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Dishwasher tub slowly fills with water after after completion

I have a Bosch dishwasher that is eight years old (model SHU9902UC). A few months ago I found clear water in the tub following a wash done the previous evening. I drained the tub by resetting the cycle as instructed in the user manual, but the tub gradually filled up with water again after several hours. This now happens after every few washes. When I turn off power to the dishwasher, the tub still fills with water. There seems to be a slow leak in the water intake valve, but I'm not sure why this happens only intermittently - that is every few washes. Do I need to replace the water valve? If so, what's the difference between the Bosch water inlet system (part No. AP2802392) and water valve assembly (part No. AP3783031)? Which part do I need? Thanks for your help

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  • Anonymous Mar 13, 2008

    is this valve open or closed when disconnected mine stays open and tub fills and floods

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  • Master
  • 640 Answers

The internal parts of the valve are sticking open randomley.the diaphram/piston in the valve most likley have lime deposits on it due to poor water quality.you would need the water valve assembly but before you buy this part i would look where the water line goes into the dishwasher and it will lead you to the valve.remove the valve from the unit and disassemble the valve.clean all the internal parts in the valve and reinstall.75% of the time this works ,if not change the valve.

Posted on Jan 24, 2008

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