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401
Grid fault
SMA · Sunny Boy Solar Inverter
¿Qué significa 401 ?
The inverter has disconnected from the utility grid because it detected a stand-alone grid condition or a very large change in the power frequency. This protects the inverter and grid from unstable power conditions.
Causas comunes
- Detection of a stand-alone grid (island operation).
- Significant short-term fluctuations in the power frequency of the utility grid.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Check the grid connection for significant short-term frequency fluctuations.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: SMA Sunny Boy Solar Inverter