BoilerFaultCodes 00 - FF Low
Boiler Fault Code 00 - FF
Also written as 00FF — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 00 - FF appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is displaying a status report of the most recent error it encountered, rather than a single specific active problem. (As reported on Worcester Bosch Ri 25 HE)
Pick your boiler brand for the 00 - FF fix
Source
Information for the 00 - FF 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