Emergency
F16 on Saunier Duval Themaclassic Plus F30E

Your boiler is detecting a flame inside even when it is supposed to be turned off, which is a safety issue that requires the unit to shut down to prevent potential gas build-up.

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

Flame detection fault (parasite flame)

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 →F4View →F14View →

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