I have hot water but cannot get the central heating to work. It clicks over and then either does nothing or goes on to F1. I can press the reset but it just doesn't seem to fire up!
Anyone any ideas.
I have all sorts of work done on it but still no luck :(
clean flame electrode with fine glass paper,look like boiler is over heating make sure pump is ok also fan at full running ,change over heat termostart there are two change both
