OPEN SCR/DOUBLER PACK

What does F912 mean?

The PCU detected one or more open SCR/doubler packs. This indicates a failure within the power conversion stages of the drive, preventing proper current flow.

• One or more SCR/doubler packs are open.

Click steps to track your progress.

1. 1

   Remove power from the drive.

2. 2

   Consult Section 5, MAINTENANCE, to replace the SCR(s) that are open.

3. 3

   Repeat the diagnostic test until the SCDU displays the 'PASS' message.