High
216 / C6 on Worcester Bosch Greenstar CDi Compact

Your boiler has detected that the internal fan responsible for moving air is not spinning fast enough, causing the system to stop working to ensure safety.

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

Fan running too slow

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

C6View →

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