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I can get one - I leave electics to my father as I am colourblind, but I should be able to work that out. Thanks, there are 4 wires on the motorised valve which 2 should I test for power? Thanks, Darran

Hi first time posting, but have used the site a lot in the past for fixes. I work in IT so terminology may not be correct. Can see a solution for this one so.... Background: My central heating system has a controller with 3 separate clocks, downstairs, upstairs and water cylinder. Upstairs...