BoilerFaultCodes 386 575 High
Boiler Fault Code 386 575
Also written as 386575 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 386 575 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 is failing to light the flame because the internal component responsible for creating the initial spark is not making a proper connection. (As reported on Ideal Mexico Super 100FF / 125FF)
Pick your boiler brand for the 386 575 fix
Source
Information for the 386 575 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