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GFDI Fuse Open

GFDI Fuse Cleared or Missing

SMA · SUNNY BOY 5000US-8000US Solar Inverter

¿Qué significa GFDI Fuse Open ?

The Ground Fault Detection and Interruption (GFDI) fuse, located in the fuse holder on the circuit board of the Sunny Boy SB50US-80US-IUS094030, has cleared or is not present. This fuse is critical for protecting the PV system in the event of an array ground fault.

Causas comunes

  • Ground fault in the PV array, causing the fuse to clear (current greater than 1 Amp).
  • GFDI fuse is not present in its holder.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Troubleshoot the PV array thoroughly for ground faults before replacing the fuse.

  2. 2

    Replace the GFDI fuse with a Littelfuse KLKD 1 Amp, 600V AC/DC type fuse.

  3. 3

    Manually reset the inverter after replacing the fuse and clearing any ground faults.

Ver todos los códigos en este manual (23)
Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

Fuente: SMA SUNNY BOY 5000US-8000US Solar Inverter