Product review (5 stars): We've had this dishwasher for about 10 years now and ...
We've had this dishwasher for about 10 years now and it's been extremely reliable.  Every so often you do need to clean out the screen.
If water ever builds up on the bottom, remove the screen and fish out the 2 plastic drain pump parts in tat well and clean those out.  Spin the small propeller in there as well.  It's described in the manual or search on youtube.