Partner Academy · EcoBSS / FLEX
Warning
3P LV
W2
Fan_Warn
Cooling fan warning
Academy field checklist (Fan_Warn) — no EcoBSS service-table row for this bit.
Register map
- Family
- Three-phase LV (FLEX 3L)
- Register
- 553
- Bit
- 1
Field checks
- Check that cooling fans spin freely and intake/exhaust are not blocked by dust.
- If blades are free but the fan stays off, plan a fan-module replacement.
- Contact Inversol if the fault returns after a clean power cycle.
FAQ
What does EcoBSS W2 mean?
Cooling fan warning
What should I check for EcoBSS W2?
- Check that cooling fans spin freely and intake/exhaust are not blocked by dust.
- If blades are free but the fan stays off, plan a fan-module replacement.
- 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).