Question about Frigidaire 24 in. FDB421RF Built-in Dishwasher

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Frigidaire FDB421RFS3 Dishwasher:No water sprays through top arm

Water flows through the bottom arm allowing it to spin freely and clean dishes. However while running, I observed that the top arm receives no water at all. There were no clogs in the upper arm supply tube and the motor-pump seemed to run adequately. From what I've read, the motor-pump supplies both lower and upper arms with water by intermitently operating, allowing a check ball to alternate positions between both inlets.

Any ideas on the problem and solution ?

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  • ike81 Oct 19, 2008

    Water flows through the bottom arm allowing it to spin freely and clean dishes. However while running, I observed that the top arm receives no water at all. There were no clogs in the upper arm supply tube and the motor-pump seemed to run adequately. From what I've read, the motor-pump supplies both lower and upper arms with water by intermitently operating, allowing a check ball to alternate positions between both inlets.

    Any ideas on the problem and solution ?

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6 Suggested Answers

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Posted on Jan 02, 2017

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Anonymous

  • 11 Answers

SOURCE: water not going through spray arms

1.does motor run? no. replace motor. 2.open door and leave the bottom rack inside dw.spin the spray arm underneath the bottom rack by hand. it should spin freely without binding. if it doesnt spin freely take out the bottom rack and try again. if it does spin freely then your bottom rack is laying on your sprayarm preventing it from rotating. 3.you could also not be getting enough water into your dw.

Posted on Mar 22, 2007

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Anonymous

  • 1 Answer

SOURCE: water not going through spray arms

Have same problem except big motor spins independent of stripped? impeller. tried to reassemble but seems mechanical or adhesive agent misssing from one shaft or the other and the motor spins the impeller (now tight) only to have it slip off again and stop pumping water.

Posted on Feb 04, 2008

Anonymous

  • 290 Answers

SOURCE: dishwasher - no spray arm action

If it is filling with water properly then it sounds like the chopper screen is clogged so that water isn't getting into the pump. You can remove the top of the pump housing and get to the screen and chopper blade to inspect it. Go to sears.com, click on parts and enter your model number and you can view a diagram of the pump parts to help in disassembling it.
If the pump is not clogged then you have a problem with the impeller or motor. If this is the case you can replace the entire sump assembly just about as cheap as replacing individual parts of the pump.
Post back with any questions.
Thanks, Mike

Posted on Feb 16, 2008

Anonymous

  • 1 Answer

SOURCE: Dishwasher upper arm does not spray

possible ball valve problem

Posted on Jan 03, 2009

Jeff Meyer

  • 423 Answers

SOURCE: Frigidaire Dishwasher - Spray Arm Not Working

When a dishwasher has been checked for obstructions in the sump area and the spray arms can spin easily (by hand) plus the spray arm holes are not blocked, you end up with either a broken impeller or a failing wash pump motor.

If you would like more details of have more questions, please post comment back here, OK?

Good Luck!

Posted on Apr 26, 2009

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