I have a Sime super 90 plus boiler. I had the exact same in my old flat and it was nothing but trouble. Just moved in to the new place and it seemed OK, although a little noisy. I believe the timer doesn't work. I set it at 8:00 yesterday morning to come on at 17:00 when I was due to arrive from work. The timer had moved to 10:00, so obviously no heating came on. Anyone had these problems or can suggest something. Also when I run the bath the hot only lasts for a few mins then it goes cold so I can only run ahlf a bath, but shower is constantly hot???