High Lockout
2962 on Worcester Bosch Greenstar 8000 Life/Style

Your boiler has stopped working because the internal computer cannot communicate with the fan that safely clears away used gases.

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

No fan signal available

What causes this fault?

This fault occurs when the boiler's main control board loses its electronic connection with the fan motor, preventing the system from safely venting exhaust gases. The most common reason is a component failure within the fan itself, a loose connection in the wiring, or a fault on the circuit board that stops it from sending the correct instructions.

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

2963View →

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