Change Pump Speed on Valliant Eco Boiler

[DanielleAK]

Hello

we have a c15 year old Valliant eco boiler. A few of our radiators were not working and the plumber turned the pump speed up to 100%. Unfortunately the boiler is now too noisy and I would like to turn it back to Auto or 85%. I navigated to menu d.15 but pressing - or + are not responding and I am unable to change to setting. Can someone kindly help me in how I am change the settings - I assume I need to press a button combination to enter update mode? Thank so much

 

[CBW]

Are you sure it was the pump speed that was altered? Can you post a photo of the boiler front? D15 is actual pump stepped, non adjustable.

 

[DanielleAK]

Thank you this is the screen shot of d.15. The plumber definitely mentioned pump speed - however, we do live in the Netherlands so maybe it was a translation issue.

 

[CBW]

Could be translation issue. Have a look at D.0, see what that’s set to.

 

[DanielleAK]

This is menu d.0 - part load