Partner Academy · EcoBSS / FLEX
Fault
3P HV
F4
GFDI_Ground_Failure
Ground / GFDI fault
Academy field checklist (GFDI_Ground_Failure) — no EcoBSS service-table row for this bit.
Register map
- Family
- Three-phase HV
- Register
- 555
- Bit
- 3
Field checks
- Same GFDI path as F3: PE bond, PV isolation, leakage sensor.
- Clear moisture / damaged insulation before returning to service.
- Contact Inversol if the fault returns after a clean power cycle.
FAQ
What does EcoBSS F4 mean?
Ground / GFDI fault
What should I check for EcoBSS F4?
- Same GFDI path as F3: PE bond, PV isolation, leakage sensor.
- Clear moisture / damaged insulation before returning to service.
- 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).