Yes. There is one more way it is possible to wire, using a changeover relay, but it requires that your wiring centre that the valve is connected to having a permanent live connection. Unfortunately a permanent live is often not present at the wiring centre in old heating systems. This is avoids having to get an extra wire from the programmer to the wiring centre, if they are at opposite ends of the house. Any additional wires must be suitable for mains use and insulated and sheathed.
Having traced the programmers wiring loom, there was one unused wire in the same loom.
Which is now connected.
However, still no joy.
Measuring HW Satisified, when i move the manual level, well manually, I get the full 228V and the boiler starts, however if I let the triport do its thing, then it never exceeds 86V as it still isn't moving quite far enough to activate the micro switches.
86V means the hot water isn't getting the satisfied signal. The 86V is coming from the diode/resistors inside the valve, no satisfied signal is getting to it. If you don't have 228V on your new wire when hot water is switched off at the programmer, either the programmer is faulty or the wire isn't continuous. You did connect the other end of the unused wire to the grey wire of the valve I take it?!
If you can post some clear photos of the wiring centre we can see what is going on. Your valve is not likely to be faulty.
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