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HW off now wired correctly, everything working as it should. Case closed. Thanks all.

Hi guys As suspected we are missing a HW off from the controller but everything else is correct, fully explaining what is going on. We were defiantly getting A LOT of water to the rads previously in HW only, but to be fair, the controller was also set to 'linked' mode so I suspect the CH...

Thanks for the help guys, much appreciated. Will compare our wiring diagram with a working diagram tonight and I suspect carrying out further tests. We are for sure missing a HW off from the controller and can't remember off the top of my head where the tank stat off was wired to. At this...

Ah, yes, you are correct in that there is no CH or HW "off" wired in on the back of the wall plate. However, when the control panel was on gravity system, with HW on only and cylinder calling for heat, the 3WV was diverting to both tank and rads, not just tank...?

Hi Guys Myself and my Dad have had a search around here and found a few relevant posts but I am hoping a heating engineer may be able to confirm our issue. Brother recently moved into a house with a vented and fully pumped CH and HW system complete with 3 way valve. On initial...