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475
Insulation fault (connection between solar module and ground)
Fronius · Symo Advanced Manual
¿Qué significa 475 ?
An insulation fault has been detected in the connection between the solar modules and ground. This means there's an unintended electrical path from the DC side to ground, which is a safety hazard.
Causas comunes
- 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
Pasos de reparación & Lista de verificación
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- 1
If this status code keeps recurring, contact your system engineer to perform insulation resistance tests on the solar module wiring.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Fronius Symo Advanced Manual