Why won't my upper arm spin? - Frigidaire 24 in. FDB635RF Built-in Dishwasher

Which one the upper or the lower spray arm? If the lower is spraying and the upper isn't.. Check the spout pipe to the upper sprayer arm, it is pluged. Or the sprayer arm is wore out around the fitting. GB...stewbison

Both upper and lower washing arms operate on the water pressure and angle of water flowing thru them.
Pressure provided by water pump.

Just about anything that contacts the rotating arm can stop it.
Best thing to do is re-arrange items in dishwasher so that arms can spin freely.
One can always spin washing arms by hand to ensure proper clearance.

Hope this helps...

Hi

Please check if something is blocked near the top spray arm, also make sure that all holes are oopen. Use a sharp metal pin to clean the holes on the top spray arm. Make sure the water pressure is not low.

under the screen and youl'll need a Torx driver to get to it after you remove the spray arm and screen. Check to see that the path it travels is clear. I have seen these get blocked up by stuff.

Now check if the top arm spins freely and check the bearings for the arm, if they are producing extra friction while the spray arm spins. Hope this helps... Please post back if you need more assistance.

Hi,

The most likely answer is that your upper rotor spray arm isn't spinning or spraying water. They aren't powered by a motor - they are driven by water pressure. The most common reason for them not spinning is a blockage somewhere. The lower rotor arm is spraying dirt from the plates in the lower rack onto the glassware and there is no spray from the upper rotor arm to rinse it off.

Check the small spray holes on the top of the upper rotor arm. If they are blocked, use a large pin or a cocktail stick to clean them out. If they aren't blocked, check to see whether the upper rotor arm is spinning by following these steps:

1. Note the exact position of the upper spray arm or spin it so that it is running precisely left to right or front to back
2. Close the door
3. Start any wash cycle
4 After it has finished filling with water and starting cycling the water, open the door and note the position of the upper spray arm again.

If the spray arm is in the exact same position as when you closed the door it's almost definite that it's not spinning. In this event, cancel the wash and do the above test one more time just to eliminate the element of pure chance.

Try the above tests and checks and then post back with the results if you need any further assistance. If posting back, please include the full model number of your Frigidaire dishwasher

Regards,
BElectric.

plugged spray arm holes, pump intake partially blocked, too little water getting in tub cuz screen in fill valve has debri

bosch shu5312uc upper spray does not spin. pours water through the center section thus not propelling the arm. any ideas? should the upper arm have any o-rings

Possibly, the intake screen under the lower arm is partially plugged. Take the upper arm off and inspect the holes for plugging and that the seam between upper and lower halves is not split. Our Maytag split the same seam--fixed by drilling a number of very small holes along the split and sewing it shut with fine wire.

have you checked to see if the arm spins freely if you push it

It seems other posts were correct - The upper arm doesn't spin all the time. Once I learned that, and let the dishwasher cycle through, I saw that the upper arm does spin. So, there wasn't a problem with the upper arm afterall. That doesn't solve my crusty dishes problem, but that may have something to do with the soap we're using. We're going to try changing that next.

possible ball valve problem