Its quite a big job you have to remove the condensing channel and fan housing.almost certainly be clogged. you could try running the rinse out fluff programme 3 or 4 times in a row but reckon it will need to be stripped down and a thorough clean, miele normally recommend changing fan and channel thus making the repair expensive.
Re.Spun
April 2009
I can answer this question...
How do i remove the fluf from a miele wt945 drying system?