Abstract: The present disclosure describes a system for handling detected error signals, providing the circuit elements for processing fault reports and implementing automatic fault isolation. More specifically, the system develops a fault report for each component based upon error signals derived therefrom. Changes in the fault report are detected and selector circuits are actuated to automatically isolate the fault to the particular component or components, or to reset the system in response to previous fault correction. The present system is advantageous in that it is independent of the equipment technology and applies to all design levels, from the unit itself to the individual components of which it is comprised.