High
C1 264 on Worcester Bosch Greenstar CDi Compact

Your boiler has detected that the internal fan responsible for venting exhaust gases has stopped working, so it has safely shut itself down to prevent any unsafe operation.

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

Airflow stopped during operation Fan has stopped.

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 →E9View →

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