BoilerFaultCodes 550 High
Boiler Fault Code 550
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 550 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 switched itself off because it has detected that it is getting dangerously hot, preventing it from starting up again for your safety. (As reported on ECA FELiS FL 50 HM)
Pick your boiler brand for the 550 fix
Source
Information for the 550 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