Low
S.11 on Heatline Compact 24

Your boiler is currently preparing to ignite, but the internal fan is checking its position before the system starts burning fuel.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Pre-run fan

DIY fix possible

No action required; this is a status code rather than a faultMonitor the display to see if it transitions to a firing codeIf the code persists for several minutes, try a manual reset

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