Low
S.06 on Vaillant Home System

Your boiler is simply running its internal fan for a few minutes to clear out heat or gases after a heating cycle and will resume normal operation shortly.

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

Heating mode: Fan overrun

DIY fix possible

Wait for 5 to 10 minutes for the fan to finish its cooling cycleEnsure there are no obstructions to the external flue pipeIf the code persists for over an hour, try restarting the boiler

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Related fault codes

S.07View →S.08View →F.32View →

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