High
SAFETY LOCKOUT on Potterton Performa System HE

Your boiler has detected an internal safety issue and has shut itself down to prevent damage, meaning your heating and hot water will not work until it is reset or repaired.

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

Lockout LED flashing once a second

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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