new condensing boiler fitted, pump, cylinder, rad stats all new, when starting up tremendous noises from boiler, rads, pipes, banging, clattering
gushing, buzzing the lot. This has been going on for 7 weeks, fitter at a loss, we've bled rads about fifty times, had pump on all speeds, drained down twice. We have to turn it off when starting up and restart later, neighbours must be fed up as we are ,please advise.