High
0A1 on Alpha Pro Tec 24

Your boiler is failing to light the burner, meaning it cannot provide you with any heating or hot water.

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

Ignition failure. Check for correct gas supply (purged and valves open). Check ignition electrode position and spark. Check flame sensing electrode connections. Check gas valve operation.

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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