Bosch washer dryer WVG3046SGB dryer issue

[mrzach2010]

I have just acquired this machine which is 2 years old. Im not sure when it was last used. When checking the dryer program it immediately blew a load of white/dark grey kind of grit mixed with sand into the door gasket. I've taken the top of to inspect and noted it has a kind of white furry powder stuck around the fan housing, looks very much like when a battery leaks acid and it firs up. I really don't want to strip the dryer part as I know how difficult it is to take apart. 

Any advice appreciated please as what it could be and whether I should inspect further. I am guessing maybe it's just a build up of lint etc?

Edited July 15, 2019 by mrzach2010

[Whitegoodshelp]

Hello. It sounds like it may have well just be dried lint. I would clear as much of it away as you can manually and run it through several drying cycles to see if you can get rid of it. Remember to leave the cold water supply turned on when using the drying cycle as the dryer needs it to condense the water. I would also try washing a few loads on a 60° wash cycle to help clear everything out.