Boiler Fault Code Complaints of noise - 5

Also written as COMPLAINTSOFNOISE5 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code Complaints of noise - 5 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 experiencing a mechanical fault where the valve responsible for controlling gas flow is not closing properly, which can create unusual noises and requires immediate professional attention. (As reported on Chaffoteaux Flexiflame 140)