High
Does fan run? (NO) on Saunier Duval Xeon 30ff

Your boiler is failing to start because the internal air extraction fan, which is essential for safe operation, is not receiving power or has stopped working.

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

Is there 230V~ between motor connections on fan? If YES, replace fan. If NO, isolate electrical supply and test fan harness continuity. If satisfactory replace printed circuit board.

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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