Frigidaire
Dehumidifier

Model # MDDQ50FF3 Official Frigidaire dehumidifier - p5995304390

Here are the diagrams and repair parts for Official Frigidaire MDDQ50FF3 dehumidifier - p5995304390, 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.

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 41 parts  |

Kelvinator Capacitor 5303001902
#46

Unit parts diagram

Kelvinator capacitor

Part #5303001902

In Stock
Gibson Harness 327354601
#33

Unit parts diagram

Gibson harness

Part #327354601

In Stock
Control Knob 327300703
#7

Cabinet front and wrapper diagram

Control knob

Part #327300703

In Stock
Switch 5303012345
#5

Unit parts diagram

Switch

Part #5303012345

In Stock
Kelvinator Room Air Conditioner Lock Nut 08007481
#14

Unit parts diagram

Kelvinator room air conditioner lock nut

Part #08007481

This item is not returnable
In Stock
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.
In Stock
Cabinet 5303322585
#1

Cabinet front and wrapper diagram

Cabinet

Part #5303322585

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

Fan Housing 327650001
#23

Unit parts diagram

Fan housing

Part #327650001

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

Thermostat 5304402782
#25

Unit parts diagram

Thermostat

Part #5304402782

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

Retainer 5303274000
#39

Unit parts diagram

Retainer

Part #5303274000

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.

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

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

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

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

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

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

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

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

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

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.

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.…

Repair difficulty
Time required
 30 minutes or less
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…

Repair difficulty
Time required
 45 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…

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.

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.…

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.…

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…