What it means
Inverter interface Over Voltage protection — Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects the battery's inverter interface against over-voltage conditions from the inverter side.
Cause: Voltage applied at the battery's inverter interface exceeded the over-voltage protection limit — the inverter's charge-voltage setting is too high for this pack.
How to fix it
- Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
- If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.
Source: felicity-5.1-kwh-user-manual.pdf, p.4