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Whirlpool
Dehumidifier

Model # AD40TJ0 Official Whirlpool dehumidifier

Here are the diagrams and repair parts for Official Whirlpool AD40TJ0 dehumidifier, as well as links to manuals and error code tables, if available.

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Owner’s manual
Error Codes

Model diagram and schematic

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Showing 10 of 44 parts  |
Refrigerator Screw 1157158
#27

Air flow and control diagram

Refrigerator screw

Part #1157158

Replaced by #WP489069

?
Manufacturer substitution
This part replaces 1157158. Substitute parts can look different from the original.
This item is not returnable
$4.39 | 
19% OFF Phone Price : $5.39
In Stock
Screw, 8 X 1 488480
Screw, 8 x 1

Part #488480

Replaced by #WP489069

?
Manufacturer substitution
This part replaces 488480. Substitute parts can look different from the original.
This item is not returnable
$4.39 | 
19% OFF Phone Price : $5.39
In Stock
Fan Motor 1183425
#10

Air flow and control diagram

Fan motor

Part #1183425

Replaced by #4389130

?
Manufacturer substitution
This part replaces 1183425. Substitute parts can look different from the original.
$191.18
In Stock
Cable Tie 857547
#25

Air flow and control diagram

Cable tie

Part #857547

Replaced by #WPW10339879

?
Manufacturer substitution
This part replaces 857547. Substitute parts can look different from the original.
This item is not returnable
$4.37 | 
19% OFF Phone Price : $5.37
In Stock
Strainer 1162526
#3

Unit diagram

Strainer

Part #1162526

Replaced by #WP1162526

?
Manufacturer substitution
This part replaces 1162526. Substitute parts can look different from the original.
$29.89
In Stock
Guard Edge 1180634
#28

Air flow and control diagram

Guard edge

Part #1180634

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

Mumidstat 1183422
#2

Air flow and control diagram

Mumidstat

Part #1183422

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

Relay 950058
#11

Unit diagram

Relay

Part #950058

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

Nut 488130
#17

Air flow and control diagram

Nut

Part #488130

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

Relief Stirrer 1180504
#22

Air flow and control diagram

Relief stirrer

Part #1180504

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 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 turn on?

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

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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's remote monitor working?

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

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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 draining?

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

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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 won't my dehumidifier run?

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

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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 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
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 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

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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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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How does a dehumidifier work?

How does a dehumidifier work?

Discover how a dehumidifier works.…

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