Non-critical alarm — inverter continues operating but condition should be investigated. IDs include: 59, 70–83, 89, 216–233, 432–434, 500–518, 635–638, 900, 901, 910, 911, 996.
Common causes
Wiring or terminal anomalyEnvironmental abnormality (foreign material, moisture)Internal monitoring alert
What to check
STEP 1
Inverter continues running — no immediate shutdown required. Check all related wiring and terminals for anomalies (loose connections, corrosion, foreign material).
STEP 2
Check for environmental issues around inverter (moisture, dust, obstructions). Take corrective measures as appropriate.
Escalate if
No anomaly found but alarm persists — contact Sungrow support
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