Low
D.97 on Vaillant Combi Compact 282EB

Your boiler has entered a specialist diagnostic mode usually reserved for engineers to perform advanced testing and setup.

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

Activation of the second diagnostic level

DIY fix possible

Press the 'i' button to exit the diagnostic modeTurn the boiler power off at the fused spur switch for 30 secondsTurn the power back on and wait for the boiler to return to its normal display

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