Question about Frigidaire 24 in. FDB1050RE Built-in Dishwasher

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Frigidaire FDB740RCS0 Upper Armnot Turning

My dishwasher (Frigidaire FDB740RCS0) is 3 years old and upper arm does not get any water or turn.  Is this a problem with the pump or motor?  What is up as the top rack rarely comes clean?

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Re: Frigidaire FDB740RCS0 Upper Armnot Turning

Make sure the spout leading into the top spray arm is not obstructed at all. Maybe simplistic, but could be overlooked. Just thought I'd put it out there.

Posted on Jan 08, 2009

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Re: Frigidaire FDB740RCS0 Upper Armnot Turning

The motor stops and runs in the opposite direction to pump water up to the top rack. you first need to listen for the motor to stop and start. if you hear that open the door and try to tell if water was coming out of the top spray arm.

Posted on Nov 02, 2007

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1 Answer

Why won't my upper arm spin?

Good Afternoon Friend,

I understand that the upper arm is not spinning in your Frigidaire dishwasher, model# FDB635RF. First, check to make sure that your water pressure is between 30 and 120 PSI. If the water pressure is not good in the area your dishwasher is located, try not to use any other water in your home while using your dishwasher. Secondly, make sure that there are no tall dishes that could possibly be blocking the upper arm from spinning. I ask that you please follow up with a comment on the post, at your convenience, to advise if further troubleshooting is needed or if your dishwasher status has changed successfully. Hope this is helpful.

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My Frigidaire dishwasher upper sprayer arm is not rotating. Can't figure out why?????

Over time, dishwasher spray arms can become clogged with minor debris or hard water buildup that can prevent the arm from turning properly. An easy suggestion is to apply rinse aid to the junction between the spray arm and the mount to help remove it. Try this tip first to see if it resolves the issue. - Best of luck!

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The top shelf is not getting clean. There is food residue on the glassware that was not there at the start of the wash.


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


Dec 14, 2010 | Frigidaire Professional Series 24 in....

1 Answer

Apparently no water pressure to upper washing arm.

Hi sounds like there is a blockage in the circulation pump which causes low water pressure as it cannot push the water around. You would have to remove the unit and turn on it's side and remove the circulation pump to clear the blockage.

Also check all the holes in your spray arms for any blockages. Best to remove each arm and clean in the sink. Any blockages causes the arms not to turn.

Jan 24, 2010 | Frigidaire Dishwashers

1 Answer

Frigidaire dishwasher - upper spray arm trouble?

I do not have a problem w/the upper arm not spinning. Rather, the upper arm keeps falling off of my frigidair dishwasher. The owner's manual suggests the upper arm is a single unit. However, the upper arm component is comprised of 3 parts. The parts are an arm that distributes the water, the base that screws to the top of the dishwasher, and a small plastic type washer that rides in the base and literally holds the arm to the base. The plastic washer has two small clips that tend to wear or contrast with age; thus letting the arm fall off on a very frequent basis.

Potentially, the small plastic washer piece may have broken in the base assembly and is not allowing the arm to turn. As water flows into the arm from a hole in the base; suggesting the plastic washer may be jammed with a foreign item seems less likely. The base unit screws to the top of the dishwasher and can be removed by hand (the base is a little tight). There are no mechanical pieces to my third (upper) arm; movement of the arm is accomplished with water flow.

You may wish to remove the arm assembly and check for a broken washer or a foreign item in the assembly. As a side note, I found that I can unscrew the base and remove the assembly without removing the top dish tray. The fit is a little tight but the tedium of pulling and reinstalling the top tray can be eliminated by unscrewing the assembly w/the tray slid forward for assembly access.

Hope all you have is a foreign item that is locking the washer.

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1 Answer

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Dig deeper, until you find filters. Those are probably clogged. You may need a screwdriver...

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Upper arm does not spin

No I don't believe its the pump. I believe the lower spray arm is possibly split open on the side causing a loss of presure and flow to the upper arm and overloading the door seal. As well the loss of flow to the upper arm will resulted in it turning too slow.

Aug 12, 2006 | Frigidaire 24 in. FDB635RF Built-in...

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