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Thought I had a problem with the spray arm or pump because water was not flowing enough to spray the upper rack. But it turned out it was a simple part missing: the "check valve" that is in the lower neck of the spray arm assembly. It's a $10 part. Part #WD1X5488 for GE Potscrubber 600.
If this is a GE or Hotpoint dishwasher the solution is fairly easy, but a pain. GE (Hotpoint is the same company) has been using a small plastic ball that prevents backflow of the water. A lot of times that ball migrates and doesn't allow the dishwasher to drain. To get to this, you need to remove the two 1/4 inch hex head screws in the food trap basket, the 1/4 inch hex head screw from the spray arm, and use a small screwdriver to pry a clip at the back of the spray arm up to remove the spray arm assembly. Siphon as much water from the dishwasher as possible because you'll be opening up the plumbing below. Turn off your electricity to the dishwasher and pull it out of the cavity. Directly behind the motor is a large manilla-colored "tank" with a large hoseclamp holding a white union with two smaller hoses coming off it. Loosen and remove the white union from the large tank and the ball should fall out. Replace the white union, tightening the hose clamp and drop the ball back into the tube on the left side of the food trap basket. Put it back together and test run.
GE Dishwashers are equipped with an anti-syphon ball that generally dislodges itself and goes into the drain line. To remove it, you'll have to pull it out of it's hole. Turn the supply off and open the kick plate. Remove the supply line from the dishwasher and the drain line free from the air gap. Remove the two screws that hold it to the counter top and pull it out. Remove the lower rack and spray arm. To remove the spary arm you have a 1/4 inch head screw to undo, and on the back of the spary arm is a plastic clip. Use a small screwdriver to depress from the spray arm and pull the spray arm off. There are then two 1/4 inch screws that hold the food screen on and remove the basket. Now, underneath the dishwasher is a large manilla-colored hose with a large hose clamp that must be loosened. Pull this loose and a bit of water as well as the ball will come out. Reattach and drop the ball into the left hole under the basket. Reconnect everything and slide the dishwasher back in. Reinstall drain hose and supply line. Turn on supply. Run and look for leaks.
We have a PDW7800J01WW that I removed all the arms on recently. There is a single hex-head screw that acts as the pivot at the center of the top most arm. Just remove this screw to remove the spray arm. Be very gentle reinstalling it though as it is easy to over torque it and strip the plastic hub it screws into.
Some spray arms out there are reverse threaded, however the one that you are dealing with should be regular threads. Should be an opening at the very bottom of the spray arm where you can stick a screwdriver through and use both hands(one on each end of screwdriver) and carefully loosen it. Make sure you get the new one on as tight as you can by hand, then check to make sure its tight by using the screwdriver again. With the screwdriver through the hole, and one hand on each end of it, just apply pressure clockwise, but you do not have to force it. Hand tight plus an ever so slight turn with the screwdriver should do it. Don't forget that anytime you are replacing the spray arm, you must always check once the new one is in place that you do not have a leak underneath the dishwasher. Also remove all water before you start replacing the spray arm to prevent water from leaking once you break the seal when loosening the spray arm.
Dear friend,
ngfam at you service! happy to assist! this takes experience and tech knowledge! You have atop of the line dishwasher and its not easy to repair this hi-tech GE Profile machine, better left to the service tech.
We sell appliances for 65 years and I recommend this nation wide Factory repair service!
Call A&E Factory Service /They service nation wide
And are available 24/7 for making appointments!
If the appliance is 10 years old or more,it may make sense not to invest any money to fix it!
Happy to assist you,
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