graham1

Radiators are on ground floor. It is a completely new installation. including piping and radiators. Has had problem since start and installer changed valve motor. Not sure if this is the way to respond messages - if not can you direct me in the right way?

Installer has just fitted a new 3 way valve but still the same problem - when DHW is on 2 radiators heat up to much hotter than when heating is running. This is a new installation not yet signed off. Is there any other cause for this except faulty valve?

I introduce myself as a newbie ASHP user. I have various questons but will wait until I have access to forum