1.

Turn off power to the control panel.
 

2.

Disconnect the GROUND/ NEUTRAL/ LINE wires from the controller.
 

3.

Loosen and remove the brackets that hold the controller in the enclosure door.
 

4.

Carefully pull the controller out through the front of the door.
 

5.

Remove the 4 screws around the perimeter of the controller.
 

6.

With the front of the controller lying on a clean flat surface, GENTLY pull the back of the controller off. NOTE: The back will only partially pull away.
 

7.

Carefully remove the A/D board ribbon cable from the main board. When the cable is lose, the back of the controller will separate more easily. The back IS still attached to the main board. Simply stand it up next to the rest of the unit. DO NOT disconnect any other cables.
 

8.

From the back of the controller, remove the 4 screws that hold the A/D panel in place.
 

9.

Remove the A/D panel and replace it with new one.
 

10.

Replace 4 screws to mount A/D panel.
 

11.

BE SURE TO CONNECT NEW A/D BOARD RIBBON CABLE TO MAIN BOARD!!!!!
 

12.

Re-assemble unit.
 

13.

Start program and test for proper operation.