OPEN SCR FAULT

What does 912 mean?

One of the SCRs in the system is not conducting current as expected. This condition is checked only upon request through the PCU #998 Diagnostics CDU function. The optional handheld PCDU will also identify which specific SCR pair is faulty. A DSD Power Down is required.

• One or more SCRs are failing to conduct current.
• Faulty or disconnected SCR gating leads.

Click steps to track your progress.

1. 1

   Initiate a DSD Power Down for the drive.

2. 2

   Run the PCU #998 Diagnostics CDU function to identify the non-conducting SCR.

3. 3

   If available, use the optional handheld PCDU to identify the exact open SCR pair.

4. 4

   Check the SCR gating leads for proper connection and integrity.

5. 5

   Replace the identified open SCR.