Internal fault (e.g. battery charging/discharging)

What does 718 mean?

The Fronius Primo GEN24 208-240 inverter has detected an internal fault related to its battery charging or discharging circuitry. This prevents the inverter from effectively managing the flow of power to and from the connected battery system.

• Internal fault (e.g. battery charging/discharging).

Click steps to track your progress.

1. 1

   Perform a full power cycle of the Fronius Primo GEN24 208-240 inverter by disconnecting both AC and DC power, waiting, and then reapplying power.

2. 2

   Verify the DC connections between the inverter and the battery system are secure, correctly wired, and free from damage.

3. 3

   Check the battery system's own status or fault indicators; ensure the battery is operational and not reporting its own internal faults.

4. 4

   Review the inverter's event log for any preceding fault codes related to battery communication, voltage, or current.

5. 5

   If the fault persists after power cycling and external checks, this indicates a failure in the inverter's internal battery power conversion hardware; contact Fronius service.