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3504

Insulation monitoring device detected insulation error

SMA · SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter

¿Qué significa 3504 ?

The insulation monitoring device has detected an insulation error. If parameter IsoErrIgn is set to 'On', this error is ignored. This indicates a potential safety risk due to compromised insulation in the PV array.

Causas comunes

  • Ground fault in the PV array.
  • Degraded insulation in PV modules or wiring.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Check the PV array for ground faults using an insulation resistance tester.

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Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

0103*Grid voltage is too high (redundant monitoring)0104*Grid voltage is too high (standard monitoring)0203*Grid voltage is too low (redundant monitoring)
Fuente: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
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