Low
D.22 on Vaillant Combi Compact 282EB

Your boiler is signalling that it is currently busy preparing or providing hot water through 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 demand

DIY fix possible

Check if any hot water taps are slightly open or drippingEnsure there are no leaks in your hot water pipeworkTurn off the tap and wait for the boiler to return to its normal heating mode

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