Just an update on this.
The noise seems to occur shortly after the hot water taps have been on. I don't know if this will give anyone any clues as to what the problem is?
Thanks
Hi All
I have recently had my boiler serviced and explained to the engineer that it has been making a loud buzzing/humming noise at times when the heating is on, can last between 10 seconds and a few minutes at a time. The only way to stop the noise is by turning the boiler off or turning a...