Upper arm is not turning during wash cycle, it spins freely and is not clogged. Supply tube is not clogged, I cleaned all debris from the system and it had no effect on the upper arm. The arm has water inside and water will flow from the spray holes with very little pressure. I removed the shroud from the circulation pump and the white wheel spins freely, should this wheel spin when moved by hand? Any ideas on next steps?
I wouldn't start at the wash/pump motor, not yet,anyway. I'm sure you've checked the filter(s) for debris and clogs and there are no detergent or hard water deposits on the screens causing improper water flow through the system. You should check and make sure the dishwasher is filling properly. low water level or slow fill will effect the pump operation and cause the upper spray arms to appear to be inoperable, make sure the float assembly moves up and down freely on the float guide and the water level should be equal to the bottom of the door(at least) after the dishwasher has filled and washed for 5 minutes.
Answered by AppliancePartsPros.com | Wednesday, April 24, 2013