Hi,
I need help desperately! I have an Alpha 280e boiler which feeds my excessively noisy central heating. I have replaced the divert valve as it was inoperative and I've also cleaned the heat exchanger. When I first refill the system and bleed the radiators, it's great, quiet, smooth hot hot water etc. After a couple of days however, the pipes start to thud or hammer repeatedly while the heating is on. This noise gets progressively worse until the noise is pretty constant while the heating is on. The only way to stop it is to drain the system and start again and again and again.... Also, once the knocking starts, the boiler swithes off briefly when heating the hot water leaving me with hot/cold/hot/cold water at the taps although the water pressure is constant.
Please help, I haven't had a decent nights sleep in weeks!
I need help desperately! I have an Alpha 280e boiler which feeds my excessively noisy central heating. I have replaced the divert valve as it was inoperative and I've also cleaned the heat exchanger. When I first refill the system and bleed the radiators, it's great, quiet, smooth hot hot water etc. After a couple of days however, the pipes start to thud or hammer repeatedly while the heating is on. This noise gets progressively worse until the noise is pretty constant while the heating is on. The only way to stop it is to drain the system and start again and again and again.... Also, once the knocking starts, the boiler swithes off briefly when heating the hot water leaving me with hot/cold/hot/cold water at the taps although the water pressure is constant.
Please help, I haven't had a decent nights sleep in weeks!