Biasi boiler making banging, whistling noises

Hi Guys,

My Biasi Combi boiler is making banging, whistling noises. Central heating works properly, but when it comes to hot water it comes in waves hot/cold, hot/cold. Noise is being observed only when there is a demand for hot water. What is the issue?



Hi Oliver,

I think detail investigation is needed. You should contact GasSafe Registered technician, as it may be a pump, burner/igniter issue or even PCB. GasSafe technicial will be able to tell after 5 min what’s wrong and you end up replacing only this part which is faulty, not all the parts that may be faulty. At the end it is probably cheaper solution