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Toshiba RAS-10YAV-E Air Conditioner User Manual

1. gg c RAS 13YKV E RAS 13YAV E Unit model RAS 13YKV E RAS 13YAV E Current limited e i Cooling capacity KW 87 E e 0 8 6 6 Power supply 220 230 240V 1Ph 50 60Hz Electric Indoor Operation mode Cooling Heating characteristics Running current 0 15 0 15 Power consumption 30 30 Power factor 87 87 Outdoor Operation mode Cooling Heating Running current 5 59 5 34 5 11 7 03 6 71 6 43 Power consumption 1170 1470 Power factor 95 95 Starting current High Cooling Heating Medium Cooling Heating Cooling Heating Indoor unit Dimension Height mm Width Depth Net weight Fan motor output Air flow rate Cooling Heating Outdoor unit RAS 13YAV E Dimension i mm 550 i 780 Net weight 38 Type Twin rotary type with DC inverter variable speed control Model DA91A1F 44F A torre T C n Air flow rate Cooling Heating m3 h 2520 2520 Indoor unit Liquid side 06 35 Outdoor unit Liquid side 06 35 Te side 9 52 Maximum 15 ta as Wiring connection Power supply Interconnection Usable temperature range Indoor Cooling Heating Outdoor Cooling Heating Accessory Indoor unit Installation plate p Wireless remote control Remote controller holder Pan head wood screw 2 03 1 x 16L Purifying filter Deodorizing filter Batteries Mounting screw es x 25L Instal
2. H FILE A00 T004 SERVICE MANUAL AIR CONDITIONER SPLIT TYPE RAS 10YKV E RAS 10YAV E RAS 13YKV E RAS 13YAV E HFC CONTENTS 1 SPECIFICATIONS UU IU U 3 2 REFRIGERANT 410 4 6 3 CONSTRUCTION VIEWS 14 4 WIRING DIAGRANU 16 5 SPECIFICATIONS OF ELECTRICAL PARTS 18 6 REFRIGERANT CYCLE DIAGRAM 19 7 CONTROL BLOCK DIAGRAM 21 8 OPERATION DESCRIPTION 23 9 INSTALLATION PROCEDURE 36 10 HOW TO DIAGNOSE THE TROUBLE 40 11 HOW TO REPLACE THE MAIN PARTS 59 12 EXPLODED VIEWS AND PARTS LIST 69 1 SPECIFICATIONS 1 1 Specifications RAS 10YKV E RAS 10YAV E Unit model sta 3 Current limited mm 220 230 240V 1Ph 50 60Hz Electric Indoor Operation mode Heating characteristics Running current 0 15 0 15 Power consumption Power factor 87 Outdoor Operation mode Cooling Heating Running current 3 39 3 23 3 09 4 40 4 20 4 02 Power consumption 870 Power factor 90 Starting current 4 55 4 35 4 17 Operatin
3. It excels in coating performance and is harmless to the human bogy As the flux works in a complicated manner as described above it is necessary to select an adequate type of flux according to the type and shape of treated metal type of brazing filler and brazing method etc 3 Types of flux Noncorrosive flux Generally it is compound of borax and boric acid It is effective in case where the brazing temperature is higher than 800 C Activated flux Most of fluxes generally used for silver brazing are this type It features an increased oxide film removing capability due to the addition of compounds such as potassium fluoride potassium chlo ride and sodium fluoride to the borax boric acid compound 4 Piping materials for brazing and used braz ing filler flux Piping Used brazing material filler Copper Copper Phosphor copper Do not use Paste flux Copper Iron Silver Iron Iron Silver Vapor flux D Do not enter flux into the refrigeration cycle When chlorine contained in the flux remains within the pipe the lubricating oil deterio rates Therefore use a flux which does not contain chlorine When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water Remove the flux after brazing 2 5 3 Brazing As brazing work requires sophisticated techniques experiences based upon a theoreti
4. 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 Replace P C board 1 When the outdoor unit never operate 1 Check connecting cable and correct if defective wiring 2 Check 25A fuse of inverter P C board 3 Check 3 15A of inverter P C board To display Other block during operation check compressor thermo operation and supply gas check gas leak also Unit operates normally during check If Return serial signal does not stop between indoor terminal board 2 and 3 replace inverter P C board If signal stops between indoor terminal board 2 and 3 replace indoor P C board If Return serial signal does not stop between indoor terminal board 2 and 3 replace inverter P C board If signal stops between indoor terminal board 2 and 3 replace indoor P C board Block distinction Outdoor P C board Operation of diagnosis function Air conditioner status Cause of operation Inverter over current protective circuit operates Short time Remarks Displayed when error is detected Judgment and action Even if trying operation again all operations stop immediately Replace P C board Position detect circuit error or short circuit between windings of compressor Displa
5. Stops though activation is prompted Check operation within 2 minutes 20 seconds after activation stopped lt Output check of fan motor a One or two of three position detect signal gt voltages should be 5V While connecting connector and others should be 0V 5P CN301 for position When all are OV or 5V it detection using a tester is not accepted Check measure voltage between D b When rotating the fan compressor Between 5V slowly with hands the winding voltage between pins resistance should move from OV to 5V Check it with an analog Replace Replace control board tester 10 8 How to Check Simply the Main 2 Inspection procedures Parts 1 When a board is judged to be defective check for disconnection burning or discol 10 8 1 How to Check the P C Board oration of the copper foil pattern or this PC Indoor Unit board 1 Operating precautions 2 The P C board consists of the following 2 1 When removing the front panel or the P C parts board be sure to shut off the power supply a Main P C board part breaker DC power supply circuit 5V 12V 35V 2 When removing the PC board hold the edge Indoor fan motor control circuit CPU and of the P C board and do not apply force to the peripheral circuits buzzer and Driving parts circuit of top bottom louvers 3 When connecting or disconnecting the b Indication unit of infrared ray receiving connectors on the P C
6. 78910 2 REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC R410A which does not damage the ozone layer The working pressure of the new refrigerant R410A is 1 6 times higher than conventional refrigerant R22 The refrigerating oil is also changed in accordance with change of refrigerant so be careful that water dust and existing refrigerant or refrigerat ing oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time The next section describes the precautions for air conditioner using the new refrigerant Conforming to contents of the next section together with the general cautions included in this manual perform the correct and safe work 2 1 Safety During Installation Servicing As R410A s pressure is about 1 6 times higher than that of R22 improper installation servicing may cause a serious trouble By using tools and materi als exclusive for R410A it is necessary to carry out installation servicing safely while taking the following precautions into consideration 1 Never use refrigerant other than R410A in an air conditioner which is designed to operate with R410A If other refrigerant than R410A is mixed pres sure in the refrigeration cycle becomes abnor mally high and it may cause personal injury etc by a rupture 2 Confirm the used refrigerant name and use tools and materials exclusive for the r
7. Procedure 1 Cut the sensor 100 mm longer than old one 2 Cut the protective tube after pulling out it 200 mm 3 Move the protective tube toward the thermal sensor side and tear the tip of lead wire in two then strip the covering part 4 Pass the stripped part through the thermal constringent tube 5 Cut the old sensor 100 mm length on the connector side and recycle that connector 6 Tear the lead wire in two on the connector side and strip the covering part 7 Twist the leads on the connector and sensor sides and solder them 8 Move the thermal constringent tubes toward the soldered parts and heat them with the dryer and constring them 9 Wind the attached color tape round the both terminals of the protective 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 Parts name Sensor Remarks Thermal Cutting here 100 sensor part Connector 200 Cutting here constringent tube Cutting here 100 xo E Soldered Doner Winding the color tape Remarks Length 3m Sensor Spr
8. Replace valve EIS 10 7 How to Diagnose Trouble in Outdoor Unit 10 7 1 Summarized Inner Diagnosis of Inverter Assembly Diagnosis Process flowchart Remove connector of compressor Check 25A fuse Part 01 Replace fuse Check electrolytic capacitor diode block DBO1 etc Check terminal voltageN NG of electrolytic capacitor Check electrolytic capacitor diode 01 Does outdoor fan rotate Does LED on control board flash or go on Remove connector CN300 of outdoor fan motor and using a tester check resistance value between every phases at motor side Replace outdoor fan motor Preparation Operation Measurement Check Stop Check Measurement Contents Turn OFF the power breaker and remove 3P connector which connects inverter and compressor Check whether 25A fuse on the control board assembly is blown or not F01 Check whether 15A fuse on the control board assembly is blown or not 15A fuse F03 on the control board is provided for power factor improvement control circuit The operation continues even if fuse is blown Turn on power breaker and operate the air conditioner in COOL mode by short circuit of the timer Measure terminal voltage of the electrolytic capacity 500uF 400WV x 3 After operation turn off the power breaker after 2 minutes 20 seconds passed and
9. 43046378 43058264 43050298 4302C019 43047549 43020310 43097204 43049643 43063274 43063198 43063195 43019904 43046344 43046348 43032441 Coil P M V Reactor Thermo Bimetal CS 7 Motor Fan DC Nut Flange Fan Propeller Nut Cushion Rubber Holder Sensor Holder Sensor Holder Thermo Bimetal Holder Sensor Valve 4 way Solenoid Coil Drain Nipple 12 3 Board Layout RAS 10YAV E RAS 13YAV E Part No Description 43050382 43050334 43060052 43060726 Sensor TC F6 Sensor TD F4 Fuse 25A 250V Lead Type Fuse 15A 250V Lead Type 72 Part No Description 4306A044 43062215 43063306 4306S230 Terminal block 9P Base P C Board Heatsink Board Assembly MCC 808 TOSHIBA CARRIER CORPORATION 336 TADEHARA FUJ I SHI SHIZUOKA KEN 416 8521 JAPAN TURN 407 10YKV E 404 43T69005 2 Sensor Thermostat 10kW 25 Board Assembly 772 407 1 43 69063 Board Assembly MCC 772 402 43T60002 Terminal Block AC 300V 20A 412 43T61001 Base E Parts ABS Black UL94 5V 413 43T61001 Base E Parts ABS Black UL94 5V 403 43T69004 Sensor Heat Exchanger 10kW 25 405 43T69031 P C Board Assembly WRS LED MCC 766 TURN 211 43T09004 214 43707001 Louver Assembly Bushing 201 43T00043 210 43T09035 212 4
10. Attach the removed screws to the original positions 62 Remarks Upper cabinet Wiring 9 cover III Concave section Part name Inverter assembly Procedure 1 Detachment 1 Perform work of item 1 of 2 Remove screw ST1T 4 x 100 1 pc of the upper part of the front cabinet f removing the inverter cover in this condition P C board can be checked f there is no space in the upper part of the upper cabinet perform work of Be careful to check the inverter because high voltage circuit is incorporated in it Perform discharging by connecting 9 O polarity by discharging resistance approx 100040W or plug of soldering iron to o O terminals of the C14 printed CAUTION HIGH VOLTAGE is attached electrolytic capacitor 500 on P C board Be careful to discharge the capacitor because the electrolytic capacitor cannot naturally discharge and voltage remains according to trouble type in some cases NOTE This capacitor is one with mass capacity Therefore it is dangerous that a large spark generates if short circuiting be tween amp oOpolarity with screwdriver etc for discharging 4 Remove screw ST1T 4 x 100 1 pc fixing the main body and the inverter box 5 Remove various lead wires from the holder at upper part of the inver
11. CN600 CN601 603 2 Remove the control board assembly from board base 1 Main control board assembly side Remove two claws of P C board base and remove upward the heat sink with hands Remove three screws fixing the heat sink and main control board assembly side and replace the board with a new one Remarks CN703 500 CN701 C Du CN601 CN602 CN603 CN300 CN301 and CN701 etc at the control board assembly side are connectors with locks Therefore remove the connector while pushing the part indicated by an arrow iP board board When mounting a new board check that the board is correctly set in the groove of base holder of P C board base Rear cabinet 1 Perform work of item 1 of 2 Remove fixed screws fixing to the bottom plate 5 1 04 x 100 3 pcs 3 Remove fixed screws fixing to the heat exchanger ST1T 4 x 104 2 pcs 4 Remove fixed screw fixing to the valve mounting plate ST1TO4 x 100 1 pc 64 Part name Fan motor Procedure Perform work of item 1 of D and Q Remove the flange nut fixing the fan motor and the propeller Flange nut is loosened by turning clockwise To tighten the flange nut turn counterclock wise Remove the propeller fan Disconnect the connector for fan motor from the inverter 5 Remove the fixi
12. F02 Q29 IC03 are defective Make the operation status by Voltage check 1 Breaking wire of the relay coil pushing once the START STOP 1 Voltage of relay coil DC 12V defective relay driver IC31 button except the status of ON Between pin 10 of IC31 and GND 2 Poor contact of relay TIMER J Between pin 11 of IC31 Between No 1 and 2 of connecting cable terminal block 220 230 240 Defective indicator poor housing assembly CN13 which the time of the restart delay Indicators do not indicate normally Start the operation with the system All indicators light for 3 sec timer is shortened after approximate 3 sec Make the operation status by pressing 1 Compressor does not operate 1 The temperature of the indoor heat once the START STOP button OPERATION lamp flashes exchanger is abnormally low 1 The time of the restart delay timer 2 Poor contact of the heat exchanger is shortened sensor The connector is 2 Cool operation disconnected CNO1 3 Air volume AUTO 3 Heat exchanger sensor main P C 4 Make the setting temperature lower board are defective enough than room temperature 4 Main P C board is defective 5 Continuous operation Turn the power on after connecting The voltage of DC 35V is not 1 Indoor fan motor is defective the motor connector measured between the red and Protecting operation
13. Since judgment of DC motor is difficult on the single motor refer to 10 5 1 3 Checking procedure Measure the resistance value of each winding by using the tester Red Position Resistance value Red White 0 51 to 0 57 Q White Black 0 51 to 0 57 Q Black Red 0 51 to 0 57 Under 20 White Black Outdoor fan motor Model ICF 140 40 7 Measure the value of mien by using the tester 5to20k Q 1 Yellow 4 Pink 5 Gray NIA Pink White Black For details refer to Section 10 9 Compressor thermo Bimetal type Model PW 2AL Check conduction by using the tester Outdoor temperature sensor TO discharge temperature sensor TD suction temperature sensor TS outdoor heat exchanger temperature sensor TE Disconnect the connector and measure resistance value with the tester Normal temperature S we we 1 64 4 2 TGa Heat TO TS TE Refer to the TA characteristic table in Indoor Refer to Table 10 8 3 No 1 56 10 8 5 Checking Method for Each Part Part name Checking procedure Electrolytic capacitor Turn OFF the power supply breaker For raising pressure Discharge all four capacitors completely smoothing Check that safety valve at the bottom of capacitor is not broken Check that vessel is not swollen or exploded Check that electroly
14. about three seconds after The unit beeps three times The system stops If the system is not required to stop at this time use the remote controller and to restart 8 4 1 How to Set the Auto Restart To set the Auto Restart function proceed as follows Access the TEMPORARY button located in the lower right hand corner beneath the hinged front panel of the indoor unit please refer to Fig 8 2 9 The power supply to the unit must be on the function will not be set if the power is off To enable the Auto Restart function push the TEMPORARY button continuously for three seconds The unit will acknowledge the setting and beep three times The system will now restart automatically The above Auto Restart settings can be carried out Motion The green light goes on The orange light goes on The system is operating If the system is not required to run at this time push the TEMPORARY button once more or use the remote controller and the unit will stop The green light goes on The green light goes off During louver swing AUTO operation after restart by the Auto Restart function the louver swing stops _ 33 8 4 2 How to Cancel the Auto Restart The system will now be required to manually restart with the remote controller after the main supply is To cancel the Auto Restart function proceed as turned off follows Cancellation is carried out Repeat the setting procedure the unit
15. discharge the electrolytic capacity by soldering iron Check voltage between motor phases Is not winding between D Q G or O opened or short circuited Is not frame grounded with or 52 Summary If fuse was blown be sure to check the electrolytic capacitor and diode block DB01 Connect discharge resistance approx 100Q40W or soldering iron plug between terminals of the electro lytic capacitor 500 of C14 with printed CAU TION HIGH VOLTAGE on board Plug of Discharging position soldering Discharging period 10 seconds or more If 15A fuse is blown discharge both edges of the electrolytic capacitor with soldering iron OK if 500pF gt DC280 to 320V Remove CN300 while pushing the part indicated by an arrow because CNO1 is a connector with lock Resistance between phases should be approx 55 to 77Q Should be 10MQ or more Diagnosis Process flowchart Contents Summary Check winding resistance between phases of compres sor and resistance between outdoor frames by using a tester 5 not grounded OK if 10 or more winding of 5 not short circuited OK if 0 512 gt 0 570 between windings ic e Winding is not opened Check by a digital tester Operation Remove CN300 of position the outdoor fan motor turn detect on the power breaker and signal perform the operation
16. 25A VARISTOR Pos eu i Low P10 AN m L i I e 8 22 Ra I POWER RELAY P12 rris 5 ttl PUR ELECTRONIC 77 STARTER FOS Ci2 C14 F04 FUSE RELAY ono 9 i O 9 MJ amp 5 gt m BLU 2 WH P23 BLK 17 COMPRESSOR 247 BLK BLU RED GRY PNK BLACK BLUE RED GRAY PINK COLOR IDENTIFICATION WHI WHITE BRW ORN YEL PUR BROWN ORANGE YELLOW PURPLE 5 SPECIFICATIONS OF ELECTRICAL PARTS 5 1 Indoor Unit RAS 10YKV E RAS 13YKV E Parts name Type Specifications Fan motor for indoor TICF 35 19 4 DC35V 19W Thermo sensor TA sensor 10kQ at 25 C DC DC transformer TO1 SWT 34 or SWT 46 DC390V Secondary DC35V 12V 7V 4 Microcomputer TMP87PM40AF or TMP87CM40AF 2 UF 253Y0R7 RBV 406 or D3SBA60 KMH450VNSN100M25B TSCR6 3A MA2830 FJ 15G561K ERF 5TK5R6 MP35EA7 Heat exchanger temp sensor Mes senso 10kQ at 25 C 25mH ACO 7A 4A 600V 100pF 450V T6 3A 250V 4A 600V 560V 5 60 5W Output Rated 2W 10poles 1phase DC12V 8 9 Fuse 01 Power supply 01 Varistor R21 R109 Resistor RO1 Louver motor 5 2 Outdoor Unit RAS 13YAV E Model name SC 15 S06J SC 20 01J Parts name pet coil 15A 0 6mH
17. Gas leakage detector Exclusive for HFC refrigerant Exclusive for HFC refrigerant Incidentally the refrigerant cylinder comes with the refrigerant designation R410A and protector coating in the U S s ARI specified rose color ARI color code PMS 507 Also the charge port and packing for refrigerant cylinder require 1 2 UNF 20 threads per inch correspond ing to the charge hose s port size 9 2 Indoor Unit 9 2 1 Installation Place A place which provides the spaces around the indoor unit as shown in the above diagram A place where there is no obstacle near the air inlet and outlet A place which allows an easy installation of the piping to the outdoor unit A place which allows the front panel to be opened Direct sunlight to the indoor unit wireless receiver should be avoided The microprocessor in the indoor unit should not be too close to r f noise sources For details see the owner s manual Remote controller A place where there are no obstacles such as a curtain that may block the signal from the indoor unit Do not install the remote controller in a place exposed to direct sunlight or close to a heating Source such as a stove Keep the remote controller 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 controller should be determined as show
18. Hook Front cabinet 1 Mone eon Insert the cushion between Front panel the indoor unit and wall and lift indoor unit to make work easier 125 a a Do not allow the drain hose to get slack Cut the piping hole sloped slightly Pan head wood screw Make sure to run the drain hose sloped downward auxiliary piping be N connected the left rear left rear right or bottom Remote controller holder Right i remote controller 600mm or more 70 REN lt Way Rear Rear left Bottom Left Before install the wireless remote controller Insulation of refrigerant pipes insulates the pipes separately not together With the remote controller cover open load the batteries supplied correctly observing their polarity Wireless remote controller N oor 9 9 Batteries 6 mm thick heat resisting polyethylene foam e F As shown in the figure hang power cord and connecting cable downward and take out it along piping connection port Fig 9 1 1 9 1 2 Optional Installation Parts Parts name Refrigerant piping Liquid side 06 35 Gas side 09 52 Pipe insulating material Polyethylene foam 6mm thick Putty PVC tapes Use 08 mm or 010 mm Fixing bolt arrangement of outdoor unit Secure the outdoor unit with the fixing bolts an
19. Noise filter 20A 150uH Primary side DC280V Secondary side 7 5V x 1 13V x 1 26 5V x 3 16V x 1 15V x 1 L 10mH 16A x 2 DC140V 40W Coil DC12V Contact AC125V 3A SWT 43 CH38Z K ICF 140 40 7 AJQ1341 Suction temp sensor TS sensor Inverter attached 25 Discharge temp sensor TD sensor Inverter attached 62KQ 20 C Outside air temp sensor TO sensor Inverter attached 10kQ 25 C Heat exchanger temp sensor TE sensor Inverter attached 10kQ 25 C 20A AC250V 3 15A AC250V For protection of switching power source For protection of transistor module breakage 15A AC250V For protection of inverter input overcurrent 25A AC250V 12 13 Electrolytic capacitor Transistor module LLQ2G501KHUATF 400LISN500K35F 6MBI25GS 060 01 or 6MBI25GS 060 01A 500uF DC400V X pieces 25A 600V Compressor DA91A1F 44F 3 phases 4 poles 750W Compressor thermo US 622KXTMQO SS OFF 125 4 ON 90 5 C Converter module MP7003 48 Diode 25A 600V IGBT 40A 600V 6 REFRIGERANT CYCLE DIAGRAM 6 1 Refrigerant Cycle Diagram RAS 10YKV E RAS 10YAV E RAS 13YKV E RAS 13YAV E INDOOR UNIT ee n a Indoor heat exchanger Pressure measurement Gauge attaching port Vacuum pump connecting port Deoxidized copper i Outer dia 9 52mm Thickness 0
20. is AUTO only temp The outdoor unit controls the outdoor fan relay R01 R02 and R03 and the compressor motor NOTE speed according to the operation command signal sent from the indoor unit 1 Middle motor speed between L and SUL Fig 8 2 5 Setting of air flow 20 8 2 3 Heating Operation Transferring of heating operation signal from indoor unit to outdoor unit starts The indoor fan motor operates by the room tempera ture when selecting AUTO of FAN as shown in Fig 8 2 6 and operates with a set air flow when selecting Low to High However to prevent cold draft revolution speed of the fan is restricted by indoor heat exchanger when air flow is AUTO Fig 8 2 7 and starting of FAN Manual Basic control Set 0 LOW temp 0 5 E 1 5 x1 Lj 2 28 SL 50 55 FAN AUTO HIGH 1 2 Approximate revolution speed of M and L to linear according to temperature Fig 8 2 6 Setting of air flow Cold draft preventing control The upper limit of fan revolution speed is shown below Approximate revolution speed of HIGH and SUL linear by Tc SUL NOTE 1 Stop Starting of FAN Manual Fig 8 2 7 Cold draft preventing control NOTES 1 Stops for 2 minutes after thermostat OFF 2 24 C when the set temp is 24 C or more Set temp when the set temp is below 24 C 3 SUL Super ultra low In starti
21. reference Connecting pipe 0 39m Flare 09 52 Knock out system Front panel Hanger Connecting pipe 0 49m Flare 06 35 Hanger For stud bolt 08 010 stud Minimum distance to wall Wireless 65 5 659 165 5 450 344 lt 326 5 Minimum a istance 26 amp q q S to ceiling Y Y 9 T o Minimum s O S IM 5 sistance F e EY to wa colo 4 SA a k N 5 i Hanger f installation Hanger o 10 5 plate outline Center line 60 5 76 319 269 126 4 e 4 790 a remote controller 55 136 3 2 Outdoor Unit RAS 10YAV E RAS 13YAV E 600 90 025 drain hole A leg part 11 x 17U shape hole For 08 010 anchor bolt 310 Anchor bolt long hole pitch 9 96 hole pitch 04 5 embossing O4STS used For sunshade roof attaching Charging port Earth terminal Connecting pipe port Pipe dia 6 35 Detailed A leg part Connecting pipe port Pipe dia 29 52 Outside line of product Mounting dimensio
22. tem perature gains access to the set temperature it becomes cool memory position Powerful Cooling Drying with setting on remote controller Ts 25 C i Cooling Drying with setting on remote controller i Ts 25 i Monitoring Follow to the Fan control in previous i mode when being selected again 24 32 To C O Fig 8 2 9 8 3 Temporary Operation Temporary Auto operation existence of Auto Restart and Temporary Cooling operation can be set by the TEMPORARY button of the indoor controller TEMPORARY ery button onn Table 8 3 1 TEMPORARY button Control OFF ON Temporary Auto operation start After pushing button for 3 seconds Auto Restart control select After pushing button for 10 seconds Temporary Cooling operation start 8 3 1 Temporary Auto Operation When the TEMPORARY button is pushed the Auto operation with set temperature fixed at 25 starts Controlling is same as that of Auto opera tion by the remote controller When the TEMPORARY button is pushed again the operation stops During Temporary Auto operation operation by the remote controller is accepted Using the Auto Restart function the Temporary Auto operation starts when power failure is reset 8 3 2 Temporary Cooling Operation When the TEMPOR
23. the minimum value of the outdoor heat ex changer during 10 to 15 minutes count time continued for 2 minutes or more d If the following three conditions are satis fied defrost operation Timer defrost starts after heating operation for 37 minutes Q Setting on remote control HEAT mode HIGH Fan 30 temp Room temp is 19 C to 24 and outside air temp is 5 C or lower Defrost operation has been already performed once 2 Defrost operation Operation of the compressor is stopped once turn off power coupler for four way valve after 10 seconds and then exchange the four way valve After 20 seconds restart operation of the compressor Turn off the outdoor fan just when the compressor stopped If temperature of the indoor heat exchanger lowered than 38 stop the indoor fan 2 Defrost reset Resetting operation from defrost to heating is performed when any one of the following conditions is satisfied a Temperature of the outdoor heat ex changer rose to 8 C or higher b A status that temperature of the outdoor heat exchanger is 5 C or higher contin ued for 80 seconds c Defrost operation continued for 10 min utes In resetting defrost operation the compressor stops for 50 seconds if defrost has started under condition a to c in item 1 but the compressor is reset to heating operation keeping operated if defrost has started under condition d in item 1 5 Louver
24. 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 212 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 Accordingly the tools to be used are classified into the following three types 1 Tools exclusive for R410A Those which cannot be used for conventional refrigerant R22 2 Tools exclusive for R410A but can be also used for conventional refrigerant R22 3 Tools commonly used for R410A and for conventional refrigerant R22 The table below shows the tools exclusive for R410A and their interchangeability Tools exclusive for R410A The following tools for R410A are required Tools whose specifications are changed for R410A and their interchangeability R410A air conditioner Conventional air installation conditioner installation Existence of Whether Whether new equip new equipment conventional ment can be used with for R410A equipment can conventional refriger be used ant Used tool Flare tool Pipe flaring Copper pipe gauge for Flaring by adjusting projection conventional flare margin tool Torque wrench Connection of flare For 12 7 nut Gauge manifold Evacuating refriger ant cha
25. until it touches the horizontal louver and remove it from the indoor unit by turning it To assemble the front panel gt 1 Fix the two screws to secure the front panel 2 Close the screw caps as they were 3 Press four places where are the center right end left end and lower portions of the air outlet 4 Check the gap between the front panel and the main unit If cooling or drying operation is performed without pressing the center of the air outlet the surface of the front panel may be covered with frost and have a waterdrop Remarks Electrical part assembly Perform the process above Remove the screw securing the shield metal plate Remove the electrical part cover by pressing the nail located on upper portion of the electrical part cover Remove the drain guide Remove the screw securing to the end plate of the heat exchanger 6 Remove the connector 5p for the fan motor and the connector 6p for the louver motor from the microcomputer assembly 7 After unhooking the electrical part base by press ing the fixing nail located on its lower portion draw the electrical part base out toward you to remove it from the main unit 8 Pull the TC sensor out from the holder of the heat exchanger 9 Dress the connecting cable securely as shown in the right illustration Improper dressing will cause water leakage Screw Upper nail Electrical part cover When assembling dress the connec
26. value 8 1 3 Power Factor Improvement Control Power factor improvement control is performed mainly aiming to reduce the current on much power consumption of cooling heating operation Control ling starts from the time when input power has reached at a certain point To be concrete IGBT of the power factor improvement circuit is used and the power factor is improved by keeping IGBT on for an arbitrary period to widen electro angle of the input current 24 8 1 4 Prevent Freezing Control The indoor heat exchanger sensor detects refriger ant vapor temperature in COOL DRY operation Ifthe temperature is below the specified value compressor motor speed is reduced so that opera tion is performed in temperature below the specified value to prevent freezing of indoor heat exchanger 8 1 5 P M V Pulse Modulating Valve Using P M V refrigerant flow of refrigeration cycle is varied for the optimum temperature Controlling each unit separately by two P M V corresponds to difference of pipe length fan speed and unit tem perature After the power has been turned on when a serial operation signal is received from indoor at the first time or when PMV alarm is detected and the equipment is reactivated move the valve once until it hits on the stopper for positioning of the valve In this case ticktack sound may be heard 8 1 6 Louver Control 1 Vertical air flow louvers Positions of vertical air flow louvers a
27. when trouble is detected on Return serial signal and normal status when signal is reset 1 Check outdoor heat exchanger temp sensor TE 2 Check board When 20 seconds passed after start position detect circuit error occurred Replace compressor 1 Repeat Start and Stop with interval of approx 10 to 40 minutes Code is not displayed during operation Supply gas Check also gas leak Unit operates normally during check If Return serial signal does not stop between indoor terminal block 2 and 3 replace inverter P C board If signal stops between indoor terminal block 2 and 3 replace indoor P C board Compressor does not rotate Current protective circuit does not operate when a specified time passed after compressor had been activated Discharge temp exceeded 117 Displayed when error is detected Displayed when error is detected Trouble on compressor Trouble on wiring of compressor Missed phase Check dischage temp sensor TD Degassing Trouble on P M V Break down of compressor Four way valve inverse error TC sensor value lowered during heating operation Operation continues 45 Displayed when error is detected Check power voltage 220 30 40 V 10 Overload operation of refrigeration cycle Check installation condition Short circuit of outdoor diffuser 1 Check four valve operation 10 5 J
28. will acknowledge the instruction and beep three times When the system is stand by not operating Operation Push the TEMPORARY button Stand by continuously more than three seconds The system starts to operate The orange light goes on about three seconds after The unit beeps three times The green light goes on The system is operating If the system is not required to run at this time push the TEMPORARY button once more or use the remote controller and the unit will stop When the system is operating Operation Motion Push the TEMPORARY button Operating The orange light goes on continuously more than three 4 seconds The system stops to operate The orange light goes off about three seconds after The unit beeps three times L The system stops If the system is not required to stop at this time use the remote control ler and to restart During subsequent operation the green light goes on 8 4 3 In Case of Power Failure during the 2 If OFF TIMER operation is reserved without Timer Operation setting of Auto Restart operation the reservation MM is cancelled with power failure 1 If ON TIMER operation is reserved with setting The OPERATION lamp on the main unit goes of Auto Restart operation it is cancelled with on and off to inform of power failure In that power failure The OPERATION lamp on the case try to reserve OFF TIMER
29. 3T70001 Front Panel Assembly Horizontal Louver for Service 202 43T00044 Assembly Grille Suction 213 43T21003 L3 Motor Stepping 206 43T07021 Screw Cap L S 239 43T62002 Cover Up Terminal 245 43T01002 Mark gt lt 209 43719004 Accepted Signal Filter 208 10YKV E 43708106 LED Panel 238 43T62020 203 43T80001 2 72 Cover E Parts Air Filter L LED Panel 204 2 242 Air Filter 43T62004 246 85061 Shield Cover x 7 Manual TURN 231 43T03001 Rear Plate 228 43T20007 Fan Cross Flow 233 43T82001 Installation Plate 230 43T39003 Base Bearing 43T49023 Holder of Plate 221 of EVA SEAL 43T49028 229 zm Plate EVA SEAL 43T22002 Bearing 215 236 43T69044 43144024 Remote Controller Refrigerant Cycle Assembly 43T39001 Motor Band Right 220 216 43149003 227 43721010 43 47006 Spring Fan Motor Pipe Delivery 22 225 43739002 J A Band Left 241 43T62003 43T39010 Cord Clamp AAS Drain Guide UP 217 43747005 ot oo s Holder Remote Pipe Suction 219 43119003 218 43749007 Controller Holder Sensor Pipe Shield TURN 1 43005368 2 43005369 Cabinet Back Assembly Cabinet Upper 8 Assembly 43019903 Hanger 19 7 43058264 43062230 Reactor I Cover Wiring 21 4302C019 J JU Pis Motor Fan DC C 23 43020310 2 Fan Propeller 2 22 Farg
30. 702 43050334 Sensor TD 4 705 4306A044 Terminal block 9P
31. 8mm Deoxidized copper pipe Outer dia 6 35 Thickness 0 8 Sectional shape of heat insulator E T1 Temp measurement Max 15m Allowable height difference 10m Allowable pipe length 4 way valve CHV 0213 i Muffler DA91A1F 44F Outdoor heat exchanger Split capillary roo 015 X 2006 1 2 Temp measurement T2 rare 55 x 2006 TE Co Ol Muffler Strainer A Pulse modulating me L Propeller fan Refrigerant amount 0 8kg OUTDOOR UNIT NOTE Wb Gas leak check position Refrigerant flow Cooling Refrigerant flow Heating NOTE The maximum pipe length of this air conditioner is 15 m The additional charging of refrigerant is unneces sary because this air conditioner is designed with charge less specification 19 6 2 Operation Data lt Cooling gt Temperature condition C Model name Indoor Outdoor Heat exchanger Standard pipe temp pressure P MPa Compressor revolution rps Outdoor fan mode Indoor fan mode T1 T2 C 27 19 35 lt Heating gt Temperature condition C Model name indoor Outdoor Standard pressure P MPa Compressor revolution rps Heat exchanger E p Ti T2 Outdoor fan m
32. ARY operation button keeps pushed for 10 seconds Cooling operation of which compressor motor speed and the indoor fan speed are fixed starts Compressor motor speed 10 30 rps 13 30 rps Indoor fan speed Low When the TEMPORARY operation button is pushed again the operation stops Auto Restart function is unavailable 8 4 Auto Restart Function This unit is equipped with an Automatic restarting facility which allows the unit to restart and resume the set operating conditions in the event of a power supply shutdown without the use of the hand control The operation will resume without warning three minutes after the power is restored The Auto Restart function is set not to work on shipment from the factory and so it is necessary to set it to function as required When the system is stand by not operating Operation Push the TEMPORARY button Stand by continuously more than three 4 seconds TEMPORARY When the system is operating Operation Push the TEMPORARY button Operating continuously more than three seconds TEMPORARY f During subsequent operation the orange light goes on The Auto Restart function will not accept an instruction if timer operation with the remote controller is selected The system starts to operate about three seconds after The unit beeps three times The system stops to operate
33. FUL NOT TO GET THE SPECIFIED REFRIGERANT R 22 WITH ANY OTHER GASEOUS BODY INTO THE REFRIG ERATION CYCLE IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLATION WORK IMMEDIATELY LET FRESH AIR INTO THE ROOM IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE IT CAUSES GENERATION OF POISONOUS GAS Never modify this unit by removing any of the safety guards or by by passing any of the safety interlock switches Do not install in a place which cannot bear the weight of the unit Personal injury and property damage can result if the unit falls Before doing the electrical work attach an approved plug to the power supply cord 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 Exposure of unit to water or other moisture before installation will result in an electrical short Do not store in a wet basement or expose to rain or water After unpacking the unit examine it carefully for possible damage Do not install in a place that can increase the vibration of the unit Do not install in a place that can amplify the noise level of the unit or where noise and dischar
34. Judgment of trouble by every symptom Firstly use the method 1 for diagnosis Then use the method 2 or 3 to diagnose the details of troubles ud 10 3 Judgment 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 Indoor indication lamp flashes Which lamp does flash NOTES OPERATION L ECONO TIMER PRE DEF Table 10 3 1 Block display Green Flashing display 1 Hz Description for self diagnosis Power failure when power is ON OPERATION L ECONO TIMER PRE DEF 1 6 Flashing display 5 Hz OO Protective circuit operation for indoor P C board OPERATION L ECONO TIMER PRE DEF 1 6 TIMER Yellow Flashing display 5 Hz diy ka Protective circuit operation for connecting cable and serial signal system OPERATION L ECONO TIMER PRE DEF 6 PRE DEF Orange Flashing display 5 Hz AN Protective circuit operation for outdoor P C board OPERATION L ECONO TIMER PRE DEF I OPERATION Green TIMER Yellow PRE DEF Orange Flashing display 5 Hz Protective cir
35. P button Does the transmission indicator light YES NO Is there any receiving sound and operation YES NO Replace P C board Replace the battery Remote controller is failure Normal 49 10 5 2 Wiring Interconnecting and Serial Signal Wire 1 Outdoor unit does not operate 1 Is the voltage between 2 and 3 of the indoor terminal block varied Confirm that transmission from indoor to outdoor is correctly performed based upon the following dia gram NOTE Measurement should be performed 2 minutes and 30 seconds after starting of the operation Be sure to prepare a diode for judgment Terminal block at indoor side Red 3 O O S5277G or equivalent G or J type S5277G Diode with rated voltage of 400V White or more is acceptable D Terminal block Tester Normal time Voltage swings between DC15 60V Abnormal time Voltage does not vary 2 Outdoor 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 Gas circulation amount is down Measure gas pressure Gas shortage Gas leak Pipe clogging Thermo operation of compressor 2 If the unit stops once it does not operate until the power will be turned on again To
36. Thickness Table 2 2 6 Flare and nut dimensions for 22 diameter mm width diameter mm 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 When choosing the tightening torque comply with values designated by manufacturers Table 2 2 7 b Correctly align the processed flare surface shows reference values with the union axis a Make sure that the flare and union portions do not have any scar or dust etc Note When applying oil to the flare surface be sure to use oil designated by the manufacturer If any other oil is used the lubricating oils may deteriorate and cause the compressor to burn out c Tighten the flare with designated torque by means of a torque wrench The tightening torque for R410A is the same as that for conventional R22 Incidentally when the torque is weak the gas leakage may occur Table 2 2 7 Tightening torque of flare for R410A Reference values Tightening torque of torque wrenches available on the market Nem Nominal Outer diameter Tightening torque diameter mm Nem 14 to 18 140 to 180 16 160 18 180 33 to 42 330 to 420 50 to 62 500 to 620 63 to 77 630 to 770 2 3 Tools 2 3 1 Required Tools The service port diameter of packed valve of the outdoor
37. and Chips If the flared section has chips or burrs refrigerant leakage may occur Carefully remove all burrs and clean the cut surface before installation Insertion of Flare Nut Flare processing dimensions differ according to the type of flare tool When using a con ventional flare tool be sure to secure dimen Make certain that a clamp bar and copper sion A by using a gauge for size adjustment pipe have been cleaned d Flare Processing By means of the clamp bar perform the flare processing correctly Use either a flare tool for R410A or conven tional flare tool Fig 2 2 1 Flare processing dimensions Table 2 2 3 Dimensions related to flare processing for R410A Nominal rece Thickness Conventional flare tool diameter mm Flare tool for R410A mm clutch type Clutch type Wing nut type 0 to 0 5 1 0 to 1 5 1 5 to 2 0 0 to 0 5 1 0 to 1 5 2 0 to 2 5 15 88 0 to 0 5 1 0 to 1 5 2 0 to 2 5 Table 2 2 4 Dimensions related to flare processing for R22 Outer diameter mm Thickness mm Nominal diameter Flare tool for 410 Conventional flare tool clutch type Clutch type Wing nut type 3 8 9 52 0 8 0 to 0 5 0 5 to 1 0 1 0 to 1 5 0 8 0 5 to 1 0 1 0 to 2 0 Table 2 2 5 Flare and flare nut dimensions for R410A 1 2 Dimension mm Flare nut j diameter width w se o s s es n 3 8 9 52 0 8 13 2 13 5 9 7 20 22 1 2 12 70 0 8 16 6 16 0 12 9 23 26
38. and has a contact separation of at least 3 mm must be incorporate in the fixed wiring An approved circuit breaker or switches must be used 2 Connection with power supply plug Attach power supply plug with power cord and plug it into wall outlet An approved power supply cord and plug must be used NOTE Perform wiring works so as to allow a generous wiring capacity 9 2 4 Wiring Connection How to remove the front cabinet Vertical air flow louver Fig 9 2 6 How to open the screw cap How to connect the connecting cable Wiring of the connecting cable can be carried out without removing of the front cabinet 1 Remove the front cabinet Fully open the front cabinet Disengage the support arm located in the upper center while pushing its handle leftwards and then remove the panel toward you 2 Remove the terminal cover and cord clamp 3 Insert the connecting cable according to local cords into pipe hole on the wall Take out the connecting cable through the cable slot on the rear panel so that it is exploded by about 15 cm long in the front side Insert the connecting cable fully into the terminal block and secure it by screw tightly Tightening torque 1 2 Nem 0 12 Secure the connecting cable with the cord clamp Fix the wiring cover rear plate bushing and front cabinet on the indoor unit gt OND Be sure to refe
39. art for evacuating Perform evacuating for about 15 minutes if the piping length is 20 meters 15 minutes for 20 meters assuming a pump capacity of 27 liters per minute Then confirm that the compound pressure gauge reading is 101 kPa 76 cmHg P 5 Close the low pressure side gauge valve handle of gauge manifold 6 Open fully the valve stem of ee the packed valves both side 2 of Gas and Liquid For R410A oniy 7 Remove the charging hose from the service port 8 Securely tighten the caps on the packed valves lt Manifold valve Handle Hi Handle Lo Keep full closed Charge hose For R410A only revention Connecting pipe For 410 only Packed valve at liquid side Packed valve at gas side Service port Valve core Setting Fig 9 3 6 CAUTION KEEP IMPORTANT 4 POINTS FOR PIPING WORK 1 Take away dust and moisture Inside of the connecting pipes 2 Tight connection between pipes and unit 3 Evacuate the air in the connecting pipes using VACUUM PUMP 4 Check gas leak connected points 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 SOT GEN Hexagonal as side 812 7 mm 5 0 to 6 2 kgf m EAE Em Tem 09 52 mm 3 t
40. ation when TD detect value becomes 105 C or lower Operation stop zone Release of motor speed Normal operation zone Fig 8 2 3 Compressor motor speed control 28 8 operation control When the button of the remote control ler is pushed quiet and mild operation is per formed by restraining air flow and operating motor speed 1 Indoor air flow is controlled between SUL and L Low air 2 Setting 10 at 16 rps and 13 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 operation had started Compressor motor speed Air volume cemere 2 5 1 m SUL 13 rps 13 rps 1 5 5 1 0 5 1H 2H Time Fig 8 2 4 8 2 2 DRY Operation The Remote Controller MODE Button is Set to the DRY Position Once the setting is made the operation mode is g memorized in the microcomputer so that the 9 same operation can be effected thereafter simply E by pushing START STOP button Dry operation signal is transmitted to outdoor unit The Cooling operation giving priority to dehumidi 5 fying which restrains the indoor fan speed and motor speed is performed The indoor fan motor operates as shown in Fig Set 0 8 2 5 Fan speed
41. board hold the whole Infrared ray receiving circuit LED housing Do not pull at the lead wire To check defect of the P C board follow the procedure described below 53 3 Check procedures Table 10 8 1 Procedure Check point Symptom Causes Shut off the power supply and 1 15 the fuse blown 1 Application of shock voltage remove the P C board assembly Overload by short circuit of the from the electronic parts base parts Remove the connecting cable from the terminal block Remove the connector for the Voltage check 1 AC power cord is defective motor and turn the power on 1 Between TP1 and TP2 Poor contact of the terminal plate If the OPERATION lamp flashes 220 230 240 AC Miss wiring of the power relay 0 5 sec ON 0 5 sec OFF when 2 Between TP2 and pin 1 of CNO4 2 Fuse is defective the power turning on the checking 220 230 240 points described as 1 5 of right 3 Between TP2 and pin 3 of CN04 column are not necessary to 20 230 240 4 01 15 is defective perform Line filter 101 is defective 810 340V DC Resistor RO1 is defective 3 Operation of the thermal fuse 5 Between 35V and GND Diode DBO1 is detective 6 Between 12V and GND 5 01 ICO2 01 are defective 7 Between 5 V and GND 6 1 ICO2 T01 are defective 7 1C01 ICO2 T01
42. by hand in no operating status 2 pulses one turn cooling to high fan YES Replace the control board ER NO Repair the bearing of the cross flow fan Operation Check Item Considerable main cause Measures Turn off the power supply and turn it on after removing the motor from the board Is the voltage of DC35V measured between 1 and 2 GND of the motor connector CN10 YES NO Replace the fan motor Replace the board Item by symptom Replace the board 4 Indoor fan motor starts rotating turning on power supply alone Operation may be normally performed selected by operation on the remote controller lt Cause gt IC is built in the indoor fan motor therefore P C board is also mounted to inside of the motor If soldering of P C board in the motor is defective or IC is defective the fan motor may rotate by only inputting the power turning on power supply lt Confirmation procedure gt 1 Remove the front panel Remove 2 screws and clicks 2 Remove cover of the fan motor lead wire 1 click 3 Check the voltage DC using CN10 connector while the fan rotates NOTE Do not disconnect the connector while the fan rotates Usea 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 boar
43. cal knowledge it must be performed by a person qualified In order to prevent the oxide film from occurring in the pipe interior during brazing it is effective to proceed with brazing while letting dry Nitrogen gas N2 flow Never use gas other than Nitrogen gas 1 Brazing method to prevent oxidation D Attach a reducing valve and a flow meter to the Nitrogen gas cylinder Use a copper pipe to direct the piping material and attach a flow meter to the cylinder Apply a seal onto the clearance between the piping material and inserted copper pipe for Nitrogen in order to prevent backflow of the Nitrogen gas When the Nitrogen gas is flowing be sure to keep the piping end open 5 Adjust the flow rate of Nitrogen gas so that it is lower than 0 05 m Hr or 0 02 MPa 0 2kgf cm by means of the reducing valve 6 After performing the steps above keep the Nitrogen gas flowing until the pipe cools down to a certain extent temperature at which pipes are touchable with hands Remove the flux completely after brazing Flow meter Stop valve Nitrogen gas cylinder From Nitrogen cylinder _ gas Rubber plug Fig 2 5 1 Prevention of oxidation during brazing nda 3 1 Indoor Unit 3 CONSTRUCTION VIEWS RAS 10YKV E RAS 13YKV E Air inlet 265 Air outlet Air filter Heat exchanger External length
44. changer If temperature is 7 C or higher return the operation to the above item 1 3 Current release control The input current of compressor and outdoor fan motor Precisely inverter main circuit control section which occupy most of air conditioner input is detected by the outdoor current sensor and compressor motor speed is gradually lowered so that current value does not exceed 9 0A if current value exceeds 9 0A When the current value lowers to 8 5A return the opera tion to the above item 1 Comp motor 9 0 speed down Comp motor speed keep Current value A Normal control Fig 8 2 2 4 Outdoor temperature release control The outdoor temperature release is controlled by changing the current release points 9 0 and 8 5 in the above item according to temperature detected by the outdoor temperature sensor For example if the outdoor temperature is 43 C the value of current release point becomes 8 0A 27 5 Limit for maximum compressor motor speed by indoor fan speed When outdoor temperature sensor detected 32 C or lower and indoor heat exchanger sensor detected 17 C or lower the maximum compressor motor speed is limited by the indoor fan speed For example the compressor motor speed is limited as described in the table below Table 8 2 1 RAS 10YKV E RAS 13YKV E rps rps Air flow rate HIGH M MED L L UL SUL 6 Louver co
45. control EX uS The vertical air flow louvers are automatically set to heating position or heat memory position When the compressor is turned off by high temp release control the vertical air flow louvers close once and then return to the position of previous time 8 2 4 Automatic Operation 1 As shown in Fig 8 2 9 the operation mode COOL DRY HEAT is selected according to the outside temperature and room temperature when the operation has started The operation in Fan mode continues until an operation mode is selected If the room temperature is 20 C or higher when AUTO operation started within 2 hours after HEAT operation had stopped select an opera tion mode after Fan operation of ultra low fan In AUTO operation the set temperature of each operation can be corrected by the remote controller in the range of 17 to 30 C TA 28 26 24 23 Heating with setting on remote controller Ts 25 C 20 Ts correction by outside 5 15 18 temperature ATo 2 2 After selecting the operation mode COOL HEAT select an operation mode again when a status that the compressor was turned off by the room temperature or outside air temperature continues for 15 minutes Powerful Cool mode control When the outside temperature is above 32 and indoor temperature is above 28 C select Cool mode control In Cool mode the air flow louver directs downward When the room
46. controller Operation mode set on the remote control Compressor revolution command signal defined by indoor temperature and set temperature Correction along with variation of room temperature and correction of indoor heat exchanger temperature are added For these two types of signals Operation mode and Compressor revolution the outdoor unit controller monitors the input current to the inverter and performs the followed operation within the range that current does not exceed the allowable value Temperature of indoor heat exchanger by indoor heat exchanger sensor Minimum revolution control 4 Contents of operation command signal Serial signal from outdoor unit controller to indoor unit controller The following signals are sent from the outdoor unit controller The current operation mode The current compressor revolution Outdoor temperature Existence of protective circuit operation For transferring of these signals the indoor unit controller monitors the contents of signals and judges existence of trouble occurrence Contents of judgment are described below Whether distinction of the current operation status meets to the operation command signal Whether protective circuit operates When no signal is received from the outdoor unit controller it is assumed as a trouble 8 1 1 Capacity Control The cooling and heating capacity is varied by changing compressor motor s
47. cuit operation for others including compressor 1 The contents of items B and C and a part of item E are displayed when air conditioner operates 2 When item B and C and item B and a part of item E occur concurrently priority is given to the block of item B 3 The check codes can be confirmed on the remote controller for servicing 42 10 4 Self Diagnosis Remote Controller Check Code 1 The self diagnosis by the check code is performed while items B to E blocks are displayed 2 When turning the operation mode on the remote controller to the service mode and operating the remote controller the controller of the indoor unit can self diagnose operation of the protection circuit by displayed contents check code on the remote controller by whether all the lamps flash 5Hz and the receiving sound Pi Pi Pi for 10 seconds is heard The timer lamp usually flashes 5Hz during self diagnosis 10 4 1 Self Diagnosis MODE TEMP FAN m ME Tr 70 LOW OR SL OL tle ven HON OFF TIMER py HIGH Y TEMP AUTO 218 OCO MODE ECONO e C RRR Alphanumeric characters are used for the check codes 5 is 5 is 6 is A h is B d is D OTIMER 4 Push the CHK button by something with thin edge e Check is displayed in the indication part of the remote control
48. d P C board 5 4 Blue Measure the voltage of the motor connector 3 Yellow CN10 pin GND Black and pin 3 V line Yellow 2 Black under condition that the indoor fan rotates 1 Red e Above DC 0 4V P C board is defective Below DC 0 4V 48 5 How to whether remote controller is good or bad Operation Check Items Considerable main cause Measures Item by symptom Push the START STOP button Does the transmission indicator of remote controller light Is there direct sunlight on the receptor of the air conditioner Is there any thyristor fluorescent light near by YES There is no beep from the indoor unit The operation lamp of the air conditioner main unit does not light Take out the batteries and insert them again rear side of remote controller Is operation possible when the transmitter is moved nearer to the infrared signal receiver of the air conditioner Battery life Is Temporary Cool operation possible when keeping the temporary switch of the air conditioner main unit pressed for 10 seconds or more Can any signal tone be heard in a transistor radio when transmitting within 5cm distance from the radio NO Keep the air conditioner away from thyristor fluorescent light Avoid direct sunlight Push the START STO
49. d may cause a rupture or personal injury INDOOR unit Liquid side OUTDOOR unit Opened Gas side Refrigerant cylinder With siphon pipe Check valve Closed OF KK Open Close valve for charging Service port Electronic balance for refrigerant charging Fig 2 4 1 Configuration of refrigerant charging di sure to make setting 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 Cylinder with siphon Gauge manifold OUTDOOR unit cylinder Electronic balance R410A refrigerant is mixed refrigerant Therefore if it is charged with gas the compo sition of the charged refrigerant changes and the characteristics of the equipment varies Fig 2 4 2 jueJeDujeH Electronic balance Cylinder without siphon Gauge manifold OUTDOOR unit Siphon 2 5 Brazing of Pipes 2 5 1 Materials for Brazing 1 Silver brazing filler Silver brazing filler is an alloy mainly composed of silver and copper It is used to join
50. d nuts if the unit is likely to be exposed to a strong wind 600 anchor bolts If it is necessary to N the defrost water attach drain nipple to the bottom plate of the outdoor unit before installing it Diffuser Drain hole Fig 9 1 2 Part Installation plate x 1 f f Part No Mounting screw 04 x 25 x 6 Part name Q ty Name Owner s manual Others Wireless remote controller x 1 Purifying filter x 1 Installation manual Battery x 2 Qe Deodorizing filter x 1 This model is not equipped with an extention drain hose Option Remote controller holder x 1 Pan head wood screw 3 1x 16 x 2 Om For the extention drain hose use an optionally available RB 821SW or commercially available one 9 1 4 Installation Servicing Tools Changes in the product and components In the case of an air conditioner using R410A in order to prevent any other refrigerant from being charged accidentally to service port diameter of the outdoor unit control valve 3 way valve has been changed 1 2 UNF 20 threads per inch n order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size of opposite side of flare nuts has been changed for copper pipes with nominal dimensions 1 2 and 5 8 New tools for R410A New
51. e Nut Flange 5 43042461 33 43032441 Drain Nipple 3 43005401 Cabinet Front Assembly 43097204 6 4301V012 WU 95 Cover Valve Packed 43049643 Cushion Rubber Base Assembly 31 43046344 TURN Valve 4 way 17 43046351 Valve Pulse Modulating 32 43046348 18 43046378 Solenoid Coil Coil P M V 11 43046382 Valve Packed 6 35 13 43147196 Bonnet 1 4 IN 12 43046383 75 US 75 AAP USUS US 10 43043644 l 2 Valve Packed 9 52 Condenser amp 4 28 43063195 14 43047401 Assembly Holder Thermo Bimetal Bonnet 3 8 IN 20 43050298 Thermo Bimetal CS 7 9 43041607 Upper 1 43005368 Cabinet Back 4301 030 Assembly Guard Fan EE 22 43047549 od Nut Flange JS older Sensor 27 43063198 Holder Sensor 29 43019904 Holder Sensor 23 43020310 Fan Propeller 5 43042461 Base Assembly 29 43019904 15 43047491 Holder Sensor Tube Capillary 1 0 1 5 704 43060726 TURN Fuse 15A 250V Lead Type 708 4306S230 707 43063306 PC Board Assembly 703 43060052 Heatsink MCC 808 Fuse 25A 250V Lead Type 701 43050382 Sensor TC F6 gt Sensor 026 P TE Sensor 26 ss TS Sensor Bie 24 TD Sensor 706 43062215
52. ed because supplying power to the outdoor unit is not interrupted After positioning of the valve activate the compressor and the outdoor fan It takes approx 7 seconds for positioning of the valve and sound ticktack hitting sound to stopper is heard for approx 0 5 seconds at least of that period As the sound is low check sound by using screwdriver etc NO Replace coil valve YES Are temp sensors of indoor outdoor units correctly set to the holder NOTE The temperature sensors which are used to control electronic control valve include indoor heat exchanger sensor TC outdoor heat exchanger temp sensor TE and outdoor suction temp sensor TS YES Gas amount check and valve clogging check NO Set it correctly Remove TC sensor connector from the P C board in indoor unit Remove connector from the P C board Operate the air conditioner in COOL mode by TEMP button Pi sound is heard if keeping pushed for 10 seconds The operation enters temporary operation mode which fixes opening degree of P M V and No of revolution of compressor Check condensation at outlet of P M V and then check operating pressure from the service port Existence of condensation at outlet of P M V YES If there is condensation at outlet 1 4 inch 6 35mm valve side the valve is clogged Check the operating pressure from service port and add gas if pressure is low Add gas
53. efrigerant R410A The refrigerant name 410 is indicated on the visible place of the outdoor unit of the air condi tioner using R410A as refrigerant To prevent mischarging the diameter of the service port differs from that of R22 If a refrigeration gas leakage occurs during installation servicing be sure to ventilate fully If the refrigerant gas comes into contact with fire a poisonous gas may occur When installing removing air conditioner do not allow air or moisture to remain in the refrigeration cycle Otherwise pressure in the refrigeration 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 large volume of refrigerant is installed in a small room it is necessary to exercise care so that even when refrigerant leaks its concentration does not exceed the marginal level If the refrigerant gas leakage occurs and its concentration exceeds the marginal level an oxygen starvation accident may result Be sure to carry out installation or removal according to the installation manual Improper installation may cause refrigeration trouble water leakage electr
54. efrigerant Cycle Assembly Pipe Delivery Pipe Suction Pipe Shield Holder Sensor Spring Plate EVA SEAL zc No Description 43T49023 43T79002 43T39002 43T39001 43T21010 43T20007 43T22002 43T39003 43T03001 43T07002 43T82001 43T69044 43T63002 43T62020 43T62002 43T62003 43T62004 43T39010 43T49024 43T01002 43T85061 Holder of Plate of EVA SEAL Drain Guide Motor Band Left Motor Band Right Fan Motor Fan Cross Flow Bearing Base Bearing Rear Plate Pipe Holder Installation Plate Remote Controller Holder Remote Controller Cover E Parts Cover Up Terminal Cord Clamp Shield Cover Drain Guide UP U Pipe Holder Mark Manual 12 2 Outdoor Unit RAS 10YAV E RAS 13YAV E Part No Description 43005368 43005369 43005401 4301V030 43042461 4301V012 43062230 43019903 43041607 43043644 43046382 43046383 43147196 43047401 43047491 43046351 Cabinet Back Assembly Cabinet Upper Assembly Cabinet Front Assembly Guard Fan Base Assembly Cover Valve Packed Cover Wiring Assembly Hanger Compressor Condenser Assembly Valve Packed 6 35 Valve Packed 9 52 Bonnet 1 4 IN Bonnet 3 8 IN Tube Capillary 1 0 1 5 Valve Pulse Modulating E il gt 4 Y SS SYST ERRARE VS GS GS US UN SS JG IT g Description
55. er right end Q left end and the lower center of the air outlet and confirm that no gap is left between the front cabinet and the rear plate If cooling dry operation is made without pushing the air outlet dew can be deposited on the front cabinet surface In addition Push Push Push between the front cabinet and the rear plate will become wilder RS spoiling the apperance Fig 9 2 10 9 2 5 Piping and Drain Hose Installation In case of rightward piping After scribing slits of the ent cabinet front cabinet and the rear panel by a knife or a marking off pin cut them by a pair of nippers or the like Fig 9 2 12 Slit rear panel In case of downward piping After scribing the slit of the front cabinet and slit in the lower part of the rear panel by a knife or a marking off pin cut them by a pair of nippers or the like Fig 9 2 13 Left hand connection with piping Bend the connecting pipe so that it is laid within 43 mm above the wall surface If the connecting pipe is laid exceeding 43 mm above the wall surface the indoor unit may unstably be set on the wall When bending the connecting pipe make sure to use spring bender so as not to crush the pipe Bend the connection pipe within a radius of 30 mm To connect pipe after installation of unit figure To the forefront of flare 196mm Z Liquid side Dem
56. g noise Indoor High Cooling Heating Medium Cooling Heating dBeA 34 35 Low Cooling Heating dBeA 30 30 Outdoor Cooling Heating 45 46 Indoor unit Unit model RAS 10YKV E Dimension Height mm 790 189 Net weight 8 Fan motor output Air flow rate Cooling Heating m h 480 520 Outdoor unit Unit model RAS 10YAV E Dimension 550 780 270 Net weight Compressor 750 Twin rotary type with DC inverter variable speed control DA91A1F 44F Fan motor output Air flow rate_ Cooling Heating m3 h Piping connection Type Flare connection Indoor unit Liquid side 06 35 Gas side Outdoor unit Liquid side 26 35 Gas side 9 52 Maximum length Per unit 15 Maximum chargeless length Maximum height ditference m 0 Refrigerant Name of refrigerant R410A Weight kg 8 kg Wiring connection 5 rm Usable temperature range Indoor Cooling Heating 21 32 0 28 TERT di Outdoor Cooling Heating 10 43 10 21 Accessory Indoor unit Wireless remote control Label Remote controller holder Pan head wood screw 2 03 1 x 16L Deodorizing filter Batteries Mounting screw 6 O4 x 25L Installation manual Owner s manual 1 Outdoor unit Drain nipple 1 The specifications may be subject to change without notice for purpose of improvement 5 20 k 5
57. ged air might disturb user s neighbors To avoid personal injury be careful when handling parts with sharp edges Please read the installation manual carefully before installing the unit It contains further important instructions for proper installation New Refrigerant Air Conditioner Installation To Disconnect the Appliance from the Mains Supply Power supply cord of parts of appliance for outdoor use shall be more than polychloroprene sheathed flexible cord design 7 RN F or cord designation 245 IEC 66 2 0mm or more For general public use Remark per EMC Directive 89 336 EEC For to prevent flicker impressions during the start of the compressor technical process following installation conditions do apply 1 The power connection for the air conditioner has to be done at the main power distribution This distribution has to be of an impedance Normally the required impedance is reached at a 32A fusing point Air conditioner fuse has to be 16A No other equipment has to be connected to this power line For detailed installation acceptance please refer to your contact with the power supplier it restriction do apply for products like washing machines air conditioners or electrical ovens For power details of the air conditioner refer to the rating plate of the product For the rear left and left piping 2 Clip anchor Wall 8 XD
58. ghten firmly the flare pipe connecting sections which connect the indoor and outdoor units Flare at up to the specified tightening torque unit side Incorrect connections may cause not only a gas leakage but also a trouble of the refrigeration cycle Outer dia of copper pipe 26 35 mm Half union Flare nut Externally Internalh ze Flare at threaded side threaded side Use wrench Use a torque wrench to secure to secure Fig 9 3 4 Fig 9 3 5 9 3 3 Evacuating After the piping has been connected to all indoor unit s you can perform the air purge together at once AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using vacuum pump Do not use the refrigerant in the outdoor unit For details see the manual of vacuum pump Use a vacuum pump Be sure to use a vacuum pump with counter flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops If inside oil of the vacuum pump enters into the air conditioner which adopts R410A a trouble of the refrigeration cycle may be caused 1 Connect the charge hose from the manifold valve to the Service port of the gas side packed valve 2 Connect the charge hose to the port of vacuum pump 3 Open fully the low pressure side handle of the gauge manifold valve 4 Operate the vacuum pump to st
59. he concave part at lower part of the coil to the positioning hole of the pulse modulating valve and then fix the coil The pulse modulating valve has A room side and B room side After mounting it check that coil at B room side Red marking is marked on the pulse modulat ing valve is connected to CN13 of the control board assembly Remarks Take out part of lead wire Coil inserting position Coil inserting position position Positioning hole Fan guard 1 Detachment 1 Perform work of item 1 of and 2 2 Remove the front cabinet and put it down so that fan guard side directs downward Perform work on a corrugated cardboard cloth etc to prevent flaw to the product 3 Remove the hooking claws by pushing minus screwdriver according to the arrow mark in the right figure and remove the fan guard 2 Attachment 1 Insert claw of the fan guard in the hole of the front cabinet Push the hooking claws 10 positions by hands and fix the claws All the attaching works have completed Check that all the hooking claws are fixed to the specified positions 66 Minus screwdriver Hooking claw Part name Replacement of temperature sensor for servicing only Common service parts of sensor TO TS TE TD These are parts for servicing sensors Please check that the accesso ries shown in the right table are packed
60. heck no refrigerant remains in the equipment ES When the compound gauges pointer has indicated 0 1 Mpa 76 cmHg place the handle Low in the fully closed position and turn off the vacuum pump s Connect the charge hose to packed valve service power switch port at the outdoor unit s gas side C ttheich h fth Keep the status as it is for 1 to 2 minutes and ensure OMENA UUN RUMP that the compound gauge s pointer does not return adapter Tar Set the refrigerant cylinder to the electronic balance o fully both packed valves at liquid and gas connect the connecting hose to the cylinder and the pees connecting port of the electronic balance and charge liquid refrigerant Place the handle of the gauge manifold Low in the For refrigerant charging see the figure below fully opened position and turn on the vacuum pump s power switch Then evacuating the refrigerant in the cycle Never charge refrigerant exceeding the specified amount Q If the specified amount of refrigerant cannot be charged charge refrigerant bit by bit in COOL mode Do not carry out additional charging When additional charging is carried out if refrigerant leaks the refrigerant composition changes in the refrigeration cycle that is characteristics of the air conditioner changes refrigerant exceeding the specified amount is charged and working pressure in the refrigeration cycle becomes abnormally high pressure an
61. i Gas Outward form N E R 30mm Use polisin polyethylene core Nor the like for bending pipe Z 2 EJ Use the handle of screwdriver etc Fig 9 2 14 43mi 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 Bind the auxiliary pipes two and connecting cable with facing tape tightly In case of leftward piping and rear leftward piping bind the auxiliary pipes two only with facing tape Indoor unit lt lt Connecting Installation plate Fig 9 2 15 Carefully arrange pipes so that any pipe does not stick out of the rear plate of the indoor unit Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wound on the connecting pipe to avoid double taping at the joint moreover seal the joint with the vinyl tape etc Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material When bending a pipe carefully do it not to crush it 9 2 6 Indoor Unit Fixing Pass the pipe through the hole in the wall and hook the indoor unit on the installation plate at the upper hooks Swing the indoor unit to right and left to confirm that i
62. ic shock fire etc Unauthorized modifications to the air conditioner may be dangerous If a breakdown occurs please call a qualified air conditioner technician or electrician Improper repair s may result in water leakage electric shock and fire etc 2 2 Refrigerant Piping Installation 2 2 1 Piping Materials and Joints Used For the refrigerant piping installation copper pipes and joints are mainly used Copper pipes and joints suitable for the refrigerant must be chosen and installed Furthermore it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants 1 Copper Pipes It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 40 mg 10 m Do not use copper pipes having a collapsed deformed or discol ored portion especially on the interior surface Otherwise the expansion valve or capillary tube may become blocked with contaminants As an air conditioner using R410A incurs pressure higher than when using R22 it is necessary to choose adequate materials Thicknesses of copper pipes used with R410A are as shown in Table 2 2 1 Never use copper pipes thinner than 0 8 mm even when it is available on the market Table 2 2 1 Thicknesses of annealed copper pipes Thickness mm 3 8 1 2 5 8 2 Joints copper pipes j
63. ing For spare Sensor Spring B For spare Thermal constringent tube Including one spare Color tape 9 colors Terminal 67 808 N Orn Ti _ 68 12 EXPLODED VIEWS AND PARTS LIST 12 1 Indoor Unit 1 RAS 10YKV E RAS 13YKV E 407 RAS 10YKV E 408 RAS 13YKV E WN WU S 5 AS Pan Description Part Description No p 43T60002 Terminal Block 3P 43T69062 P C Board Assembly AC 300V 20 MCC 772 10YKV E 43T69004 Sensor Heat Exchanger 43T69063 P C Board Assembly 10kQ 25 C 772 13YKV E 43T69005 Sensor Thermostat 43761001 Base E Parts 10kQ 25 C ABS Black UL94 5V 43T69031 PC Board Assembly 43T62006 Base Shield WRS LED MCC 766 SGCC Z08 LUB 69 Indoor Unit 2 RAS 10YKV E RAS 13YKV E No Description 43T00043 43T00044 43T80001 43T80002 43T07021 43T07020 43T08106 43T08107 43T19004 43T09035 43T09004 43T70001 43T21003 43T07001 43T44024 43T47006 43T47005 43T49007 43T19003 43T49003 43T49028 Front Panel Assembly Grille Suction Air Filter L Air Filter R Screw Cap L Screw Cap R LED Panel 10YKV E LED Panel 13YKV E Accepted Signal Filter Horizontal Louver Assembly for Service Louver Assembly Drain Hose Assembly Motor Stepping Bushing R
64. ing wire Microcomputer is defective Replace main board SW trans IC ICO1 for power supply or fan motor Motor is defective Be sure to disconnect the motor connector CN10 after shut off the power supply or it will be a cause of damage of the motor 2 Power is not turned on though Indoor P C board is replaced Confirmation procedure Turn on power supply Does operation lamp flash YES NO Is wired correctly to white and black lead wires of terminal block _ 46 To item of Power supply is not turned on 3 Only the indoor fan does not operate Turn off the power supply Turn on the power supply Does the fan stop in no operating status Control board is defective Start the operation with low fan setting in cool operation Is the DC 35V measured between 1 red lead wire and 2 black lead wire of the motor connector CN10 YES Turn off the power supply NO NO Does the fan rotate YES Change the setting of Does the cross flow fan rotate normally YES Turn on the power supply Does the fan speed X NO Operation become higher stops YES Is the rotation signal DC 5V 2 OV output between 4 blue lead wire and 2 black lead wire of the motor connector CN10 when rotating the cross flow fan
65. iron copper or copper alloy and is relatively expen Phosphor bronze brazing filler tends to react with sulfur and produce a fragile compound water solution which may cause a gas leak age Therefore use any other type of brazing filler at a hot spring resort etc and coat the surface with a paint When performing brazing again at time of servicing use the same type of brazing filler sive though it excels in solderability Phosphor bronze brazing filler Phosphor bronze brazing filler is generally used to join copper or copper alloy Low temperature brazing filler 2 3 Low temperature brazing filler is generally called solder and is an alloy of tin and lead Since it is weak in adhesive strength do not use it for refrigerant pipes 24122 2 5 2 Flux 1 Reason why flux is necessary By removing the oxide film and any foreign matter on the metal surface it assists the flow of brazing filler In the brazing process it prevents the metal surface from being oxidized By reducing the brazing fillers surface tension the brazing filler adheres better to the treated metal 2 Characteristics required for Activated temperature of flux coincides with the brazing temperature Due to a wide effective temperature range flux is hard to carbonize Itis easy to remove slag after brazing The corrosive action to the treated metal and brazing filler is minimum
66. is air conditioner has the structure designed to drain water collected from dew which forms on the back of the Wall indoor unit to the drain pan Therefore do not store the power cord and other parts at a height above the drain guide Drain guide Fig 9 2 20 9 3 Outdoor Unit 9 3 1 Installation Place A place which provides the spaces around the outdoor unit as shown in the left diagram A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration A place where the operation noise and discharged air do not disturb your neighbors A place which is not exposed to a strong wind A place free of a leakage of combustible gases A place which does not block a passage When the outdoor unit is to be installed in an elevated position be sure to secure its feet An allowable length of the connecting pipe is up 15m 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 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 Specially in windy area install the unit to prevent the admission of wind Installation in the following places may result trouble Do not install the unit such places A p
67. item of Compressor does not operate 3 The outdoor unit stops 10 minutes to 1 hour after operation started and an alarm is displayed Discharge temp error check code 03 1E Sensor temp error check code 02 1C Gas leak P M V is defective 2 4 Refer to the chart in 10 6 Miswiring of connecting wires of indoor outdoor units Clogging of pipe and coming off of TC sensor 50 10 6 Check Code 1 Miswiring in indoor outdoor units 1 lt Check procedure gt 1C Check Item Considerable main cause Gas leakage Discharge temp error disconnection of TS TC sensors Check code 02 1C gas leakage Check code 03 1E Item by symptom Valve drive check Is coil of the pulse modulation valve NO P M V correctly set Set it correctly YES lt NO Is connector of coil connected to inverter Set it correctly YES 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 controller the power keeps being supplied to outdoor unit for approx 3 minutes If operating the air conditioner by remote controller again just after all the operations stopped by the remote controller positioning of the valve is not performed when outdoor unit is activat
68. ize of wire and wiring method etc Every wire must be connected firmly NOTE Connecting cable e Wire type More than HO7RN F or 245 66 2 0mm or more 9 3 5 Gas Leak Test Flare nut connections Indoor unit Flare nut connections Outdoor unit Valve stem cap connection Service port cap connection Fig 9 3 9 Check the flare nut connections valve Stem cap connections and service port cap connections for gas leak with a leak detector or soap water 9 3 6 Test Operation To switch the TEST RUN COOL mode press TEMPORARY button for 10 sec The beeper will make a short beep TEMPORARY e er button Fig 9 3 10 9 3 7 Auto Restart Setting This product is designed so that after a power failure it can restart automatically in the same operating mode as before the power failure The product was shipped with Auto Restart function in the off position Turn it on as required How to Set the Auto Restart Press and hold down the TEMPORARY button for about 3 seconds After 3 seconds the electronic beeper makes three short beeps to tell you the Auto Restart has been selected To cancel the Auto Restart follow the steps described in the section Auto Restart Function of the Owner s Manual 10 HOW TO DIAGNOSE THE TROUBLE The pulse modulating circuits are mounted t
69. lace full of machine oil A saline place such as coast A place full of sulfide gas A place where high frequency waves are likely to be generated as from audio equipment O gt welders and medical equipment Fig 9 3 1 9 3 2 Refrigerant Piping Connection 1 Cut the pipe with a pipe cutter X X X Flaring un Obliquity Roughness Warp B Fig 9 3 2 2 Insert a flare nut into the pipe and flare the pipe Projection margin in flaring A Unit mm Rigid Clutch type Outer dia of copper pipe tool used 6 35 0 to 0 5 9 52 0 to 0 5 1 0 to 1 5 0 to 0 5 1 0 to 1 5 Imperial Wing nut type A Outer dia of copper pipe R410A 6 35 1 5 to 2 0 9 52 1 5 to 2 0 12 7 2 0 to 2 5 Conventional tool used 1 0 to 1 5 Tightening Connection Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers Then tighten the nut with a spanner and torque wrench as shown in the figure CAUTION Do not apply excess torque Otherwise the nut may crack depending on the conditions Unit N m Tightening torque 14 to 18 1 4 to 1 8 kgf m 09 52 mm 33 to 42 3 3 to 4 2 kgf m 012 7 mm 50 to 62 5 0 to 6 2 kgf m Tightening torque of flare pipe connections Pressure of 410 becomes higher than that of R22 Approx 1 6 times Therefore using a torque wrench ti
70. lation manual Owner s manual Outdoor unit Drain nipple The specifications may be subject to change without notice for purpose of improvement 1 2 Operation Characteristic lt Cooling gt Current A 7 4 x RAS 10YKV E RAS 13YKV E Conditions Indoor DB 27 C WB 19 C Outdoor DB 35 1 Air flow High length 5 230V 40 60 80 Compressor speed rps 0 20 100 Heating Current A 7 RAS 10YKV E RAS 13YKV E Conditions Indoor DB 20 C Outdoor DB 7 C WB 6 C 1 Air flow High Pipe length 5m 230V 0 20 40 60 Compressor speed rps 80 100 1 3 Capacity Variation Ratio According to Temperature Cooling Capacity ratio 96 105 100 95 90 85 80 75 70 65 60 Conditions Indoor DB27 C WB19 C Indoor air flow High Pipe length 5m 55 50 L 32 33 3 Outdoor temp Capacity ratio 100 2 7 kW RAS 10YKV E 100 3 7 kW RAS 13YKV E ratio 120 100 DE ie i OY R te ail ib sp Ta ep 4 Yo d ee oo RAStOYKV E RAS 13YKV E 5 m 80 one 70 stas Coi sor eo 20 Condiions 1 Indoor 20 Of ERE Indoor air flow High 12 Pipe length 5m 0033 7534 39 10 12 5 4 5 6 Outdoor temp C
71. ler Push toward the remote controller one by one If itis normal the receiving sound Pi is heard every pushing it and check code in the indication part of the remote controller changes The timer lamp of the air conditioner flashes 5 times for 1 second Check all of 35 check codes to 22 Y Push to return to the objective code if passed If a trouble occurs the receiving sound changes to Pi Pi Pi continues for approx 10 seconds Check the check code in the indication part of the remote controller 2 digits alphanumeric characters are displayed in the indication part of the remote controller All the lamps of the air conditioner flash 5 times for 1 second 05 5 release the self diagnosis function push button Display returns to one before check Fig 10 4 1 10 4 2 Operation Control by Rated Frequency in Service Mode In the service mode pushing ON or OFF operates the air conditioner by rated frequency of COOL or HEAT mode for 30 minutes Cooling function operates under condition of room temperature by 24 or more while heating function by 23 or less respectively 49 10 4 3 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 i
72. main circuit control section which occupy most of air conditioner input is detected by the outdoor current sensor The compressor motor speed is lowered gradu ally according to the range of TO outside air temp if the input current exceeds the current value determined in each zone as shown in Fig 8 2 8 so that the input current does not exceed the set value In case that the current lowered by approx 0 5A than each set value return to above item 1 zz TO 16 0 15 5 11 0 10 5 Outside air temp Fig 8 2 8 4 Defrost control 1 Detection of frost In heating operation time duration while the compressor operates is counted and defrost operation starts by any condition described below a The counted time is 28 minutes or more and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is 20 C or lower contin ued for 2 minutes or more b The counted time is 28 minutes or more and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is 7 or lower and temperature lowered by 2 5 than the minimum value of the outdoor heat ex changer during 10 to 15 minutes count time continued for 2 minutes or more c The counted time is 34 minutes or more and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is 5 or lower and temperature lowered by 3 0 than
73. n below Mn s Indoor unit gt Side view Indoor unit Reception Reception Remote range 7 Remote range controller controller Axial distance Fig 9 2 1 9 2 2 Cutting a Hole and Mounting Installation Plate Cutting a Hole When install the m refrigerant pipes 4 fN S from the rear The center of the piping slot is above the arrow The center of the pipe SEN hole is above the Pink nol N 80mm lt g 5E ac LF N Fig 9 2 2 1 After determining the pipe hole position on the mounting plate 80 mm gt drill the pipe hole 065 mm at a slight downward slant to the outdoor side NOTE When drilling the wall that contains a metal lath wire lath or metal plate be sure to use a pipe hole brim ring sold separately Mounting the Installation Plate For installation of the indoor unit use the paper pattern on the back Anchor bolt hole Pipe hole Pd L Installation Thread Mounting plate Weight screw Fig 9 2 3 Indoor unit When the installation plate is directly mounted on the wall 1 Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook up the indoor unit 2 To mount the installation plate on a concrete wall with anchor bol
74. n below For connecting pipes use new and clean piping materials with high pressure tight force which were made for R410A only so that water or dust does not enter Moreover do not use the existing piping because there are problems about pressure tight force and inner impurity in the existing piping 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 If this is not possible a power supply plug with earth must be used This plug must be easily accessible after installation The plug must be disconnected from the power supply socket in order to disconnect the appliance completely from the mains FOR USE BY QUALIFIED PERSONS ONLY TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK MAKE SURE ALL POWER SWITCHES ARE OFF FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK CONNECT THE CONNECTING CABLE CORRECTIY IF THE CONNECTING CABLE IS CONNECTED BY WRONG WAY ELECTRIC PARTS MAY BE DAMAGED CHECK THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD PLACE THE UNIT WELL AWAY MORE THAN 2M FROM HEAT SOURCES SUCH AS RADIATORS HEAT REGISTORS FURNACE STOVES ETC WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN BE VERY CARE
75. n 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 Block distinction Table 10 4 1 Operation of diagnosis function Check Block Indoor P C board etc Air conditioner status Cause of operation Short circuit or Operation disconnection of the room continues temperature sensor TA sensor Remarks Displayed when error is detected Judgment and action 1 Check the room temp sensor 2 When the room temp sensor is normal check P C board Being out of place disconnection short circuit or migration of heat exchanger sensor TC sensor Operation continues Displayed when error is detected 1 Check heat exchanger sensor 2 When heat exchanger sensor is normal check P C board Lock of indoor fan or trouble on the indoor fan circuit Displayed when error is detected 1 Check P C board 2 When P C board is normal check the motor Not displayed Connecting cable and serial signal Trouble on other indoor P C boards Operation continues Return serial signal is not Operation sent to indoor side from continues operation started 1 Defective wiring of connecting cable 2 Operation of compressor thermo Gas shortage Gas leak Operation command signal is not sent to outdoor side Operation continues dae
76. ng and in stability In starting In stability When 12 to 25 minutes passed after operation start and room temp is higher than set temp 3 When 25 minutes more passed after operation start Until 12 minutes passed after operation start When 12 to 25 minutes passed after operation start and room temp is 3 or lower than set temp FAN Room temp Set Room temp 2 Set Manual temp 4 C temp 3 5 C The outdoor unit controls the outdoor fan based upon the operation signal sent from the indoor unit and also controls revolution speed of the compres sor motor The power coupler 20 for four way valve is turned on and turned off in defrost operation 1 Heating capacity control Calculate the difference between temperature detected by room temp sensor every minute and the set temp set on Temp indicator and variation amount of room temp Then obtain the correction amount of the command signal and correct the current fre quency command signal 2 High temp release control If temperature of the indoor heat exchanger detected by the indoor heat exchanger sensor is 55 C or higher compressor motor speed is gradually lowered to prevent over temp rising of compressed pressure If temperature becomes below 48 C return to above item 1 3 Current release control The input current of compressor and outdoor fan motor Precisely inverter
77. ng screws 3 pcs holding by hands so that the fan motor does not fall Remarks Fan motor Propeller fan Compressor Perform work of item 1 of and Extract refrigerant gas Remove the partition board 5 1 04 x 10 2 pcs Remove the sound insulation material Remove terminal cover of the compressor and disconnect lead wire of the compressor thermo and the compressor from the terminal 6 Remove pipe connected to the compressor with a burner 7 Remove the fixing screw of the bottom plate and heat exchanger ST1T 4 x 100 1 pc 8 Remove the fixing screw of the bottom plate and valve clamping plate ST1T 4 x 10 2 pcs 9 Pull upward the refrigeration cycle 10 Remove nut fixing the compressor to the bottom plate Partition Compressor thermo Compressor Reactor 1 Perform work of item 1 of and 2 Remove lead wires clung in holder on the partition board 3 Remove screws fixing the reactor ST1T 4 x 10 2 pcs 65 Part name Pulse modulating valve coil Procedure 1 Detachment 1 Perform work of item 1 of and 2 Turn the coil clockwise counterclockwise by 90 degrees and remove coil from the pulse modu lating valve 2 Attachment 1 Set take out part of the lead wire of coil to the coil inserting position of the pulse modulating valve and attach the coil 2 Turn the coil by 90 degrees set surely t
78. ns of anchor bolt 2 06 hole 600 gt 4 911 x ETE ue hole For 28 010 anchor bolt 59 b Intake DN gE y s 2 06 hole 250 or more Outside line of product gt gt O gt more Outside line Minimum distance Of product from wall Outlet 4 x 11 x 17 long hole For 208 010 anchor bolt Detailed B leg part 15 4 WIRING DIAGRAM 4 1 Indoor Unit RAS 10YKV E RAS 13YKV E NN 6157 X NNN FAN MOTOR aN j 800080 dS 5 4 3 271 ANININ E TIRES R109 CNO7 VARISTOR R116 1 1604 5001 DSA i MI 101 R01 Foi FUSE T ji R21 INDOOR il erant fg BLOCK i C15 C01 MAIN P C BOARD MCC 772 OUTDOOR INDOOR UNIT UNIT A 909090909 1X2X3X4X5X6X7 X89 CN25 INFRARED RAYS RECEIVE AND INDICATION PARTS Ns a a Table 4 1 1 Simple check points for diagnosing faults Check items Diagnosis result Check to see if the OPERATION indicator goes on and off when the main switch or breaker is turned on or the power cord is plugged in the wall outlet Check the primary and secondary voltage of transformer OPERATION indicator Check for power supply voltage between Q Refe
79. ntrol The vertical air flow louvers are automatically set to horizontal or cool memory position When temperature of indoor heat exchanger becomes 5 C or lower by the prevent freezing control and the compressor is turned off the vertical air flow louvers close once and then return to the position of previous time 7 Discharge temperature control Common control to cooling and heating The discharge temperature of refrigerant gas from the compressor is detected by the dis charge temperature sensor and controls operat ing compressor motor speed 1 Control 1 A zone Normal operation zone When TD detect value is 98 C or lower the operation is performed with operating motor speed instructed by the serial signal JS Control 2 B zone Slow up zone of motor speed When TD detect value is 98 C or higher operating motor speed is slowly up e Control 3 C zone Keep zone When TD detect value is 105 C or higher operating motor speed is not changed if raising operation speed Control 4 D zone Slow down zone of motor speed When TD detect value is 108 C or higher operating motor speed is slowly down lt Control 5 E zone Normal down of motor speed When TD detect value is 112 or higher operating motor speed is down 2 Control 6 F zone Operation stop zone If TD detect value exceeds 117 C during operation stop the operation immediately Then restart the oper
80. ntrol fan motor are mounted to the outdoor unit The entire air conditioner is mainly controlled by the indoor unit controller The indoor unit controller drives the indoor fan motor based upon command sent from the remote control ler and transfers the operation command to the outdoor unit controller The outdoor unit controller receives operation from the indoor unit side and controls the outdoor fan and the pulse modulating valve Besides detecting revolution position of the com pressor motor the outdoor unit controller controls speed of the compressor motor by controlling output voltage of the inverter and switching timing of the supply power current transfer timing so that motors drive according to the operation command And then the outdoor unit controller transfers reversely the operating status information of the outdoor unit to control the indoor unit controller As the compressor adopts four pole brushless DC motor the frequency of the supply power from inverter to compressor is two times cycles of the actual number of revolution 1 Role of indoor unit controller The indoor unit controller judges the operation commands from the remote controller and assumes the following functions Judgment of suction air temperature of the indoor heat exchanger by using the indoor temp sensor Temperature setting of the indoor heat ex changer by using heat exchanger sensor Prevent freezing contr
81. o 4 2 es Liquid side 14 to 18 Nem S 26 35 mm 1 4 to 1 8 kgf m 1 14 to 18 i Service 1 4 to 1 8 kgf m Fig 9 3 7 9 3 4 Wiring Connection 1 Remove the electric parts cover from the outdoor unit 2 Connect the connecting cable to the terminal as identified with their respective matched numbers on the terminal block of indoor and outdoor unit 3 When connecting the connecting cable to the outdoor unit terminal make a loop as shown installation diagram of indoor and outdoor unit to prevent water coming in the outdoor unit 4 Insulate the unused cords conductors with water coming in the outdoor unit Process them so that they do not touch any electrical or metal parts Stripping length of connecting cable Terminal block Connecting cable OA L vl 0 12 sl 0 0 1 1 1 40 40 gt i Connecting Power Farthing cable cord cord Connecting cable Fig 9 3 8 Model RAS 10YKV E RAS 13YKV E Power source 50 60 Hz 220 240 V Single phase Maximum running current 8 5A Plug socket amp fuse rating 10A Power cord H07RN F or 245IEC66 2 0mm or more CAUTION Wrong wiring connection may cause some electrical parts burn out Be sure to comply with local codes on running the wire from outdoor unit to indoor unit s
82. o both indoor and outdoor units Therefore diagnose troubles according to the trouble diagnosis proce dure 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 First Confirmation Primary Judgment Judgment by Flashing LED of Indoor Unit Self Diagnosis by Service Check Remote Controller Judgment of Trouble by Every Symptom How to Check Simply the Main Parts NOTE A large capacity electrolytic capacitor is used in the outdoor unit controller 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 electri cal shock may be caused Discharge the electrolytic capacitor completely by using soldering iron etc Discharging method gt 1 Remove the inverter cover plating by opening four mounting claws 2 As shown below connect the discharge resis tance approx 100Q40W or plug of the solder ing iron to voltage between terminals of the C14 CAUTION HIGH VOLTAGE 320V is indicated electrolytic capacitor BOOUuF 400V on PC board and then perform discharging Inverter cover P i MCC 808 Discharging period mam LP 10 seconds or more boa
83. ode Indoor fan mode 3 5 to 3 7 10YKV E 20 7 6 13YKV E NOTES 2 5 to 2 7 4210 44 2104 High High 50 to 52 0to 3 High High 1 Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent Thermistor themometer 2 Connecting piping condition 5 m 20 7 CONTROL BLOCK DIAGRAM 7 1 Indoor Unit RAS 10YKV E RAS 13YKV E Indoor Unit Control Panel M C U Functions Operation Display Heat Exchanger Sensor Temperature Sensor Louver Control Infrared Rays Signal Receiver 3 minute Delay at Restart for Compressor Display Infrared Initializing Circuit e Motor Revolution Control Sign Disp Rays Clock Frequency Processing Oscillator Circuit Temperature Processing PRE DEF PE Sign Display Timer Serial Signal Communication Siro Power Supply Circuit Louver ON OFF Signal Remote Controller i Y Serial Signal Transmitter Receiver ea From Outdoor Unit REMOTE CONTROLLER Rays Operation START STOP Operation Mode Selection AUTO COOL DRY HEAT W c OS ON TIMER Setting OFF Setting Wa ECONO EGHINBOOBURIEE MICRO COMPUTER BLOCK DIAGRAM t 220 230 240 V 50 60 Hz Discharge temp sensor Outdoor air tem
84. of the outdoor P C board 3 How to simply judge whether outdoor fan motor is good or bad Turn OFF the breaker Disconnect two connectors CN300 and CN301 of the outdoor fan motor from the inverter Does the fan rotate without trouble when rotating it with hands If the resistance value between Red lead _ White lead White lead _ Black lead Black lead _ Red lead of the connector CN300 Motor winding is 50 to 800 it is normal CN300 If the resistance value between Yellow lead Pink lead of the connector CN301 Motor position detection is 5k to 20kQ it is normal YES Fan motor is normal Outdoor board error Fan motor error NOTE However GND circuit error inside of the motor may be accepted in some cases when the above check is performed When the fan motor does not become normal even if P C board is replaced replace the outdoor fan motor 58 11 1 Indoor Unit Part name Front panel 11 HOW TO REPLACE THE MAIN PARTS Procedure 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 3 Close the screw caps as they were 4 Open the horizontal louver right below by your finger 5 Open the lower side of front panel
85. oints socket joints used Prior to use be sure to remove all con taminants a Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm In such a case socket joints can be used Sizes of flare pipe ends flare joint ends and flare nuts are as shown in Tables 2 2 3 to 2 2 6 below b Socket Joints Socket joints are such that they are brazed for connections and used mainly for thick pipings whose diameter is larger than 20 mm Thicknesses of socket joints are as shown in Table 2 2 2 Table 2 2 2 Minimum thicknesses of socket joints Nominal diameter 1 4 Reference outer diameter of copper pipe jointed mm mm Minimum joint thickness 3 8 1 2 5 8 2 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 other than lubricating oils used in the installed air conditioner is used and that refrigerant does not leak When using lubricating oils in the piping processing use such lubricating oils whose water content has been removed When stored be sure to seal the container with an airtight cap or any other cover 1 Flare Processing Procedures and Precautions a Cutting the Pipe By means of a pipe cutter slowly cut the pipe so that it is not deformed b Removing Burrs
86. ol Louver motor control Indoor fan motor operation control LED display control Transferring of operation command signal Serial signal to the outdoor unit Reception of information of operation status Serial signal including outside temp data to the outdoor unit and judgment display of error Role of outdoor unit controller 5 Receiving the operation command signal Serial signal from the indoor controller the outdoor unit performs its role Compressor operation control Operations followed to judgment of serial signal from indoor side Operation control of outdoor fan motor e P M V control Detection of inverter input current and current release operation Over current detection and prevention opera tion to transistor 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 operation information Serial signal from outdoor unit to indoor unit Detection of outdoor temperature and opera tion revolution control Defrost control in heating operation Temp measurement by outdoor heat exchanger and control for four way valve and outdoor fan Dg 3 Contents of operation command signal Serial signal from indoor unit controller to outdoor unit controller The following three types of signals are sent from the indoor unit
87. on the P C Start the operation with the following black of the motor terminals board condition Motor does not rotate 2 Poor contact of the motor 1 Operation Cooling The key operation is accepted connector 2 Airflow High fan The motor rotates but it vibrates too 3 P C board is defective 3 Continuous operation much 54 10 8 2 Board Layout VE F C A Bottom View crue For the Top View refer to page 61 1 Sensor characteristic table Resistance value kW 100 Ee _ TA TC TO TE TS 0 10 20 30 40 50 Temperature 55 Discharge temp sensor Room temp sensor Heat exchanger temp sensor Outdoor temp sensor Outdoor heat exchanger temp sensor Suction temp sensor 10 8 3 Indoor Unit Other Parts Part name Room temp TA sensor Heat exchanger TC sensor Checking procedure Disconnect the connector and measure the resistance value with tester Normal temp we we we Remote controller To item of How to judge whether remote controller is good or bad of the Judgment of trouble by symptom Louver motor MP35EA7 Measure the resistance value of each winding coil by using the tester Under normal iemp 25 C Poeion Resistance value 130 10 Q Indoor fan motor 10 8 4 Outdoor Unit Part name Compressor Model DA91A1F 44F
88. on where the gap between the rear plate surface and the left end surface of the cross flow fan is 6 to 7 mm C ross Rear plate Shaft bearing Perform the process 6 above Remove the shaft bearing from the shaft bearing base Caution for assembling If a part of the shaft bearing is protruded from the housing assemble it after pushing its portion into the correct position in the housing Fan motor Perform the process 9 above Perform the process 0 2 above Remove the left and right motor bands Remove the fan motor after pulling the cross flow fan out sliding it left and right _ 60 Mount the fan motor DC asshown in figure belowwhen id assembling Pu the end of lead wire at the portion between two ribs 11 2 Microcomputer Part name Common procedure P C board layout Procedure 1 Turn the power supply off to stop the operation of air conditioner 2 Remove the front panel Remove the two fixing screws O4 x 144 3 Remove the electrical part base Remarks Replace the thermal fuse terminal block microcomputer ass y and the P C board ass y eB 11 3 Outdoor Unit Part name Common procedure Procedure 1 Detachment 1 Stop operation of the air conditioner and remove the power plug of the indoor unit from plug socket 2 Remove the valve cover 6 1 4 x 100 1 pc After removing scre
89. ooling operation signal is transmitted to outdoor unit The indoor fan motor operates as shown in Fig 8 2 1 when FAN button is set to AUTO The motor operates with a constant air flow when the FAN button is set to LOW MED or HIGH The outdoor unit controls the outdoor fan relay R01 RO2 and ROS and the compressor motor speed according to the operation command signal sent from the indoor unit Room temp Set temp NOTE 1 Calculated from difference motor speed of M and L and controlled Fig 8 2 1 Setting of air flow Fan AUTO 1 Cooling capacity control The cooling capacity and room temperature are controlled by changing the compressor motor speed according to both the difference between the temperature detected by the room temperature sensor and the temperature set by TEMP button and also any change in room temperature When compressor has been activated or reactivated it operates with Max 41 rps for 2 minutes with Max 91 rps from 2 minute to 3 minutes and with Max 94 rps after 3 minutes passed When room temperature is lower than set temperature indoor fan motor is operated at fan speed L as shown in Fig 8 2 1 while the outdoor unit stops 2 Prevent freezing control If temperature of indoor heat exchanger de tected by the indoor heat exchanger sensor is 5 C or lower compressor motor speed is gradually lowered to prevent freezing of the indoor heat ex
90. operation main unit goes on aiid OF to power When Auto Restart operation is set OFF TIMER failure In that case try to reserve ON TIMER reservation is also cancelled with power failure operation once again 34 8 5 Remote Controller 8 5 1 Parts Name of Remote Controller Transmitter Cools DRY 3 HEAT 4 TI 14 LOW gt MED START STOP button Push this button to start stop the air conditioner HON OF TIMER TEMP Temperature buttons Y 4 Push this button to set a desired temperature CK Fan speed button E STOP Push na button to change air flow 7j SET a SET button DIED C Push this button to change wind direction Push eration P5 aru 1 Economy button mode d L Push this bon economically e MER timer button eG CHK Check button Push this Was to start the unit at the SOS man shee this button to check time set by the timer OFF Off timer button AUTO Auto louver button Push this button to swing the vertical air flow louvers automatically CNL Cancel button Push this button to cancel reservation of the location of a problem Push this button to stop the unit at the timer operation time set by the timer RSV Reserve button Push this bu
91. p sensor Suction temp sensor Heat exchanger temp sensor MCC808 P C B OUTDOOR UNIT 1 inodor unit Rotor position send receive detect circuit circuit M C U PWM synthesis function Input current release control IGBT over current detect control Outdoor fan control High power factor correction control Inverter output frequency control converter function P M V control Discharge temp control 4 way valve control Signal communication to indoor unit Over current sensor High Power Clock factor Correction frequency circuit 16MHz Noise Input current Converter Over current sensor AC gt DC Filter Sensor Rotor position detect circuit Gate drive circuit Gate drive circuit Over current detect circuit Outdoor Fan motor Inverter DC AC Inverter 3 AVA L SVH 3 AVAOL SVH Ajquiassy Z Z Driver circuit Relay Over current of P M V sensor DC AC Compressor 8 OPERATION DESCRIPTION 8 1 Outline of Air Conditioner Control This air conditioner is a capacity variable type air conditioner which uses DC motor for the indoor fan motor and the outdoor fan motor And the capacity proportional control compressor which can change the motor speed in the range from 13 to 120 rps is mounted The DC motor drive circuit is mounted to the indoor unit The compressor and the inverter to co
92. peed The inverter changes compressor motor speed by changing AC 220 230 240V power to DC once and controls capacity by changing supply power status to the compressor with transistor module includes 6 transistors The outline of the control is as follows The revolution position and revolution speed of the motor are detected by detecting winding electromo tive force of the compressor motor under operation and the revolution speed is changed so that the motor drives based upon revolution speed of the operation command by changing timing current transfer timing to exchange inverter output voltage and supply power winding Detection of the revolution position for controlling is performed 12 times per 1 revolution of compressor The range of supply power frequency to the com pressor differs according to the operation status COOL HEAT DRY Table 8 1 1 Compressor revolution range Operation Compressor mode Model mama revolution rps 10YKV E 13 to 74 COOL 13YKV E 13 to 94 10YKV E 16 to 110 HEAT 13YKV E 16 to 114 8 1 2 Current Release Control The outdoor main circuit control section Inverter assembly detects the input current to the outdoor unit If the current value with compressor motor speed instructed from indoor side exceeds the specified value the outdoor main circuit control section controls compressor motor speed by reduc ing motor speed so that value becomes closest to the command within the limited
93. r to the name plate Check the primary and secondary voltage of transformer Check for fluctuate voltage between 2 DC 15 to 60V Terminal block Check to determine if the fuse is open Check Varistor R109 R21 Check for voltage at the pink lead of the infrared rays receive parts Check the transformer and the rated voltage power supply circuit Check for voltage at the D lead of louver motor Check the transformer and the rated voltage power supply circuit Check for voltage at the CN10 connector side point Check the transformer and the rated voltage power supply circuit For detailed diagnostic procedure refer to the service data DSA Surge Absorber 16 EXCHANGER SENSOR TC COLOR IDENTIFICATION ORANGE GREEN amp YELLOW 4 2 Outdoor Unit RAS 10YAV E RAS 13YAV E ORN Eu 25 z 5 0801 REACTOR COIL FOR 4WAY VALVE FAN MOTOR TH P M V Pulse Modulating Valve ERMOSTAT POWER PPLY FOR SU COMPRESSOR 220 240V 50 60Hz UN ES mm E 1 TERI eee Exp t3 REE 9 Po7 CN703 CN500 P01 P02 P P C BOARD N F01 808 SURGE FUSE RELAY ABSORBER
94. r to the wiring system diagram labeled inside the front panel Check local electrical cords and also any specific wiring instructions or limitation Terminal block Terminal Gord Connecting aw cable Screw E soor ER bo 2 Jul Fig 9 2 8 Earth line IT d uS Connecting Screw cable Stripping length of connecting cable L 123 Ll 10mm rt addi 11 T 50mm 40mm i E NOTE NOTE Connect the earth line to the metallic part mark located at the side of 3P terminal Fig 9 2 9 Use stranded wire only WIRE TYPE more than H05 RN F Place your finger on the lower part and push to open the screw cap 1 Open the screw caps remove the two screws securing the front cabinet 2 Close the screw caps as behind 3 Open the vertical air flow louver horizontally by hand 4 Slightly open the lower part of the front cabinet then pull the upper part of the front cabinet toward you to remove it from the rear plate How to install the front cabinet on the indoor unit Install the front cabinet through the opposite order of How to remove the front cabinet When the panel is removed and mounted again take the following actions After fastening the two screws one each at the left and right of the air outlet be sure to push the upper cent
95. rates In Dry and ECONO mode air flow The air flow indication is fixed to AUTO display does not change even though FAN air flow select button is operated Increasing of compressor motor speed For smooth operation of the compressor the compressor stops approx 30 seconds after operation motor speed is restricted to Max 41 rps for 2 minutes and started and then compressor motor speed Max 91 rps for 2 minutes to 3 minutes respectively after increases again approx 30 seconds after the operation has started The set value of the remote controller If the set value is above the room temperature Cooling should be below the room temperature operation is not performed And check whether battery of the remote controller is consumed or not In AUTO mode the operation mode is After selecting Cool or Heat mode select an operation changed mode again if the compressor keeps stop status for 15 minutes In HEAT mode the compressor motor The compressor motor speed may decrease by high temp speed does not increase up to the maxi release control Release protective operation by temp up mum speed or decreases before the of the indoor heat exchanger or current release control temperature arrives at the set tempera ture 10 2 Primary Judgment To diagnose the troubles use the following methods 1 Judgment by flashing LED of indoor unit 2 Self diagnosis by service check remote controller 3
96. rd Discharging position 2 Plug of Soldered surface soldering iron 10 1 First Confirmation 10 1 1 Confirmation of Power Supply Confirm that the power breaker operates ON normally 10 1 2 Confirmation of Power Voltage Confirm that power voltage is 220 230 240 10 If power voltage is not in this range the unit may not operate normally 40 10 1 3 Operation Which is not Trouble Program Operation For controlling the air conditioner the program operations are built in the microcomputer as described in the following table If a claim is made for running operation check whether or not it meets to the contents in the following table When it does we inform you that it is not trouble of equipment but it is indispensable for control ling and maintaining of air conditioner Table 10 1 1 Operation of air conditioner Description When power breaker is turned ON the The OPERATION lamp of the indoor unit flashes when operation lamp Green of the indoor unit power source is turned on If START STOP button is flashes operated once flashing stops Flashes also in power failure Compressor may not operate even if the The compressor does not operate while compressor room temperature is within range of restart delay timer 3 minutes timer operates compressor ON The same phenomenon is found after power source has been turned on because 3 minutes timer ope
97. re auto matically controlled according to the operation status AUTO COOL DRY HEAT Besides positions of vertical air flow louvers can be arbitrarily set by pressing the SET button The louver position which has been set by the SET button is stored in microcomputer and the louver is automatically set at the stored position in the next operation 2 Swing If the AUTO button is pressed during running operation vertical air flow louvers start swinging When the AUTO button is pressed again swinging stops 8 1 7 Indoor Fan Control DC Fan Motor The indoor fan is operated by motor speed non step variable DC drive system motor For flow rate motor speed is controlled manually in three steps LOW MED HIGH and with the unit of 10 rpm from upper limit to lower limit in AUTO mode as described in Table 8 1 2 It is not selected by relay so selecting sound does not generate Table 8 1 2 RAS 10YKV E RAS 13YKV E Operation mode Fan mode Motor speed rpm Air flow rate Motor speed Air flow rate m h rpm m h _ 25 8 1 8 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
98. rge run Charge hose check etc Vacuum pump adapter Vacuum evacuating Electronic balance for refrigerant charging Refrigerant charge Refrigerant cylinder Refrigerant charge Leakage detector Gas leakage check Charging cylinder Refrigerant charge Note 1 When flaring is carried out for R410A using the conventional flare tools adjustment of projection margin is necessary For this adjustment a copper pipe gauge etc are necessary Note 2 Charging cylinder for R410A is being currently developed General tools Conventional tools can be used In addition to the above exclusive tools the following equipments which serve also for R22 are necessary as the general tools 1 Vacuum pump 4 Reamer 9 Hole core drill 265 Use vacuum pump by 5 Pipe bender 10 Hexagon wrench attaching vacuum pump adapter 6 Level vial Opposite side 5mm 2 Torque wrench For 26 35 7 Screwdriver 11 Tape measure 3 Pipe cutter 8 Spanner or Monkey wrench 12 Metal saw Also prepare the following equipments for other installation method and run check 1 Clamp meter 3 Insulation resistance tester 2 Thermometer 4 Electroscope 10 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 c
99. t is firmly hooked up on the installation plate While pressing the indoor unit onto the wall hook it at the lower part on the installation plate Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate Hook here CD Installation cu plate gt Press unhook m Fig 9 2 16 7 detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing its bottom up at the specified parts Push Push Fig 9 2 17 9 2 7 Drainage 1 Run the drain hose sloping downwards NOTE Hole should be made at a slight downward slant on the outdoor side Do not rise the drain hose Do not form the drain hose into the waved shape 4 X it 50 mm or more x Do not put the drain hose end into water Fig 9 2 18 2 Put water in the drain pan and make sure that the water is drained out of doors 3 When connecting extension drain hose insulate the connecting part of extension drain hose with shield pipe Do not put the drain hose end in the drainage ditch Shield pi ie pipe a Drain hose Inside the room Extension drain hose Fig 9 2 19 Arrange the drain pipe for proper drainage from the unit Improper drainage can result in dew dropping Th
100. ter box and wiring holder at right side of the terminal block 6 Remove the lead wire from the bundled part at left side of the terminal block 7 Pull the inverter box upward 8 Disconnect connectors of various lead wires Requirement As each connector has a lock mecha nism avoid to remove the connector by holding the lead wire but by holding the connector 63 Remarks Inverter cover P C board Soldered surface Plug of Discharging position soldering Discharging period Terminal block The connector is one with lock so remove it while pushing the part indicated by an arrow Be sure to remove the connector by holding the connector not by pulling the lead wire Part name Control board assembly Procedure 1 Disconnect lead wires and connectors connected from the control board assembly to other parts 1 Lead wires Connection with terminal block 3 wires Black White Orange Connection with compressor Remove the connector Connection with reactor Remove the relay connectors from P07 08 2 White and P12 13 2 Yellow 2 Connectors CN300 Outdoor fan 3P White CN301 Outdoor fan position detection White 4 valve Yellow TE sensor 2 White TD sensor 3P White TS sensor White CN602 TO sensor 2 White CN500 Case thermo 2P White CN703 Pulse modulating valve 6P White CN701
101. the outdoor fan motor If a fan lock occurred due to entering of foreign matter the air conditioner stops and an alarm is displayed COOL DRY Table 8 1 3 Model name RAS 10YAV E RAS 13YAV E To 13 2 To 34 1 From 34 7 To 13 2 To 34 1 From 34 7 oo temp sensor TO lt 38 C 45 630 800 390 630 800 450 630 390 630 800 TO lt 15 C TO gt 38 C 4 0 50 ECONO operation 70 3605 40 40 630 30 lt 15 is abnormal 6 lt HEAT gt 450 940 940 390 390 Table 8 1 4 Model name RAS 10YAV E RAS 13YAV E Compressor revolution rps To 16 2 To 44 3 From 44 9 To 16 2 From 44 9 Outdoor temp sensor 580 800 390 900 TO 580 800 650 940 390 580 390 650 580 580 390 650 TO is abnormal 580 800 390 900 operation 8 2 Description of Operation Circuit Turning ON the breaker flashes the operation lamp This is the display of power ON or notification of power failure When pushing START STOP button of the remote control receive sound is issued from the main unit and the next operations are performed together with opening the vertical air flow louvers _ 26 8 2 1 Cooling Operation The Remote Controller MODE Button is Set to the COOL Position 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 START STOP button A c
102. tic liquid does not blow off Check that the normal charging characteristics are shown in continuity test by the tester Case that product is good Pointer swings once and returns slowly When performing test once again Soldered under another polarity the surface o pointer should return S m x 35 c o C12 C13 C14 500uF 400V Converter module 1 Turn OFF the power supply breaker 2 Discharge all four capacitors completely 3 Check that the normal rectification characteristics are shown in continuity test by the tester Diode check Resistance value Resistance value ram CO in good product in good product 50kQ or more 50kQ or more 0Q in trouble 0Q in trouble ub 10 9 How to Simply Judge Whether Outdoor Fan Motor is Good Bad 1 Symptom Outdoor fan motor does not rotate Outdoor fan motor stops within several tens seconds though it started rotating Outdoor fan motor rotates or does not rotate according to the position where the fan stopped etc Remote controller check code 02 Outdoor block 1A Outdoor fan drive system error 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 error of the outdoor fan motor 3 Position detect circuit error inside of the outdoor fan motor or 4 Motor drive circuit error
103. ting cable in loop and put it into the drain pan Drain pan assembly 1 Perform the process 2 above 2 Remove the drain pan by pressing the four hooks downwards Keep it with the drain hose 59 Part name Horizontal grille Note The horizontal grille can not be removed without removing the louver motor Procedure 1 Perform the process 2 Remove the screw fixing the louver motor and remove the louver motor 3 Remove the shaft of the horizontal grille from the drain pan Remarks Louver S c Horizontal grille Screw Heat exchanger 1 Perform the process 2 Remove the pipe holder from the rear side of main unit by removing the screw 3 Unhook the hooks fixing the left side of the heat exchanger and remove the screw fixing it then remove the right side of the end plate from the rib fixing the main unit by sliding the heat exchanger slightly to the right side zHooks moa Pipe holder Hooks fixing the _ 2 heat exchanger i Shaft bearing 7 base Screw fixing Wal heat exchanger Cross flow fan 1 2 3 4 Perform the process Loosen the set screw of the cross flow fan Remove the screw fixing the shaft bearing base Lift slightly up the left side of the heat exchanger and pull the shaft bearing base out left downwards When assembling it fix it with the set screw on the positi
104. tools for R410A Applicable to R22 model Changes Gauge manifold As pressure is high it is impossible to measure by means of conventional gauge In order to prevent any other refrigerant from being charged each port diameter has been changed Charge hose 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 Electronic balance for refrigerant charging As pressure is high and gasification speed is fast it is difficult to read the indicated value by means of charging cylinder as air bubbles occur Torque wrench nominal diam 1 2 5 8 The size of opposite sides of flare nuts have been increased Incidentally a common wrench is used for nominal diameters 1 4 and 3 8 Flare tool clutch type By increasing the clamp bar s receiving hole strength of spring in the tool has been improved Gauge for projection adjustment Used when flare is made by using conventional flare tool Vacuum pump adapter Connected to conventional vacuum pump It is necessary to use an adapter to prevent vacuum pump oil from flowing back to the charge hose The charge hose connecting part has two ports one for conventional refrigerant 7 16 UNF 20 threads per inch and one for R410A If the vacuum pump oil mineral mixes with R410A a sludge may occur and damage the equipment
105. ts utilize the anchor bolt holes as illustrated in the above figure 3 Install the installation plate horizontally in the wall CAUTION When installing the installation plate with mounting screw do not use the anchor bolt hole Otherwise the unit may fall down and result in personal injury and property damage Anchor bolt N Y Projection 15 less x O x Fig 9 2 4 a 5 mm dia hole Mounting screw 9 04 25 gt Clip anchor local parts CAUTION Failure to firmly install the unit may result Fig 9 2 5 in personal injury and property damage if the unit falls n case of block brick concrete or similar type walls make 5 mm dia holes in the wall Insert clip anchors for appropriate mounting screws NOTE Install the installation plate using 4 to 6 pieces of mounting screw securing four corners with screws 9 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 the air conditioner NOTE e Wire type More than H07RN F or 2451EC66 2 0mm or more Use power specified above table This appliance can be connected to the mains in either of the following two ways 1 Connection to fixed wiring A switch or circuit breaker which disconnects all poles
106. tton to reserve timer operation 8 5 2 Name of Indications on Remote Controller All indication that appear on the remote controller are shown for explanation Transmission indicator This mark is indicated when a button is pushed Selected operation mode with the MODE button is indicated Set temperature is indicated 17 C to 30 C o Selected degree of air flow HIGH MED LOW or AUTO is indicated This mark is indicated when Set time for timer the ECONO button is pushed operation is indicated EL v 9 INSTALLATION PROCEDURE 9 1 Safety Cautions This air conditioner adopts the new refrigerant R410A which does not destroy ozone layer R410A refrigerant is apt to be affected by impurity such as water oxidizing membrane and oils because pressure of R410A refrigerant is approx 1 6 times of refrigerant R22 Accompanied with adoption of the new refrigerant refrigerating machine oil has been also changed Therefore during installation work be sure that water dust former refrigerant or refrigerating machine oil does not enter into the refrigerating cycle of new refrigerant air conditioner To prevent mixing of refrigerant or refrigerating machine oil the sizes of connecting sections of charging port of the main unit or installation tools are different from those for the conventional refrigerant Accordingly the exclusive tools are required for the new refrigerant R410A as show
107. udgment 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 the power supply once and turn on it again after 5 seconds passed Does the operation lamp flash YES Is the power supply turned on by pressing START STOP button on remote controller YES No trouble Parts R21 R109 SG01 C15 C01 DB01 C02 NO Is fuse of indoor control Y board blown 01 Does send display of remote controller flash normally and is the signal sent securely Operation Check Item Considerable main cause Measures Item by symptom Remote controller error Refer to the item of Remote controller check p 49 YES IC01 TO1 are defective Replace temp fuse set NO YES i Is temp fuse blown CORRER ar connecting NO Is voltage indicated NO on rear of indoor control board DC12V or 5V normal YES Is DC310 to 340V applied to primary side of SW trans T01 applied To item of Pre check or trouble before power board Is DC35V DC12V DC7V applied to secondary side of SW trans side of SW trans T01 applied T01 applied YES YES Is DC35V DC12V DC7V applied to secondary NO Turn OFF breaker once and ON again after removing motor Check connect
108. w remove the valve cover pulling it downward 3 Remove wiring cover ST1T 4 x 104 2 pcs and then remove connecting cable 4 Remove the upper cabinet 5 1 04 x 10 2 pcs After removing screws remove the upper cabinet pulling it upward 2 Attachment 1 Attach the upper cabinet 5 1 04 x 10 2 pcs Hook the rear side of the upper cabinet to claw of the rear cabinet and then put it on the front cabinet 2 Perform cabling of connecting cable and attach the wiring cover Insert the upper part into the upper cabinet insert claw which has been hooked to the lower part into the square hole and then fix it with screw ST1T 4 x 106 1 pc 3 Attach the valve cover ST1T 4 x 106 1 pc Insert the upper part to the upper cabinet set hook claw of the valve cover to square holes at three positions of the main unit and attach it pushing upward Front cabinet 1 Detachment 1 Perform work of item 1 of D 2 Remove screws ST1T 4 x 100 1 pc of the front cabinet and inverter cover and screws ST1T 4 x 100 3 pcs of the front cabinet and lower part The left side of the front is made to insert to the rear cabinet so remove it pulling upward 2 Attachment 1 Insert claw at the left side of the front into the rear cabinet 2 Hook the lower part at the right side of the front to concave part of the bottom plate Insert claw of the rear cabinet into square hole of the front cabinet 3
109. yed when error is detected 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 compressor and perform short circuit Replace compressor Current detect circuit error Being out of place disconnection or short circuit of outdoor temp sensor Disconnection or short circuit of discharge temp sensor 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 Check outdoor temp sensors TE TS 2 Check P C board 1 Check discharge temp sensor TD 2 Check P C board Outdoor fan drive system error Displayed when error is detected Position detect error over current protective operation of outdoor fan drive system fan lock etc Replace P C board or fan motor Not displayed Outdoor P C board Others including compressor Outdoor heat exchanger temp sensor error Operation continues Compressor drive output error Compressor error lock missing etc Break down Return serial signal has been sent when operation started but it is not sent from halfway 1 Compressor thermo operation Gas shortage Gas leak 2 Instantaneous power failure Operation continues Displayed when error is detected Flashes

Toshiba RAS-10YAV-E Air Conditioner User Manual

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