Recent content by timace2

Just been an bought a new 22mm mid position valve, thanks for your advice. :)

Yes, constant switched on for C/H and stat on max - boiler not firing up no C/H but checked supply and both S Wires live now, the only way to get heating to work is to manually activate valve. Does this suggest valve US?

Hi, my heating system does not work, the boiler fires up and heats the water only. If the room stat is turned up to induce the heating to come on nothing happens, the stat is functioning. If the Honeywell Sundial Y valve is manually moved to the other position the heating comes on. Am I right...