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457
Grid relay is sticking or neutral conductor ground voltage too high
Fronius · Solar Energy
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The inverter is unable to feed energy into the grid due to either a sticking grid relay or an excessively high neutral conductor ground voltage. The neutral conductor ground voltage must be less than 30V for safe operation.
Häufige Ursachen
- Malfunctioning (sticking) grid relay
- Neutral conductor ground voltage exceeding 30V
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Check the grounding connection of the system
- 2
Measure the neutral conductor ground voltage and verify it is less than 30V
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
Verwandte Fehlercodes
Quelle: Fronius Solar Energy