Ok so I have an identical machine, and after many months of poor drying tried this and exactly the same , the fan impeller was totally clogged !! Are all washer driers prone to this , or is it a particular issue with this machine?
if this is an issue then a user cleanable filter should be installed , I'm gong to need to be doing this every year or use a separate dryer .
Does anyone know of an easy solution as I had to remove all the top ducting and control panel to access the fan. I wpold say beyond the skill set of most users .