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Model reference

Bosch HES442U

Range

3 documents33 error codes3 service modes

Available documentation

Service Manual

  • Free Standing Range (FSR/FSR3) and Slide-In Range (SIR) Service Manual116 pg
    Covers this model
  • ServiceManual BoschFSR116 pg
    Covers this model

Bulletin

  • Technical Information Bulletin - Free-standing Range (FSR) Control Board Configuration2 pg
    Covers this model
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Error codes (33)

CodeMeaning
ER 12Mismatch of relay port pin and software register on MTwisT control.ER 13Invalid EPROM data on MTwisT control.ER 22Keyboard fault on MTwisT control.ER 23PWM frequency out of limit on MTwisT control.ER 24Wrong number of relays on MTwisT control.ER 25False connection mains on MTwisT control.ER 26Relay supply voltage too high (off state of control) on MTwisT control.ER 3Selection of keys fault on MTwisT control.F1Meat probe failure during test or service mode.F111Runaway oven temperature 585°F detected while latch is unlocked (5 sec fault…F113Runaway oven temperature 950°F detected while latch is locked (5 sec fault…F120Any key (except Cancel) pressed longer than 60 seconds.F121Touch key voltage out of limits (except cancel key).F122Selection mechanism for touch keys faulty.F124Cancel key pressed for more than 60 seconds.F125Cancel touch key voltage out of limits.F141Slave micro not functioning.F151EEPROM failure or communication circuit failure during cook or clean mode.F153User interface board too hot.F154Power board too hot.F155Cook profile corrupted in EPROM during cook or clean mode.F160Cooling fan hall effect feedback not present (checked when NTC temp is in…F170Power failure detected (2 ms fault limit).F190Power over voltage detected at power on.F2Oven sensor failure during test or service mode.F200Time out and stop function during production test mode (110 sec limit).F210Range exceeded safe test limits during service test mode (200°F limit).F3Warming drawer sensor failure during test or service mode.F31Oven temperature sensor failure during cook or clean mode (20 sec fault limit…F33Warming drawer sensor failure when warming drawer is active (20 sec fault…
View all 33 error codes
F41Motorized latch will not lock when latch should be locked; all heating…F43Motorized latch will not unlock when latch should be unlocked; all heating…F45Motorized latch both locked and unlocked detected simultaneously; contacts A…

Service modes (3)

  • Service Configuration Mode (FSR3 models 30, 50, 70, 71, 72)1
  • Service/Test ProgramPlace a finger on the cooking mode, temperature, and start touch zones simultaneously and hold for…
  • Thermostat Calibration (Oven Temp Offset)1

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