High
314 on Worcester Bosch Greenstar 12i System

Your boiler has lost its electrical power connection while it was trying to protect itself from an internal error, meaning it needs a manual reset to get back up and running.

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

Mains disconnected during super lockout

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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