Backup power operation not possible
Fronius · Primo GEN24
¿Qué significa 901 ?
The Fronius Primo GEN24 208-240 inverter is unable to switch to or maintain backup power operation (PV Point or Essential Backup). This means the system cannot provide emergency power to critical loads during a grid outage.
Causas comunes
- Backup power operation not possible.
- Battery not connected.
- Battery not charged.
- Grid still present (backup power not required).
- Incorrect wiring of backup power connection.
- Faulty transfer switch (external or internal).
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Verify that a compatible battery system is correctly connected to the Fronius Primo GEN24 208-240 inverter and is sufficiently charged for backup operation.
- 2
Check the status of the public grid; backup power will only activate during a grid outage.
- 3
Inspect the wiring and connections for the backup power circuit (e.g., PV Point, Essential Backup box) to ensure they are correctly installed as per the manual.
- 4
If an external transfer switch or contactor is used, verify its operational status and control signals.
- 5
Ensure all necessary backup power features are enabled in the inverter's settings (e.g., "PV Point active" or "Essential Backup mode").