Low
D.8 on Vaillant Combi Compact 282EB

Your boiler is receiving a signal from your external thermostat or timer telling it to provide heating or hot water, and it is behaving as it should.

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

External controls heat demand

DIY fix possible

Check your external room thermostat or smart home app to see if heating is turned onVerify that your mechanical timer or programmer is set to an 'on' periodIf you do not want the heating on, turn down your room thermostat or adjust your timer settings

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Related fault codes

D.1View →D.4View →D.7View →

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