I have had good luck with adjusting the bi-metal catch on the soap cup. Remove the front panel (4screws ) POWER OFF. Then loosen the screw that holds the bi-metal in place, swing the soap cup and catch it. Move the bi-metal back until it barely catches,tighten the screw and that is it. Make sure the filter in the sump area is clear, the dishwasher soap cup works on the amp draw from the motor. If it is plugged or not enough water the cup won't open.