yes in seconds
the one pipe is too hot to touch and stays like that the other pipe is not as hot but also stays the about the same then the boiler starts again.
It is not always the same, sometimes the pipes cool right down and the boiler will not heat up for most of the day.
the pump is working
ok, the plumber has been a few times and has spoken to glowworm who suggest they see the boilerm
if it is a good day the boiler will fire up frequently and heat all the radiators but on a bad day the rads remain lukewarm at the top ans some dont heat at all
no but i will give it a try. if it is a pump problem why would that cause the temp drops and the random working of the boiler
ok many thanks for your time