Low
S.20 on Vaillant Combi Compact 282EB

Your boiler has detected that you have turned on a hot water tap and is currently preparing to heat the water for you.

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 requirement error

DIY fix possible

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

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Related fault codes

S.10View →S.14View →

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