We purchased this 5 months ago but had to call for service.  I use the clean cycle everytime the machine shows it is needed but found reside in clothes. Did a cycle with no clothes and found debris in washer.  Serviceman stated this occurs in some washers and to put in bleach in it when using the cleaning cycle.  I have never had to do this with any washer before so I am disappointed but it does wash clothes well as I like that it has no center agitator.