How much does it cost to fix boiler error code Complaints of noise - 4?

Typical repair cost for the boiler Complaints of noise - 4 fault is £150-250 including labour.

Complaints of noise - 4 Medium

Boiler Fault Code Complaints of noise - 4

Also written as COMPLAINTSOFNOISE4 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Complaints of noise - 4 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 a noise because a valve inside is getting stuck, which can cause the system to stay on when it should be off. (As reported on Chaffoteaux Flexiflame 140)

Pick your boiler brand for the Complaints of noise - 4 fix

Chaffoteaux Complaints of noise - 4 2 models

Source

Information for the Complaints of noise - 4 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