Emergency
BURNER STAYS ON on Chaffoteaux Britony II 30FF

Your boiler's internal burner is failing to switch off even when you are not using hot water or heating, which suggests a mechanical component is stuck or blocked.

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.

What the manual says

Manufacturer manual

i) Air in pipework, ii) Gas valve stays open, iii) Venturi blocked, iv) Dirt on gas valve facing, v) Loose jumper on house stop cock tap, vi) Dirt or foreign matter in water section

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.

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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