Event E004
Qualified person
Event message:
External Fault
Explanation:
The system detected an alarm signal from external protective devices (e.g., emergency switch, fire protection) and immediately implemented a safety measure: The system entered an error state, stopped operation, and switched off the AC-side circuit breaker.
The message is a general warning.
Corrective measures:
Immediately check the system interface to locate and record any specific warnings from external devices that are reported at the same time (e.g., "Emergency Stop Signal" or "Water Ingression Alarm").
Based on the reported specific device warning, check the location and eliminate the cause of the external device alarm (e.g., reset the emergency switch, fix the water leak).
After verifying that all alarms from external devices have been cleared and the location is secure, you must manually perform the Clear errors operation in the battery pack control system interface to restore normal operation.