Fronius · Perfect Charging
An error occurred during the RI (Internal Resistance) charging process. This specialized charging method monitors battery internal resistance, and a fault indicates a significant deviation from expected behavior or a measurement issue with this diagnostic cycle.
Click steps to track your progress.
Assess the battery's internal resistance independently using a dedicated battery diagnostic tool to confirm its health.
Consult the charger's specific manual for troubleshooting steps related to RI charging diagnostics.
Verify the charger's RI charging parameters and settings to ensure they are appropriate for the connected battery type.