panel slit Cut out the slit on the left or right side of the front panel for the left or right connection and the slit on the bottom left or right side of the front panel for the bottom left or right connection with a pair of nippers 2 Changing drain hose For left connection bottom l...

Page 55: ...n a radius of 30 mm 6 35 40 mm 9 52 To connect the pipe after installation of the unit figure Fig 10 2 15 NOTE If the pipe is bent incorrectly the indoor unit may unstably be set on the wall After passing the connecting pipe through the pipe hole connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them CAUTION Bind the auxiliary pipes two and connecting cable with fa...

Page 56: ...s up 15 m An allowable height level is up to 10 m A place where the drain water does not raise any problem CAUTION 1 Install the outdoor unit without anything blocking the air discharging 2 When the outdoor unit is installed in a place exposed always exposed to strong wind like a coast or on a high storey of a building secure the normal fan operation using a duct or a wind shield 3 In particularly...

Page 57: ... charging hose from the service port 8 Securely tighten the caps on the packed valves Fig 10 3 7 Tightening torque of flare pipe connections The operating pressure of R410A is higher than that of R22 Approx 1 6 times It is therefore necessary to firmly tighten the flare pipe connecting sections which connect the indoor and outdoor units up to the specified tightening torque Incorrect connections m...

Page 58: ...type More than H07RN F or 245 IEC66 1 0 mm2 or more Packed valve handling precautions Open the valve stem all the way out but do not try to open it beyond the stopper Securely tighten the valve stem cap with torque in the following table Fig 10 3 8 10 3 4 Wiring connection 1 Remove the valve cover from the outdoor unit 2 Connect the connecting cable to the terminal as identified with their respect...

Page 59: ...detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing its bottom up at the specified parts Fig 10 3 12 Press unhook Hook 1 Installation plate Hook here 1 2 Push Push 10 3 7 Test operation To switch the TEST RUN COOL mode press RESET button for 10 sec The beeper will make a short beep 10 3 8 Auto restart setting This product is designed so that after a ...

Page 60: ...tdoor unit control inverter Therefore if the power supply is turned off charge charging voltage DC280V remains and discharging takes a lot of time After turning off the power source if touching the charging section before discharging an electrical shock may be caused Discharge the electrolytic capacitor completely by using soldering iron etc Discharging method 1 Remove the inverter cover plating b...

Page 61: ...or speed increases again approx 30 seconds after 5 The set value of the remote control should be below the room temperature 6 In AUTO mode the operation mode is changed 7 In HEAT mode the compressor motor speed does not increase up to the maximum speed or decreases before the temperature arrives at the set temperature No Operation of air conditioner Description The OPERATION lamp of the indoor uni...

Page 62: ... can be confirmed on the remote control for servicing Table 11 3 1 OPERATION Green Flashing display 1 Hz OPERATION Green TIMER Yellow PRE DEF Orange Flashing display 5 Hz OPERATION Green PRE DEF Orange Flashing display 5 Hz OPERATION Green TIMER Yellow Flashing display 5 Hz OPERATION Green Flashing display 5 Hz Protective circuit operation for indoor P C board Protective circuit operation for conn...

Page 63: ...l beep once Beep and the display of the remote controller will change as follows The TIMER indicator of the indoor unit flashes continuously 5 times per 1 sec Check the unit with all 52 check codes to as shown in Table 11 4 1 Press ON or OFF button to change the check code backward If there is a fault the indoor unit will beep for 10 seconds Beep Beep Beep Note the check code on the display of the...

Page 64: ...tion continues Displayed when error is detected Displayed when error is detected Displayed when error is detected Displayed when error is detected Flashes when trouble is detected on return serial signal and normal status when signal is reset Flashes when trouble is detected on operation command signal and normal status when signal is reset 1 Check the room temp sensor 2 When the room temp sensor ...

Page 65: ...on return serial signal and normal status when signal is reset Displayed when error is detected Displayed when error is detected Displayed when error is detected Even if trying operation again all operations stop immediately Replace P C board 1 Even if connecting lead wire of compressor is removed position detect circuit error occurred Replace P C board 2 Measure resistance between wires of compre...

Page 66: ...rol Does transmission mark on remote control flash normally and is its signal transmitted properly Remote control is defective Refer to 5 Remote Control Is fuse F01 of indoor control board blown Is voltage DC 12V or 5V indicated on rear of indoor control board normal Microcomputer is defective Replace main P C board Refer to Primary check or this problem is one step short of power P C Is the volta...

Page 67: ...P C board is replaced Confirmation procedure YES YES NO NO To item of Power is not turned on Turn on power supply Does operation lamp flash Is wired correctly to white and black lead wires of terminal board Correct wiring 66 FILE NO SVM 07008 ...

Page 68: ...ing module failure T101 Does the cross flow fan rotate normally Is the rotation signal DC 5 V 0 V output between 2 gray lead wire and 3 brown lead wire of the motor connector CN11 when rotating the cross flow fan by hand in no operating status 1 pulse one turn Turn on the power supply Repair the bearing of the fan Turn the power supply Shut off the power supply once Does connecting terminal connec...

Page 69: ... the fan rotating NOTE Do not disconnect the connector while the fan rotates Use a thin tester rod Indoor fan starts rotating when power supply breaker is turned ON Check output voltage DC of the fan motor on P C board Measure the voltage of the motor connector CN31 pin 2 GND Black and pin 5 V line Yellow under condition that the indoor fan rotates Above DC 0 4V P C board is defective 5 Yellow 4 B...

Page 70: ... control is defective Does indoor unit start to operate by automatic restart function Does radio sound is affected by remote control when a signal is transmitted at distance of 5 cm from radio P C board is defective Keep indoor unit away from thyristor fluorescent light Avoid direct sunlight Replace P C board Replace batteries Normal operation Replace remote control The unit does not beep at all O...

Page 71: ...unit stops in a little while after operation started Check procedure Select phenomena described below 1 The outdoor unit stops 10 to 20 minutes after operation started and 10 minutes or more are required to restart the unit 2 If the unit stops once it dose not operate until the power will be turned on again 3 The outdoor unit stops 10 minutes to 1 hour after operation started and an alarm is displ...

Page 72: ...e valve is clogged Is positioning sound of valve sound hitting to stopper heard from valve when the air conditioner starts the operation after turning off power of the air conditioner once NOTE After all the operations stopped by the remote control the power keeps being supplied to outdoor unit for approx 3 minutes If operating the air conditioner by remote control again just after all the operati...

Page 73: ...rd assembly is blown or not F01 Turn on power breaker and operate the air conditioner in COOL mode by short circuit of the timer Measure terminal voltage of electrolytic capacity 500µF 400WV x 3 After operation turn off the power breaker after 2 minutes 20 seconds passed and discharge the electrolytic capacity by soldering iron Check voltage between motor phases Is not winding between 1 2 2 3 or 1...

Page 74: ...check for disconnection burning or discolora tion of the copper foil pattern or this P C board 2 The P C board consists of the following 2 parts a Main P C board part DC power supply circuit 5 V 12 V 15 V Indoor fan motor control circuit CPU and peripheral circuits buzzer and Driving circuit of louver b Indication unit of infrared ray receiving Infrared ray receiving circuit LED To check defect of...

Page 75: ...e normally after approximate 3 sec 1 Compressor does not operate 2 OPERATION lamp blinks 1 Compressor does not operate 2 OPERATION lamp blinks 1 Motor does not rotate The key operation is accepted 2 The Motor rotates but it vibrates too much Shut off the power supply and remove the P C board assembly from the electronic parts base Remove the connecting cable from the terminal block Remove the conn...

Page 76: ... 20 30 40 50 Resistance value k Temperature C TD Discharge temp sensor TA Room temp sensor TC Heat exchanger temp sensor TO Outdoor temp sensor TE Outdoor heat exchanger temp sensor TA TC TO TE TD Sensor characteristic table FILE NO SVM 07008 ...

Page 77: ... Other parts No Part name Checking procedure 11 8 4 Outdoor unit 1 Compressor Model DA89X1C 23FZ Sensor TA TC kΩ 20 7 12 6 10 0 7 9 4 5 5 4 3 2 1 White Yellow Yellow Yellow Yellow 5 4 3 2 1 No Part name Checking procedure Position Resistance value 1 to 2 1 to 3 380 40Ω 1 to 4 1 to 5 Temperature 10 C 20 C 25 C 30 C 40 C Measure the resistance value of winding by using the tester For details refer t...

Page 78: ...ty test by the tester 11 8 5 Checking Method for Each Part Case that product is good Pointer swings once and returns slowly When performing test once again under another polarity the pointer should return No Part name Checking procedure Soldered surface Heat sink IGBT side C12 C13 C14 3 Outdoor temperature sensor TO discharge temperature sensor TD suction temperature sensor TS outdoor heat exchang...

Page 79: ...econds though it starts 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 2 Cause The following causes are considered when the outdoor fan motor does not normally rotate 1 Mechanical lock of the outdoor fan motor 2 Winding failure of the outdoor fan motor 3 Positi...

Page 80: ...he screw for the electrical part box Then remove the LED and the electrical part box from the main unit How to mount the electrical part 1 To put back the electrical part box lock it to the upper hook of the back body 2 Tighten the screws on the electrical part box 3 Connect the 3 connectors and arrange the wiring same as original condition and then tighten the screw from the LED unit to the back ...

Page 81: ... assemble cross flow fan and fan motor to the unit please turn the fan motor unit the center of its terminal meets the top position of band motor R Fix the cross flow fan with the set screw at the position where the gap between the back body and the right surface of the cross flow fan is 4 7 mm 1 Remove the front panel electrical part horizontal louver heat exchanger and the cross flow fan followi...

Page 82: ...nditioner 2 Remove the front panel Remove the 4 fixing screws 3 Remove the electrical part base 1 Common procedure 12 2 Microcomputer Replace the thermal fuse terminal block microcomputer ass y and the P C board ass y P C board layout No Part name Procedures Remarks Component side ...

Page 83: ...FILE NO SVM 07008 82 P C board layout Solder side ...

Page 84: ...net 2 After connecting the power cord and connecting cable attach the cord clamp and wiring cover Insert the upper part into the upper cabinet and insert the claw which has been hooked to the lower part into the square hole and then fix it with screw ST1T 4 x 10s 1 pc 3 Attach the valve cover ST1T 4 x 10s 1 pc Insert the upper part to the upper cabinet set the hook claw of the valve cover to squar...

Page 85: ...charge and voltage remains depending on the malfunction state in some cases NOTE This capacitor has mass capacity Therefore it is dangerous that a large spark generates if short circuiting between the e d polarities with screwdriver etc for discharging 4 Perform the work of 2 5 Remove the screw ST1T 4 x 10s 1 pc fixing the main body and the inverter box 6 Remove the lead wire from the holder on th...

Page 86: ...Note 1 As the connector has a stopper release the housing lock when removing Note 2 Hold the housing resin part with stopper and pull out to remove 2 Remove the control board assembly from the inver ter box Note 2 Remove the claw of the board support fixed to the inverter board and remove upwards holding the heat sink 3 Remove the three screws fixing the heat sink and control board assemble 4 Atta...

Page 87: ...ed end splice 1 Perform work of item 1 of 1 1 of 2 2 Extract refrigerant gas 3 Remove the partition board ST1T 4 x 10s 3 pcs 4 Remove the sound insulation material 5 Remove the terminal cover of the compressor and disconnect the lead wire of the compressor thermo and the compressor from the terminal 6 Remove the pipe connected to the compressor with a burner Make sure the flame does not touch the ...

Page 88: ...n guard side faces downwards 3 Remove the hooking claws by pushing a minus screwdriver according to the arrow mark in the right figure and remove the fan guard 2 Attachment 1 Insert the claws of the fan guard in the hole of the front cabinet Push the hooking claws 8 positions by your hand and fix the claws Requirement This completes all the attaching work Check that all the hooking claws are fixed...

Page 89: ...ective tube when colored protective tube is used 10 Fix the sensor again NOTES 1 Store the joint part of the sensor and the connector in the electric parts box 2 Never joint them near the thermal sensor part Otherwise it would cause insulation inferiority because of dew drops 3 When replacing the sensor using the colored protective tube wind the color tape matching the color of that tube Replaceme...

Page 90: ...rts Assy 401 405 410 411 404 403 Location Part Location Part No No No No 401 43T60365 TERMINAL BLOCK 3P 405 43T69612 PC BOARD ASSY WRS LED 403 43T69319 TEMPERATURE SENSOR 410 43T62003 CORD CLAMP 404 43T69320 TEMPERATURE SENSOR 411 43T69628 ASM PCB SERV Description Description ...

Page 91: ... 43T39324 MOTOR BAND LEFT 204 43T80317 AIR FILTER 221 43T39321 MOTOR BAND RIGHT 205 43T09392 HORIZONTAL LOUVER 222 43T21393 FAN MOTOR 206 43T70313 DRAIN HOSE 224 43T82309 INSTALLATION PLATE 207 43T79301 CAP DRAIN 225 43T69615 WIRELESS REMOCO 208 43T21363 MOTOR STEPPING 226 43T83003 HOLDER REMOTE CONTROLLER 209 43T44387 REFRIGERATION CYCLE ASSY 227 43T62326 TERMINAL COVER 210 43T47353 PIPE SUCTION ...

Page 92: ...PER CABINET 6 43T19336 FIN GUARD 21 43T00448 FIXING PLATE VALVE 7 43T47308 CAPILLARY TUBE 1 0 DIA 22 43T42331 BASE PLATE ASSEMBLY 8 43T46331 VALVE PACKED 9 52 DIA 23 43T79305 DRAIN NIPPLE 9 43T47332 BONNET 9 52 DIA 24 43T46313 REACTOR 10 43T46332 VALVE PACKED 6 35 DIA 25 43T46333 4 WAY VALVE 11 43T47331 BONNET 6 35 DIA 26 43T46334 COIL 4WAY ASSEMBLY 12 43T21396 FAN MOTOR MADE IN CHINA 27 43T04303 ...

Page 93: ... Location Part Location Part No No 701 43T62320 HEATSINK 705 43T60377 TEMPERATURE SENSOR 702 43T69620 ASM PCB SERV 706 43T50304 SENSOR HEAT EXCHANGER 703 43T60352 TERMINAL BLOCK 6P 707 43T62313 BASE PLATE PC 704 43T60326 FUSE 708 43T55325 CAPACITOR PLASTIC FILM Description Description ...

Page 94: ...FILE NO SVM 03008 87 TOSHIBA CARRIER CORPORATION ...

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