BoilerFaultCodes 341 High
Boiler Fault Code 341
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 341 appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is shutting down because the water inside is heating up much faster than it is moving, which often means there is an internal blockage or a pump issue. (As reported on Worcester Bosch 1000)
Pick your boiler brand for the 341 fix
Source
Information for the 341 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