Dual Indication Fault
What is Dual Indication Fault?
The monitor Detects more than one active input (color) on a channel (GY + GR + YR + GYR)
When you have a Dark approach that is not found in the Cabinet, the monitor will have a Dual Indications or Conflict Fault.
Check the following: cabinet wiring, signal components (Load Switches), shorts, or floating grounds.