High
HEATING BODY VOISE on Chaffoteaux Britony II 40FF

Your boiler is making loud banging or whistling noises because internal components are likely clogged with limescale or struggling with water flow, which can cause the system to overheat.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

i) Scale (Descale heating body), ii) Excessive gas, iii) Insufficient water flow

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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