Low
d.06 on Vaillant aquaPLUS

Your boiler is displaying the temperature setting you have selected for your hot water, rather than an actual error.

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

Target value for hot water temperature

DIY fix possible

No action is required as this is an information code, not a fault.Adjust your hot water control knob if you wish to change the target temperature.Wait for the display to return to the standard pressure or temperature reading.

Find a Gas Safe engineer
Search the official register →

Related fault codes

Related guides you might find useful