High
13 on Worcester Bosch Greenstar CDi Compact

Your boiler has experienced a power interruption following an earlier internal safety shutdown, meaning it has now locked itself to prevent operation until a reset is performed.

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

Locking Mains voltage interrupted after locking error

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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Related fault codes

EAView →D1View →12View →

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