I have two 5 wire (earth,white,orange,yellow,blue) 22mm satchwell sunvic "motor on" "motor off" valves which have given up the ghost on my heating system. The replacement valves are Sunvic spring loaded 4 wire models (grey,blue, brown,orange) can anyone help me out with regards to what wires now go, in place of what is there at the moment. Any help appreciated.
Regards
Fulchy
Regards
Fulchy