Which statement about the alphanumeric display's update behavior when faults are present is accurate?

Which statement about the alphanumeric display's update behavior when faults are present is accurate?

• A. It alternates between airflow and fault messages at one-second intervals
• B. It shows only the airflow value
• C. It cycles through four messages every two seconds
• D. It never displays failure messages

Answer: (A)

When faults are present, the display is designed to show both the current airflow reading and any fault indications by alternating between them. The one-second cadence makes the fault information quickly noticeable while still keeping the airflow value visible. This ensures you don’t miss a fault while you’re monitoring the flow. If the display only showed the airflow value, faults could go unseen; if it never displayed fault messages, you wouldn’t get alerted to the problem; and a slower, multi-message cycle wouldn’t provide the rapid fault visibility needed in practice.

When faults are present, the display is designed to show both the current airflow reading and any fault indications by alternating between them. The one-second cadence makes the fault information quickly noticeable while still keeping the airflow value visible. This ensures you don’t miss a fault while you’re monitoring the flow. If the display only showed the airflow value, faults could go unseen; if it never displayed fault messages, you wouldn’t get alerted to the problem; and a slower, multi-message cycle wouldn’t provide the rapid fault visibility needed in practice.