KitchenAid Superba Dishwasher flashing Child Lock

Hello All,
I have a KitchenAid Superba dishwasher model KUSD24SEBL2 that has a odd problem during the wash cycle. It reaches a point where the washing stops and the child lock light starts flashing and the normal wash and sani-rinse lights (previously on)go out. The child lock light flashes for about 50 to 60 seconds, then stops and the normal wash and sani-rinse come back on solid and three second later you can hear the pump and sprayer arms going again for about 30 seconds. It repeats this cycle seemingly forever until I open the door.
Some observations are and guesses are:
1. When I open the door there is only about 1 inch of water in the botton of the washer. Is that sufficient for washing? Wonder what would happen if I poured a gallon or so of water in and closed the door?
2. Maybe the brains/sequencer is shot?
3. Could the filter be clogged?
Any thoughts would be greatly appreciated, Thank You, Bob
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