What caution message will be displayed if the APU is not operating?

When the APU (Auxiliary Power Unit) is not operating, the caution message "BLEED MISCONFIG" will be displayed. This message indicates that there is an issue with the bleed air configuration, which is directly impacted by the APU's operational status. The APU provides bleed air for various functions including engine start, cabin pressurization, and environmental control systems. If the APU is not functioning, the aircraft may not be able to provide the necessary bleed air for these systems, resulting in a misconfiguration.

In this context, maintaining proper bleed air flow is crucial for the safe operation of the aircraft systems. The caution serves as a warning to the crew that they need to check their bleed air settings and ensure there are appropriate plans in place, such as switching to engine bleed air if necessary, to continue safe operations.

It's important for operators to recognize this caution as it could affect overall system performance and safety if not addressed. Understanding the operational implications of such warnings reinforces the knowledge necessary for safe flight operations in the CRJ 200.