Nature of fix would suggest lint build up occurs in an inaccessible place
and also suggests checking replacement machine on the list, and maybe that it carries a green(- fixed) sticker -
we did not yet do this
I don't know if there is a lint full optical detector/interlock - they spend money on having a pump to push condense up to waist level container instead.
... also criticism that no independent body has analysed the problem (although less important, don't think VW had to open their doors either - self regulatory)