Hi
New to forum. Have a 500 twin air. Sounds as if there is something in the airways like a leaf when blower is on .
Any ideas on how to remove heater or sort problem
Had this on my 500, It turned out to be a paper label that had curled off the inside of the fan case and was clipping the fan. It was an absolute bugger to get to.
I've not looked on our 500L to see if it would be any easier to do.