Bosch HBL 73 Service Manual
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Bosch HBL 73 Service Manual

Single and double built-in ovens
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  • Page 5: Oven Modes

    Oven Modes The following illustrations give an overview of what happens in the oven with each mode setting. The arrows represent the location of the heat source during specific modes. The lower element is concealed under the oven floor. CONVECTION ROAST Convection Roast uses the top element, bottom element and convection fan.

  • Page 9: Setting The Clock

    Setting the Clock • The time of day is displayed in hours and minutes. • Always set the clock immediately after installation or after a power failure. Once power returns to the oven, the clock displays the time of day when the power was turned off or lost. •...

  • Page 10: Using Oven Lights

    Using Oven Timer TO SET THE TIMER: TO CHANGE THE TIMER: 1. Touch TIME once. Display timer will begin flashing 1. Touch TIME 2 times. Display timer will begin and TIMER will appear in display. flashing and CHANGE TIMER will appear in display. 9:31 0:34 AM AM AM AM AM...

  • Page 11: Selecting The Oven Mode

    Selecting the Oven Mode The following oven modes will appear in the display 5. To select a different mode, turn the knob to the when COOKING MODE is touched and the knob right or left. is turned: 6. The selected mode will appear in the display, along BAKE BAKE BAKE...

  • Page 12: Time Oven Mode Operation

    Time Oven Mode Operation • In double oven models, both ovens can be set 3. Use knob to enter the time of day the oven will independently to operate a timed mode. stop cooking or turn off. • Be sure that the time-of-day clock is displaying the CONVECTION 400ºF correct time.

  • Page 13: Special Features

    Special Features The Special Features function can be used to select the following 10 special oven features: 1. LOCK KEYS (Child Lockout) 2. SABBATH MODE (for religious faiths with “no work” requirements on the Sabbath) 3. OVEN OFFSET 1 (upper oven – used to calibrate the oven temperature) 4.

  • Page 14: Setting The Self-Clean Mode

    Setting the Self-Clean Mode TO SET THE SELF-CLEAN MODE: 7. At the end of the programmed cleaning time, the 1. Touch UPPER/LOWER to select oven to be oven will automatically turn off. cleaned. 8. To cancel or stop the mode after the lock symbol 2.
  • Page 15 BSH wall ovens Series 700 Maintaining And Cleaning To clean the cavity and the inner door never use any metal tool. After the Pyrolytic Cleaning process use only a damped cloth or sponge with dish soap for final cleaning of the surfaces. Grids and cookie sheets must always be removed before using the Selfcleaning mode.
  • Page 16 MEAT PROBE COOKING ************* - Temperature probe range is 130°F to 210°F (55°C to 100°C), while the default setting is 170°F (77°C). Maximum cavity temperature when using meat probe is 475°F (245°C). ************* 1. Insert the probe inside the thickest portion of meat. 2.
  • Page 17 OVEN REGULATION PARAMETERS FOR COOK MODES Elements used during Preheat Operation Full- On-Time (in seconds) Conv Default Serial power Temperature Cooking Function period Speed °C / °F in seconds Lower Upper Ring Additional Bake 175 / 350 Convection Preheat cycle Full 160 / 325 Bake...
  • Page 18 Comparison between Bake and Fast Preheat Bake BakeCentre BakeSensor FPBakeCentre FPBakeSensor Setpoint time (hr:min:sec)

  • Page 19: Sabbath Mode

    SABBATH MODE ************* - To select Sabbath mode, press [Cooking Mode] key for some seconds while in stand-by to enter the user options menu and select the item. - Sabbath is actually a bake mode, with additional “no work” requirements due to religious faith. - To start a Sabbath in one cavity, select it by pressing [cooking mode] key and rotating the knob, then pressing [start] key, as usual.

  • Page 20: System Parts

    SYSTEM PARTS 1. DISPLAY BOARD. It’s mounted on the front panel, it’s the oven brain. It handles the user interface (display, keyboard and knob), receives inputs and send information to drive all outputs through the Power Board. 2. POWER BOARD. It’s mounted on the cooling channel, it provides the Display Board with all its power lines.
  • Page 21 5. SAFETY THERMOSTATS. The oven is provided with two safety thermostats. They simply cut off L2 when temperature inside gets too high. The high temperature one (165°C) is always in series with the heaters, the low temperature (110°C) is by-passed during self-clean. They are mounted together, behind the cooling fan.
  • Page 22 12. MEAT PROBE. The oven is provided with a meat probe, which needs only to be plugged in its receptacle on the cavity left side wall.

  • Page 23: Important Warnings

    IMPORTANT WARNINGS 1. LATCH AUTO-TEST. At power-up, the control runs a latch mechanism self-test. The display shows the message UNLOCKING DOOR until both cavities have completed their lock/unlock cycle. This allows the user to restore the latch position, in case of any problem: turn off the main power supply and wait for a few minutes before re-powering.
  • Page 24 OVEN MODEL SELECTION This operation is normally executed at the manufacturer facilities. If the display board has to be replaced, the oven model must be reconfigured. At first power-up, the Double Oven is always configured as a 30” both multifunction cavities. MANUAL TEST ACCESS PROCEDURE: 1.
  • Page 25 OVEN MODEL SELECTION SINGLE OVEN This operation is normally executed at the manufacturer facilities. If the display board has to be replaced, the oven model must be reconfigured. There is only one single part number for the display board then, after having replaced it, also a single oven is configured as a double oven 30”...
  • Page 26 To reconfigure the oven model as a single: 1. Press [Cooking Mode] key. 2. Turn the knob to select the correct oven model. N° MOD DISPLAY OVEN MODEL 30 CONVECT 1 30” SINGLE MULTIFUNCTION 30 THERMAL 1 30” SINGLE THERMAL 27 CONVECT 1 27”...

  • Page 27: Power Supply Selection

    POWER SUPPLY SELECTION The oven provides a 208V power supply option, for areas where the standard 240V is not available. First connect the oven to power then, to access this option, follow the procedure below: 240V/208V POWER SELECTION: 1. Open the oven door (upper oven for double). 2.

  • Page 28: Manual Test

    MANUAL TEST The scope of the test is to check all the control outputs independently. Turn the knob CW to proceed with the following steps. Single oven has only step 1 to 8. N° CAVITY DISPLAY ACTIVATED OUTPUT 1 UPPER UPPER Upper element (3500W at 240V).
  • Page 29 In a double oven , steps 1 to 8 are for upper cavity, steps 9 to 16 are for the lower one. 9 LOWE UPPER Upper element ELEMENT (3500W at 240V). 10 LOWE LOWER Lower element ELEMENT (3000W at 240V). 11 LOWE RING Ring element...
  • Page 30 OPERATIONS TO CHECK REMAINING FUNCTIONALITIES 1. Latch mechanism and cooling fan high speed. Press [Cooking Mode] key then turn the knob CW until the CLEAN mode is found. Press [Start] key once and again when the writing REMOVE RACKS appears. The control runs the latch until the door is locked.
  • Page 31 4. Meat probe. Plug the meat probe in its receptacle, on the left side in the cavity. In a double oven only the upper cavity can be used for probe cooking. The probe icon on the display must be shown whenever the probe is inserted. If it blanks or flashes a problem in the connection may exist.
  • Page 32 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY SYSTEM PARTS 1. DISPLAY BOARD. Mounted on the front panel, it’s the oven brain. It manages the user interface (VFD display, selection knob and keyboard), receives inputs (directly from the field or by means of the Power Board) and sends information to the Power Board to drive all outputs (heaters and auxiliary loads).
  • Page 33 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY 8. SAFETY THERMOSTATS. The oven is provided with two safety thermostats, mounted together, behind the cooling fan. The high temperature one (165°C) is always connected in series with the heaters, the low temperature (110°C) is by-passed during...
  • Page 34 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY USEFUL INFORMATION ABOUT THE ELECTRONIC CONTROL: 1. SHORT POWER OFF. In case of power loss for a short time, the control saves the currently active settings in its memory. It fetches all these values as soon as power recovers.
  • Page 35 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY OVEN MODEL SELECTION This operation is normally executed at the manufacturer facilities. When a Display Board needs to be replaced in the field, Service Technicians must take care of it.

  • Page 36: Manual Test Access Procedure

    Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY WARNINGS Ø DON’T PRESS [COOKING MODE] KEY BEFORE ENTERING MANUAL TEST. THE PROCEDURE WILL BE DISABLED. Ø...
  • Page 37 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY The tables below show the two different sets of options when entering the oven model selection menu for the double or single oven: N°...
  • Page 38 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY After a system reset, the following writings are displayed: V0515 C0047 F000 C2K2EAC They indicate: The SW flash program code V0515.
  • Page 39 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY BASIC TROUBLESHOOTING CHECK CONNECTIONS MEANS: 1. ALL CONNECTIONS MUST CORRESPOND TO THE ELECTRIC SCHEMATICS. EXCHANGING CONNECTIONS CAN DAMAGE THE BOARDS.
  • Page 40 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY 2. Ensure door latch switches are operating properly. 3. Check connections between P10 connector on the Power Board and the latch motor.
  • Page 41 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY 3. Check connections between P10 connector and the latch motor. 4. Replace Power Board. UPPER OR SINGLE OVEN LATCH 1.
  • Page 42 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY F112 LOWER OVEN 650°F RUNAWAY 1. Allow oven to cool to <650°F before turning power on. CONDITION 2.
  • Page 43 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY 2. If OK, replace keyboard or Display Board or both. F125 UPPER OR SINGLE CANCEL KEY 1. Check all connections between keyboard (J1) and Display Board (P5).
  • Page 44 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY MICRO F151 EEPROM FAILURE OR 1. Check power and Display Board connectors P1B and associated wiring. COMMUNICATION CIRCUIT 2.

  • Page 45: Meat Probe

    Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY ITEM ANOMALY ACTION MEAT PROBE The icon is displayed when the 1. Check connections, P2 on the display board.
  • Page 46 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY BUZZER It never beeps. 1. Check connections, referring to P1A cable shown in the Display Board ó Power Board table.
  • Page 47 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY It doesn’t work or the high speed 1. Check the connections between the cooling fan and the Power Board doesn’t work.

  • Page 48: Door Latch

    Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY One of the heaters doesn’t turn on. 1. Check connections between the heater and its relay on the Power Board.
  • Page 49 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY CALIBRATION POWER UP SEE 1. This message is displayed at power-up when a calibration error has ERROR CALVAL ERROR been detected.
  • Page 50 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY THE FOLLOWING TABLES PROVIDE INFORMATION ABOUT EACH LINE IN THE PIN-TO-PIN CABLES CONNECTING THE ELECTRONIC BOARDS. SOMETIMES THE ELECTRONIC BOARDS ARE CHARGED WITH BEING RESPONSIBLE FOR MANY FAULTS WHEN ACTUALLY THEY ARE CAUSED BY BAD CONNECTIONS.
  • Page 51 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY - P1B (12POS) – double oven version CONNECTION CABLE BETWEEN POWER AND DISPLAY BOARD FUNCTION NOTES RESET THE POWER BOARD RESETS THE DISPLAY BOARD IF COMMUNICATION PROBLEMS OCCUR.
  • Page 52 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY - P1B (12POS) – single oven version CONNECTION CABLE BETWEEN POWER AND DISPLAY BOARD FUNCTION NOTES RESET THE POWER BOARD RESETS THE DISPLAY BOARD IF COMMUNICATION PROBLEMS OCCUR.
  • Page 53 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY The two tables below show the meaning of the lines belonging to the cables between the Power and the Auxiliary Board. They represent a means to drive the working fan high speed and the Double Line Break (DLB) relays when requested (Canada).
  • Page 54 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY CONNECTION CABLE BETWEEN DISPLAY BOARD P5 (10POS) AND KEYBOARD J1 (STRIP 12POS) Double oven version FUNCTION NOTES NOT USED CONNECTED WITH J1-1 ON THE KEYBOARD.
  • Page 55 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY CONNECTION CABLE BETWEEN DISPLAY BOARD P5 (10POS) AND KEYBOARD J1 (STRIP 12POS) Single oven version FUNCTION NOTES NOT USED CONNECTED WITH J1-1 ON THE KEYBOARD.
  • Page 56 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY SOFTWARE TRACKING FEATURE TO DETECT A SHORT CIRCUIT BETWEEN THE TEMPERATURE INPUTS ON THE POWER BOARD MICROCONTROLLER. (F145 FAULT, double oven only) Given that the temperature sensor input channels on the micro controller are close, UL requires an additional software feature to detect if these inputs are shorted together and temperature measurement is not working correctly.
  • Page 57 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY The F145 fault may occur in different times, given that the counter increment rate can be very different depending on the cooking mode, the set-point temperatures, etc.:...
  • Page 58 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY Temperature regulation and heater cycles. According to the temperature set point, the control drives the heaters to catch up with it. The cycles are defined for every cooking mode as described in the next page table.
  • Page 59 Tuesday, June 18, 2002 BOSCH 700 SERIES: ELETTRODOMESTICI SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING VIA CHECCHI 98 I 21013 GALLARATE ITALY OVEN REGULATION PARAMETERS FOR COOKING MODES Elements used during Preheat Operation Default On-Time (in seconds) Full-power Serial...

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