Partner Academy · EcoBSS / FLEX
Fault
3P HV
F56
BAT1_VoltLow_Fault
Energy storage 1 voltage too low
EcoBSS service: DC BUS / energy-storage voltage too low.
Register map
- Family
- Three-phase HV
- Register
- 558
- Bit
- 7
Field checks
- Check that energy-storage voltage is not too low.
- Check PV input voltage and ensure it is within the allowed range.
- Contact Inversol if the fault does not clear.
FAQ
What does EcoBSS F56 mean?
Energy storage 1 voltage too low
What should I check for EcoBSS F56?
- Check that energy-storage voltage is not too low.
- Check PV input voltage and ensure it is within the allowed range.
- Contact Inversol if the fault does not clear.
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).