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Frigidaire
Dehumidifier

Model # MR40N1 Official Frigidaire dehumidifier

Here are the diagrams and repair parts for Official Frigidaire MR40N1 dehumidifier, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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Showing 10 of 70 parts  |
Screw 08016435
Screw

Part #08016435

This item is not returnable
$2.16
In Stock
Kelvinator Room Air Conditioner Lock Nut 08007481
#2

Unit parts diagram

Kelvinator room air conditioner lock nut

Part #08007481

This item is not returnable
$5.74
In Stock
Switch 5303012345
#4

Unit parts diagram

Switch

Part #5303012345

$39.35
In Stock
Compressor 5303015383
#1

Compressor diagram

Compressor

Part #5303015383

$201.99
In Stock
Kenmore Consnsr Coil 3015167
#13

Unit parts diagram

Kenmore consnsr coil

Part #3015167

$67.49
In Stock
Screw 08007473
#29

Unit parts diagram

Screw

Part #08007473

Replaced by #5304455651

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Manufacturer substitution
This part replaces 08007473. Substitute parts can look different from the original.
$13.26
In Stock
Relay 3017457
#2

Compressor diagram

Relay

Part #3017457

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

Screw 08012686
#32

Unit parts diagram

Screw

Part #08012686

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

Escutcheon 08017383
#3

Cabinet parts diagram

Escutcheon

Part #08017383

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

Motor 5303208878
#1

Unit parts diagram

Motor

Part #5303208878

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.

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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…

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Why isn't my dehumidifier draining?

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

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Why won't my dehumidifier turn on?

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

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Why is there frost on my dehumidifier's coil?

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

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

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

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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 …

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Why won't my dehumidifier run?

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

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Why is my dehumidifier noisy?

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

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Why does my dehumidifier leak water?

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

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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.

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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…

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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…

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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.

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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.…

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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.…

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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…

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