Emergency
Excessively noisy burner (1) on Chaffoteaux Flexiflame 140

Your boiler is burning fuel at an incorrect rate, which is causing the loud noise and indicates the mixture is not balanced correctly for safe operation.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

Engineer required

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

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