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 because the spark system responsible for igniting the gas is not working correctly. (As reported on Ideal Mexico Super CF3 40-80)
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 27 April 2026