Recent content by rufusfrog

Sorry I accidentally used Facebook account to log on earlier. Can finally show the awful wiring (th numbers I added to map the pins used to the right ones!)

In the next of my attempts at I have moved the grey wire from the central heating valve from the switched live to the permanent live (where it should have been all along according to the diagram). Now the system appears to be working correctly...

Thought I said: boiler, programmer, room stat were installed 4 years ago. I haven't noticed the problem before but that doesn't mean it wasn't there. We used to have two radiators without stats - a towel one in the bathroom and a normal one in the hallway and it never felt ridiculously hot...

System is S-plan wired with 2 Honeywell motorised valves. Boiler is Vaillant Ecotec condensing. Central heating is pressurised system but hot water is open vent with conventional hot water tank. Programmer and room stat are standard Honeywell digital models. The boiler, programmer & room...