heating will not come on?

Have you checked the pump

Peter
January 2009

if the answer above hasnt worked do your radiators need bleeding?

Andy
January 2009

I dont know your type of boiler or system, but it sounds like your 2 way valve. Does it have a lever on the side? If it does give it a push, does it now heat the other pipes? if it does the valve is shot. there are 2 ways of thinking is it mechanicley shot or is its electicaly shot, if by moving the lever it works, you can replace the gubbins with out distubing the plumbing

Colin
January 2009