Medium
8.13 on Chaffoteaux Britony II 50FF

Your boiler is struggling because it has detected air or built-up debris circulating inside it, causing loud banging or kettling noises.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

Heating Body Noise

From this model's manual
Verified against the Chaffoteaux Britony Ii 30ff installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check your boiler pressure gauge to ensure it is between 1 and 1.5 barBleed all radiators in the house to release any trapped airEnsure all thermostatic radiator valves are fully open to allow water to circulate

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Related fault codes

8.12View →8.14View →

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