Emergency
F14 on Saunier Duval Themaclassic Plus F30E

Your boiler is struggling to control the internal fuel supply, which means it will remain locked out and unable to provide heat or hot water until a professional inspects it.

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

Gas valve control fault

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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Related fault codes

F1View →F13View →F2View →

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