BoilerFaultCodes 2945 Medium
Boiler Fault Code 2945
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2945 appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is rapidly cycling on and off because it cannot efficiently release the heat it is generating, which often points to a blockage or a bottleneck in your heating system. (As reported on Worcester Bosch Greenstar 27CDi)
Pick your boiler brand for the 2945 fix
Source
Information for the 2945 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