Hi, I had a Megaflow 170i cylinder and a Worcester system boiler fitted a few months back and for the past month or so whenever the hot water comes on from the timer there is a loud bang/pop kind of noise coming from inside the cylinder and it happens every few minutes for about half an hour. Its loud enough to be heard in the surrounding rooms.
Do you think the cylinder may have a fault, everything works fine no issues at all. I know they have safety features so that they don't explode but its still a bit worrying.
BTW I did regenerate the air gap but this made no difference. Only plus side I guess is I don't need an alarm anymore to wake me up in the mornings...
Thanks
Allan