Fronius · Perfect Charging
This fault indicates that the electrolyte circulation system is not functioning correctly, specifically that the pressure switch is not activating. This condition is critical for certain battery types requiring active electrolyte management to prevent issues like overheating or stratification during charging.
Click steps to track your progress.
Verify the operation of the pressure switch by checking its electrical state when circulation should be active.
Inspect the electrolyte circulation pump for any blockages, debris, or signs of operational failure.
Check the electrolyte level in all battery cells and replenish if it is below the manufacturer's recommended level.