Model reference
Bosch HBN7
Oven
2 documents24 error codes6 service modes
Available documentation
Service Manual
- Hbl/hbn 7 Fault Code Definitions and Basic Troubleshooting14 pg
- Bosch Oven HBL73 74 75 76 and HBN74 75 76 Service Manual60 pg
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Error codes (24)
CodeMeaning
F111Runaway upper (or single) oven temperature exceeding 650°F; may be caused by…F112Runaway lower oven temperature exceeding 650°F; may be caused by oven powered…F113Runaway upper (or single) oven temperature exceeding 950°F; caused by…F114Runaway lower oven temperature exceeding 950°F; caused by intermittent/bad…F121Stuck keyboard key; bad display head or bad keyboard.F123Keyboard disconnected; bad connection between keyboard and Display Board.F125Upper Cancel (or Cancel for single oven) key circuit problem; bad connection or…F126Lower Cancel key circuit problem; bad connection or bad display or keyboard.F127Cancel key redundant return problem; bad connection or bad Display Board or…F141Slave micro not functioning; bad Power Board or Display Board.F143Vcc open circuit on slave micro; bad Power Board or Display Board.F145Sensor input on the slave micro shorted together; bad Power Board.F147Ground open circuit on the slave micro; bad Power Board.F151EEPROM failure or communication circuit error; bad Display Board or Power Board.F153Control calibration values not in range; bad Power Board or Display Board.F155Checksum match error; wrong EEPROM data on Display Board.F31Upper (or single) oven temperature sensor failure due to an open or short…F32Lower oven temperature sensor failure due to an open or short circuit in the…F41Upper (or single) oven motorized latch will not lock; defective or jammed…F42Lower motorized latch will not lock; defective or jammed lower oven door/latch…F43Upper (or single) oven motorized latch will not unlock; defective or jammed…F44Lower motorized latch will not unlock; defective or jammed lower oven…F45Upper (or single) oven latch reports both locked and unlocked simultaneously…F46Lower oven latch reports both locked and unlocked simultaneously; defective or…Service modes (6)
- Bypass Latch Auto-Test at Power-Up["Keep the [Start] key pressed while supplying the oven with power.","Hold until the clock is…
- Manual Test["Must be accessed within 5 minutes of power-up.","Do NOT press [Cooking Mode] key before entering…
- Oven Model Selection["Enter Manual Test mode first (see Manual Test procedure).","Press [Cooking Mode] key.","Turn the…
- Persistent fault resetPress and hold the [Start] key for one minute until F121 is displayed, then press [Cancel].
- Power Supply Selection (240V/208V)["Connect the oven to power.","Open the oven door (upper oven for double).","Turn the knob 6…
- Special Features Menu["Touch and hold [COOKING MODE] for 3 seconds.","Clock time disappears and display screen…
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