BoilerFaultCodes EEPROM LOCKOUT High
Boiler Fault Code EEPROM LOCKOUT
Also written as EEPROMLOCKOUT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code EEPROM LOCKOUT appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's computer memory has encountered a software error and can no longer process instructions safely. (As reported on Johnson Starley J32 System ET)
Pick your boiler brand for the EEPROM LOCKOUT fix
Source
Information for the EEPROM LOCKOUT fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026