Low
D.41 on Vaillant Combi Compact 242EB

Your boiler is displaying the current temperature of the water returning from your radiators rather than indicating a specific fault.

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

Return temperature actual value

DIY fix possible

Check if the heating or hot water is still working as normalPress the 'i' button to exit the diagnostic menu if it was pressed by accidentMonitor the boiler to see if the code changes to an 'F' (Fault) code

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Related fault codes

D.40View →D.0View →D.1View →

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