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309
DC input voltage MPPT 1 too high
Fronius · Primo GEN24 Operating Instructions
¿Qué significa 309 ?
This code indicates that the DC input voltage from the PV string connected to Maximum Power Point Tracker 1 (MPPT 1) is too high. This triggers a short-term interruption in energy feeding, and the inverter will attempt to resume its startup routine.
Causas comunes
- PV string connected to MPPT1 has an open-circuit voltage (Voc) that exceeds the inverter's maximum input voltage.
- Faulty PV modules in the string leading to excessive voltage.
- Incorrect string configuration or number of modules for MPPT1.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
If the status code is displayed continuously, notify a Fronius-trained service engineer.
- 2
Verify the open-circuit voltage (Voc) of the PV string connected to MPPT1 and ensure it is within the inverter's specified limits.
- 3
Reconfigure or modify the PV string connected to MPPT1 if its voltage exceeds the inverter's rating.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fronius Primo GEN24 Operating Instructions