Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Frigidaire
Dehumidifier

Model # MDD40WF1 Official Frigidaire dehumidifier - 5995267142

Here are the diagrams and repair parts for Official Frigidaire MDD40WF1 dehumidifier - 5995267142, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 73 parts  |
Room Air Conditioner Screw 5303015427
Room air conditioner screw

Part #5303015427

Replaced by #134178901

?
Manufacturer substitution
This part replaces 5303015427. Substitute parts can look different from the original.
$14.69
In Stock
Kelvinator Room Air Conditioner Lock Nut 08007481
Kelvinator room air conditioner lock nut

Part #08007481

This item is not returnable
$5.74
In Stock
Control Knob 327300703
#7

Cabinet front diagram

Control knob

Part #327300703

$14.99
In Stock
Switch 5303012345
Switch

Part #5303012345

$39.35
In Stock
Compressor 5303015383
#34

Unit p45v0041 diagram

Compressor

Part #5303015383

$201.99
In Stock
Capacitor 5303303824
#46

Unit p45v0042 diagram

Capacitor

Part #5303303824

$30.99
In Stock
Cover Capacitor 5303303821
#48

Unit p45v0042 diagram

Cover capacitor

Part #5303303821

This item is not returnable
$3.49
In Stock
Relay 3204486
#42

Unit p45v0042 diagram

Relay

Part #3204486

Replaced by #216594300

?
Manufacturer substitution
This part replaces 3204486. Substitute parts can look different from the original.
$53.69 | 
10% OFF Phone Price : $59.69
In Stock
Condenser 5303307379
#26

Unit p45v0042 diagram

Condenser

Part #5303307379

The manufacturer no longer makes this part, and there's no substitute part

Thermostat D 5303308291
#25

Unit p45v0042 diagram

Thermostat d

Part #5303308291

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your dehumidifiers

Choose a symptom to see related dehumidifier repairs.

View all

Why does my dehumidifier run all the time?

Main causes: dehumidifier too small for the space, bad humidity sensor, faulty evaporator thermistor, low refrigerant, b…

Read more

Why isn't my dehumidifier draining?

Main causes: clogged drain hose, drain hose not properly connected…

Read more

Why won't my dehumidifier turn on?

Main causes: lack of electrical power, wiring failure, electronic control board failure, user interface control failure…

Read more

Why is there frost on my dehumidifier's coil?

Main causes: room temperature below 65 degrees Fahrenheit, control system failure…

Read more

Why isn't my dehumidifier's remote monitor working?

Main causes: weak or dead batteries, out of range, radio frequency interference…

Read more

Why doesn't my dehumidifier remove moisture?

Main causes: dirty air filter, clogged grill, dehumidifier placed too close to the wall, dehumidifier too small for the …

Read more

Why won't my dehumidifier run?

Main causes: collection bucket not installed, collection bucket full of water…

Read more

Why is my dehumidifier noisy?

Main causes: loose fan motor mounting screws, loose compressor mounting bracket screws, bad fan, faulty compressor…

Read more

Why does my dehumidifier leak water?

Main causes: collection bucket not installed correctly, cracked collection bucket, loose drain hose connection…

Read more

Most common repair guides to help fix your dehumidifiers

These step-by-step repair guides will help you safely fix what’s broken on your dehumidifier.

View all
How to replace a dehumidifier sensor assembly

How to replace a dehumidifier sensor assembly

If the humidifier sensor doesn’t properly detect humidity or evaporator temperature, install a new sensor assembly, foll…

Read more
Repair difficulty
Time required
 45 minutes or less
How to replace a dehumidifier user interface control board

How to replace a dehumidifier user interface control board

If the dehumidifier doesn’t respond when you try to set it, follow these steps to replace it.…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a dehumidifier electronic control board

How to replace a dehumidifier electronic control board

If the dehumidifier won’t power up because the control board has failed, use the steps in this repair guide to replace t…

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your dehumidifiers

Use the advice and tips in these articles to get the most out of your dehumidifier.

View all
Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Read more
How to repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…

Read more
How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

Read more

Parts & More