Sigenergy
4005
Feed-in Power Limit Hard Protection
Feed-in power limit hard protection activated — solar production exceeds grid feed-in limit.
Common causes
Solar production exceeds grid feed-in limit settingAnti-backflow protection limit exceededSystem misconfiguration
What to check
STEP 1
Check if anti-backflow protection is enabled in settings
STEP 2
If anti-backflow is required, set allowable backflow power below hard protection threshold
Escalate if
Limit setting appears correct but protection keeps activating — contact Sigenergy support via mySigen App > Support > Troubleshooting
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