The valve only opens if I use the fused switch. It used to work fine with a programmer, stopped working, so I changed the motorised valve and timer but still no luck.
I have a simple set up with a programmer opening a motorised valve/actuator to operate the central heating. Recently the heating stoped working. The valve still open scans closes correctly but I replaced the programmer - connections were the same as the old one (N L 3 4). I get the heating to...