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Dehumidifier

Model # DH40UL Official DeLonghi dehumidifier

Here are the diagrams and repair parts for Official DeLonghi DH40UL dehumidifier, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS

Showing 10 of 43 parts |

Stopper 534506

#20

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Stopper

Part #534506

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

Base 690351

#7

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Base

Part #690351

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

Door Cover 534650

#12

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Door cover

Part #534650

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

Gasket 534699

#9

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Gasket

Part #534699

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

Green Lens 511554

#23

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Green lens

Part #511554

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

Caster 551834

#6

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Caster

Part #551834

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

Lever 534880

#42

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Lever

Part #534880

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

Delonghi Cover 535363

#1

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Delonghi cover

Part #535363

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

Cover 535629

#41

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Cover

Part #535629

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

Bushing 531122

#36

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Bushing

Part #531122

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.

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 …

Why won't my dehumidifier turn on?

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

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…

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

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

Why is there frost on my dehumidifier's coil?

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

Why isn't my dehumidifier draining?

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

Why is my dehumidifier noisy?

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

Why won't my dehumidifier run?

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

Why does my dehumidifier leak water?

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 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

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

Effective articles & videos to help repair your dehumidifiers

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

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…

How does a dehumidifier work?

How does a dehumidifier work?

Discover how a dehumidifier works.…

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