Low
D.71 on Vaillant Combi Compact 242EB

Your boiler's heating temperature dial is set to its maximum power level, which is more of a status notification than a dangerous 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

Maximum setting of heater control knob

DIY fix possible

Locate the radiator temperature control knob on the front of the boilerTurn the knob slightly counter-clockwise away from the maximum settingCheck if the display changes to show a different numerical value

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Related fault codes

D.70View →

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