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Hi all, Hoping there is an expert here able to help with weird CH and mid-position valve issues. Setup: Y-Plan with Honeywell ST9400 controller, mid-pos valve and cylinder stat. All these items are new. I replaced everything from an old Potterton controller which had the same problem. I...

Hi all, I have an existing light switch for the back garden electrics (nothing there at the moment). Just a normal switch inside the house. I am planning to run some small lights around the garden and am also thinking of installing an outdoor 3pin outlet as well. This would be used mainly...