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SERVICE MANUAL COOKING

1. page 49 13 ACCESS KRONOS ORGANIZATION OF SERVICE MANUALS page 50 14 REVISIONS page 951 SOI 03 08 FV 3 51 599 37 14 84 1 INTRODUCTION This troubleshooting procedure for the KRONOS system is intended to be used with reference to the basic information contained in the theoretical Service Manual code 599 37 14 83 with the addition of flow charts block diagrams and referring to any error codes that might be shown on the display 1 1 PURPOSE OF THIS MANUAL The purpose of this Manual is to provide a general outline of an efficient troubleshooting procedure for the new KRONOS system This Manual contains the general information necessary to perform the troubleshooting procedure In relation to the various applications personalizations a brief Service Note will be issued describing the differences between the various applications 1 2 ESD ELECTROSTATIC DISCHARGE AND ITS EFFECT ON THE COMPONENTS The interface for the control unit is not fitted with an internal device to protect against electrostatic discharge When effecting repairs therefore the service engineer must check for stabilization of the potential on the oven casing i e discharge any static electricity by touching the oven casing in order to prevent the possibility of overload wh
2. page 10 7 TROUBLESHOOTING WITH ERROR CODE ON PYRO OVENS page 17 8 TROUBLESHOOTING WITHOUT ERROR CODE ON PYRO OVENS page 20 9 VARIANT FOR MODELS WITH LIGHT BAR page 25 10 DIAGNOSTICS CYCLE page 26 9 1 DIAGNOSTICS ON LEVEL 2 CONTROL UNIT NORMAL page 26 9 2 DIAGNOSTICS ON LEVEL 2 CONTROL UNIT PYRO page 28 9 3 DIAGNOSTICS ON LEVEL 3 CONTROL UNIT NORMAL page 31 9 4 DIAGNOSTICS ON LEVEL 3 CONTROL UNIT PYRO page 33 11 FUNCTIONAL DIAGRAMS page 36 11 1 FUNCTIONAL DIAGRAMS NORMAL OVEN page 36 11 1 1 FUNCTIONAL DIAGRAM LEVEL 2 NORMAL OVEN page 36 11 1 2 FUNCTIONAL DIAGRAM LEVEL 2 NORMAL OVEN WITH LIGHT BAR page 37 11 1 3 FUNCTIONAL DIAGRAM LEVEL 3 NORMAL OVEN page 39 11 2 FUNCTIONAL DIAGRAMS PYROLYTIC OVEN page 40 11 2 1 FUNCTIONAL DIAGRAM LEVEL 2 PYROLYTIC OVEN
3. page 40 11 2 2 FUNCTIONAL DIAGRAM LEVEL 2 PYROLYTIC OVEN WITH LIGHT BAR page 41 11 2 3 FUNCTIONAL DIAGRAM LEVEL 3 PYROLYTIC OVEN page 43 12 TESTS ON COMPONENTS page 39 12 1 TESTING THE TEMPERATURE SENSOR page 39 12 2 TESTING THE POWER ABSORPTION page 40 12 3 TESTING THE POWER BOARD page 40 12 4 RELEASING THE DOOR MANUALLY page 41 12 4 1 RELEASING THE DOOR MANUALLY ON ACCESS OVENS page 46 12 4 2 RELEASING THE DOOR MANUALLY ON ACCESS PLUS OVENS page 47 12 4 2 1 HOLE POSITION ON MODELS WITH TRADITIONAL DOOR OPENING AND LEFT HINGED DOOR page 47 12 4 2 2 HOLE POSITION ON MODELS WITH RIGHT HINGED DOOR page 47 12 4 2 3 RELEASING THE METEOR DOOR LOCK page 48 12 4 2 4 RELEASING THE ELTEK DOOR LOCK page 48 12 5 TESTING THE DOOR LOCK
4. A should be about 9 5 Q Ig ad I Check that the two microswitches open IEEE and close correctly in the various sequences door open door closed etc as indicated in Service Manual 599 36 07 64 section 3 5 Fig 50 HOEDAT JAG SOI 03 08 FV 49 51 599 37 14 84 13 ACCESS KRONOS ORGANIZATION OF SERVICE MANUALS In view of the quantity of theoretical technical and practical information relative to the various combinations for the structure of the ACCESS KRONOS system this information has been subdivided into Service Manuals describing the general concepts and separate Service Manuals containing specific information relative to each group of appliances Only the specific Service Manuals should be used for a specific appliance The various Service Manuals are as shown in the diagram below GENERAL PYROLYTIC MANUAL KRONOS THEORETICAL MANUAL SPECIFIC MANUAL GENERAL MANUAL STEAM KRONOS GENERAL THEORY AND TROUBLESHOOTING ACCESS MANUAL OF CHARACTERISTICS AND ACCESSIBILITY SOI 03 08 FV 50 51 599 37 14 84 14 REVISIONS 01 03 2008 Added Chapter 9 VARIANTS FOR MODELS WITH LIGHT BAR on page 25 Added diagram on page 41 Added Eltek door lock in 12 4 page 47 SOI 03 08 FV 51 51 599 37 14 84
5. OVC1000 POWER BOARD PHASE MAINS PHASE Pt500 OVEN SENSOR PT500 PSU LIGHT BAR INTERFACE BOARD R1 GRILL HEATING ELEMENT R2 LOWER HEATING ELEMENT BOTTOM R3 UPPER HEATING ELEMENT CEILING R4 CONVECTION HEATING ELEMENT CIRCULAR REL1 SAFETY MAIN RELAY SOI 03 08 FV REL2 CONTROL RELAY FOR CONVECTION HEATING ELEMENT REL3 CONTROL RELAY FOR UPPER HEATING ELEMENT REL4 CONTROL RELAY FOR GRILL HEATING ELEMENT REL5 CONTROL RELAY FOR LOWER HEATING ELEMENT SENSOR PCB SENSOR INTERFACE BOARD Thi SAFETY THERMOSTAT TO1 CONTROL TRIAC FOR OVEN LAMP TO CONTROL TRIAC FOR CONVECTION FAN TO3 CONTROL TRIAC FOR TANGENTIAL COOLING FAN TO4 CONTROL TRIAC FOR SPIT MOTOR NOT USED TO5 CONTROL TRIAC FOR DOOR INTERLOCK NOT USED TRO LOW POWER TRANSFORMER 38 51 599 37 14 84 11 1 3 KRONOS DISPLAY L3 Fig 37 KEY DISPLAY L3 KRONOS CONTROL UNIT LEVEL 3 Ground MAINS EARTH L1 OVEN LAMP MG1 CONVECTION FAN MG2 TANGENTIAL COOLING FAN MG3 SPIT MOTOR Neutral MAINS NEUTRAL Phase RETE FASE RT1 OVEN SENSOR PT500 R1 GRILL HEATING ELEMENT R2 LOWER HEATING ELEMENT BOTTOM R3 UPPER HEATING ELEMENT CEILING R4 CONVECTION HEATING ELEMENT CIRCULAR OVC1000 POWER BOARD REL1 SAFETY MAIN RELAY SOI 03 08 FV i TC1 HEL2 REL3 REL4 REL5 TC1 TO1 TO2 TO3 TO4 TOS TRO1 39
6. Relay on power board faulty Replace the control board display Replace the board Replace the temperature sensor Position and Fix the temperature sensor correctly Replace the power board 599 37 14 84 Error code F08 No communicatio n between display board and power board Error code F09 Software wrong Error code F10 Triac on power board faulty SOI 03 08 FV Check the continuity of the connection between the control board display and the power board Check if the board replaced is indicated in the relative spare part catalogue Detach the power loads from the triac of the power board one by one checking if error F10 disappears Resistance check of the detached load Correct connection No correct correction No correct board The board seems correct The error code F10 disappears The error code F10 disappears Meas of the resistance correct Meas of the resistance not correct 9 51 Control board display faulty False contacts on the connection connectors Wrong error code Software inside the board is not compatible Power board faulty Power board faulty Load detached and power board faulty Replace the board Replace the control board display Repair the connection Use the correct board Use the correct board Replace the board Replace th
7. SOI 03 08 FV Perform the diagnostics cycle see pages 28 and 33 Ohmic measure of the temperature sensor The door does not lock and unlock correctly The door locks and unlocks correctly Resistance is 520 570 Q depending on the room temperature refer to S M 599371483 page 17 Temperature senso short circuited or interrupted 17 51 Door lock faulty False contacts on the wiring EEPROM memory On the control board display faulty Power board faulty Temperature sensor faulty Replace the door lock Repair the false contacts on the wiring Replace the control board display Replace the power board Replace the temperature sensor 599 37 14 84 The door does not lock and unlock correctly Error code Perform the FO5 diagnostics temperature cycle safety limit see pages 28 exceeded and 33 overheating detected Kun Test resulted Door lock faulty Replace door test of the door negative lock see door lock Test resulted Power board Replace positive faulty power board test page 41 The door locks and unlocks correctly When the oven Power absorption is is cold switch it less than about on and then off 5OW to reset the error code then check power absorption in the oven lamp function refer to page 45 Fastening and Fastening or Fastening screw Position and position of the position not tightened correctly
8. The user interfaces 1 are the various control units including the control interfaces if present The power board receives information from the control units and signals from the input devices 3 in order to control the output devices 4 The input devices are sensors which transfer to the system any variations in temperature as well as thermostats in some models which guarantee user safety in case of overheating Out devices include the heating elements the oven light and the various motors oven fans rotary spits and if present the door lock SOI 03 08 FV 6 51 599 37 14 84 4 ERROR CODES The KRONOS system performs an internal autodiagnostics routine and when a malfunction is detected displays the corresponding error code The error code is shown on the display as shown in the figures relative to the various levels see figg 3 4 The table below describes the various error codes ERROR CODE DESCRIPTION OF THE CAUSE F02 Door lock system featured only on pyrolytic ovens EEPROM Memory on Control Unit F04 Oven sensor temperature range exceeded condition occurs for more than 5 seconds ne safety limit exceeded gt 350 on normal ovens gt 530 C on pyrolytic ovens condition occurs for more than 10 seconds Communication interruption between Control unit and power board Software compatibility between Control unit and power board F10 Faulty triac on power board Exa
9. temperature incorrect fasten the sensor temperature Sensor Power absorption Relay on power Replace the is more than about board faulty power board 50W SOI 03 08 FV 18 51 599 37 14 84 Error codeF08 No communicatio n between display board and power board Error code FO9 Software wrong Error code F10 Triac on power board faulty SOI 03 08 FV Check the continuity of the connection between the control board display and the power board Check that the board to be replaced is indicated on the relative spare part catalogue Detach the loads on the of the power board one by one checking if error F10 disappears Ohmic control of the detached load Control board display faulty Correct connection Incorrect connection False contacts on the connectors Board not correct Wrong error code Board seems correct Software inside the board is not compatible Error code F10 disappears Ohmic measure correct Detached load and hmi Ohmic measure power board faulty incorrect 19 51 Replace the control board display Repair the connection Use the correct board Use the correct board Power board Replace the faulty board Replace the detached load motor or lamp and the power board 599 37 14 84 8 TROUBLESHOOTING WITHOUT ERROR CODES ON PYROLYTIC OVENS The cooling fan does not switch on The oven P
10. Certain sections of the display do not light The test resulted negative The test resulted positive 24 51 Incorrect version of the control display board software incompatible Control display board faulty Door lock faulty Power board faulty Connection wiring door lock with board Connector Pos RS02 Replace the control display board with the correct version for the appliance Replace the board Replace the door lock Replace the board Check wiring 599 37 14 84 9 VARIANT FOR MODELS WITH LIGHT BAR The troubleshooting part below is dedicated to the light bar and the relative control board featured only on some models The light bar Are the power The connections False contacts or Repair the does not light connections to are correct faston not inserted connections up the Light Bar correctly interface board correct The connections are correct Disconnect the connection cable Light bar interface board Control unit Replace the The bar lights up Control unit Control unit faulty The bar does not light up Are the The connections False contacts or Repair the connection are correct faston not inserted connections cables between correctly Light Bar interface board ahs a bar The connections Control unit faulty correct are correct Check the At least one of the Light bar assembly Replace the light efficiency of Leds is faulty
11. CONTROL RELAY FOR GRILL HEATING ELEMENT FAN HEATING ELEMENT DOUBLE SPEED MICROSWITCH DOOR INTERLOCK MICROSWITCH DOOR CLOSED SAFETY THERMOSTAT DOOR INTERLOCK THERMOSTAT CONTROL TRIAC FOR OVEN LAMP CONTROL TRIAC FOR CONVECTION FAN CONTROL TRIAC FOR TANGENTIAL COOLING FAN CONTROL TRIAC FOR COOLING TANGENTIAL FAN DOUBLE SPEED CONTROL TRIAC FOR DOOR INTERLOCK LOW POWER TRANSFORMER 599 37 14 84 11 2 2 FUNCTIONAL DIAGRAM LEVEL 2 PYROLYTIC OVEN WITH LIGHT BAR dr CCUCDCMOM fe e eje eje eee B 1 AV T1dSIO SONOHBHM Buro mos dum us Fig 39 599 37 14 84 41 51 SOI 03 08 FV KEY DISPLAY L2 KRONOS CONTROL UNIT LEVEL 2 Ground MAINS EARTH L1 OVEN LAMP LEDBAR _ LIGHT BAR ASSEMBLY MG1 CONVECTION FAN MG2 TANGENTIAL COOLING FAN NEUTRAL MAINS NEUTRAL OVC1000 POWER BOARD PHASE MAINS PHASE Pt500 OVEN SENSOR PT500 PSU LIGHT BAR INTERFACE BOARD R1 GRILL HEATING ELEMENT R2 LOWER HEATING ELEMENT BOTTOM R3 UPPER HEATING ELEMENT CEILING R4 CONVECTION HEATING ELEMENT CIRCULAR RL DROP RESISTANCE FOR FAN DOUBLE SPEED REL1 SAFETY MAIN RELAY REL2 CONTROL RELAY FOR CONVECTION HEATING ELEMENT SOI 03 08 FV REL3 CONTROL RELAY FOR UPPER HEATING ELEMENT REL4 CONTROL RELAY FOR GRILL HEATING ELEMENT REL5 CONTROL RELAY FOR LOWER HEATING ELEMENT SENSOR PCB SENSOR INTER
12. board is not correct Sensor board control panel assy faulty Wiring connection of Sensor board Control Unit is not correct Sensor board assembly faulty Control Unit faulty Wrong code of the control display board software not compatible Repair or replace the wiring Replace the board control panel assembly Repair and replace the wiring Replace the Sensor board assy Replace the Control Unit Replace the control display board with the one relative to the model 599 37 14 84 Certain sections Perform the All sections of the Incorrect version of Replace the of the display diagnostics display light the control display control display do not light routine correctly board software board with the see pages 26 incompatible correct version 31 for the appliance Certain sections Control display Replace the of the display do board faulty board not light SOI 03 08 FV 16 51 599 37 14 84 7 TROUBLESHOOTING USING ERROR CODES ON PYROLYTIC OVENS Troubleshooting based on error codes helps to identify the component or a specific section of the circuitry in the appliance When a malfunction is detected by the control circuit the appliance shows the error code on the display and then switches off Error code F02 Door lock faulty Error code FO3 EEPROM Memory faulty Error code F04 Temperature sensor short circuited or interrupted
13. routine see page 26 31 heck that the sensor board is correctly mounted on the control panel so that they adhere Check that the connection of the Control Unit Sensor Board wiring is correct Perform the key test directly on the Control Unit see specific Manual Activating the sequence of the control zones the action shown in the diagnostics cycle is not performed see page 25 The adherence board control panel is correct The connection is correct The test is positive The test is negative 14 51 Wiring connection Sensor board Control Unit not correct Sensor board assy faulty Control Unit faulty Repair or replace the wiring Replace the Sensor board assembly Replace the Control Unit 599 37 14 84 SOI 03 08 FV Select the beep when pressed function and press all the control zones in sequence Perform the key test directly on the Control Unit see specific Manual The wiring connection Control Unit Sensor board is not correct The adherence Sensor board control panel is not correct g sequence of the control zones the action shown in the diagnostics cycle is not performed page 26 31 Some of the zones do not emit a beep The test is positive The test is negative All the control zones emit a beep when activated 15 51 Cause The wiring connection Control Unit Senspr
14. the mechanical action of the Keys is correct Select the beep when pressed function and press all the keys in sequence Check that the board is correctly mounted on the control panel so that the mechanical action of the keys is correct When the keys are pressed in sequence the action shown in the diagnostics cycle is not performed see pages 28 and Mechanical action OK Mechanical action incorrect When the keys are pressed in sequence the action is as shown in the diagnostics cycle see pages 28 and 33 Some of the keys do not emit a beep Mechanical action OK Mechanical action incorrect All the keys emit a beep when pressed 23 51 Control Display board faulty Assembly of control display board and control panel Control Display board faulty Assembly of control display board and control panel Incorrect version of the control display board software incompatible Replace the board Fit the board correctly Replace the board Fit the board correctly Replace the control display board with the correct version for the appliance 599 37 14 84 Certain sections of the display do not light Selecting a function the oven does not start It does not heat SOI 03 08 FV Perform the diagnositcs cycle see pages 28 and 33 Check the door lock see page 49 All sections of the display light correcily
15. 1 HOLE POSITION ON MODELS WITH TRADITIONAL OPENING DOOR AND LEFT HINGED DOOR Fig 46 HDCUO2484 JPG 12 4 2 2 HOLE POSITION ON MODELS WITH RIGHT HINGED DOOR HbDCO2485 JPG Fig 47 SOI 03 08 FV 47 51 599 37 14 84 12 4 2 3 RELEASING THE METEOR DOOR LOCK To release the door lock manually on Access Plus ovens with METEOR door lock it is necessary to remove the hook screw through a hole on the front panel see 11 4 1 1 Insert a 3mm screwdriver into the hole to remove the hook fixing screw 2 Remove the hook fixing screw in this way the closure hook lifts up releasing the door see Fig 48 3 Check the operation of the door lock and if faulty replace it see 11 5 Fig 48 1 3mm CROSS SCREWDRIVER 2 HOLE TO ACCESS THE SCREW 12 4 2 4 RELEASING THE ELTEK DOOR LOCK To release the door lock manually on Access Plus ovens with ELTEK door lock it is necessary to remove directly the hook through the hole on the front panel see 11 4 1 1 Insert a 3mm screwdriver into the hole to lift up the closure hook of about 3 mm to allow releasing the door lock see Fig 49 2 Check the operation of the door lock and if faulty replace it see 12 5 Fig 49 HDC02486 JPG 1 3 mm SCREWDRIVER 2 HOLE TO ACCESS THE DOOR LOCK HOOK SOI 03 08 FV 48 51 599 37 14 84 12 5 TESTING THE DOOR LOCK Measure the resistance of the winding of the door lock actioning motor which
16. 4 Electrolux SERVICE MANUAL COOKING Distriparts THIS DOCUMENT UPDATES AND REPLACES THE PREVIOUS ONE WITH SAME NUMBER Built in ovens and Cookers ELECTROLUX HOME PRODUCTS Publication Corso Lino Zanussi 30 number GENERAL 33080 PORCIA PN ITALY 599 37 14 84 TROUBLESHOOTING el 39 0434 394850 Fax 439 0434 394096 IT SERVICE FV PROCEDURE KRONOS SOI OVC1000 Edition 03 2008 Rev 01 SOI 03 08 FV 1 51 599 37 14 84 SOI 03 08 FV 2 51 599 37 14 84 CONTENTS 1 INTRODUCTION page 4 1 1 PURPOSE OF THIS MANUAL page 4 1 2 ESD page 4 2 DIAGNOSTICS AND APPROACH TO THE SYSTEM page 5 2 1 ERROR CODE DISPLAY ee EE ee ee ee ee Ee ee ee page 6 2 2 MEMORISATION OF ERROR CODES ee ee ee ee ee ee Ee ee ee ee ee page 6 3 GENERAL BLOCK DIAGRAM page 6 4 ERROR CODES 2 02 02 EE EE nnn nnn nnn nnn ncn EE ee page 7 5 TROUBLESHOOTING WITH ERROR CODE ON NORMAL OVENS page 8 6 TROUBLESHOOTING WITHOUT ERROR CODE ON NORMAL OVENS
17. 400 Q Power board faulty Power board faulty Power board faulty Power board faulty Replace the board Replace the board Replace the board Replace the board does not switch on Oven lamp faulty Replace the Open circuit oo infinite lamp SOI 03 08 FV 21 51 599 37 14 84 The oven is completely switched off The display operates but the oven does not heat in any function SOI 03 08 FV Check for power supply to the terminal block Disconnect the appliance from the power supply and perform the test on the power board see page 45 Check the TC1 safety thermostat for continuity No power supply Power supply OK The resistance is more than 2 KO or less than 1 KO The resistance is between 1KQ and 2 KO No continuity Continuity 22 51 Power cable faulty No mains power at the power socket Power board faulty Control Display board faulty Wiring connections faulty Thermostat TC1 faulty Power board faulty Replace the power cable Check the electrical power circuit Replace the board Replace the board Repair the wiring Replace the thermostat Replace the board 599 37 14 84 Certain keys do not send the correct signal SOI 03 08 FV Perform the diagnostics routine see pages 28 and 33 Check that the board is correctly mounted on the control panel so that
18. 51 FUNCTIONAL DIAGRAM LEVEL 3 NORMAL OVEN HDCO1078 JP G CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR UPPER HEATING ELEMENT CONTROL RELAY FOR GRILL HEATING ELEMENT CONTROL RELAY FOR LOWER HEATING ELEMENT SAFETY THERMOSTAT CONTROL TRIAC FOR OVEN LAMP CONTROL TRIAC FOR CONVECTION FAN CONTROL TRIAC FOR TANGENTIAL COOLING FAN CONTROL TRIAC FOR SPIT MOTOR CONTROL TRIAC FOR DOOR INTERLOCK LOW POWER TRANSFORMER 599 37 14 84 11 2 11 2 1 KRONOS DISPLAY L2 id dd Ad dd do Fig 38 KEY DISPLAY L2 KRONOS CONTROL UNIT LEVEL 2 DL DOOR INTERLOCK ASSY Ground MAINS EARTH L1 OVEN LAMP MG1 CONVECTION FAN MG2 TANGENTIAL COOLING FAN MG3 SPIT MOTOR Neutral MAINS NEUTRAL Phase RETE FASE RTi OVEN SENSOR PT500 R1 GRILL HEATING ELEMENT R2 LOWER HEATING ELEMENT BOTTOM R3 UPPER HEATING ELEMENT CEILING R4 CONVECTION HEATING ELEMENT CIRCULAR OVC1000 POWER BOARD REL1 SAFETY MAIN RELAY REL3 CONTROL RELAY FOR UPPER HEATING ELEMENT REL5 CONTROL RELAY FOR LOWER HEATING ELEMENT SOI 03 08 FV REL2 REL4 RL swi Th TER gt OG lt lt TOP TOS TO4 TO5 TRO1 40 51 FUNCTIONAL DIAGRAM PYROLYTIC OVEN FUNCTIONAL DIAGRAM LEVEL 2 PYROLYTIC OVEN Phase X OWC1000 HDCO1081 JPG CONTROL RELAY FOR CONVECTION HEATING ELEMENT
19. FACE BOARD SW1 MICROSWITCH DOOR INTERLOCK HOOK SW2 MICROSWITCH DOOR INTERLOGK Th1 SAFETY THERMOSTAT Th2 DOOR LOCK THERMOSTAT TO1 CONTROL TRIAC FOR OVEN LAMP TO2 CONTROL TRIAC FOR CONVECTION FAN TO3 CONTROL TRIAC FOR TANGENTIAL COOLING FAN TO4 CONTROL TRIAC FOR COOLING TANGENTIAL FAN DOUBLE SPEED TO5 CONTROL TRIAC FOR DOOR INTERLOGK TRO1 LOW POWER TRANSFORMER 42 51 599 37 14 84 112 3 FUNCTIONAL DIAGRAM LEVEL 3 PYROLYTIC OVEN Fig 38 KEY DISPLAY L3 KRONOS CONTROL UNIT LEVEL 3 DL DOOR INTERLOCK ASSY Ground MAINS EARTH L1 OVEN LAMP MG1 CONVECTION FAN MG2 TANGENTIAL COOLING FAN MG3 SPIT MOTOR Neutral MAINS NEUTRAL Phase RETE FASE RTi OVEN SENSOR PT500 Ri GRILL HEATING ELEMENT R2 LOWER HEATING ELEMENT BOTTOM R3 UPPER HEATING ELEMENT CEILING R4 CONVECTION HEATING ELEMENT CIRCULAR OVC1000 POWER BOARD REL1 SAFETY MAIN RELAY REL3 CONTROL RELAY FOR UPPER HEATING ELEMENT REL5 CONTROL RELAY FOR LOWER HEATING ELEMENT SOI 03 08 FV REL2 REL4 RL SW1 TC1 TC2 TO1 TO2 TO3 TO4 TO5 TRO1 43 51 4 E Phasa TEA ten i Meutral i Ground R1 R2 R3 R4 Gr Botiom Top Ring Ham H Tap Bing M PE P OWC1000 HDCO1085 JPG CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR GRILL HEATING ELEMENT FAN HEATING ELEMENT DOUBLE SPEED MICROSWITCH DOOR INTERLOCK MICROSWI
20. KH10 HON i JEG Fig 20 End of test On o OM FHU Pyro V A d a D E m RS 29 SKHI SKH2 SKH5 SKH6 SKH8 SKH3 SKHI0 Fig 21 SOI 03 08 FV 30 51 599 37 14 84 10 3 DIAGNOSTICS LEVEL 3 CONTROL UNIT NORMAL To activate the diagnostics cycle in the base version it is necessary Press buttons FHU and Q simultaneously within some seconds after the switching on The test has the following sequence Switching on a Kaeo eE On olf Ove Recip FHU 7 Ay e P T 2 m e e m SKH1 SKH4 SKH3 SKH4 SKH5 SKHE SKH SKHA HEM DT ZA JPG Fig 22 Activation of the test Onsoft Ovi Recip FHU 7 ZN a JG d 2 D E SKH1 SKH4 SKH3 SKH4 SKHS SKHE SKH SKHB HOO 1126 JPG Fig 23 Displaying of the display segments Onofi Ov Recip FHU V AN e iJ 9 uS 4 D a c3 mem E SkH4 SKH3 SKH4 SKH5 SKH6 SKH7 N SKH8 Fig 24 SOI 03 08 FV 31 51 599 37 14 84 Displaying of programme code and Sensor temperature 25 KALU TER On olf Ov Recip FHU T a OS Id e 3 89 HDCO1128 JPG SkH1 SEH4 SKH3 SKH4 SKHS SKHE SKH7 SKHE Fig 25 Power and auxiliary loads test On oft Ovi Recip FHU AUS o NT 22 UT SKHI SKH4 SKH3 SkH4 A SKHE SKHB SKH7 SKHB Fig 26 End of test TO X K A N L ME i j On oll Ove Recip FHU V fe zy J 2 T J 2 6 T SKH1 SKH4 SKH3 SKH4 SKH5 SKHE SKH7 SKH8 Fig 27 SOI 03 08 FV 32 51 599 37 14 84 10 4 DIAGNOSTICS LEVEL 3 CONTROL UNIT PYRO To activate the diagnostics cycle in the base ver
21. RAMS NORMAL OVEN 11 1 1 FUNCTIONAL DIAGRAM LEVEL 2 NORMAL OVEN 606600006000 KRONOS DISPLAY L2 Fig 35 KEY DISPLAY L2 KRONOS CONTROL UNIT LEVEL 2 Ground MAINS EARTH L1 OVEN LAMP MG1 CONVECTION FAN MG2 TANGENTIAL COOLING FAN MG3 SPIT MOTOR Neutral MAINS NEUTRAL Phase RETE FASE RTi OVEN SENSOR PT500 Ri GRILL HEATING ELEMENT R2 LOWER HEATING ELEMENT BOTTOM R3 UPPER HEATING ELEMENT CEILING R4 CONVECTION HEATING ELEMENT CIRCULAR OVC1000 POWER BOARD REL1 SAFETY MAIN RELAY SOI 03 08 FV REL2 REL3 REL4 REL5 TC1 TO1 TO2 TO3 TO4 TOS TRO1 36 51 HDCO1077 JPG CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR UPPER HEATING ELEMENT CONTROL RELAY FOR GRILL HEATING ELEMENT CONTROL RELAY FOR LOWER HEATING ELEMENT SAFETY THERMOSTAT CONTROL TRIAC FOR OVEN LAMP CONTROL TRIAC FOR CONVECTION FAN CONTROL TRIAC FOR TANGENTIAL COOLING FAN CONTROL TRIAC FOR SPIT MOTOR CONTROL TRIAC FOR DOOR INTERLOCK LOW POWER TRANSFORMER 599 37 14 84 FUNCTIONAL DIAGRAM LEVEL 2 NORMAL OVEN WITH LIGHT BAR 11 1 2 82d HOSNAS 1 Avldsid SONOUA Fig 36 599 37 14 84 37 51 SOI 03 08 FV KEY DISPLAY L2 KRONOS CONTROL UNIT LEVEL 2 Ground MAINS EARTH L1 OVEN LAMP LEDBAR LIGHT BAR ASSEMBLY M1 CONVECTION FAN M2 TANGENTIAL COOLING FAN NEUTRAL MAINS NEUTRAL
22. TCH DOOR CLOSED SAFETY THERMOSTAT DOOR INTERLOCK THERMOSTAT CONTROL TRIAC FOR OVEN LAMP CONTROL TRIAC FOR CONVECTION FAN CONTROL TRIAC FOR TANGENTIAL COOLING FAN CONTROL TRIAC FOR SPIT MOTOR CONTROL TRIAC FOR DOOR INTERLOCK LOW POWER TRANSFORMER 599 37 14 84 12 TESTING THE COMPONENTS 12 1 TESTING THE OVEN TEMPERATURE SENSOR In case of doubt regarding the correct operation of the oven temperature sensor use an ohmmeter to measure Its resistance as follows HD000700 TIF Fig 40 Fig 39 The resistance should be approximately 500 600 ohm at room temperature It is important to measure the insulation resistance between the metal casing and each of the terminals which must be greater than 2 Mohm SOI 03 08 FV 44 51 599 37 14 84 12 2 POWER ABSORPTION TESTS The power absorption can be measured using the appropriate instrument e g wattmeter which should be applied between the power supply and the appliance The table below also shows indicative values for the relative current absorption in the event that an amperometric pincer is used for measurement POWER ABSORPTION CURRENT ABSORPTION W A 50 0 20 1700 7 40 2000 8 70 NOTA The values measured refer to a power supply voltage of 230 V 12 3 TESTING THE POWER BOARD The continuity of the primary winding of the power transformer on the power board can be checked by measuring the ohmic resistance on the power supply terminal block The test poin
23. board 599 37 14 84 Perform the diagnostics Certain keys do not send the correct routine signal see pages 26 31 Check that the board is correctly mounted on the control panel so that the mechanical action of the Keys is correct Select the beep when pressed function and press all the Keys in sequence Check that the board is correctly mounted on the control panel so that the mechanical action of the Keys is correct SOI 03 08 FV When the keys are pressed in sequence the action shown in the diagnostics cycle is not performed Mechanical action OK Mechanical action incorrect When the keys are pressed in sequence the action is as shown in the diagnostics Some of the keys do not emit a beep Mechanical action OK Mechanical action incorrect All the keys emit a beep when pressed 13 51 Control Display board faulty Assembly of control display board and control panel Control Display board faulty Assembly of control display board and control panel Incorrect version of the control display board software incompatible Replace the board Fit the board correctly Replace the board Fit the board correctly Replace the control display board with the correct version for the appliance 599 37 14 84 Some control zones do not send the signal only for Touch models DEE SOI 03 08 FV Perform the diagnostics
24. e load detached motor or lamp and the power board 599 37 14 84 6 TROUBLESHOOTING WITHOUT ERROR CODES The cooling fan does not switch on The oven Perform the operates for a diagnostics short time then cycle switches off see pages 26 31 Power board Replace the Check the Continuity faulty ete winding of the cooling fan for continuity Cooling fan faulty Replace the cooling fan No continuity The convection fan does not switch on Poor cooking Perform the results in fan diagnostics cooking mode cycle i e using the see pages 26 convection fan 31 Check the winding of the convection fan for continuity m Power board Replace the Continuity faulty board Convection fan Replace the faulty convection fan No continuity SOI 03 08 FV 10 51 599 37 14 84 In functions Perform the The spit motor where it is diagnostics does not switch on used the spit cycle motor does not see pages 26 start 31 Power board Replace the Check the Continuity faulty board winding of the spit motor for continuity Spit motor faulty Replace the No continuity spit motor When the oven is switched on the cooling fan starts immediately Perform the The cooling fan Power board Replace the diagnostics starts immediately faulty board cycle see pages 26 31 When the oven is switched on the convection fan starts Perform the The convection fan Power board Replac
25. e the diagnostics starts immediately faulty board cycle see pages 26 immediately l ES When the oven is switched on the spit motor cycle starts see pages 26 immediately ES Perform the The spit motor Power board Replace the diagnostics starts immediately faulty board SOI 03 08 FV 11 51 599 37 14 84 The oven lamp does not light when the oven is switched on The oven is completely switched off The display operates but the oven does not heat in any function SOI 03 08 FV Check for ohmic continuity of the oven lamp Check for power supply to the terminal block Disconnect the appliance from the power suppl and perform the test on the powe board see page 43 Check the continuity of the safety thermostat TC1 Continuity from 150 to 400 Q Circuit open oo infinite No power supply Power supply OK The resistance is more than 2 KO or less than 1 KO The resistance is between 1KQ and 2 KO No continuita Continuita 12 51 Power board faulty Oven lamp faulty Power cable faulty No mains power at the power socket Power board faulty Control Display board faulty Replace the board Replace the oven lamp Replace the power cable Check the electrical power circuit Replace the power board Replace the board wm wiring Thermostat TC1 Faulty Power board faulty Replace the thermostat Replace the power
26. erform the operates for a diagnostics short time then cycle switches off see pages 28 and 33 i Replace the Check the Continut Heating element winding of the RL faulty neal element cooling fan for continuity Power board Replace the faulty board No continuity Cooling fan faulty Heen A The convection fan does not switch on Poor cooking Perform the results in fan diagnostics cooking mode cycle i e using the see pages 28 convection fan and 33 Power board Replace the Check the Continuit windincser the y faulty board convection fan for continuity Cooling fan faulty Replace the cooling fan No continuity The oven Check the The cooling fan Triac TO4 on the Replace the operates for a cooling fan at does not work at power board faulty board short time with high speed high speed the pyrolysis cycle then switches off SOI 03 08 FV 20 51 599 37 14 84 When the oven is switched on the cooling fan starts immediately The cooling fan remains on also when the oven is cold When the oven is switched on the convection fan starts immediately When the oven is switched on the oven lamp Perform the diagnostics cycle see pages 28 and 33 Perform the diagnostics cycle see pages 28 and 33 Check the oven lamp for ohmic continuity The cooling fan starts immediately The convection fan starts immediately Continuity from 150 to
27. faulty bar assembly both Leds The LEDs are ok Light bar interface Replace the board faulty Light bar interface board SOI 03 08 FV 25 51 599 37 14 84 10 DIAGNOSTICS CYCLE 10 1 DIAGNOSTICS LEVEL 2 CONTROL UNIT NORMAL To activate the diagnostics cycle in the base version it is necessary Press buttons FHU and simultaneously within some seconds after the switching on The test has the following sequence Switching on On off Ovi FHU V A e c Tm c T D e SEH3 SEHA SKH5 SKHE SKH SKHE HDCO1108 JPG Fig 5 Activation of the test On ott Ovi FHU 7 A e So Ee Oo HEDE JPG SKH3 SKH4 SKH5 SKHE SEH SKHB8 Displaying of the display segments Fig 6 On off Ow FHU V AN e s dy zB 2 J SKH3 SEHA SEH5 SKHE SEH SEHS HEG DOT IO JPG Fig 7 SOI 03 08 FV 26 51 599 37 14 84 Displaying of the programme code n of Ow FHLI V A d S 2 2 SEH3 SKH4 SEH5 SKH6 SKH SEHB HOCO1111 JPG Fig 8 Sensor temperature 25 On ott Ov FHU 7 A ae 3 ee 2 3 E HDCDIMZ PG SKH3 SEH4 SKH5 SKHE SKH7 SKHB Fig 9 Power and auxiliary loads test On ott ov FHU 7 AN a S D 25 3 m SKH3 SKH4 SKHE SKHE SKH7 SKH8 HDCD1113 JPG Fig 10 End of test On olf Owl FHU T A e L Rok E J ee LE HDCOI 4 IPG SKH3 SKH4 SKH5 SKH6 SKH7 SKHB Fig 11 SOI 03 08 FV 27 51 599 37 14 84 10 2 DIAGNOSTICS LEVEL 2 CONTROL UNIT PYRO To activate the diagnostics cycle in the base versio
28. ich might damage the control unit The same care Is necessary when handling control units supplied as spare parts i e not yet fitted to the oven which must be removed from the protective bag in ESD only after stabilizing the potential i e discharging any static electricity and only then installed in the appliance Important The theory behind the process of electrostatic charge and discharge is not discussed in this Manual since the tangible effects are considered to be more important However the effects are felt frequently when touching a metal handle and feeling the electrostatic discharge in the form of a minor shock But what happens when stabilization of the potential takes place with semi conductor components i e components on a circuit board such as integrated circuits microprocessors etc Stabilization of the potential takes place across the internal structure of the component This does not necessarily lead to the immediate destruction of the component subsequent malfunctions across damaged internal connections may be more harmful and these occur only as a result of overheating or current overloads It is true that almost all sensitive semi conductor components such as MOS circuits have been improved by the addition of protective measures but the internal structures of these components are today smaller than for example ten years ago which tends to increase their sensitivity to the previous levels Important Which c
29. mples of the way in which error codes are displayed are shown below Example of error code F05 on level 2 control unit fe aE C2 C Fig 3 UM rice Example of error code F05 on level 3 control unit Fig 4 HDC001139 JPG SOI 03 08 FV 7 51 599 37 14 84 5 TROUBLESHOOTING USING ERROR CODES ON NORMAL OVENS Troubleshooting based on error codes helps to identify the component or a specific section of the circuitry in the appliance When a malfunction is detected by the control circuit the appliance shows the error code on the display and then switches off Error code FO3 EEPROM Memory faulty Error code F04 temperature sensor short circuited Error code F05 temperature safety limit exceeded SOI 03 08 FV Measure the resistance of the temperature sensor When the oven is cold switch it on and then off to reset the error code then check power absorption in the oven lamp function refer to page 38 Fixing and position of the temperature sensor Resistance is 520 570 Q depending on the room temperature refer to S M 599371483 page 17 Temperature sensor short circuited or interrupted Power absorption is less than about 50W Position or Fixing not correct Power absorption is more than 50W 8 51 EEPROM Memory On control board display faulty Power board faulty Temperature sensor faulty Fastening screw not tightened
30. n it is necessary Press buttons FHU and Q simultaneously within some seconds after the switching on The test has the following sequence Switching on On olf Ov FHU Pyro V AN a gg 9 5 T D SKH1 SKH2 SEHS SKHE SKH SKH3 SKH10 Fig 12 Activation of the test On off Ovi FHL Pyro 7 A e RS E E ae SKHI SKH2 SKHS SKH6 SKH8 SKH9 SKHIO HLKZD1116 JPG Fig 13 Displaying of the display segments n olf Ow FHU Pyro V A STE JE mS 8 SKH1 SKH2 SKH5 SKHE SKHB SKHS SKH10 HLDCO1117 JPG Fig 14 SOI 03 08 FV 28 51 599 37 14 84 Displaying of the programme code On olf Ow FHU Pyro kra A a 2 SE N se SKH1 SKH2 SKH5 SKHE SKHB SKHS SKH10 HDCOTTTB JPG Fig 15 Door closed not locked 02 Sensor temperature 25 On olf Ow FHU Pyro V A a go DO 2 2 MS SKH1 SKH2 SKH5 SKHE SKH8 SKH3 SKH10 Fig 16 Door open not locked 02 Sensor temperature 25 On oft Ov FHU Pyro V A d e J kA 2 LD l e SKH1 SKH2 SKH5 SKHE SKHB SKH8 SKHIO HDCO1120 JP Fig 17 Door locked On off Ovi FHU Pyro V A ad T D D id 2 5 B SEH1 SKH2 SKHS SKHE SKH8 5KH3 SKH10 HLICDT141 JPG Fig 18 SOI 03 08 FV 29 51 599 37 14 84 Power and auxiliary loads test On of Ov FHU Pyro 7 AN d 2 gt 3 2 lt SKHT SKH2 SKH5 SKHB SKH8 SKH3 SKH10 HDCO1122 JPG Door lock deactivated Fig 19 On olf Ow FHU Pyro V A a LJ me LJ i S KS A SKH1 SKH2 SKH5 SKHG SKH8 SKH9 S
31. omponents are susceptible to damage by static electricity during repairs All circuit boards featuring accessible control and command connections door switches food probes etc bare tracks and microprocessors as well as any other circuits with free access Examples Programmers with accessible connections for the food probe and the door switch Programmers whose control processors are accessible due to their high costs the protective systems are only partial W O E C control units 0 E C control units C H E C control units KRONOS control units R H E A control units SOI 03 08 FV 4 51 599 37 14 84 2 DIAGNOSTICS AND APPROACH TO THE SYSTEM In view of the diversified nature and the flexibility of the system it is necessary to adopt a method of approach to each specific type of fault In other words it is important to identify in detail the phenomena that take place when a fault occurs by attempting to correctly interpret the user s complaint For example if the user makes a service call because the oven is off this may be due to The oven does not switch on The oven switches on for a few moments and then switches off The display is lit but the oven does not heat Even in an oven with a traditional programming system these three phenomena require three different approaches to locating the fault In a more complex system such as Kronos it is even more important to correctly interpret the
32. phenomena that occur In order to facilitate the process of identification It is necessary to subdivide the system into separate blocks and then to identify the block in which the fault has occurred A first classification may be as follows OVEN MALFUNCTION FAULT WITH FAULT WITHOUT INDICATION OF AN INDICATION OF AN ERROR CODE ERROR CODE Fig 1 If the fault is accompanied by an error code it is easier to identify As explained in greater detail in sections 5 7 and 9 the appearance of an error code indicates a situation that has been detected by the system SOI 03 08 FV 5 51 599 37 14 84 2 1 ERROR CODE DISPLAY The normal flow of information governed by the microcontroller is monitored by an internal programme in the event of certain malfunctions the relative information is shown on the display in the form of an error code 2 2 MEMORISATION OF ERROR CODES The data relative to the error code are memorized in one of the registers in the microcontroller When an error code is displayed the oven switches off To reset the error code switch the oven off and then on 3 GENERAL BLOCK DIAGRAM In order to facilitate troubleshooting especially when no error code is displayed it may be useful to represent the system in the form of a block diagram LIVELLO2 LIVELLO3 Fig 2 1 User interface control units 1 2 and 3 2 Power board OVC1000 3 Input devices sensors 4 Output devices power loads
33. sion it is necessary Press buttons FHU and simultaneously within some seconds after the switching on The test has the following sequence Switching on On off Ove Recip FHU Pyro V AN ae EO LE SG SKHT SKH4 SKH3 SKH4 SKH5 SKHE SKH SKHE SKH3 SKH10 HDCOD1131 JPG Fig 28 Activation of the test On olf Ovi Recip FHU Pyro 7 A g Os Ve 22 22 od SKHT1 SKH4 SKH3 SEHA SKHS SKHE SKH SEHB SKH3 SEH10 Iz JPG Fig 29 On olt Ovi Recip FHU Pyro V SE SER REN 2 SEHT SKH4 SKH3 SKH4 SKHS SKHE SEH SKHB SKHY SKH10 HDICO1133 JPG Fig 30 SOI 03 08 FV 33 51 599 37 14 84 Displaying of programme code and Sensor temperature 25 Kile a ich nol Ovi Recip FHU Pyro A ET Ate ra JE MES ES DU Se ES SKH1 SkH4 SKH3 SKHA SKH5 SKHE SKH7 SKHBN SKH9 skH10 HDCO1134 JPG Fig 31 Door closed not locked 00 On odl OM Recip FHU Pyro OU 2 E ME P 3 je E Us 3 E SkH1 SkH4 SKH3 SKH4 SKH5 SKHE SKH7 SKH8 SKH9 SkH10 HDCO1135 JPG Fig 32 Door open not locked 02 On off Ovi Rocio FHU Pyro LA A JR e Ee E SSS SKH1 SKH4 SKH3 SKH4 SKH5 SKHE SKH SKH SKH3 SKH10 HDCO1135 JP Fig 33 SOI 03 08 FV 34 51 599 37 14 84 End of test On off Ovi Recip FHU Pyro V AN a S D m eJ S A D 2 SKH1 ckH4 SKH3 SKH4 SKH5 SKHG SKH7 SKH8 SKH9 SKH10 HDCONST JFG Fig 34 SOI 03 08 FV 35 51 599 37 14 84 11 FUNCTIONAL DIAGRAMS 11 1 FUNCTIONAL DIAG
34. ts for the various types of appliance are shown in fig 41 400V 3N HDC00094 TIF Fig 41 SOI 03 08 FV 45 51 599 37 14 84 12 4 RELEASING THE DOOR LOCK MANUALLY If the door remains locked mechanically it must be released manually To do so proceed as follows 12 4 1 RELEASING THE DOOR LOCK MANUALLY ON ACCESS OVENS To release the door lock manually on Access ovens it is necessary to remove the hook screw through a hole on the venting grid 1 Insert a 3mm Philips cross head screwdriver through the hole and loosen the screw which secures the latch of the lock 2 Remove the screw which secures the latch in the way the latch can be raised to release the door see fig 44 3 Check that the door interlock functions correctly If not replace the interlock see chapter 11 5 Fig 44 1 3mm PHILIPS CROSS HEAD SCREWDRIVER 2 HOLE FOR ACCESS TO RELEASE SCREW When the door interlock is released for the first time it is necessary to perforate the thin plastic film which covers the hole next to the door interlock release screw see fig 43 SCREW HOLE 4 HDCODAE3 JP G Fig 45 SOI 03 08 FV 46 51 599 37 14 84 12 4 2 RELEASING THE DOOR LOCK MANUALLY ON ACCESS PLUS OVENS To release the door lock manually on Access Plus ovens it is necessary to remove the hook screw or to lift up the hook depending on the door interlock see 12 4 2 3 and 12 4 2 4 through a hole on the oven front panel 12 4 2

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