Product review (5 stars): Get it From Amazon Direct or Regret
First, contact the toll free number in the owner's manual to get the tech manual PDF emailed.  It has a much better troubleshooting guide.

The reason the rinse aid warning light comes on is because the rinse aid dispenser inside the machine is empty.  The owner's manual doesn't mention it.  Rinse aid is not required but recommended.

I ordered this from Amazon to wash the aluminum parts for the Inertia Nutcrackers I manufacture.  There are burrs on the aluminum after it is cut to size so I run them through a vibratory tumbler.

The tumbler solution leaves gunk all over the parts that doesn't easily rinse off.  So I ordered this dishwasher.

When I got it, none of the cycles would advance past the first pre-wash sequence.  The timer would just stop and it would go through pre-wash indefinitely.  After about 30 minutes it rinsed the parts well enough, but not I'd rather have a machine that works correctly.

The nice lady at Magic Chef had me forward my Amazon receipt before they would tell me where to carry in the dishwasher for warranty service.  So I emailed the receipt immediately.  An hour later they emailed me they would email me where to send it in the next 48 hours.  (Make sense?)

I seriously doubt there is a service center within 100 miles of here.  And I'd bet dollars to dog biscuits that it would take a week or two for them to get the parts in before they got around to fixing it.

I had a better solution; I contacted Amazon.  They are sending me out a replacement today so I'll have it in a couple of days and just box this one back up without leaving my office.

 I bought this on Amazon over the weekend for $259.  5 days later it is $290.

The reason I'm starting with 5 stars is because of the better price, fast Amazon service, and even hobbled as it is, it does what I need.