3 way valves

frslam

Hi, I have an IVT  HT+ E7. Last September (2024) I noticed the flow to the UFH was getting hot when the Heatpump was heating the DHW. I opened her up and saw the 'disk' on the 3 way valve just turning slowly. It wasn't stopping at one particular outlet, just kept turning. Not sure if this was a micro-switch problem inside the motor. I fitted a new motor, the valve body is original, was changed a few years ago. 'ALTO Energy' telesales advisor told me the easiest way was to unclip/clip on the new motor to the valve. Now today I've just noticed this one is doing the same thing. Can someone kindly advise me, is it likely a fault in the valve motor or could something else be causing this to happen? Thank You very much. Very informative Forum!

frslam

If anyone wants to see what I mean, I uploaded a video showing the problem to https://www.glenhaultin.co.uk/motorised-valve.mp4