Low
d.07 on Vaillant ecoFIT Pure 435

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.

Technical description

Set target temperature for the domestic hot water cylinder

DIY fix possible

Note that 'd.07' is an information code, not a breakdown faultPress the 'Back' or 'Menu' button to return to the main displayAdjust the hot water temperature dial if you wish to change this set point

Find a Gas Safe engineer
Search the official register →

Related fault codes

d.00View →d.01View →d.40View →

Related guides you might find useful

No hot water but heating works

Almost always a stuck diverter valve on combis.

Read →

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →