Low
D.83 on Vaillant Combi Compact 242EB

Your boiler is letting you know it has started up specifically to provide hot water to 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

Burner start up in hot water mode

DIY fix possible

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

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Related fault codes

D.80View →D.81View →D.82View →

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