I have a two year old Vaillant Ecotec.
I was outside just now when it started making a low-pitched resonant noise, a bit like someone playing a didg., which lasted for about ten or fifteen seconds. There was no wind.
Any ideas?
Get the kids out of the house immediately, Rolf Harris is hiding in a wardrobe :)
Not funny. In any way at all.
John
He was only kidding
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