Complaints of noise (7) Medium

Chaffoteaux Complaints of noise (7) Fault Code

Also written as COMPLAINTSOFNOISE7 — same fault.

The Chaffoteaux Complaints of noise (7) fault code means: your boiler is struggling to push water through its internal pipes, which is causing it to make loud, rattling or banging noises as it tries to operate.. It appears on 2 Chaffoteaux models in our database.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: Resistance to water flow.
Typical repair cost £150-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Chaffoteaux models that show the Complaints of noise (7) fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Chaffoteaux Complaints of noise (7) fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.

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