first the heat worked not water then vice versa, then would work after a while, almost like an air blockage. now neither work at all. now pilot light won't even come on. has had new fan & new circuit board thing, bled radiators etc nothing. its 13yrs old.
The expected life of a combi boiler is approx ten years its is probably better to replace than repair a boiler of this age! of course it is possible to fix anything if parts are available it is not always cost effective though.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.