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.

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.

What the manual says

Manufacturer manual

Set target temperature for the domestic hot water cylinder

From this model's manual
Verified against the Vaillant Ecofit Pure 830 installation & service manual, page 29.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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d.00View →d.01View →d.40View →

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