017 High
Boiler Fault Code 017
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 017 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's computer system has encountered an internal error and has shut down to prevent damage, meaning you currently have no heating or hot water. (As reported on Ideal Maximiser SE)
Pick your boiler brand for the 017 fix
Source
Information for the 017 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