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29

Incorrect Battery Polarity

Fronius · Perfect Charging

¿Qué significa 29 ?

The connected battery has been connected with reverse polarity to the charger. This is a critical fault that can cause severe and immediate damage to both the battery and the charger's power electronics if current is allowed to flow.

Causas comunes

  • The battery cables have been physically connected to the charger terminals in reverse (positive to negative, negative to positive).
  • Incorrect wiring of the battery pack itself or its external connections.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    IMMEDIATELY disconnect the battery from the charger to prevent further damage.

  2. 2

    Visually inspect and verify that the positive (+) terminal of the battery is connected to the positive (+) terminal of the charger, and the negative (-) terminal of the battery is connected to the negative (-) terminal of the charger.

  3. 3

    After correcting the polarity, inspect both the charger and the battery terminals for any signs of damage (e.g., burning, melting) that may have occurred.

Ver todos los códigos en este manual (61)
Datos técnicos verificados. Última actualización: March 2026

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