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307

DC low DC input voltage too low for feeding energy into the grid

Fronius · Symo Advanced Manual

¿Qué significa 307 ?

The DC input voltage from the solar modules is below the minimum threshold required for the inverter to operate and feed energy into the grid. This results in a short-term interruption, but the inverter will resume its start-up routine when conditions improve. This status code is routinely displayed during periods of low insolation (e.g., morning and evening) and does not indicate a fault at those times.

Causas comunes

  • Insufficient solar insolation on the PV array (e.g., dawn, dusk, heavy cloud cover, shading)
  • Problem with the DC wiring or connections to the PV array leading to voltage drop

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Wait for a sufficient level of insolation (sunlight) on the solar modules.

  2. 2

    Check that solar modules are not covered by snow, shade, or other obstructions.

  3. 3

    If this status code keeps recurring outside of normal low light periods, contact your system engineer.

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Datos técnicos verificados. Última actualización: March 2026

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