Partner Academy · EcoBSS / FLEX
Fault
3P LV
F30
AC_MainContactor_Fault
AC main line contactor fault
Academy field checklist (AC_MainContactor_Fault) — no EcoBSS service-table row for this bit.
Register map
- Family
- Three-phase LV (FLEX 3L)
- Register
- 556
- Bit
- 13
Field checks
- Field-check the main AC line contactor the same as F11 (coil, feedback, welding).
- Confirm upstream breaker is closed and voltage is present at the contactor input.
- Contact Inversol if the fault returns after a clean power cycle.
FAQ
What does EcoBSS F30 mean?
AC main line contactor fault
What should I check for EcoBSS F30?
- Field-check the main AC line contactor the same as F11 (coil, feedback, welding).
- Confirm upstream breaker is closed and voltage is present at the contactor input.
- 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).