What does a critical light with a unit number signify?

A critical light with a unit number typically signifies an urgent issue that requires immediate attention concerning the specific unit identified. In this case, the indication that four speed sensors are out aligns with the function of such a critical alert. Speed sensors play a vital role in monitoring and providing feedback on the speed of various components. If multiple sensors are reporting failure, it could indicate a significant malfunction that affects the performance and safety of the entire system.

Addressing this issue promptly is crucial because it may lead to further complications or system failures if left unattended. The presence of a unit number helps technicians identify which unit is experiencing the issue, ensuring that maintenance personnel can quickly locate the source of the problem and take corrective actions.