I have a problem with my CH whereby all of a sudden the heating wont come on at all when it should but the rads do get hot when the water heating is on .
The system is controlled by a combination of the above .
I changed the actuator because for a while the problem could be cured by giving it a good thump, but changeing didnt work so I changed the programmer ,which didnt help either .
Does the brass valve need changeing or could it jist be stuck and if so how can I tell?
The system is controlled by a combination of the above .
I changed the actuator because for a while the problem could be cured by giving it a good thump, but changeing didnt work so I changed the programmer ,which didnt help either .
Does the brass valve need changeing or could it jist be stuck and if so how can I tell?