MDDQ40FW1 Frigidaire Dehumidifier - Overview

Diagrams for MDDQ40FW1

See every part. Know exactly what you need.

Parts for the MDDQ40FW1

$5.95

Red Indicator Light Lens

Part #318250801

$51.67

Compressor Start Relay

★★★★★

(1)

Part #216594300

$30.95

SCREW

★★★★★

(1)

Part #134178901

Humidistat Control

Part #5303296823

This control needs to be replaced if the dehumidifier won't shut off.

$94.21

Float

Part #5303306080

$60.74

Air Filter

Part #327350601

$23.36

KNOB-CONTROL

Part #327300703

$94.25

Fan Blade

Part #327650104

$213.84

Defrost Thermostat

Part #5303323233

The thermostat senses that the heat near the cooling coils has reached the desired temperature.

Water Container Reservoir and Float

Part #327651108

$21.95

SCREW

Part #5303007620

$64.55

SWITCH-ON/OFF

Part #5303012345

Common Symptoms of the MDDQ40FW1

How this model fails, and the parts that fix it.

Repair Tips From Fixers Like You

See how others fixed this model. Time, tools, difficulty, and steps that lead to victory! View More

The compressor would not run.

18 of 27 people found this instruction helpful.

Linda from Gurnee, IL
Easy
30 - 60 mins
Screw drivers

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.

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Compressor was short cycling

12 of 17 people found this instruction helpful.

Sherman from Tuttle, OK
Easy
30 - 60 mins
Screw drivers

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" ... Read more

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Unit would run continuously and not shut off

7 of 9 people found this instruction helpful.

Jonathan from New Oxford, PA
Really Easy
Less than 15 mins
Screw drivers

Removed the front cover and then the humidistat from the bracket. Two push on wire connectors and then reversed. Very straightforward and excellent part matching. Given the prices for new dehumidifiers it was great to breathe life back into this unit which does its job well. Thanks for the easy to use web site and fast fast service!

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