Low
S.25 on Vaillant Home System

Your boiler is briefly keeping the pump running to cool down internal components after providing hot water.

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

DHW mode: Pump/fan overrun

DIY fix possible

Check if hot water is still being produced normallyWait a few minutes for the status code to clear automaticallyNo action is required as this is a normal operating sequence

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Related fault codes

S.05View →S.24View →S.20View →

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