Lee for Model Number PPW7800GOOWW Thanks for the answer above, but I did check the center wash arm for clogs, none there, water will flow freely if it gets there. The curious part of this is that the upper smaller wash arm spins like crazy, so it seems the water is flowing up the feed line in the back of the dishwasher...but the center arm does not spin...HELP. It seems an impeller replacement would be a waste, since the uppermost arm is spinning...does the water go to the upper arm first? I does not seem all that sophisticated, if the upper arm gets water shouldn't the middle arm get water also?
Answer Hello Lee. You will need to check and make sure the fine filter and all the components are clean and clear on the sump assembly, and check the impeller and see if it is bad. Actually the water travels up the manifold and would spray at the top with force, then the pressure is built to spray out of the middle with force. If there is not enough force, the middle spray arm WD35X10054 is larger than the top and would not have the force like the top spray arm would have. It sounds like a filter or water issue inside the dishwasher. Hope this helps. Read More... Answered by AppliancePartsPros.com | Friday, March 2, 2012