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No, this one has a N block on the left and an Earth block on the right most. In between it has: A, B, C, D, N, L, 1, 2, 3, 4, 5 A,B 1,2 and 5 don't have any wires connected. I think this must be one of the first models from the 80's!!

Firstly I have gone through all the related posts and now more confused!! Has anyone attempted to do a similar replacement? I have opened the EP2000 programmer and drawn the existing connections and also same with the white connection box near the 2 valves so I can go back if necessary!! I...