the boiler is not heating up the radiators ,it seems like the pump wants to blow up ,it makes a awful noise as if it wants to blow up.Any anwers to help fix it
Once a pump starts screeching its usually curtains.It wont blow up,the worst outcome would be it blowing the fuse in the clock spur(if youve got one).Make sure the header tank is full of water as it may be running dry,but at worst it will need changing.Not too bad a job as long as it is valved either side.Get exactly the same diameter pump a grundfos is best and as long as the valves shut properly you should have it done in half hour and save a few quid.
