Which load bank control illuminates if the blower fails?

The blower fail indicator is designed specifically to alert operators to failures in the cooling system associated with load banks. A load bank relies on airflow to maintain optimal operating temperatures during testing, ensuring that electrical components do not overheat. If the blower, which facilitates this cooling air, ceases to operate properly, the blower fail indicator will illuminate to notify users of the issue.

This immediate visual alert is crucial because it helps prevent potential damage to the load bank by signaling that corrective actions may need to be taken. The other indicators mentioned, such as load status, power source, and battery status, serve different functions and do not directly inform users about the condition of the blower or the cooling system. Thus, the blower fail indicator is specifically tailored to monitor and report issues related to the blower's operation.