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Model reference

Bosch HBN746AUC

Oven

1 document24 error codes5 service modes

Available documentation

Service Manual

  • Bosch Oven HBL73 74 75 76 and HBN74 75 76 Service Manual60 pg
    Covers this model
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Error codes (24)

CodeMeaning
F111Upper or single oven 650°F runaway condition.F112Lower oven 650°F runaway condition.F113Upper or single oven 950°F runaway condition.F114Lower oven 950°F runaway condition.F121Stuck keyboard key detected.F123Keyboard disconnected.F125Upper or single cancel key circuit problem.F126Lower cancel key circuit problem.F127Cancel key redundant return problem.F141Slave micro not functioning.F143VCC open circuit on slave micro.F145Temperature sensor inputs shorted together (double oven only).F147GND open circuit on slave micro.F151EEPROM failure or communication circuit error.F153Control calibration values out of range.F155Corrupted EEPROM; at power-up may be benign checksum error, but if displayed…F31Upper or single oven temperature sensor failure.F32Lower oven temperature sensor failure.F41Upper or single oven latch will not lock.F42Lower oven latch will not lock.F43Upper or single oven latch will not unlock.F44Lower oven latch will not unlock.F45Upper or single oven latch both locked and unlocked simultaneously.F46Lower oven latch both locked and unlocked simultaneously.

Service modes (5)

  • 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…
  • 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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