Partner Academy · EcoBSS / FLEX
Fault
3P LV
F13
Working_mode_change
Grid / working mode changed
EcoBSS service: working / grid mode change (often clears by itself).
Register map
- Family
- Three-phase LV (FLEX 3L)
- Register
- 555
- Bit
- 12
Field checks
- F13 can appear when grid type or frequency settings change.
- F13 can appear when energy-storage mode is set to “No battery / no storage”.
- On older firmware, F13 may appear when the system working mode changes.
- Usually F13 clears automatically.
- If it persists: turn off DC and AC switches, wait one minute, turn them on again.
- Contact Inversol if the fault does not clear.
FAQ
What does EcoBSS F13 mean?
Grid / working mode changed
What should I check for EcoBSS F13?
- F13 can appear when grid type or frequency settings change.
- F13 can appear when energy-storage mode is set to “No battery / no storage”.
- On older firmware, F13 may appear when the system working mode changes.
- Usually F13 clears automatically.
- If it persists: turn off DC and AC switches, wait one minute, turn them on again.
- 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).