BoilerFaultCodes A 17 High
Boiler Fault Code A 17
Also written as A17 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code A 17 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 The internal computer in your boiler has encountered an unrecoverable system error and is unable to operate safely anymore. (As reported on Vokera Verve I 50)
Pick your boiler brand for the A 17 fix
Source
Information for the A 17 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