Which status indicates a fault exists?

• A. Green Flashing
• B. Green Steady
• C. Red Steady
• D. Amber Flashing

Answer: (A)

Status indicators use both color and whether the light is steady or flashing to show condition. A flashing indicator signals an abnormal condition that needs attention, while a steady light usually means normal operation. In this scheme, a fault is conveyed by a flashing green light, which combines the attention-grabbing flashing with the green color that often denotes OK when steady. The flashing aspect overrides the usual meaning of green, indicating something is wrong and must be addressed.

Green steady would typically indicate normal operation, while amber flashing is generally a warning or caution rather than a fault, and red steady is commonly an alarm in many systems. But the setup here uses a flashing green light to indicate fault, so that choice best matches a fault condition.