AA3 — Communication fault with PCA Input

What does AA3 mean?

A communication fault has occurred with the input board (PCA Input). Check the communication cables and their connections.

• Check the communication cables and their connections
• Communication fault has occurred to the input board

Click steps to track your progress.

1. 1

   Inspect all communication cables connected to the input board.

2. 2

   Ensure all connections are secure and free of corrosion.

3. 3

   Check for damaged cables.

4. 4

   Restart the system after verifying connections.