High
Burner goes out on Ferroli Sigma

Your boiler is struggling to stay lit because it is either dirty or isn't getting a steady flow of gas.

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

Insufficient gas supply. Boiler dirty. Burner or injector dirty. Faulty flow temperature sensor

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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