Dehumidifier symptoms

We have the DIY troubleshooting help you need when your dehumidifier doesn't remove moisture, won't turn on or has excessive frost on the coil. Use our symptoms and repair help to find out what's wrong and fix your dehumidifier. You can find and order dehumidifier repair parts by keying your model number in the search bar. Follow the steps in the dehumidifier repair guides to install replacement parts and get your dehumidifier working again.

dehumidifier

Symptoms common to all dehumidifiers

Choose a symptom to see related dehumidifier repairs.

Main causes: dehumidifier too small for the space, bad humidity sensor, faulty evaporator thermistor, low refrigerant, bad compressor
Main causes: lack of electrical power, wiring failure, electronic control board failure, user interface control failure
Main causes: collection bucket not installed correctly, cracked collection bucket, loose drain hose connection
Main causes: collection bucket not installed, collection bucket full of water
Main causes: room temperature below 65 degrees Fahrenheit, control system failure
Main causes: clogged drain hose, drain hose not properly connected
Main causes: weak or dead batteries, out of range, radio frequency interference
Main causes: dirty air filter, clogged grill, dehumidifier placed too close to the wall, dehumidifier too small for the space
Main causes: loose fan motor mounting screws, loose compressor mounting bracket screws, bad fan, faulty compressor

Repair guides common to all dehumidifiers

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

January 1, 2014
By Lyle Weischwill
How to replace a dehumidifier sensor assembly

If the humidifier sensor doesn’t properly detect humidity or evaporator temperature, install a new sensor assembly, following these steps.

Repair difficulty
Time required
 45 minutes or less
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 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 the electronic control board and fix your dehumidifier.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all dehumidifiers

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

August 18, 2021

Using a wiring schematic to trace a current video

By Sears PartsDirect staff

Find out what’s wrong with your appliance by following a circuit.

January 6, 2015

How to stop dehumidifier leaks

By Sears PartsDirect staff

Here are some tips to stop a dehumidifier from leaking water.

December 16, 2014

How to clean a dehumidifier

By Sears PartsDirect staff

How to clean a dehumidifier for more efficient operation.