BoilerFaultCodes OPTIMAX HE PLUS 38C High
Boiler Fault Code OPTIMAX HE PLUS 38C
Also written as OPTIMAXHEPLUS38C — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code OPTIMAX HE PLUS 38C appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has failed to ignite, meaning it tried to start but couldn't light the gas flame to provide heating or hot water. (As reported on Ferroli iBoiler 28)
Pick your boiler brand for the OPTIMAX HE PLUS 38C fix
Source
Information for the OPTIMAX HE PLUS 38C 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