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SERVICE MANUAL COOKING

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1. 9 3 4 1 CONTACTS THAT ACTUATE THE DOOR LOCK 12 3 4 2 CONFIGURATION OF DOOR LOCK WHEN DOOR IS FREE p 13 3 4 3 CONFIGURATION OF DOOR LOCK WHEN DOOR 15 LOCKED p 14 3 5 MOTOR POWERED DOOR LOCK METEOR 15 3 5 1 DOOR LOCK CONTACTS p 17 3 5 2 CONTACT POSITIONS p 18 3 5 3 CONFIGURATION OF LOCK W DOOR OPEN p 19 3 5 4 CONFIGURATION OF LOCK W DOOR CLOSED UNLOCKED p 20 3 5 5 CONFIGURATION OF LOCK W DOOR LOCKED p 21 3 6 MOTOR POWERED DOOR LOCK ELTEK p 22 3 7 SELF CLEANING CYCLE p 23 3 7 1 SCHEMATIC DIAGRAM p 24 3 7 2 STEPS IN THE SELF CLEANING CYCLE p 26 3 7 2 1 Diagram of self cleaning cycle p 2 3 7 3 PROGRAMS WITH SELF CLEANING CYCLE p 28 3 7 3 1 Operating sequence Programme P1 p 29 3 7 3 2 Operating sequence Programme P2 p 30 3 7 4 FLOW CHART OF SELF CLEANIN
2. m DL1 012 DP1 2 HDCO0356 JPG Fig 32 501 05 08 19 53 599 36 07 64 3 5 4 POSITIONS OF DOOR LOCK WITH DOOR CLOSED AND UNLOCKED POSITIONS OF LATCH WITH DOOR CLOSED AND UNLOCKED Fig 33 1 DRIVE MOTOR SLIDE 3 LOCK LEVER 4 LATCH 5 DOOR DETECTION LEVER 6 DOOR SWITCH POSITION OF CONTACTS WITH DOOR CLOSED AND UNLOCKED Fig 34 501 05 08 M1 MT M2 m e lo DL1 012 DP1 DP2 HOCDOSS7 JG 20 53 599 36 07 64 3 5 5 POSITIONS OF DOOR LOCK WITH DOOR LOCKED POSITION OF LATCH WITH DOOR LOCKED Fig 35 1 DRIVE MOTOR SLIDE 3 LOCK LEVER 4 LATCH 5 DOOR DETECTION LEVER 6 DOOR SWITCH POSITION OF CONTACTS WITH DOOR LOCKED M1 MT M2 gp DL1 DL2 DP1 DP2 Fig 36 501 05 08 21 53 599 36 07 64 3 6 MOTOR POWERED DOOR LOCK ELTEK This type of door lock has the same functioning of the door lock METEOR explained in the chapter 3 5 It differs for the type of electric connection and the presence of a plastic cover on the functional structure HDC02666 JPG Fig 37 1 ELECTRIC CONTACT OF THE MOTOR 2 MOTOR 3 CONNECTOR 4 PLASTIC COVER 5 METALLIC HOOK OF DOOR LOCK HDC02667 JPG Fig 38 1 MOTOR 2 MICROINTERRUTTORE PRESENZA PORTA 3 CONNECTOR 4 DOOR PRESENCE CONTROL DEVICE
3. 5 DOORLOCK CONTROL DEVICE 6 DOORLOCK METALLIC HOOK 501 05 08 22 53 599 36 07 64 3 7 SELF CLEANING CYCLE To clean the oven with a self cleaning cycle one of the self cleaning programs must be selected Since the oven must be precisely controlled during the cleaning cycle the self cleaning process can only be executed using one of the programs provided The following must occur during cleaning programs employing pyrolysis The door must be locked during the entire process due to the high temperature in the oven A heating period must be provided to allow the oven to reach the temperature necessary for self cleaning The self cleaning temperature must be maintained A cooling period must be provided to allow the oven to reach a temperature that is low enough to open the door safely Referring to the schematic diagram below we now offer a description of what occurs during the self cleaning cycle Beginning with the oven at room temperature when one of the self cleaning programs is selected relay SPO06 on the power board closes The oven lamp is off if the oven door is closed as detected by microswitch SW4 which is connected to the power board through input connector 01 When the self cleaning cycle is confirmed by pressing the button the control unit actuates relays SP35 and SP30 on the power board These relays power the upper and lower heating elements respectively SP35 and 5601 on models w
4. HDC00351 JPG Fig 47 DISPLAY L2 LEVEL 3 CONTROL UNIT SAFETY MANIN RELAY KRONOS CONTROL RELAY FOR CONVECTION DL DOOR LOCK UNIT HEATING ELEMENT GRILL GRILL RELAY PCB CONTROL RELAY FOR LOWER HEATING OVEN LAMP ELEMENT LOW VOLTAGE TRANSFORMER CONTROL RELAY FOR UPPER HEATING CONVECTION FAN ELEMENT TANGENTIAL COOLING FAN MICROSWITCH DOOR CLOSED NEUTRAL MAINS NEUTRAL PHASE SAFETY THERMOSTAT FOR POWER PHASE MAINS POWER PHASE LOADS OVEN SENSOR CONTROL THERMOSTAT FOR DOOR LOCK UPPER HEATING ELEMENT TOP SYSTEM LOWER HEATING ELEMENT BOTTOM THERMOSTAT FOR FAN SPEED CONTROL CONVECTION HEATING ELEMENT OVERLOAD PREVENTION THERMOSTAT CIRCULAR TRIAC FOR OVEN LAMP GRILL HEATING ELEMENT TRIAC FOR COOLING FAN VOLTAGE DROPPING RESISTOR FOR TRIAC FOR HOT AIR FAN DOUBLE SPEED FAN TRIAC FOR DOOR LOCK RL1 DAMPING RESISTOR FOR OVEN LAMP SOEC POWER BOARD 05 08 40 53 599 36 07 64 4 1 8 OPERATIONAL DESCRIPTION OF LEVEL 3 KRONOS WITH BIMETAL DOOR LOCK SOEC BOARD Mains power is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the level 3 programmer in Service Manual Kronos the relative relays and triacs on the power board are sw
5. HOT AIR FAN COOLING FAN MAINS NEUTRAL PHASE MAINS POWER PHASE OVEN SENSOR UPPER HEATING ELEMENT TOP LOWER HEATING ELEMENT BOTTOM CONVECTION HEATING ELEMENT REAR HEATING ELEMENT FOR GRILL VOLTAGE DROPPING RESISTOR FOR FAN DOUBLE SPEED DAMPING RESISTOR FOR OVEN LAMP POWER BOARD GENERAL SAFETY RELAY 8 Rd ERR SWA HDCONH381 JPCG CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR BOTTOM HEATING ELEMENT CONTROL RELAY FOR TOP HEATING ELEMENT MICROSWITCH DOOR CLOSED MICROSWITCH ON DOOR LATCH SAFETY THERMOSTAT ON MAIN POWER CIRCUIT CONTROL THERMOSTAT FOR DOOR LOCK SYSTEM THERMOSTAT FOR FAN SPEED CONTROL OVERLOAD PREVENTION THERMOSTAT TRIAC FOR OVEN LAMP TRIAC FOR COOLING FAN TRIAC FOR HOT AIR FAN TRIAC FOR DOOR LOCK 999 36 07 64 3 6 2 STEPSIN THE SELF CLEANING CYCLE Here is a summary of the events that occur as sensor temperature varies SENSOR ACTION TEMPERATURE 120 Fan turns on low speed 305 TP54 locks the door Self cleaning Program P1 1 hour Program P2 1 hour and 30 501 05 08 26 53 599 36 07 64 3 7 2 1 DIAGRAM OF SELF CLEANING CYCLE The following diagram shows the sequence of events in the self cleaning cycle HDC00352 JPG 600 500 3 30 300 C f LLI n 200 C 115 C tr 100
6. RL RL1 SOEC POB 5 06 501 05 08 5 52 25 SP35 a TP53 52 4 TP51 CEU AC 500 qi KRONOS LEVEL 3 CONTROL UNIT DOOR LOCK ASSEMBLY GRILL RELAY BOARD OVEN LAMP LOW VOLTAGE TRANSFORMER HOT AIR FAN COOLING FAN MAINS NEUTRAL PHASE MAINS POWER PHASE OVEN SENSOR UPPER HEATING ELEMENT TOP LOWER HEATING ELEMENT BOTTOM CONVECTION HEATING ELEMENT REAR HEATING ELEMENT FOR GRILL VOLTAGE DROPPING RESISTOR FOR DOUBLE SPEED FAN DAMPING RESISTOR FOR OVEN LAMP POWER BOARD GENERAL SAFETY RELAY SP30 GRILL PCB PHASE ic E NEUTRAL SP20 06 24 53 E SOEC i HDCOQ354 CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR BOTTOM HEATING ELEMENT CONTROL RELAY FOR TOP HEATING ELEMENT MICROSWITCH ON DOOR SAFETY THERMOSTAT ON MAIN POWER CIRCUIT CONTROL THERMOSTAT FOR DOOR LOCK SYSTEM THERMOSTAT FOR FAN SPEED CONTROL OVERLOAD PREVENTION THERMOSTAT TRIAC FOR OVEN LAMP TRIAC FOR COOLING FAN TRIAC FOR HOT AIR FAN TRIAC FOR DOOR LOCK 599 36 07 64 VERSION WITH MOTOR POWERED DOOR LOCK SYSTEM KRONOS DISPLAY L3 Fig 40 DISPLAY L3 DL GRILL PCB NEUTRAL PHASE PT500 R1 R2 SOEC POB 5 06 501 05 08 5 LEVEL 3 CONTROL UNIT DOOR LOCK ASSEMBLY GRILL RELAY BOARD OVEN LAMP LOW VOLTAGE TRANSFORMER
7. DOOR LOCK OVC1000 BOARD p 42 4 1 10 OPER DESCRIPTION OF LEVEL 2 KRONOS SELF CLEANING OVEN WITH MOTOR POWERED DOOR LOCK OVC1000 BOARD p 43 4 2 APPLICATION ON MODELS WITHOUT DISPLAY p 44 4 2 1 SCHEMATIC DIAGRAM APPLICATION ON MODELS W O DISPLAY WITH BIMETAL DOOR LOCK p 44 4 2 2 OPER DESCRIPTION OF SELF CLEANING MODELS W O DISPLAY p 45 4 3 APPLICATION ON p 46 4 3 1 SCHEMATIC DIAGRAM APPLICATION ON RHEA WITH BIMETAL DOOR LOCK SOEC p 46 4 3 2 OPERATIONAL DESCRIPTION OF RHEA SELF CLEANING OVEN WITH BIMETAL DOOR LOCK SOEC BOARD p 47 501 05 08 3 53 599 36 07 64 4 3 3 SCHEMATIC DIAGRAM APPLICATION ON RHEA WITH MOTOR POWERED DOOR LOCK SOEC BOARD p 4 3 4 OPERATIONAL DESCRIPTION OF RHEA SELF CLEANING OVEN WITH MOTOR POWERED DOOR LOCK SOEC BOARD 5 ERROR 600584 5 1 ERROR CODES MODELS WITH POWER BOARD SOEC 5 2 ERROR CODES ON MODELS WITH POWER BOARD OVC1000 6 SERVICE MANUALS FOR SELF CLEANING OVENS 7 REVISIONS 501 05 08 4 53 49 50 50 51 52 53 399 36
8. PHASE MAINS POWER PHASE ROTARY FUNCTION SWITCH PT500 OVEN SENSOR SAFETY THERMOSTAT FOR POWER R1 UPPER HEATING ELEMENT TOP LOADS R2 LOWER HEATING ELEMENT DOOR LOCK THERMOSTAT BOTTOM THERMOSTAT FOR FAN SPEED R3 GRILL HEATING ELEMENT VARIATION RL VOLTAGE DROPPING RESISTOR TRIAC FOR OVEN LAMP FOR DOUBLE SPEED FAN TRIAC FOR COOLING TANGENTIAL RL1 DAMPING RESISTOR FOR OVEN FAN LAMP TRIAC FOR HOT AIR FAN SOEC POWER BOARD TRIAC FOR DOOR LOCK SOI 05 06 46 53 999 36 07 64 4 3 2 OPERATIONAL DESCRIPTION OF RHEA SELF CLEANING OVEN WITH BIMETAL DOOR LOCK SOEC BOARD Mains power for the system is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the programmer in the RHEA Service Manual General Information the relative relays and triacs on the power board are switched on Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TP54 is also connected to
9. cleaning cycle Also since temperatures in the muffle reach 500 C the oven 15 properly insulated and the door is specially designed to keep the outside of the oven cool enough to protect Surrounding cabinetry during cleaning In short a self cleaning oven has A system that locks the door which is controlled by a timer and a thermostat Improved insulation to keep the outside of the oven at an acceptably low temperature despite the higher temperature inside the oven A fan with a higher flow rate for better cooling An oven door equipped with a greater number of windows to improve heat dispersion given the higher internal temperature Fig 1 NEW TWO SPEED FAN 2 SYSTEM THAT LOCKS DOOR DURING SELF CLEANING 3 NEW DOOR WITH MORE WINDOWS 4 IMPROVED INSULATION AROUND MUFFLE HDCO00332 JPG 501 05 08 6 53 599 36 07 64 3 2 DIAGRAM FUNCTIONS 3 2 1 DIAGRAM OF FUNCTIONS MODELS WITHOUT DISPLAY CONTROL DEVICES ROTARY SWITCHES POWER BOARD SENSORS LOADS oven sensor gt heating meat sensor elements fans etc Fig 2 DOOR LOCK 3 2 2 DIAGRAM OF FUNCTIONS MODELS WITH DISPLAY etc CONTROL UNITS DISPLAY BUZZER POWER BOARD SENSORS LOADS oven sensor gt heating meat sensor elements fans etc DOOR Fig 3 LOCK 501 05 08 53 599 36 07 64 etc 3 3 VENTILATION Since a self cleaning oven reaches higher temperatu
10. for self cleaning ovens with SOEC power board ERROR CODE CAUSE OF ERROR Safety temperature 525 C exceeded Short circuit on oven sensor Safety temperature 325 exceeded Open circuit on temperature sensor 80 Temperature has failed to rise Here is an example of how the error codes are shown on the various applications Example of error code 65 on Kronos with level 1 control unit Fig 52 HD001904 TIF Example of error code 65 on Kronos with level 2 control unit HD001905 TIF Example of error code 65 on Kronos with level 3 control unit Fig 54 HD001906 TIF Example of error code 65 on RHEA Fig 55 00415 5 NOTE Malfunctions signalled with error codes on models with a display are indicated by a flashing Pilot light LED models without a display 05 06 50 53 599 36 07 64 5 2 ERROR CODES MODELS WITH POWER BOARD SOEC Standard error codes are used on models with a display opecific error codes for the self cleaning function are included on models with a self cleaning oven Here is a table listing the error codes for self cleaning ovens with SOEC power board ERROR CODE for more than 5 seconds Safety temperature exceeded 1 gt 350 on normal ovens gt 530 on pyrolytic ovens for more than 10 seconds
11. signals the power board that the door is closed If oven temperature exceeds 120 TP52 starts cooling fan M2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 C Thermostat TH3 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay The system also generates an error code identifying the fault that has occurred see the chapter entitled Error codes SOI 05 06 37 53 599 36 07 64 4 1 5 DOOR LOCK OVC1000 BOARD 1 9 6 6 DL1 KRONOS DISPLAY L2 o oo o ooo odo Fig 46 DISPLAY L2 KRONOS LEVEL 2 CONTROL UNIT DOOR LOCK ASSEMBLY MAINS EARTH OVEN LAMP CONVECTION FAN COOLING TANGENTIAL FAN MAINS NEUTRAL PHASE MAINS POWER PHASE OVEN SENSOR PT500 GRILL HEATING ELEMENT LOWER HEATING ELEMENT BOTTOM HEATING ELEMENT TOP CONVECTION HEATING ELEMENT CIRCULAR POWER BOARD SAFETY MAIN RELAY CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR UPPER HEAT
12. 07 64 1 INTRODUCTION 1 1 PURPOSE OF THIS MANUAL This manual contains a general introduction to the oven cleaning system called pyrolysis This new self cleaning system includes hardware and software that differs depending on the model involved For example on the KRONOS oven on the SOEC 0 oven on the RHEA oven on free standing models etc The manual contain theoretical and general information Information on specific functions and characteristics will be contained in specific manuals that will be released soon 2 PYROLYSIS Pyrolysis is the process that is used in self cleaning ovens Self cleaning is made possible by special enamelling inside the muffle combined with temperatures that reach approx 500 which pulverizes the deposits of fat and sugars that normally soil the walls of ovens 2 1 SAFETY IN THE SELF CLEANING MODE During the self cleaning process the oven door is locked mechanically to prevent it being opened with the oven at 500 which would cause the fats to catch fire due to the presence of oxygen During the process it is normal for small brief flames to erupt inside the muffle These flames die out immediately due to the lack of oxygen 501 05 08 5 53 599 36 07 64 3 THE SELF CLEANING OVEN 3 1 DIFFERENCES AS COMPARED WITH A NORMAL OVEN An oven equipped with a self cleaning feature is different from a normal oven in that it has a door lock system that is activated during the
13. 4 Electrolux Distriparts SERVICE MANUAL COOKING ELECTROLUX ZANUSSI S p A Corso Lino Zanussi 30 33080 PORCIA PN ITALY Tel 39 0434 394850 Fax 39 0434 394096 50 Edition 05 2008 Rev 01 501 05 08 HD002187 TIF THIS DOCUMENT UPDATES AND REPLACES THE PREVIOUS HAVING SAME NUMBER Built in ovens and Cookers Publication GENERAL MANUAL FOR number SELF CLEANING OVENS IT SERVICE FV 1 53 599 36 07 64 501 05 08 2 53 599 36 07 64 TABLE OF CONTENTS 1 INTRODUCTION 5 1 1 PURPOSE OF THIS MANUAL p 2 amp 5 2 1 SAFETY IN THE SELF CLEANING MODE p THE SELF CLEANING OVEN p 6 3 1 DIFFERENCES AS COMPARED WITH A NORMAL OVEN p 6 3 2 DIAGRAM OF FUNCTIONS p 3 2 1 DIAGRAM OF FUNCTIONS MODELS WITHOUT DISPLAY p 7 3 2 2 DIAGRAM OF FUNCTIONS MODELS WITH DISPLAY p 7 3 3 9 3 4 BIMETALLIC DOOR LOCK
14. BIMETAL DOOR LOCK SOEC BOARD Mains power is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the level 1 programmer in Service Manual Kronos the relative relays and triacs on the power board are switched on Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TP54 is also connected to the power board Thermostat TH2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SWA signals the power board that the door is closed If oven temperature exceeds 120 TP52 starts cooling fan M2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 Thermostat TH3 and resistor RL form a circuit that generates two spe
15. C LLI 06 TIME FN1LD1 FN2 TLD1 T1 T2 TLD2 FN3 LD2 4 lt gt OPENING OF DOOR gt DISABLED lt FAN OPERATION AT HIGH SPEED i DOOR LOCKED OPERATION Meme Fig 41 KEY FAN TURNS ON AT LOW SPEED FAN SWITCHES TO HIGH SPEED FNB 0 FAN SWITCHES BACK TO LOW SPEED FAN OPERATING AT LOW SPEED SHUTS OFF DOORLOCKED 7 0 UNLOCKED DOOR TLD1 THERMOSTAT ON DOOR LOCK SYSTEM OPENS OPENING DISABLED OPENING TLD2 THERMOSTAT ON DOOR LOCK SYSTEM CLOSES OPENING OF DOOR ENABLED DISABLED Ti SELF CLEANING BEGINS SELF CLEANING ENDS CLEANING 501 05 08 27 53 599 36 07 64 3 7 3 PROGRAMS WITH SELF CLEANING CYCLE PROGRAM P1 600 C HDC00349 JPG 500 C 300 C 200 C SENSOR TEMPERATURE 0 TIME 30 4 1 Hr T2 30 Fig 42 PREHEATING CLEANING AT 480 C COOLING PROGRAM P2 600 C HDC00350 JPG A 500 AJ DAA v VVVYV 400 C 100 C SENSOR TEMPERATURE N 9 0 TIME 30 T4 1 Hr 30 12 30 Fig 43 PREHEATING CLEANING AT 480 C COOLING SOI 05 08 FV 28 53 599 36 07 64 3 7 3 1 OPERATING SEQUENCE PROGRAM P1 7 PHASE 8 PHASE 9 PHASE 0
16. CIFIC MANUALS FOR MODELS WITHOUT DISPLAY SOI 05 06 52 53 599 36 07 64 7 REVISIONS REVISION DATE 05 2008 Added Chapter 3 6 MOTOR POWERED DOOR LOCK ELTEK page 22 Added new diagrams to chapter 4 VARIOUS APPLICATION pages 38 42 and 48 Modified chapter 5 ERROR CODES pages 50 and 51 SOI 05 06 53 53 599 36 07 64
17. Communication interrupted between control unit and power board Software compatibility between control unit and power board Triac faulty on power board Here is an example of how the error codes shown on the various applications Example of error code F05 on Kronos with level 1 control unit FOS Example of error code F05 on Kronos with level 2 control unit JPG 05 Ho Fig 57 m Example of error code 5 on Kronos with level 3 control unit Fig 58 HDCO01139 JPG Example of error code F05 on RHEA 05 Fig 6 59 10 0285 JPG NOTE Malfunctions signalled with error codes on models with a display are indicated by a flashing Pilot light LED on models without a display 05 06 51 53 599 36 07 64 6 SERVICE MANUALS FOR SELF CLEANING OVENS The self cleaning feature is used on various types of ovens As is true for KRONOS ACCESS Service Manuals general information on all models is included in a general service manual which is then supplemented with information contained in dedicated Service Manuals for specific groups of appliances Only the manuals that deal with the type of appliance being serviced should be used The following diagram illustrates how the Service Manuals are organized GENERAL SELF CLEANING MANUAL SPECIFIC KRONOS MANUALS SPECIFIC MANUALS SPE
18. E TEMPERATURE COOLING TANGENTIAL FAN DOOR LOCK HOOK MICROSWITCH MAINS NEUTRAL PHASE MICROSWITCH DOOR CLOSED MAINS POWER PHASE ROTARY FUNCTION SELECTOR OVEN SENSOR MAIN SAFETY THERMOSTAT GRILL HEATING ELEMENT DOOR LOCK THERMOSTAT LOWER HEATING ELEMENT TRIAC OVEN LAMP BOTTOM TRIAC CONVECTION FAN UPPER HEATING ELEMENT TOP TRIAC COOLING TANGENTIAL FAN CONTROL UNIT TRIAC HIGH SPEED FAN POWER BOARD OVC1000 TRIAC DOOR LOCK SAFETY MAIN RELAY LOW VOLTAGE TRANSFORMER RELAY NOT USED CONTROL RELAY FOR UPPER HEATING ELEMENT CONTROL RELAY FOR GRILL HEATING ELEMENT CONTROL RELAY FOR LOWER HEATING ELEMENT 48 53 599 36 07 64 4 3 4 OPERATIONAL DESCRIPTION OF SELF CLEANING OVEN WITH MOTOR POWERED DOOR LOCK OVC1000 BOARD Mains power for the system is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the programmer in the RHEA OVC1000 Service Manual General Information the relative relays and triacs on the power board are switched on Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temper
19. ED POSITION OF LATCH WHEN DOOR IS LOCKED DB3A SGAA 12 28 HDC00265 JPG Fig 17 1 DOOR LATCH CLOSED DOOR LOCKED 2 MICROSWITCH BUTTON 3 MICROSWITCH IN OPEN POSITION POSITION OF CONTACTS WHEN DOOR IS LOCKED HDCO00270 JPG Fig 18 CLOSE UP OF CONTACTS WHEN DOOR IS LOCKED Fig 19 A CONTROL BAR 501 05 08 14 53 599 36 07 64 3 5 MOTOR POWERED DOOR LOCK METEOR This system also operates during the self cleaning cycle whether mains power is being fed to the appliance or not In this system the door latch is moved by a small electric motor The door is locked when the temperature at the centre of the oven reaches 325 C and is released when the temperature reaches 300 C as detected by thermostat TH2 see diagram Fig 40 p 25 The thermostat is located on the support for the grill element at the top of the oven see Fig 23 Fig 20 DOOR LOCK ON OVENS HDC00411 JPG 1 DOOR LATCH LATCH RETAINER 3 DOOR 4 DOOR HANDLE Fig 22 501 05 08 DOOR LOCK ON COOKERS HOCOMA2 IPG Fig 21 1 DOOR LATCH 2 LATCH RETAINER 3 DOOR 4 DOOR HANDLE Fig 23 1 GRILL ELEMENT 2 MOUNTING SCREWS FOR GRILL ELEMENT AND THERMOSTAT THERMOSTAT FOR SELF CLEANING FUNCTION 15 53 599 36 07 64 MOTOR POWERED DOOR LOCK Fig 24 MOTOR DOOR LATCH DOOR SENSOR BODY MANUAL RELEASE SCREW MANUAL RELEASE LEVER PIN SLIDE DO
20. G CYCLE p 31 3 7 5 DOOR LOCK UNLOCK SIGNALS p 33 4 APPLICATIONS OF SELF CLEANING FEATURE p 34 4 1 APPLICATION ON KRONOS p 34 4 1 1 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 1 WITH BIMETAL DOOR LOCK SOEC BOARD p 34 4 1 2 OPER DESCRIPTION OF LEVEL 1 KRONOS SELF CLEANING OVEN WITH BIMETAL DOOR LOCK SOEC BOARD p 35 4 1 3 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 2 WITH BIMETAL DOOR LOCK SOEC BOARD p 36 4 1 4 OPER DESCRIPTION OF LEVEL 2 KRONOS SELF CLEANING OVEN WITH BIMETAL DOOR LOCK SOEC BOARD p 37 4 1 5 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 2 WITH MOTOR POWERED DOOR LOCK OVC1000 BOARD p 38 4 1 6 OPER DESCRIPTION OF LEVEL 2 KRONOS SELF CLEANING OVEN WITH MOTOR POWERED DOOR LOCK OVC1000 BOARD p 39 4 1 7 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 3 WITH BIMETAL DOOR LOCK SOEC BOARD p 40 4 1 8 OPER DESCRIPTION OF LEVEL 3 KRONOS SELF CLEANING OVEN WITH BIMETAL DOOR LOCK SOEC BOARD p 41 4 1 9 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 3 WITH MOTOR POWERED
21. ING ELEMENT OVC1000 REL2 05 06 38 53 SCHEMATIC DIAGRAM OF APPLICATION KRONOS LEVEL 2 WITH MOTOR POWERED 8 01051 4 5 CONTROL RELAY FOR GRILL HEATING ELEMENT CONTROL RELAY FOR BOTTOM HEATING ELEMENT DROP RESISTOR FOR FAN DOUBLE SPEED DOOR LOCK HOOK MICROSWITCH DOOR CLOSED MICROSWITCH SAFETY THERMOSTAT DOOR LOCK THERMOSTAT TRIAC FOR LAMP OVEN TRIAC FOR CONVECTION FAN CONTROL TRIAC FOR COOLING TANGENTIAL FAN CONTROL TRIAC FOR COOLING TANGENTIAL FAN SECOND SPEED TRIAC FOR DOOR LOCK LOW VOLTAGE TRANSFORMER 599 36 07 64 4 1 6 OPERATIONAL DESCRIPTION OF LEVEL 2 KRONOS WITH MOTOR POWERED DOOR LOCK OVC 1000 BOARD Mains power is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the level 2 programmer in Service Manual Kronos OVC1000 the relative relays and triacs on the power board are switched on If the grill is used relay 5601 on the grill control board is also actuated Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the t
22. K ON OVENS DOOR LOCK ON COOKERS W E 3 HDC00411 JPG HOCOMA2 IPG Fig 6 Fig 7 1 DOOR LATCH 1 DOOR LATCH 2 LATCH RETAINER 2 LATCH RETAINER 3 DOOR 3 DOOR 4 DOOR HANDLE 4 DOOR HANDLE HOCO027 1 JPG Fig 8 HDC00413 JPG Fig 9 1 GRILL ELEMENT 2 MOUNTING SCREWS FOR GRILL ELEMENT AND THERMOSTAT 3 THERMOSTAT FOR SELF CLEANING FUNCTION 501 05 08 9 53 599 36 07 64 BIMETALLIC DOOR LOCK HDCO0353 JPG Fig 10 DOORLOCK DOOR LATCH DOOR SWITCH INSULATION LEAF CONNECTING WIRES FOR SWITCH CONTACTS FOR DOOR LOCK SYSTEM 501 05 08 10 53 599 36 07 64 When 230VAC is applied to contacts 3 and 4 bar moves in the opposite direction after 2 10 seconds and locks the door latch into position In this condition the door cannot be opened Also when bar A moves internal contact B opens to allow the door latch to move see Fig 13 p 12 and Fig 16 p 13 and contacts 33 34 on the internal switch close When these contacts close an electronic circuit interrupts the door lock command signal When bar A moves it also closes internal contact C To unlock the door 230VAC is applied to contacts 2 and 3 which retracts bar A and releases the door latch The door can be unlatched only when the contacts on thermostat TH2 are closed Also a microswitch that detects the position of the door is installed
23. MOTOR GRILL HEATING ELEMENT TRIAC FOR OVEN LAMP VOLTAGE DROPPING RESISTOR TRIAC FOR COOLING FAN FOR DOUBLE SPEED FAN TRIAC FOR HOT AIR FAN DAMPING RESISTOR FOR OVEN TRIAC FOR DOOR LOCK LAMP POWER BOARD 5 06 GENERAL SAFETY RELAY SP20 CONTROL RELAY FOR GRILL HEATING ELEMENT 05 06 44 53 599 36 07 64 4 2 2 OPERATIONAL DESCRIPTION OF SELF CLEANING OVEN MODELS WITHOUT DISPLAY WITH BIMETAL DOOR LOCK Mains power for the system is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the programmer in the Service Manual for these models the relative relays and triacs on the power board are switched on Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TP54 is also connected to the power board Thermostat TH2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SWA signals the
24. NO YES YES ALARM MODE 20 ERROR NO OVEN SENSOR TEMP gt 330 C DOOR SWITCH CLOSED NO YES YES ALARM MODE 40 ERROR 465 C REACHED NO YES BEEP AND START CLEANING ALARM MODE LESS THEN 500 C REACHED OVERHEAT 20 ERROR NO YES CLEANING NO gt 3 HOURS NO YES YES ALARM MODE 10 ERROR HEATING ELEMENTS OFF SOI 05 06 32 53 999 36 07 64 2320 DOOR LOCK OPEN DOOR LOCK OPEN DOOR LOCK OVEN KEY SYMBOL COOL DOWN NO STAYS ON 3 7 4 DOOR LOCK UNLOCK SIGNALS The door lock signal is given from terminal 1 of connector BP21 on the power board bimetallic door lock is used this signal actuates the bimetallic device If a motor powered door lock is used this signal actuates the motor The diagrams below graphically show how these signals are given CLOSE SIGNAL Change from door unlocked to door locked intervals of 1 minute of close signal followed by 4 minutes of pause for a maximum time of 10 minutes 1 minute 4 minutes gt 10 minutes _ I OPEN SIGNAL Change from door locked to door unlocked intervals of 1 minute of open signal followed by 4 minutes of pause until the system detects that the door is unlocked 1 minute 4 minutes gt continuous SOI 05 06 33 53 599 36 07 64 4 APPLICATIONS SELF CLEANING FEATURE The feature
25. NT BOTTOM 52 TRIAC FOR COOLING FAN HEATING ELEMENT FOR GRILL TP53 TRIAC FOR HOT AIR FAN GRILL RESISTOR TP54 TRIAC FOR DOOR LOCK VOLTAGE DROPPING RESISTOR FOR DOUBLE SPEED FAN DAMPING RESISTOR FOR OVEN LAMP POWER BOARD GENERAL SAFETY RELAY SOI 05 06 36 53 599 36 07 64 4 1 4 OPERATIONAL DESCRIPTION OF LEVEL 2 KRONOS SELF CLEANING WITH BIMETAL DOOR LOCK SOEC BOARD Mains power is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TH1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the level 2 programmer in Service Manual Kronos the relative relays and triacs on the power board are switched on If the grill is used relay 301 on the grill control board is also actuated Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TP54 is also connected to the power board Thermostat TH2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SWA
26. OFF LL WORDING 86 gl SYMBOL TEMPERATURE com c om oom o m TERMOSTAT TH3 FAN OVEN LAMP HEATING ELEMENTS INVOLVED IN s 22 SK CLEANING alternated with 2450 W LOCKED LOCKED LOCKED LOCKED LOCKED FREE THERMOSTAT 06 04 29 43 599 36 07 64 3 7 3 2 OPERATING SEQUENCE PROGRAM P2 7 8 PHASE 9 65 01 1 hr 30 WORDING Lodo e o E Ru SYMBOL TEMPERATURE RE LR RNC TH3 FAN OVENLAMP OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF HEATING 2450 W ELEMENTS SELF CLEANING alternated CYCLE With 2450 W EN FREE LOCKED LOCKED LOCKED LOCKED LOCKED THERMOSTAT 06 04 30 43 599 36 07 64 3 7 4 FLOW CHART OF SELF CLEANING CYCLE STAND BY MODE DOOR SWITCH OPEN NO OVEN LAMP 2 YES YES CLEANING CYCLE STARTS ALARM MODE 80 ERROR COMPONENT THERMAL OVERHEAT CUT OUT 305 COOLING FAN HIGH SPEED SOI 05 06 31 53 599 36 07 64 325 DOOR LOCK CLOSED OVEN SENSOR TEMP gt 340
27. OR SWITCH 10 MICROSWITCH FOR SENSING POSITION OF LATCH 11 SPRINGS Fig 25 501 05 08 16 53 HDC00347 JPG Eb LOCKED POSITION DOOR CLOSED 9 UNLOCKED POSITION DOOR CLOSED 9 UNLOCKED POSITION DOOR OPEN HDC00348 JPG 599 36 07 64 3 5 1 DOOR LOCK CONTACTS The electrical contacts that activate the motor powered door lock are shown below Fig 26 1 MOTOR CONTACTS M1 AND M2 2 GROUND CONTACT 3 DOOR SWITCH CONTACTS DP1 AND DP2 Fig 27 1 CONTACTS ON MICROSWITCH THAT SENSES LATCH POSITION DL1 AND DL2 501 05 08 17 53 599 36 07 64 3 5 2 CONTACT POSITIONS DOOR OPEN AND UNLOCKED M1 MT M2 am a GB GA UB GB GE GA DL1 DL2 DP1 DP2 Fig 28 DOOR CLOSED AND UNLOCKED M1 MT M2 m i 1 i a E F amp 1 1 DL1 DL2 DP1 DP2 HOCO0357 JPG Fig 29 DOOR CLOSED AND LOCKED M1 MT 2 DL1 DL2 DP1 DP2 HDCO00354 JPG Fig 30 501 05 08 18 53 999 36 07 64 3 5 3 POSITIONS OF DOOR LOCK WITH DOOR OPEN POSITION OF LATCH WITH DOOR OPEN Fig 31 1 DRIVE MOTOR SLIDE 3 LOCK LEVER 4 LATCH 5 DOOR DETECTION LEVER 6 DOOR SWITCH POSITION OF CONTACTS WITH DOOR OPEN
28. OS WITH MOTOR POWERED DOOR LOCK OVC1000 BOARD Mains power is fed to the power board which supplies the control unit with low voltage The oven circuit is protected by safety thermostat TC1 which interrupts the power in case of overheating caused by a malfunction in the electronics When baking operation is selected see the chapter entitled Using the level 3 programmer in Service Manual Kronos OVC1000 the relative relays and triacs on the power board are switched on If the grill is used relay 5601 on the grill control board is also actuated Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TO5 is also connected to the power board Thermostat TC2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SW2 signals the power board that the door is closed If oven temperature exceeds 120 starts cooling fan MG2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the
29. ature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac 5 is also connected to the power board Thermostat TH2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SW2 signals the power board that the door is closed If oven temperature exceeds 120 C starts cooling fan M2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 C Triac TO4 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay REL 1 The system also generates an error code identifying the fault that has occurred see the chapter entitled Error codes SOI 05 06 49 53 599 36 07 64 5 ERROR CODES 5 1 ERROR CODES ON MODELS WITH POWER BOARD SOEC Standard error codes are used on models with a display opecific error codes for the self cleaning function are included on models with a self cleaning oven Here is a table listing the error codes
30. centre of the oven falls below 110 C Thermostat 4 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay REL 1 The system also generates an error code identifying the fault that has occurred see the chapter entitled Error codes SOI 05 06 43 53 599 36 07 64 4 2 APPLICATION MODELS WITHOUT DISPLAY 4 2 1 SCHEMATIC DIAGRAM OF APPLICATION ON MODELS WITHOUT DISPLAY WITH BIMETAL DOOR LOCK 4 PHASE NEUTRAL sig 73 Ci A DL SP30 SP20 Ld 1 20528 5 TEMPERATURE LED CONTROL RELAY FOR BOTTOM SWITCH ON LED HEATING ELEMENT DOOR LOCK ASSEMBLY CONTROL RELAY FOR TOP HEATING OVEN LAMP ELEMENT LOW VOLTAGE TRANSFORMER TIMER CONTACT TURNSPIT MOTOR MICROSWITCH DOOR CLOSED HOT AIR FAN ROTARY FUNCTION SWITCH TANGENTIAL COOLING FAN SAFETY THERMOSTAT FOR POWER NEUTRAL MAINS NEUTRAL PHASE LOADS PHASE MAINS POWER PHASE DOOR LOCK THERMOSTAT TEMPERATURE TIME REGULATION THERMOSTAT FOR FAN SPEED OVEN SENSOR VARIATION UPPER HEATING ELEMENT TOP OVERLOAD PROTECTION LOWER HEATING ELEMENT THERMOSTAT BOTTOM TIMER
31. described above is available on appliances with different electronic control systems KRONOS Versions without display and with rotary controls RHEA 4 1 APPLICATION ON KRONOS 4 1 1 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 1 WITH BIMETAL DOOR LOCK SOEC BOARD KRONOS DISPLAY L1 PHASE NEUTRAL JPG Tull Fig 44 DISPLAY L1 LEVEL 1 CONTROL UNIT SP20 CONTROL RELAY FOR GRILL ELEMENT KRONOS LEVEL 3 SP30 CONTROL RELAY FOR BOTTOM DOOR LOCK UNIT HEATING ELEMENT OVEN LAMP SP35 CONTROL RELAY FOR TOP HEATING LOW VOLTAGE TRANSFORMER ELEMENT ROTISSERIE MOTOR SWF ROTARY FUNCTION SWITCH HOT AIR FAN TH1 SAFETY THERMOSTAT TANGENTIAL COOLING FAN TH2 CONTROL THERMOSTAT FOR DOOR MAINS NEUTRAL PHASE LOCK SYSTEM MAINS POWER PHASE THERMOSTAT FOR FAN SPEED OVEN SENSOR CONTROL UPPER HEATING ELEMENT TOP TH4 OVERLOAD PREVENTION THERMOSTAT LOWER HEATING ELEMENT BOTTOM TP51 TRIAC FOR OVEN LAMP HEATING ELEMENT FOR GRILL TP52 TRIAC FOR COOLING FAN VOLTAGE DROPPING RESISTOR FOR TP53 TRIAC FOR HOT AIR FAN DOUBLE SPEED FAN 54 TRIAC FOR DOOR LOCK DAMPING RESISTOR FOR OVEN LAMP SW4 MICROSWITCH POWER BOARD DOOR CLOSED 5 06 GENERAL SAFETY RELAY SOI 05 08 34 53 599 36 07 64 4 1 2 OPERATIONAL DESCRIPTION OF LEVEL 1 KRONOS SELF CLEANING OVEN WITH
32. eds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay The system also generates an error code identifying the fault that has occurred see the chapter entitled Error codes SOI 05 06 35 53 599 36 07 64 4 1 3 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 2 WITH BIMETAL DOOR LOCK SOEC BOARD 18 80 8888 208882 GRILL PCB KRONOS DISPLAY L2 Grill P air RL1 ET aa ba D lt E La SP35 SP30 SP20 LPO1 5 6 57 275 Ri 8501 HDC00406 JPG Fig 45 DISPLAY 2 LEVEL 2 CONTROL UNIT SP20 CONTROL RELAY FOR GRILL ELEMENT KRONOS SP30 CONTROL RELAY FOR BOTTOM DL DOOR LOCK UNIT HEATING ELEMENT GRILL GRILL RELAY PCB SP35 CONTROL RELAY FOR TOP HEATING OVEN LAMP ELEMENT LOW VOLTAGE TRANSFORMER SW4 MICROSWITCH DOOR CLOSED ROTISSERIE MOTOR 1 SAFETY THERMOSTAT HOT AIR FAN CONTROL THERMOSTAT FOR DOOR TANGENTIAL COOLING FAN LOCK SYSTEM MAINS NEUTRAL PHASE TH3 THERMOSTAT FOR FAN SPEED MAINS POWER PHASE CONTROL OVEN SENSOR OVERLOAD PREVENTION THERMOSTAT UPPER HEATING ELEMENT TOP TP51 TRIAC FOR OVEN LAMP LOWER HEATING ELEME
33. emperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TO5 is also connected to the power board Thermostat TC2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SW2 signals the power board that the door is closed If oven temperature exceeds 120 starts cooling fan MG2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 Triac TO4 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay The system also generates an error code identifying the fault that has occurred see the chapter entitled Error codes SOI 05 06 39 53 599 36 07 64 4 1 7 SCHEMATIC DIAGRAM OF APPLICATION ON KRONOS LEVEL 3 WITH BIMETAL DOOR LOCK SOEC BOARD KRONOS GRILL PCB DISPLAY L3 RJ Top Ri TH1 4 B TH3 T B RIG L F
34. in the door lock system The signal from the microswitch is sent to an electronic circuit for control of the self cleaning cycle and to light up the oven lamp when the door is open Fig 1 1 1 HDC00263 JPG 1 DOOR LATCH 4 CONTROL LEVER ON 2 PROTECTION CARD MICROSWITCH 3 MICROSWITCH DOOR SWITCH 5 CONNECTING WIRES FOR MICROSWITCH 4 3 HDCD0266 JPG Fig 12 1 PROTECTION CARD 4 DOOR LOCK 2 DOOR LATCH 5 DOOR LOCK BODY MICROSWITCH DOOR SWITCH 6 CONNECTING WIRES FOR MICROSWITCH NOTE BEFORE USING A DOOR LOCK ASSEMBLY AS A REPLACEMENT PART REMOVE THE PROTECTION CARD SHOWN IN FIGURE 11 501 05 08 11 53 599 36 07 64 3 4 1 5 THAT ACTUATE THE DOOR The various electrical contacts that control the door lock are illustrated below 501 05 08 HDC00262 JPG Fig 13 1 2 3 4 A DOOR LATCH SWITCH CONTACTS 3 2 SWITCH CONTACTS 3 4 SWITCH CONTACTS 33 34 CONTROL BAR 12 53 599 36 07 64 3 4 2 CONFIGURATION OF LOCK WHEN DOOR IS FREE POSITION OF LATCH WHEN DOOR IS FREE Fig 14 1 DOOR LATCH OPEN DOOR IS FREE 2 BUTTON ON MICROSWITCH 3 MICROSWITCH IN CLOSED POSITION DIAGRAM POSITION OF CONTACTS WHEN DOOR IS FREE HDCOD268 JPG Fig 15 CLOSE UP OF CONTACTS WHEN DOOR IS FREE HDC00267 JPG Fig 16 A CONTROL BAR 501 05 08 13 53 599 36 07 64 3 4 3 POSITIONS OF DOOR LOCK SYSTEM WHEN DOOR IS LOCK
35. ing temperature is reached approx 465 on the oven temperature sensor the self cleaning time starts approx 1 hour for program P1 see Fig 42 approx 1 hour and 30 for program P2 see Fig 43 The self cleaning temperature is maintained by the heating elements upper lower or grill element At the end of the self cleaning time during the final 30 minutes see diagrams Fig 42 and Fig 43 all heating elements are shut off When the temperature in the oven is between 350 C and 320 C i e when the temperature on the oven temperature sensor is from 400 to 38090 thermostat TH2 closes and sends an unlock door signal to the power board which will unlock the door when the temperature on the oven temperature sensor falls below 300 C At this point the appliance emits beep When the oven temperature reaches approx 280 C with the oven temperature sensor at 300 C thermostat TH3 opens and places voltage dropping resistor RL back on line which causes the cooling fan to operate at low speed The fan shuts off when the temperature on the temperature sensor drops to 115 C IMPORTANT The temperature values specified above for the centre of the oven are approximate and may vary from model to model 501 05 08 23 53 599 36 07 64 3 7 1 SCHEMATIC DIAGRAM VERSION WITH BIMETALLIC DOOR LOCK SYSTEM KRONOS DISPLAY L3 Fig 39 DISPLAY L3 DL GRILL PCB NEUTRAL PHASE PT500 R1 R2 R3 R4
36. itched on If the grill is used relay 301 on the grill control board is also actuated Temperature sensor PT500 is also connected to the power board The resistance of this sensor varies as oven temperature varies When the electronic control system detects the resistance value on PT500 that corresponds to the temperature set for the oven the system shuts off the heating elements The door lock assembly for the self cleaning function powered by triac TP54 is also connected to the power board Thermostat TH2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SWA signals the power board that the door is closed If oven temperature exceeds 120 TP52 starts cooling fan M2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 C Thermostat TH3 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay The system also generates an error code identifying the fault that has occurred see the chapter entit
37. ith a grill element instead of the lower element As occurs during standard baking when the temperature sensor PT500 reaches a temperature of approx 120 C the temperature at the centre of the oven will be approx 100 C the cooling fan powered by triac TP54 and voltage dropping resistor RL begins operating at low speed When the temperature sensor reaches approx 305 TP54 actuates door lock DL to lock the oven door terminal 1 on power board connector 21 When the temperature reaches approx 310 as sensed by the oven sensor thermostat TH3 closes and short circuits resistor RL which causes the cooling fan to operate at high speed When door lock DL locks contacts 33 and 34 on the door switch close and door locked is signalled on the power board through connector BDO1 If this door locked signal is not present the power board the system will not increase the temperature of the oven and the control relay SP35 on upper heating element will open When this occurs the circuit that detects the door locked signal executes a control cycle that lasts approx 10 minutes If the door locked signal is not present at the end of this cycle the system enters the alarm mode When the temperature in the oven is between 320 and 350 i e when the temperature the oven temperature sensor is from 380 C to 400 C thermostat TH2 opens to prevent false signals from unlocking the door When the self clean
38. led Error codes SOI 05 06 41 53 599 36 07 64 4 1 9 SCHEMATIC DIAGRAM OF APPLICATION KRONOS LEVEL 3 WITH MOTOR POWERED Fig 48 DOOR LOCK OVC1000 BOARD s Chan Lamp Cooling fan Hen R1 2 88 8 2 09 me 6520 DISPLAY L3 KRONOS LEVEL 3 CONTROL UNIT OVC1000 REL2 REL3 DOOR LOCK ASSEMBLY MAINS EARTH OVEN LAMP CONVECTION FAN COOLING TANGENTIAL FAN MAINS NEUTRAL PHASE MAINS POWER PHASE OVEN SENSOR PT500 GRILL HEATING ELEMENT LOWER HEATING ELEMENT BOTTOM HEATING ELEMENT TOP CONVECTION HEATING ELEMENT CIRCULAR POWER BOARD SAFETY MAIN RELAY CONTROL RELAY FOR CONVECTION HEATING ELEMENT CONTROL RELAY FOR UPPER HEATING ELEMENT SOI 05 06 42 53 PS Phase Ground HDCO10885 JPG CONTROL RELAY FOR GRILL HEATING ELEMENT CONTROL RELAY FOR BOTTOM HEATING ELEMENT DROP RESISTOR FOR FAN DOUBLE SPEED DOOR LOCK HOOK MICROSWITCH DOOR CLOSED MICROSWITCH SAFETY THERMOSTAT DOOR LOCK THERMOSTAT TRIAC FOR LAMP OVEN TRIAC FOR CONVECTION FAN CONTROL TRIAC FOR COOLING TANGENTIAL FAN CONTROL TRIAC FOR COOLING TANGENTIAL FAN SECOND SPEED TRIAC FOR DOOR LOCK LOW VOLTAGE TRANSFORMER 599 36 07 64 4 1 10 OPERATIONAL DESCRIPTION OF LEVEL 3 KRON
39. power board that the door is closed If oven temperature exceeds 120 TP52 starts cooling fan M2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 Thermostat TH3 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 Thermostat TH4 keeps the cooling fan operating if the temperature exceeds 120 C at the end of the automatic baking cycle set on the timer If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay SPO6 SOI 05 06 45 53 599 36 07 64 4 3 APPLICATION RHEA 4 3 1 SCHEMATIC DIAGRAM OF APPLICATION ON WITH BIMETAL DOOR LOCK SOEC BOARD 2228 Eel REA NEUTRAL PT500 gt HDCO0A28 JP GG Fig 50 DISPLAY R H E A CONTROL UNIT GENERAL SAFETY RELAY DOOR LOCK ASSEMBLY CONTROL RELAY FOR GRILL OVEN LAMP HEATING ELEMENT LOW VOLTAGE TRANSFORMER CONTROL RELAY FOR BOTTOM TURNSPIT MOTOR HEATING ELEMENT HOT AIR FAN CONTROL RELAY FOR TOP HEATING TANGENTIAL COOLING FAN ELEMENT NEUTRAL MAINS NEUTRAL PHASE MICROSWITCH DOOR CLOSED
40. res than a normal oven the ventilation system operates differently The cooling fan can operate at two speeds During baking the fan is powered through a voltage dropping resistor When the self cleaning mode is selected and the temperature at the centre of the oven exceeds 350 fan control thermostat CV short circuits resistor RC As a result the fan is powered directly and its speed and air flow increases COOLING FAN COOLING FAN IN BAKING MODE IN SELF CLEANING MODE LOW SPEED HIGH SPEED 150 V Fig 4 Fig 5 FAN SWITCH L POWER PHASE N NEUTRAL PHASE RC VOLTAGE DROPPING RESISTOR VT COOLING FAN 9 VALUES ARE APPROXIMATE AND DEPEND ON COMPONENT TOLERANCES 501 05 08 8 53 399 36 07 64 3 4 BIMETALLIC DOOR LOCK Units with a self cleaning feature are equipped with a special door lock system see Fig 6 and 7 that prevents the door from opening when the self cleaning cycle is in progress The door is locked by two bimetallic elements that move a bar which locks or releases the door The system operates during the self cleaning cycle whether mains power is fed to the appliance or not The door locks when the temperature at the centre of the oven exceeds 325 C and is released when the temperature reaches 300 as detected by thermostat TH2 see diagram Fig 39 p 24 The thermostat is located on the support for the grill element at the top of the oven see Fig 9 DOOR LOC
41. the power board Thermostat TH2 prevents false signals from unlocking the door during the self cleaning cycle see explanation on p 23 Microswitch SWA signals the power board that the door is closed If oven temperature exceeds 120 TP52 starts cooling fan M2 to improve cooling in the areas outside the oven compartment muffle where electronic components are located When the selected baking cycle ends or when the appliance is shut off the cooling fan operates until the temperature at the centre of the oven falls below 110 C Thermostat TH3 and resistor RL form a circuit that generates two speeds on the cooling fan as explained on p 23 If a fault occurs in the oven system such as a malfunctioning relay or temperature sensor the temperature sensor detects the malfunction and the system shuts off the power to the appliance using safety relay The system also generates an error code identifying the fault that has occurred see the chapter entitled Error codes SOI 05 06 47 53 599 36 07 64 4 3 3 SCHEMATIC DIAGRAM OF APPLICATION WITH MOTOR POWERED DOOR LOCK OVC1000 BOARD 189 JPG NEUTRAL PHASE PT500 R1 R2 H3 1000 REL2 HEL3 4 SOI 05 08 D RHEA display DOOR LOCK VOLTAGE DROPPING RESISTOR FOR MAINS EARTH DOUBLE SPEED FAN OVEN LAMP ROTARY SELECTOR CONVECTION FAN TIM

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