BoilerFaultCodes Excessively noisy burner - 2 High
Boiler Fault Code Excessively noisy burner - 2
Also written as EXCESSIVELYNOISYBURNER2 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Excessively noisy burner - 2 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 is making loud banging or roaring sounds because the internal parts that mix and burn the gas have become clogged with debris, causing an uneven flame. (As reported on Chaffoteaux Flexiflame 140)
Pick your boiler brand for the Excessively noisy burner - 2 fix
Source
Information for the Excessively noisy burner - 2 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