BoilerFaultCodes 146 High
Boiler Fault Code 146
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 146 appears across 2 boiler brands 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 has become confused because its main control board and internal settings do not match, meaning it doesn't know how to operate properly. (As reported on ECA FELiS FL 50 HM)
Pick your boiler brand for the 146 fix
Source
Information for the 146 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 7 July 2026