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304
AC module overtemperature
Fronius · Primo GEN24 Operating Instructions
¿Qué significa 304 ?
This code indicates that the AC module within the inverter has reached an excessively high temperature. This causes a short-term interruption in energy feeding, after which the inverter will resume its startup routine once temperatures normalize.
Causas comunes
- Restricted airflow to the inverter's cooling system due to blocked vents or dirty heat sinks.
- High ambient temperatures, or direct sunlight exposure on the inverter enclosure.
- Failure of internal cooling fans on the AC side.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Clean and purge all cooling air openings and the heat sink of the inverter.
- 2
Verify that the inverter is installed in a location with adequate ventilation and is not subjected to excessive ambient temperatures.
- 3
Inspect internal cooling fans responsible for AC module cooling.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fronius Primo GEN24 Operating Instructions