Low
S.24 on Vaillant Combi Compact 242EB

Your boiler is simply letting you know that it is currently busy heating up water for your taps.

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

Hot water operation burner is on

DIY fix possible

Check if a hot water tap is currently turned on elsewhere in the houseEnsure any mixer showers are fully turned offMonitor the display to see if the code changes once the tap is closed

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Related fault codes

S.20View →S.21View →S.23View →

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