Service Manual All Cookers
Contents
1. Dangerous tension The induction cooker may only be opened by authorized personnel Stop any work if the heating area vitrocerame is broken The induction cooker must be switched off and the mains cable must be disconnected Do not touch any parts inside the cooker Before replacing a part check the wiring Make especially attention to the following faults e Broken cables e Squeezed cables e Defective isolations of cables e Bad soldering joints You must not effect any repair on the printed boards It is important to do respective maintenance works after every repair see Maintenance and Service Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 12 of 28 7 2 Error messages LED8 LED7 LED6 LED5 Code Signification High coil current Software overcurrent EP G Temperature heating area s ss i po s Heating area coil sensor ee ee Power reduction heat sink temperature PP re 1 The induction unit can only be startet again if the fault has been given receipt for turn power rotary knob off 2 The induction unit continues working but the temperature of the cooking platform is not controlled anymore 3 The induction unit continues working with reduced power cycles Code informs about the number of flashes of the indicator lamp Order of error message The indicator lamp flashes for an interval of 0 6 sec The number of the following short flashes has to2. Remove the fan with 4 screws on the bottom of the unit Remove the fan Put in the new fan with 2mm distance bolts Fix the fan with 4 screws Temperature sensor heat sink The sensor is installed in the cable lug that is fixed at the transistor module Replace simply that whole part cable lug with sensor cable and connector e Remove first the power print C016 C031 see 8 2 Remove the hexagon socket screws at the transistor module Remove that whole part cable lug with sensor cable and connector Fix the cable lug with the hexagon socket screws on the transistor module Fix the power print C016 C031 see 8 2 Temperature sensor coil e Place ST7 on logic print e Remove coil from coil carrier plate e Replace sensor Attention the sensor must be placed on the vitrocerame when the unit is connected e Fix coil on the coil carrier plate Distance lower border of coil to carrier plate must be 23mm e Place ST7 on logic Repair of spare parts Repair of spare parts and of whole units may only be effected by INDUCS Ltd Therefore you have only to check and replace parts that are described in this service manual If you should repair parts please describe exactly the faults if possible with information about the history of the unit for example new installation changements which have been done next to the induction cooker or to other units which are supplied by the same network In order to save transport charges do not return defe
3. Sign low ST 1 3 and highO ST 1 5 If wrong replace logic print C018 otherwise check components on the power print see Test components Verify signs enable ST 1 2 and low ST 1 3 If wrong replace logic print C018 Replace logic print Check signs low ST 1 3 and high0 ST 1 5 If wrong replace logic print C018 otherwise replace power unit s AP3 Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 20 of 28 Switch off mains cable Take out ST4 from logicprint C018 Check resistor ST 4 1 ST 4 2 by means of ohmmeter Position control knob If wrong adjust potentiometer or replace resistor incl potentiometer AT1 Switch off mains cable Take out ST7 from logicprint C018 Check resistor ST 7 1 ST 7 2 by means of ohmmeter FLAT WOK Temperature Vitrocerame R Ohm Temperature Induction coil R Ohm 25 C 80 F 980 1000 25 C 80 F 50 100 100 C 210 F 1240 1280 180 C 355 F 3500 4500 150 C 300 F 1410 1450 200 C 390 F 1570 1610 When out of the range replace coil including temperature sensor Connect sign Fan control ST 1 10 with GND ST 1 4 Fan must work If not fan is defective Replace it Otherwise logic print must be defective Replace 2 see sign connector ST 1 8 Exchange of spare parts CAUTION All spare parts and accessories may only be changed by authorized
4. be counted and informs about the kind of error corresponding to the above mentioned code system Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 13 of 28 7 3 Flux plot to fault finding Measure the electrical potential of the socket Connect unit a Is there any el Potential S a No N Replace fuse in the unit und control whether the socket is enough protected Y Disconnect unit from network unction o K gt The unit works fautless see ch 5 page 8 No Disconnect unit from network Y Open cover see 8 1 Y Put 4mm distance on coil Y Open cover see 8 1 Y Power knob on ON any position between 1 12 y Measure after switch diode distance between phases Y Put pan on coil Y Connect unit Y Measure electric potential after switch Z _ U before Ye 2 power switch Remove fault available k X Na No Y Replace Control distance between switch plug and switch Service Manual new version Yes No Short circuit Continue on page 16 Remove power print see ch 8 2 y Check power print whether there are destructed components Remove power print see ch
5. for the interference suppression is integrated Certifications Satisfies the latest specifications VDE EN 60335 1 2 36 UL 197 CAN CSA C 22 2 No 109 SSF 4 1996 CE compliant Constructions The cookers are made of stainless steel CNS 1 4301 The case is sealed The mounting of the vitrocerame as well as of the ceramic bowl is done with screws Functioning Adjusting the performance rate The performance rate is adjusted by the potentiometer control knob The inductive performance is depending on the position of the potentiometer Position 1 minimum power Position 10 maximum power Checking the temperature Induction coil The temperature of the induction coil is checked by a temperature sensor If the coil is heated over the maximum power the heating process is stopped As soon as the coil has cooled down the Induction unit may be re started Turn the position of the kontrol knob on 0 and then on the desired power Power board The temperature of the power board is checked by a temperature sensor As soon as the heat sink is heated over 55 C 130 F a cooling fan is started Temperatures of the heat sinks of more than 70 C 160 F will reduce automatically the checking of the power in order to keep the induction cooker working under normal conditions Print The temperature of the print is checking the ambient temperature of the appliance As soon as the temperature is higher than the programmed value the heating pro
6. in the down Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 19 of 28 Fault Possible cause Action to take through Nr authorized personnel Small metallic objects Pan detection is wrong adjusted Check logic print and contact AL4 for ex spoons are your supplier heated on the heating area 1 In order to verify whether the pan is appropriate use a magnet which should stick at the bottom of the pan If it does not your pan is inappropriate to induction cookers Choose pan material that is recommended for induction appliances 2 The cooling system is starting to work when the temperature of the heat sink is higher than 55 C 160 F it reduces the checking of the power in order to hold the power board in normal working conditions 7 5 Fault repair Detailled instruction of the steps in order to repair faults see list Faultfinding Nr Action Switch off the mains cable of the cooker Check with ohmmeter whether a short circuit has occured Make this test in ON and OFF position Locate short circuit If it happened to the power print replace it Check load 24 VDC ST 1 1 24 VDC ST 1 4 ND on power prints C016 C031 and on logic prints C018 If wrong replace logic print The following measurements must be done with oscilloscope Sign enable ST 1 2 and low ST 1 3 If wrong replace logic print C018 Check components see Test components
7. is working A short circuit between and means that the transistor module is defective Transistor module picture 2 Conducting state voltage Diode U 0 4 V if all conducting state voltages show approx 0 4 V the transistor module is working A short circuit between C2 E2 C1 E1 and C1 2 means that the transistor module is defective If the rectifer and or the transistor module seem to be defective separate the power board C016 C031 from heat sink and verify the rectifier and the transistor module without connection Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 10 of 28 5 6 2 Rectifier The recitifier is separated from the power board but still fixed on the heat sink Dismount according to Replacement of power board e Conducting state voltage Diode U approx 0 5 V if all conducting state voltages show approx 0 5 V the rectifier works e Short circuit at the different diodes rectifier is defective Picture 1 3 1 5 6 3 Transistor module The transistor module is separated from the power board but still fixed on the heat sink Dismount according to Replacement of power board Conducting state voltage Diode U approx 0 4 V if all conducting state voltages show approx 0 4V the transistor module is working A short circuit between AC2 E2 C1 E1 and C1 E2 means that the transistor module is defective If the modul
8. personnel CAUTION In order to guarantee safety use only genuine spare parts and accessories from INDUCS Ltd If other components are used no liability is accepted CAUTION The mains cable must be disconnected Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 21 of 28 8 1 To open the induction unit 1 Phase 3 Phases Turn the induction unit Remove screws Turn induction unit back in normal position Lift cover turn away at the right side put it at the side panel Remove coil carrier remove 2 stop nuts at the left Remove M4 screws Remove screws A1 and A2 Turn away coil carrier at the left D Schrauben M Vorderseite Sicht von unten 8 2 Power print C016 C031 1 Phase 3 Phases Dismount of the power print Draw out all connectors on the power print ST1 Draw out all clamped joints on the power print 1 Phase L1 N PE 1 2 3 4 7 8 3 Phases L1 L2 L3 PE 1 2 3 4 5 6 7 8 Draw out ST5 on logic print C018 Remove all soldered joints by means of solder plating Remove pin M4 and screw M4 in the corner of the print Remove the connection to the transistor module 3 screws M5x12 Remove the rectifier 5 screws M4x16 3 Phases or 4 screws M4x16 1 Phase Make attention to the distance bolts and the plain washers bolt head spring washer spring washer plain washer distance bolt range the two spring washers together Remove power print Assembly of the power
9. print Put the power print on the bolts Make attention to the connectors J16 J17 J18 J19 The four wires of the transistor module must be conducted through the wholes of the print plate Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 22 of 28 8 3 8 4 8 5 Put the screws to fix the rectifier 5 crews M4x16 3 Phases or 4 screws M4x16 1 Phase Make attention to the distance bolts und the plain washers bolt head spring washer spring washer plain washer distance bolts range the two spring washers together Put the screws to fix the transistor module Do not yet tighten the screws Fix the screws of the rectifier Fix the screws on the transistor module Don t tighten too much Fix the bolt M4 and the screws M4 in the corners of the print plate Solder the connectors J16 J17 J18 J19 with solder plating Connect the clamping joints on the power print 1 Phase L1 N PE 1 2 4 5 7 8 3 Phases L1 L2 L3 PE 1 2 3 4 5 6 7 8 Connect all plug type connectors on the power print ST1 Connect ST5 on the power print C018 Connect the coil with A1 and A2 screws Logic print C018 Dismount of logic print Disconnect all plug type connectors ST1 ST4 ST5 ST6 ST7 ST8 Remove nut M3 and the 3 plastic bolts Remove the logic print Assembly of the logic print Put the new logic print Exchange print into the case Fix the print with nut M3 and the 3 plastic bolts Connect all plug type c
10. 8 2 Component destructed y Send defective print to INDUCS Ltd y author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 Measure rectifier y Continue on page 15 page 14 of 28 Continue from page nr 14 XS Short circuit Rectifier i Yes Measure transistor m module IGBT Short Circuit Exchange rectifier see page nr 23 ch 8 5 IGBT vy No Fix power print on cooling box see ch 8 2 Unit works see ch 5 Send unit to INDUCS Ltd Service Manual new version Y Put unit together Y Connect unit and check No Mains fuse i o Y Exchange IGBT Exchange diodes on power print see ch 8 4 potential after switch Replace power switch lt Measure electric Continue on page 16 Repair fault A U Ly before switch available Check distance between connector and socket author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 15 of 28 Y Measure 24V DC at Continue fom page nr 14 15 Disconnect St7 on logic and connect a 1k resistor Y Connect unit ar St 10 i 24V k YeS ailable 2 Oy Exch
11. GE C O O WO NN O O O OD ol 12 12 12 13 14 15 16 17 18 20 page 2 of 28 1 1 1 1 2 1 3 Safety Description of danger signs The safety information which may cause danger for people personal injury at non observance is specially marked with the general danger symbol The electrical connection must be made by an expert CAUTION Is used if there is a hazard or unsafe practice which could result in minor personal injury or property damage Qualification and training of personnel The staff for assembly installation commissioning operation and maintenance must have the appropriate qualifications The field of responsibility competence and supervision of the staff must be defined and controlled Safety prescriptions for installation and service The operating personnel has to make sure that the installation and service as well as all inspection is done by authorized and qualified personnel This personnel must have read very carefully the Instructions for use in order to meet the requirements For installation service maintenance repair and overhaul of the induction cookers the personnel has to be specially qualified and must have attended a special training authorized by the manufacturer In principle such work on induction appliances must only be carried out when it has no electrical tension The cookers must be switched off and disconnected from the electric connection The insta
12. SERVICE MANUAL SINGLE INDUCTION COOKERS Type SH BA 3500 Type SH BA 5000 Type SH IN 3500 Type SH IN 5000 Type SH WO 3500 Type SH WO 5000 Type SH WO IN 3500 Type SH WO IN 5000 Service Manual Single version 03 01 18 09 03 page 1 of 28 CONTENT 1 Safety 1 1 Description of danger signs 1 2 Qualification and training of personnel 13 Safety prescriptions for installation and service 1 4 Unauthorized reconstruction and use of spare parts 1 5 Improper operating methods 2 Technical Information 3 Functioning 3 1 Adjusting the performance rate 3 2 Checking the temperature 3 3 Protection overload current 4 Surroundings of installation 4 1 Pan material for induction cookers 5 Tests 5 1 Pan detection 5 2 Power rating 5 3 Maximum rating 54 Current 5 5 Fan 5 6 Test components 5 6 1 Power board 5 6 2 Rectifier 5 6 3 Transistor module 6 Maintenance Service 7 Fault finding 7 1 Generally 7 2 Error messages 7 3 Flux plot 7 4 Fault finding Troubleshooting guide 7 5 Fault repair 8 Exchange of spare parts 8 1 To open the cooker 8 2 Power print C016 C031 8 3 Logic print C018 84 Transistor module 8 5 Rectifier 8 6 Fan 87 Temperature sensor heat sink 8 8 Temperature sensor coil 8 9 Repair of spare parts 9 Appendix 9 1 Logic print C018 9 2 Power print C031 93 Power print C016 94 Signal connector ST1 Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 PA
13. Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 17 of 28 7 4 Fault finding Troubleshooting guide Fault Fuse burns out at starting No heating indicator lamp does not flash No heating Service Manual new version Possible cause Action to take through Nr authorized personnel Cooker is wrong connected Check the connections m Short circuit at power print Check the power print Short circuit wiring Check the wiring Potentiometer on OFF position Turn the potentiometer on ON interrupter ON Main switch defective Check power on binder 5 and 6 one phase or 4 5 and 6 three phase on power board No current supply Check the fuses Check connection Power supply not satisfactory Check power supply Fuses Logic supply on power Check and replace print defective eventually fuses S1 and S2 Typ 1AT Pan too small Take appropriate pan Diameter of pan bottom less than 12 cm Pan is not placed in the middle Push the pan in the middle of the heating area pan can not of the heating area be detected Inappropriate pan Choose a pan appropriate for induction 1 Power print defective Check power print Logic print defective Check logic print Potentiometer defective Check potentiometer Temperature sensor Check temperature coil Coil defective sensor author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 18 of 28 Fault Possible cause Action t
14. ange power print Send defective print to INDUCS Ltd y spool see ch 8 8 Replace sensing element of x Unit Yes works No y Connect St7 lt Y Disconnect St6 on logic and connect a 20k resistor v Connect unit ty Unit Yes works Noy Connect St6 again lt Replace sensing element of cooling box see ch 8 7 Y Disconnect St4 on the logic and connect a 8k2 resistor Y Connect unit Hint Yes Check cable with con come aS power potentiometer nector of v Repair interruption or bad contacts ev replace power switch Connect St4 again y Continue with page 17 Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 16 of 28 Continued from page 16 v control ST1 Contacts Replace contacts i O i Yes Connect unit Yes Compose unit and control see ch 5 Y Exchange logic lt No Exchange power print see ch 8 2 I Connect unit Yes No Compose unit with genuine prints and send it back to INDUCS Ltd Compose unit andcontrol it see ch 5 u Compose unit and control it
15. cess is stopped It can be re started as soon as normal conditions are reached Protection overload current Detecting inapproriate pan material or magnetic objects on the heating area the current in the induction coil may be essentially raised In order to protect the power board the current in the coil is checked As soon as the current in the coil exceeds the tolerance the generator is blocked and there is no further aktive exchange of energy He will be re started as soon as normal working conditions are reached Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 6 of 28 4 1 Surroundings of installation The electrical connection must be made by an expert Please follow the following rules e Verify and make sure that the electric potential of the main conductor corresponds with the specification plate e The electrical connections must satisfy local house installation regulations The valid national and local regulations of the electricity supply inspection authorities must be observed e The induction cooker is equipped with a flexible cable which must be connected to a wall socket e When faulty current circuit breakers are used they must be rated for a breaking current of 30mA or more The cooker has to be set up on a even place like a table and requires an area of at least 400 x 480 mm The air inlet and air outlet may not be obstructed the place must be able to withstand a loadin
16. ctive parts as temperature sensors rectifier transistor modules interrupters Such parts can be disposed correctly on place Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 24 of 28 9 Appendix 9 1 C018 Logic print St7 Coil Temperature Sensor St6 Temperatur Heatsink St5 Overcurrent D on CEZ i etectio Czar 14 ICCZLIICTa CCC 113 E St1 Connection to power print St4 Potentiometer St8 External indicator an2 rA ona O I N3 J sno O T ST1O q Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 25 of 28 9 2 C031 Power print 230V 3 5 kW Connection fan Connection by power switch St1 Connection to logic print A Mains receiver Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 26 of 28 93 C016 Power print 400 V 5kW Connection Connection by Fan power switch Connection to logic print St2 to logic print St5 receiver Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 27 of 28 9 4 Signal connector ST1 ST1 on power board C016 and ST1 ond Logic print C018 are directly connected connector 1 at connector 1 connector 2 at connector 2 Therefore the signs are identical Connec Sign Short description tion 24 VDC Supply 24V for Logic print 2 enable Verify transistor module een ee 2us SS i 20ms 3 Verify transistor
17. e is defective verify diodes D7 D8 D9 and D10 on short circuit see 9 2 9 3 Replace the power board when you discover a short circuit Picture 2 C1 c C2 E1 ZN E2 Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 11 of 28 6 Maintenance Service Maintenance work may only be effected by authorized personnel Before starting the maintenance works the energy supply must be stopped and the appliance must have cooled down The following maintenance works must be effected periodically The longer and the more frequently the cooker is used the more often the maintenance works have to be effected Every cooker must be checked at least once a year Fan The good function of the cooker can only be guaranteed if the electronic is kept by normal working temperatures e The air inlet and air outlet slots must not be hindered e The airducts must be free of dirt e The air must circulate unhinderedly through the heat sink no hindrance e The fan is well fixed e The heat sinks are well fixed Induction coil Check e Mechanical fixing screws tightened e Coil adhesive fixing 0 k Ferrite fixing 0 k Generally Check e Protection connection to earth Screwed connections Isolations of cables Any kind of liquids that have entered the cooker Dirt in the cooker 7 Fault finding 7 1 Generally ATTENTION Do not open the cooker as long as it is connected with current
18. f 12 cm or two untreated round metallic plates approximately 4mm thick e metallic plate1 diameter d 12cm e metallic plate2 diameterd 7cm Test with pans Put the pan in the middle of the heating Heat the indicator lights area Push the pan until the edge of the pan is No heating the indicator in the middle of the heating area doesn t light Put the metallic plate in the middle of the Heat the indicator lights heating area 2 Push the metallic plate until the edge of 1 1 No heating the indicator the plate is in the middle of the heating doesn t light area 5 2 Power rating ATTENTION The heating area is warmed by the hot pan In order to avoid injuries burnings do not touch the heating area This test shows whether the rating may be set by the potentiometer You need an appropriate pan or a Wok pan for Wok types with a bottom diameter of gt 12cm Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 8 of 28 Put the pan on the heating area until 12 Heat water is boiling water is boiling 2 Reduce the power by turning slowly the 12 1 Heat rating reduces water control knob does not boil anymore phase current reduces continuosl 5 3 Maximum rating ATTENTION The heating area is warmed by the hot pan In order to avoid injuries burning do not touch the heating area For this test you need a pan with a bottom diameter of 28 cm or more resp a Wok pan for the Wok ty
19. g of 40 kg The cooker doesn t have to be fixed on the table The control knob to operate the cooker must be easily accessible To guarantee proper operation of the cooker the ambient temperature must be within the range of 5 to 40 C 40 to 110 and humidity of air between 30 to 90 The cooker may not be exposed to jet of water Induction cooker Model Flat 4 side view w ipe A air outlet air inlet l d minimal distance to the wall 4 Pan material for induction cookers Cooking with induction w it is very important to use appropriate pan material The bottom of the pan is the element that closes the magnetic field generated by the induction coil Use only appropriate pan material In order to check whether your pan is appropriate use a magnet This has to stick at the bottom of the pan If not your pan is not suitable for induction cookers Choose a pan suitable for induction Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 7 of 28 5 Tests 5 1 Pan detection Base Line only ATTENTION The heating area is warmed by the hot pan In order to avoid injuries burnings do not touch the heating area This test shows whether the induction cooker is working well when pans with a little diameter are used and if little metallic objects are heated on the heating area To do this test you need the following material e An appropriate pan with a bottom diameter o
20. llation of safety and protection have to be re installed after finishing of the work Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 3 of 28 1 4 Unauthorized reconstruction and use of spare parts Reconstruction of the cooker or changes to the cooker are not allowed Contact the manufacturer if you intend to make any changes on the cooker To guarantee safety just use genuine spare parts and accessories authorized by the manufacturer The use of other components cancels any liability for the resultant consequences 1 5 Improper operating methods The operating reliability of the cookers can only be guaranteed with appropriate application of the cooker The limit values may be exceeded on no account Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 4 of 28 2 Technical Information Base Line Type 3500 208 V 1 ph 230 V 1 ph 240 V 1 ph SH BA SH IN Wok Line Type 3500 208 V 1 ph 230 V 1 ph 240 V 1ph SH WO SH WO IN Current A A Cos os gt 05 os Discharge rate mA rate Discharge rate mA Ceramic bowl mm Type 5000 208 V 3 ph 400 V 3 ph 440 V 3 ph SH WO SH WO IN Wattage kW 89 o o o Cos gt 0 95 gt 0 95 gt 0 95 DischargeratemA 4 4 4 k Ceramic bowl mm Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 5 of 28 3 2 3 3 On the power board a main filter
21. module Logic sign High speed CMOS frequency env 20 kHz 4 GND GND Logic 5 High0 Verify transistor module Logic sign High speed CMOS frequency env 20kHz Not connected 8 High3 Not connected r iph Sign proportional to phase current range 5V to 5V Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 28 of 28
22. o take through Nr authorized personnel No heating with small Pan detection wrong adjusted Contact your supplier L s pans Poor heating indicator Used pan is not ideal Chose a pan that is lamp is ON flashes recommended for induction cooking Compare results with your Potentiometer defective Check potentiometer Air cooling system is obstructed Make sure that the air supply und air exit are not obstructed Poor heating Ambient temperature is too high Make sure that no hot the air cooling system cannot ambient air is sucked in by hold the cooker in the normal the fan Reduce the operating temperature 2 temperature of the ambient air The temperature of the air supply may not exceed 402 C 110 F One phase is missing only with Check the fuses i three phase suppl Power print defective Check power print Pore print defective Pee o logicprint No reaction on s is defective s potentiometer turning the control knob Heat rating switches Air cooling system is hindered Make sure that air supply off and on within and air exit are not hindered minutes fan is working clean air slots Heat rating switches Fan defective Check fan AF2 on and off within Fan checking defective minutes fan does not work Heat rating switches Coilis overheated heating area Switch off cooker put pan on and off within is too hot away and wait until the minutes after along Empty pan heating area has cooled Overheated oil
23. onnectors on the logic print ST1 ST4 ST5 ST6 ST7 ST8 Transistor module First dismount power print C016 C031 see 8 2 Remove the two hexagon socket screws Remove the module of the heat sink Clean the surface of the heat sink remove the heat conducting paste for example with methyl spirit Put on a new couch of heat conducting paste on the new transistor module Make sure that the whole side below is well covered with paste Fix the module with the hexagon socket screws at the heat sink Attention Measure and replace if necessary Z diodes D7 D8 D9 D10 on the power print eventually replace D7 D9 12V D8 D10 6 8V see page 26 27 Fix the power print C016 C031 see 8 2 Rectifier First dismount the power print C016 C031 see 8 2 Remove the screws Remove the rectifier from the heat sink Clean the surface of the heat sink remove the heat conducting paste for example with methyl spirit Put on a coach of heat conducting paste on the new transistor module Make sure that the whole side below is well covered with paste Service Manual new version author Chr Fuchs 17 06 99 INDUCS Ltd 18 09 03 page 23 of 28 8 6 8 7 8 8 8 9 e Fix the rectifier with the screws at the heat sink Attention Measure and replace if necessary Z diodes D7 D8 D9 D10 on the power print eventually replace D7 D9 12V D8 D10 6 8V see page 26 27 e Fixthe power print C016 C031 Fan Remove cable from binding posts K7 K8
24. pes Test cooking time 1 Put a pan on the heating area and fill it up 12 heat with some litres of water 20 Measure the time until water is cooking 12 The measured time should Type Base Line be 140 Sec litre 3 5kW 70 Sec litre 5 0kW 90 Sec litre i i 60 Sec litre i Put a pan on the heating area and fill it up 12 heat with some litres of water 20 12 Standard value 1 x 208 VAC 3 5 kW 17A 1 x 220 230 VAC 3 5 kW 16A 3 x 208 VAC 3 5 kW 10A 5 0 kW 14 A 3 x 380 400 VAC 5 kW 8A 5 5 Fan ATTENTION _ The heating area is warmed by the hot pan In order to avoid injuries burnings do not touch the heating area With this test fan fan observer as well as the degree of soiling are verified At the beginning of the test the induction cooker should be cold You need a pan with a bottom diameter of gt 28cm or a Wok pan 1 Put a pan on the heating area and fill it up with some litres of water 12 The fan should start working i after 6 8 minutes The heating process may not be interrupted indicator lamp The fan may repeatedly start and stop Stop the induction cooker The fan stops immediately 5 6 Test components CAUTION The mains cable must be switched off 5 6 1 Power board The function of the transistor modul and of the rectifier are verified Rectifier picture 1 Conducting state voltage Diode U 0 5V if all conducting state voltages show approx 0 5 V the rectifier
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