Option Board External Fault

What does EF0 mean?

An external fault condition has been detected by an installed option board. This indicates a problem originating from equipment connected to or monitored by the option board, rather than an internal Drive issue. If ignored, the external issue could damage the connected equipment or compromise system safety.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check the physical communication signals and wiring to and from the option board for integrity and proper connection.