Low
d.07 on Vaillant ecoFIT Pure 425

Your boiler is displaying the current temperature setting for your hot water tank rather than a fault code.

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

Set target temperature for the domestic hot water cylinder

DIY fix possible

Press the 'Menu' or 'Back' button to return to the main displayRotate the selector dial to adjust your desired hot water temperature if neededWait a few seconds for the display to return to the standard operating pressure or temperature view

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