BoilerFaultCodes 357 Low
Boiler Fault Code 357
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 357 appears across 1 boiler brand and 11 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is currently running a self-cleaning sequence to remove air bubbles from the internal heating circuit, which usually happens when it is first turned on or after maintenance. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 357 fix
Source
Information for the 357 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