Sungrow
SG-025 · IDs 332–363

Boost Capacitor Overvoltage Alarm

Overvoltage at boost capacitor stage — alarm only, inverter continues operating.

Common causes
Abnormal wiring or terminal issueEnvironmental abnormality
What to check
STEP 1
Inverter continues running. Check related wiring and terminals for abnormalities. Look for environmental issues (foreign materials, moisture).
STEP 2
Correct any anomalies found and monitor.
Escalate if
No anomaly found but alarm persists — contact Sungrow support
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More Sungrow fault codes

SG-001 · IDs 2,3,14,15
Grid Overvoltage
SG-002 · IDs 4,5
Grid Undervoltage
SG-003 · ID 8
Grid Overfrequency
SG-004 · ID 9
Grid Underfrequency
SG-005 · ID 10
Grid Power Outage
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