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LOL... :lol: My mistake, i've just been and checked i did connect HW off to the grey wire, I must of just typed Orange. The wiring is that much of a rats nest its done my head in. Yes, there are actually 3 lives, but i was only counting control wires. It was the honeywell diagram i was...

I have connected a wire between HW OFF on the programmer and the orange wire, and everything seems to be working perfectly. I have tested that cyl stat, and room stat, control, and they do. The 3 way valve moves to the position you expect also. I've got to say a big thank you to...

Hmmm, i think i may connect it up and see what happens. I have been checking the diagram you recommended, and all else seems okay, but i have noticed that my BAXI solo 2 PF boiler has a Live feed for a pump, and also a SL (switched live) to fire the boiler ( i presume). The diagram only...

I have been checking the wires/colours in the whole sytem to see what goes where, and there is no HW OFF wire connected to the programmer. There is only a red wire connected to the HW ON terminal, and a Yellow wire connected to the CH ON terminal. I have printed the Honeywell diagram...

I am quite good (electronics engineer). So is it as i thought, that you should be able to put the CH on, without the HW? Any suggestions?

I have just found this great forum while searching the web for answers. We have recently moved house, and i have noticed that when i set the timer (Drayton TEMPUS 7)for CH nothing gets warm. If i set the HW and CH to come on at the same time all seems okay. We have a gravity fed system...