I have a fully pumped CH system with 2 motorised valves, one for CH and one for HW. I preparation for getting a new HW cylinder fitted I was sorting out and rerunning the cables in the airing cupboard to tidy them up. I made a note, or thought I had, of the connections in the junction box. The HW now isn't working. I have opened the valve manually to get some HW. CH is ok.
Can somebody point me to a wiring diagram for a 2 valve pumped CH system.
Thanks
Kevin