What is causing the fan on the Dimple WHT20 to hummmm loudly?
I have had my Dimplex WHT20 for a little over 20 months and for the past 5-6 weeks a rather annoying humming sound appears to being emmited from the fan. It is now loud enough to have become a distraction and has resulted in the fire being turn off more than on.
Any idea please.
Mike, May 2013