Question about Frigidaire 24 in. FDB635RF Built-in Dishwasher

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Mine is a FDB635RFS4 model - issue is loud screeching noise

Hi - bought in 2001. very few issues although getting noisy last year or so. Suddenly water in basin, but loud screeching noise, varying pitches when it should be at the spray arm washign stage. Sound like plastic or other material "binding"
Can you suggest what I should look for? Thanks.
Maggie (elfin0505@yahoo.com)

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  • motretu Jan 06, 2009

    i recently had the same problem of a loud screeching noise. my unit was installed new in 1999 and has worked well up to this point.

    when i disassembled the tub water filter i found the filter was heavily clogged (it is supposed to be self cleaning), and i also found glass shards from a broken wine glass. i further disassembled the plastic housing under the filter ( held in place by three torx drive screws ) which covers the pump impeller and holds the lower spray arm. while i did not find any blockage in the pump area, and no abnormal sound when i turned the impeller by hand, i did find that one of the pump impeller vanes has a small chip which probably makes the impeller unbalanced resulting in more than normal vibration. i cleaned the water filter and reassembled the parts and the original screeching noise is now gone.

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I recently had the same problem of a loud screeching noise. my unit was installed new in 1999 and has worked well up to this point.

when i disassembled the tub water filter i found the filter was heavily clogged (it is supposed to be self cleaning), and i also found glass shards from a broken wine glass. i further disassembled the plastic housing under the filter ( held in place by three torx drive screws ) which covers the pump impeller and holds the lower spray arm. while i did not find any blockage in the pump area, and no abnormal sound when i turned the impeller by hand, i did find that one of the pump impeller vanes has a small chip which probably makes the impeller unbalanced resulting in more than normal vibration. i cleaned the water filter and reassembled the parts and the original screeching noise is now gone.

Posted on Jan 06, 2009

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