Partner Academy · EcoBSS / FLEX
Fault
3P HV
F57
BAT2_VoltLow_Fault
Energy storage 2 voltage too low
Academy field checklist (BAT2_VoltLow_Fault) — no EcoBSS service-table row for this bit.
Register map
- Family
- Three-phase HV
- Register
- 558
- Bit
- 8
Field checks
- Energy storage 2 voltage too low (HV map) — check second pack SOC, fuses, and BMS of storage 2; charge if safe.
- Contact Inversol if the fault returns after a clean power cycle.
FAQ
What does EcoBSS F57 mean?
Energy storage 2 voltage too low
What should I check for EcoBSS F57?
- Energy storage 2 voltage too low (HV map) — check second pack SOC, fuses, and BMS of storage 2; charge if safe.
- Contact Inversol if the fault returns after a clean power cycle.
When should I contact Inversol?
Confirm LV vs HV family on the nameplate, complete the field checks, then contact Inversol with model, SN, family, and a photo if the code returns after a clean power cycle.
Partner lookup from EcoBSS Flex register map V1.2 — not a substitute for the official service manual or live measurements. Always match the inverter family (3P LV / FLEX 3L vs 3P HV).