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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
Troubleshoot the PV array thoroughly for ground faults before replacing the fuse.
- 2
Replace the GFDI fuse with a Littelfuse KLKD 1 Amp, 600V AC/DC type fuse.
- 3
Manually reset the inverter after replacing the fuse and clearing any ground faults.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: SMA SUNNY BOY 5000US-8000US Solar Inverter