Partner Academy · EcoBSS / FLEX
Fault
3P HV
F49
AC_U_GridCurr_DcHigh_Fault
Phase U grid current DC component high
Academy field checklist (AC_U_GridCurr_DcHigh_Fault) — no EcoBSS service-table row for this bit.
Register map
- Family
- Three-phase HV
- Register
- 558
- Bit
- 0
Field checks
- Phase U grid current has a high DC component — check CT/sensor for that phase and look for asymmetric load or sensor fault.
- Escalate if offset remains with balanced load.
- Contact Inversol if the fault returns after a clean power cycle.
FAQ
What does EcoBSS F49 mean?
Phase U grid current DC component high
What should I check for EcoBSS F49?
- Phase U grid current has a high DC component — check CT/sensor for that phase and look for asymmetric load or sensor fault.
- Escalate if offset remains with balanced load.
- 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).