The lower spray arm in my dishwasher does not spray or tuen when running. I am not sure about upper spray arm. I also do not know how to get it off to see if it only needs a cleaning
Does the pump run or it’s just make a humming noise?
Does the dishwasher got enough water? Normally it suppose to be about a half of inch above the center of the dishwasher.
In order to remove the lower spray arm turn the pop up tower (on top of the spray arm) CCW and remove the screw in the center.
Gene.