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Error code reference
Bosch Cooktop Error Codes
11 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
ER 12Mismatch of relay port pin and software register.ER 13Invalid EEPROM data detected.ER 22Keyboard error detected by the mTwist control system.ER 23PWM frequency out of limit.ER 24Wrong number of relays detected.ER 25False connection of mains supply detected.ER 26Relay supply voltage too high in the off state of control.ER 35Selection of keys error detected by the mTwist control system.F2User Interface overheating errorF4User Interface overheating errorF5User Interface overheating warning
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