BoilerFaultCodes A98 High
Boiler Fault Code A98
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code A98 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 internal computer has encountered a software glitch or a configuration error and needs to be restarted and recalibrated. (As reported on Ferroli Bluehelix HiTech RRT)
Pick your boiler brand for the A98 fix
Source
Information for the A98 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