Hi David, many thanks, that link is very useful and I see what you mean about the timer. I will have to check which one it is and see if I can work it out myself. If not I may come back to you if that is OK?
Thanks again for taking the trouble to respond to my post.
Doreen
Hi David937. Many thanks for the link but that just takes me to the installation and service manual, which I already have. What I need is a user manual so I know what each of the lights and knobs mean and also how to set the timer.