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

0203*Grid voltage is too low (redundant monitoring)3511Inverter detected insulation error3803The PV array current is too high
Source: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
Open Manual (Page 36)Search more codes in this manual