High
E23 on Ariston Genus Premium

Your boiler has stopped working because it cannot correctly detect if the burner is lit, likely due to a faulty or damp electrical sensor inside the unit.

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

Flame detection electrode short-circuited

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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