BoilerFaultCodes Flame detection fault High
Boiler Fault Code Flame detection fault
Also written as FLAMEDETECTIONFAULT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Flame detection fault appears across 1 boiler brand and 7 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 or keep it running, which means it cannot provide you with heating or hot water until the ignition system is serviced. (As reported on Worcester Bosch Greenstar 27CDi)
Pick your boiler brand for the Flame detection fault fix
Source
Information for the Flame detection fault 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