High
Ignition fault on Saunier Duval Themaclassic Plus F30E

Your boiler has failed to light the flame needed for heating and hot water, so it has safely shut itself down.

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

The green running light will change to a red flashing light and the display will flash the letter ‘F’ (as shown in diagram 8).

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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Related fault codes

F1View →F4View →

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