High Lockout
2923 on Worcester Bosch Greenstar 8000 Life/Style

Your boiler has detected an internal electrical communication error, which means it has stopped running to prevent damage to its electronic 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

Boiler electr. system fault

What causes this fault?

This fault occurs when the boiler's internal computer brain loses touch with the sensors and controls it needs to operate safely. It is usually caused by a physical break in the internal wiring or a critical failure within the main circuit board's memory. Because the different parts of the boiler can no longer 'talk' to each other, the system shuts down as a safety precaution.

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

2924View →

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