Complaints of noise (1) Emergency

Chaffoteaux Complaints of noise (1) Fault Code

Also written as COMPLAINTSOFNOISE1 — same fault.

The Chaffoteaux Complaints of noise (1) fault code means: your boiler is receiving too much gas, which is causing it to run inefficiently and create unusual, loud noises.. It appears on 2 Chaffoteaux models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Over-gassed.
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 (1) fault code

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

Source

Chaffoteaux Complaints of noise (1) 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 7 July 2026