How to Replace a Window Air Conditioner User Interface Control Board

 

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This step-by-step repair guide explains how to replace the user interface control board in a window air conditioner. Located in the control panel, the user interface control board displays the settings and sends signals to the electronic control board to activate components when you push the buttons. If the display won't light up or if the control panel won't respond when you select a button, replace the user interface control board with the manufacturer-approved replacement part.

Repair difficulty:
     
Time required:

Less than 30 min.

Parts Required

  • User interface 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.

Use a towel to pad the work surface.

 

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 electrical power

Unplug the power cord from the wall outlet.

Step 2: Remove the front grill panel and filter

Grasp the sides of the front grill panel at the top and pull the front grill panel out and off of the air conditioner.

Pull the filter out.

 

 Tip: Take this opportunity to clean the air filter if necessary.

Step 3: Remove the control panel

Remove the screws from the sides and bottom of the control panel.

Pull the control panel up and hold it above the air conditioner. Unplug the wire harness connection for the user interface control board.

Set the control panel face down on a padded work surface. 

 

Step 4: Remove the user interface control board

Remove the screws in the sides of the user interface control case and open the case.

Remove mounting screws from the user interface control board. 

Pull the user interface control board out of the case and release the wire harness from the molded plastic retainers on the control panel.

 

Step 5: Install the new user interface control board

Insert the user interface control board in the case and reinstall the mounting screws.

Route the wire harness through the molded plastic retainers on the control panel.

Close the case and reinstall the screws on the sides of the case.

 

Step 6: Reinstall the control panel

Position the control panel above the air conditioner and plug the user interface control wire harness back in.

Position the control panel on the front of the air conditioner and reinstall the mounting screws in the control panel.

 

Step 7: Reinstall the front grill panel and filter

Insert the filter on the front of the air conditioner.

Position the front grill panel on the front of the air conditioner and snap the front grill panel into place.

 

Step 8: Restore the power

Plug the air conditioner into the electrical outlet.