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ErrorLib — Industrial Fault Code Library

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3507

Ground fault on ungrounded terminal of PV array

SMA · SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter

What does 3507 mean?

A ground fault has been detected on the ungrounded terminal of the PV array. This is a critical safety issue and will cause the inverter to stop feeding power until the disturbance is acknowledged and rectified.

Common Causes

  • Ground fault in the PV array on the ungrounded side.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the PV array for ground faults using an insulation resistance tester. Pay special attention to the ungrounded terminals.

Browse all codes in this manual (29)
Verified technical data. Last updated: April 2026

Related Faults

0103*Grid voltage is too high (redundant monitoring)0104*Grid voltage is too high (standard monitoring)0203*Grid voltage is too low (redundant monitoring)
Source: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
Open Manual (Page 36)Search more codes in this manual