The goal of fault detection is to detect the presence of a positioning failure.

Interference with fault detection in the same component.

This is usually handled with a separate "automated fault detection system".

Interference with fault detection in another component.

This requires automatic fault detection and reporting.

This makes network based fault detection and diagnosis techniques, which are essential to monitor the system performance, receive more and more attention.

This may also allow a subsystem to be automatically shut down and restarted on fault detection.

However, some component-level fault detection may be possible, usually requiring replacement of several components across a signal path.

Monitoring visibility and fault detection are limited to the inverter (or in some cases, to the string level)

Continuous performance measurement enables panel-level online monitoring and fault detection.