URGENT Loud noise coming from boiler

[Anthonyj1983]

Hi I've not long trained in Gas and have come out to look at an ideal boiler. There is no noise when the boiler is on until the heating is put on and then there is evey now and then a loud vibrating humming noise. What could this be please? Thanks

 

[Scott_D]

Have you checked the basics?

 

[ShaunCorbs]

Could be anything overheating, dirty, broken flap, gas ratio

 

[Deleted member 120897]

Ideal also made one or two boilers - any more specific?