This guide explains how to safely remove and reinstall the display board on a Genuine Comfort GCDM 32" PTAC unit.

The display board allows users to operate the unit through its built-in control panel. If the display becomes unresponsive or requires replacement, the board may need to be removed for inspection or servicing.

Important: Disconnect the unit from its electrical power source before beginning. Display board removal involves electrical components and should be performed by a qualified service technician.

The PTAC unit does not normally need to be removed from the wall sleeve to access the display board.

Video Guide – Removing and Installing the Display Board

Watch the following video for a demonstration of the display board removal and installation process.

Step 1: Disconnect Power and Remove the Front Panel

1. Turn off the PTAC unit.
2. Disconnect the power cord from the electrical receptacle.
3. Verify that the unit is disconnected from power.
4. Remove the front panel to access the display board assembly.

Do not proceed while the unit is connected to electrical power.

Step 2: Remove the Display Board Assembly

Locate the mounting screws securing the display board assembly to the unit.

Remove the screws highlighted in blue in the image below, supporting the assembly as the screws are removed.

Carefully move the display board assembly away from its mounting position. Avoid pulling or placing tension on the connected wiring.

Display board mounting screws highlighted in blue

Step 3: Disconnect the Display Board

Once the display board assembly has been released, carefully turn it around to access the rear of the board.

Locate the electrical connector and the mounting points shown in the image below.

1. Disconnect the wiring harness from the display board connector.
2. Remove the screws securing the circuit board to its housing, if the circuit board itself needs to be removed.
3. Carefully remove the board without damaging the wiring, connector, or electronic components.

Important: Handle the connector by its housing rather than pulling directly on the wires.

Rear view of the display board showing the electrical connector and mounting points.

Step 4: Reinstall the Display Board

If reinstalling the existing board or installing a compatible replacement:

1. Position the circuit board correctly in its housing and secure it using the appropriate mounting screws.
2. Reconnect the wiring harness, ensuring the connector is fully seated.
3. Position the display board assembly back onto the unit.
4. Reinstall and tighten the mounting screws.
5. Reinstall the PTAC front panel.

Ensure the wiring is properly routed and is not pinched between components.

Step 5: Verify Display Operation

Once the display board and front panel have been reinstalled:

1. Reconnect the unit to its electrical power source.
2. Turn on the PTAC.
3. Confirm that the display illuminates and responds to the control buttons.
4. Verify that the unit responds correctly to the selected operating mode.

If the display remains unresponsive, additional troubleshooting may be required.

Need Assistance?

If your GCDM display board is not responding or you require a replacement, contact Genuine Comfort Support with your unit's model number, serial number, and a description of the issue.

Our team can help identify the appropriate replacement component and recommend further troubleshooting steps.