How to Replace a Dehumidifier Electronic Control Board

 

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This DIY repair guide explains how to replace the electronic control board in a dehumidifier. The electronic control board activates the compressor and fan. It also monitors the temperature and humidity, turning the dehumidifier on and off to keep the humidity level you set. If the dehumidifier won't start at all or if the compressor or fan don't turn on and off as expected, replace the electronic control board with the manufacturer-approved replacement part.

Follow the steps in this guide to replace the electronic control board in Kenmore and LG dehumidifiers.

Repair difficulty:
     
Time required:

Less than 45 min.

Parts Required

  • Electronic control board

For manuals, repair guides, and specific part recommendations, enter your model number.

Tools Required

  • Phillips screwdriver
  • Work gloves

Before you begin

Wear work gloves to protect your hands.

Instructions

 Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.

Step 1: Disconnect power

Unplug the power cord from the wall outlet.

Step 2: Remove the collection bucket

Pull the water collection bucket out of the front of the dehumidifier case.

Step 3: Remove the air filter

Pull the air filter out of the bottom of the front grill.

 Tip: Clean the air filter if it’s dirty.

Step 4: Remove the front grill

Remove the 2 screws at the bottom of the front grill that secure it to the frame.

Lift the front grill carefully up and off of the front of the frame and set the front grill down in front of the dehumidifier.  The wire harness for the user interface control board is still attached on the back of the front grill. Keep the front grill directly in front of the dehumidifier to avoid damaging the user interface control board wire harness.

 

Step 5: Remove the back panel

Remove the screws that secure the back panel to the dehumidifier.

Carefully pry out a bottom corner of the back panel and pull the back panel off of the dehumidifier.

 

Step 6: Remove the outer case

Remove the screws that secure the outer case to the humidifier.

Pull the outer case off the dehumidifier.

Step 7: Remove the fan capacitor

Remove the screw that fastens the fan capacitor to the side of the control box.

Move the fan capacitor up and out of the way to access the electronic control board in the control box. 

 

Step 8: Remove the electronic control board

Remove the mounting screws that fasten the electronic control board in the control box.

Pull the electronic control board out to a position in front of the control box to access the wires attached to the electronic control board.

Take a digital picture or label the wires connected to the electronic control board so you can attach them correctly to the new electronic control board.

Remove all wires connected to electronic control board and discard the electronic control board.

Step 9: Install the new electronic control board

Connect all of the wires to the new electronic control board using your digital photo or labels as a guide.

Position the new electronic control board in the control box and secure it with the mounting screws.

Step 10: Reinstall the fan capacitor

Position the fan capacitor in the cabinet and secure it using the mounting screws.

Step 11: Reassemble the dehumidifier

Position the outer case on the dehumidifier and secure it using the mounting screws.

Reinstall the back panel on the dehumidifier and secure it with the mounting screws.

Place the front grill on the dehumidifier and secure it with the mounting screws.

Push the filter back onto the front grill.

Reinstall the collection bucket in the front of the dehumidifier.

Step 12: Restore power

Plug the dehumidifier into the wall outlet.