EL
ErrorLib
Brands
||
  1. Home
  2. SMA
  3. SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
  4. 3502
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

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: 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