BoilerFaultCodes ALARM 06 High
Boiler Fault Code ALARM 06
Also written as ALARM06 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code ALARM 06 appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has tried to start but could not detect a flame, likely because gas isn't reaching the burner or the ignition spark is failing. (As reported on Sime Murelle HE System)
Pick your boiler brand for the ALARM 06 fix
Source
Information for the ALARM 06 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