BoilerFaultCodes Fault 11 / 131 High
Boiler Fault Code Fault 11 / 131
Also written as FAULT11131 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fault 11 / 131 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 has detected a new internal electronic component or communication device and requires a manual reset to confirm and sync the system. (As reported on Worcester Bosch Greenstar CDi Compact)
Pick your boiler brand for the Fault 11 / 131 fix
Source
Information for the Fault 11 / 131 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