BoilerFaultCodes 551 High
Boiler Fault Code 551
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 551 appears across 1 boiler brand and 1 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 it is getting too hot and has automatically shut down to prevent damage or dangerous overheating. (As reported on ECA FELiS FL 50 HM)
Pick your boiler brand for the 551 fix
Source
Information for the 551 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