Same thing happened with my Kenmore. Water would fill the base but would not spray. Wash cycle would complete without washing dishes. I unplugged the power cable to the large pump and attached my volt meter. Then started the wash cycle and when the pump should have come on I measured 120V, so control board was working and it indicated the pump was not working. I pulled washer out and flipped on its back to remove the pump. just 3 screws. I found that the screen on the pump had come apart and caused the pump to jam. I removed the filter and put the pump back on to test it. I ran wash cycle and the pump worked and water sprayed. I would not leave with out filter to wash dishes as it cleans the water during wash cycle. I ordered $60 filter to fix problem instead of $300 pump.