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437

Power stage set problem

Fronius · Symo Advanced Manual

¿Qué significa 437 ?

A problem has been detected within the inverter's power stage set, which is responsible for the actual power conversion and grid interaction. This indicates a malfunction in the high-power section of the device.

Causas comunes

  • Failure of power semiconductor components (e.g., IGBTs, MOSFETs)
  • Fault in the power stage control circuitry
  • Damage to the power stage module

Pasos de reparación & Lista de verificación

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  1. 1

    If this status code is displayed all the time, notify a Fronius-trained service engineer.

Ver todos los códigos en este manual (60)
Datos técnicos verificados. Última actualización: March 2026

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