Product review (1 stars): Same Frustrating Problems As Everybody Else, And...
I have had the same problems with the machine as everyone else in these reviews, and have had the machine serviced more than four times in the four years we have owned the machine.  Another major problem with the design of this machine is the exhaust fan for the unit is located in the upper, posterior roof of the machine which means it exhausts deep under the counter top.  That probably explains why I have had the exhaust fan burn out and the machine leaves a lot of moisture behind when it finishes.  When the first repair person came out she dis-assembled the front door to get to the fan to replace it (she was unfamiliar with the unit as most dishwashers have the fan in the door to get the moisture and heat out of the unit).  When she could not find the fan she consulted the repair manual and discovered it was in the posterior roof of the machine, well under the counter-top and thus unable to vent properly.  A strange, unfortunate design error.

I should have consulted the Amazon reviews before buying a machine.  I have learned a very expensive lesson.