3502

GFDI has tripped

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

What does 3502 mean?

The Ground Fault Detection and Interruption (GFDI) device has tripped. This indicates a detected ground fault condition within the PV array. The inverter will switch to the 'Disturbance' operating state.

Common Causes

  • Ground fault in the PV array.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the PV array for ground faults using an insulation resistance tester.

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

Related Faults

7714Maximum number of GFDI switch cycles reached0203*Grid voltage is too low (redundant monitoring)0104*Grid voltage is too high (standard monitoring)
Source: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
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