High
Ignition LOCKOUT on Potterton Performa SL HE 9 2

Your boiler has stopped working because it failed to light the flame, which could be due to a simple issue like a gas supply problem or a fault with the internal ignition components.

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

Manual Lockout. No gas supply, reversed polarity, gas valve lead continuity fault, spark generator fault, electrode damaged/gap incorrect, or flame detection fault.

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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