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Partner Academy · EcoBSS / FLEX

Fault 3P LV F56

DC_VoltLow_Fault

DC bus voltage too low

EcoBSS service: DC BUS / energy-storage voltage too low.

Register map

Family
Three-phase LV (FLEX 3L)
Register
558
Bit
7

Field checks

  1. Check that energy-storage voltage is not too low.
  2. Check PV input voltage and ensure it is within the allowed range.
  3. Contact Inversol if the fault does not clear.

FAQ

What does EcoBSS F56 mean?
DC bus voltage too low
What should I check for EcoBSS F56?
  1. Check that energy-storage voltage is not too low.
  2. Check PV input voltage and ensure it is within the allowed range.
  3. 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).

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