Partner Academy · EcoBSS / FLEX
Warning
3P HV
W3
Grid_phase_wrong
Incorrect grid phase sequence
Academy field checklist (Grid_phase_wrong) — no EcoBSS service-table row for this bit.
Register map
- Family
- Three-phase HV
- Register
- 553
- Bit
- 2
Field checks
- On three-phase GRID, swap any two phases (L1↔L2 or L2↔L3) and re-check rotation.
- Do not enable export until phase sequence is correct.
- Contact Inversol if the fault returns after a clean power cycle.
FAQ
What does EcoBSS W3 mean?
Incorrect grid phase sequence
What should I check for EcoBSS W3?
- On three-phase GRID, swap any two phases (L1↔L2 or L2↔L3) and re-check rotation.
- Do not enable export until phase sequence is correct.
- 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).