BoilerFaultCodes 2970 B High
Boiler Fault Code 2970 B
Also written as 2970B — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2970 B appears across 1 boiler brand and 13 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 that the water pressure in your radiators is falling much faster than expected, which could indicate a significant leak. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 2970 B fix
Source
Information for the 2970 B 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