High
Red light flashing (Lockout) on Potterton Prima 30B

Your boiler has failed to start the fire needed to heat your home after three attempts and has safely shut down to prevent gas leaking.

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 after three attempts

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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