High
215 / C6 on Worcester Bosch Greenstar CDi Compact

Your boiler has detected that the internal exhaust fan is spinning faster than it should for safety reasons, so it has automatically shut down to prevent potential issues.

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 fast

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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