How much does it cost to fix Chaffoteaux error code Complaints of noise (2)?

Typical repair cost for the Chaffoteaux Complaints of noise (2) fault is £0-£90 including labour.

Complaints of noise (2) Low

Chaffoteaux Complaints of noise (2) Fault Code

Q: What does the Chaffoteaux Complaints of noise (2) fault code mean?

Your boiler is making loud noises because trapped air bubbles are causing the water to rattle as it circulates through your heating system.

Also written as COMPLAINTSOFNOISE2 — same fault.

The Chaffoteaux Complaints of noise (2) fault code means: your boiler is making loud noises because trapped air bubbles are causing the water to rattle as it circulates through your heating system.. It appears on 2 Chaffoteaux models in our database.

Technical description: Air in system.

Typical repair cost £0-£90 (including labour)

DIY fix possible

Turn off your boiler and wait for the radiators to cool down completely.Use a radiator key to open the bleed valve at the top of each radiator until water flows out steadily with no hissing air.Check your boiler's pressure gauge and top it up to the manufacturer's recommended level, typically between 1 and 1.5 bar.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Chaffoteaux models that show the Complaints of noise (2) fault code

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

Source

Chaffoteaux Complaints of noise (2) 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