I've had a couple of posts on here describing problems with my CH (many thanks to everyone who has replied.) However, without having time to sort any of it out, I have a new problem. I have a 14yr old Apollo Fanfare and initially my hot water was fine with the problem being only a few radiators were coming on; some were red hot, some were half/half and others were stone cold. Now, my hot water won't heat up but the damned CH is coming on virtually perfect; all rads on and nearly all very hot. Just can't get the water to heat up now. Only thing I've touched was the red wheel to on that seemed to turn the CH on fine. I've turned nothing off. (I didn't give myself this nickname for nothing you know.)