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Insulation error on the solar modules

Fronius · Symo Advanced Manual

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An insulation error has been detected on the solar modules. This indicates a potential leakage path from the DC voltage to ground, triggering a warning message for safety.

Vanlige årsaker

  • Degradation or damage to the insulation of DC wiring from solar modules
  • Moisture ingress into PV connectors or junction boxes
  • Ground fault within a solar module

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    If this status code keeps recurring, contact your system engineer to perform insulation resistance tests on the solar module wiring.

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Verifisert teknisk data. Sist oppdatert: March 2026

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