BoilerFaultCodes 415 High
Boiler Fault Code 415
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 415 appears across 1 boiler brand 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's internal computer has suffered a technical failure and is unable to communicate with its own components. (As reported on Ideal Response SE)
Pick your boiler brand for the 415 fix
Source
Information for the 415 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