Why does my dishwasher not wash correctly?
Checked water pressure-strong. Checked Temp 125 or above. Arm does not spin. It is always in the same position after each wash. Glasses are dirtier when finished than when started! Its a Roper dishwasher model RUD4000SB0, serial #FY3301274. It appears to me that there is not enough pressure to spin the arm and that is part of the problem. Do you have any ideas?
Joey s
Expert
If the dishwasher is filling with enough water and the pump does not develop enough water pressure to cause the spray arm to turn, the likely failure is a restriction to the pump impeller or a stripped impeller. I added some information in the images below. You will likely need to remove the pump and check for restrictions.
I recommend calling a service technician to diagnose and repair your dishwasher.
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