Low
S.27 on Vaillant Combi Compact 282EB

Your boiler is briefly running the internal pump after you have finished using hot water to safely cool down the heat exchanger.

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 overrun

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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Related fault codes

S.20View →S.28View →

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