FDD40J2 Frigidaire Dehumidifier - Overview
Sections of the FDD40J2
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Humidity Control
PartSelect #: PS611518
Manufacturer #: 327362201
This part detects the dampness in the air and will turn off and on without you having to worry about it.
$56.66
In Stock
Control Knob
PartSelect #: PS725248
Manufacturer #: 309307012
This knob accepts a D-shaped shaft.
No Longer Available
Questions And Answers for FDD40J2
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Edward
June 22, 2025
Unit runs fine but not collecting much water
For model number FDD40J2
Hi Edward, thank you for reaching out. The humidity control, part number PS611518, might be malfunctioning, causing the dehumidifier to not detect the correct humidity level, leading to reduced water collection. It controls monitors and detects when the air is damp and will signal to turn off and on automatically. You may need to replace it to fix the issue. We hope this solves your problem!
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Common Symptoms of the FDD40J2
[Viewing 2 of 2]Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
The compressor would not run.
I removed the cover, used a multimeter to test the compressor circuit, and found the compressor start relay to be defective.
Ordered a new one and installed it when it arrived.
Ordered a new one and installed it when it arrived.
Parts Used:
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Linda from Gurnee, IL
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Difficulty Level:Easy
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Total Repair Time:30 - 60 mins
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Tools:Screw drivers
18 of 27 people
found this instruction helpful.
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Compressor was short cycling
Removed the cowling with a square drive screw driver, removed the spring clip from the cover of the compressor controls with a screw driver, pulled off the old compressor start relay and replaced it with the new part. Since other problems could have caused the compressor to short cycle this was a "replace the part and hope it would work" since that would be the most common reason and it was not a very expensive part.
Parts Used:
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Sherman from Tuttle, OK
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Difficulty Level:Easy
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Total Repair Time:30 - 60 mins
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Tools:Screw drivers
12 of 17 people
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Freezer would not run ... replace the compressor start relay which fixed the problem
Pulled out the freezer. Unplugged. No freezer back cover was there. The compressor start relay was in a plastic encasement attached to the compressor - wires led me to it. Removed the solid metal spring with a screwdriver and removed the plastic cover. Tried to pull out the defective relay but the freezer was so old I needed a pliers to remove it. When I put pressure on the old relay with the pliers the relay broke and came off in pieces. I then removed the wires from the broken parts and put them on the new relay. I pushed the new relay onto the 2 pins then replaced the cover and spring. After plugging the freezer in the problem was fixed.
Parts Used:
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Tom from CEDARTOWN, GA
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Difficulty Level:Easy
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Total Repair Time:15 - 30 mins
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Tools:Pliers, Screw drivers
4 of 4 people
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