Partner Academy · EcoBSS / FLEX
Fault
3P LV
F64
Heatsink_HighTemp_Fault
Heatsink over-temperature fault
EcoBSS service: heatsink over-temperature.
Register map
- Family
- Three-phase LV (FLEX 3L)
- Register
- 558
- Bit
- 15
Field checks
- Check that ambient temperature is not too high.
- Turn the inverter off for 10 minutes, then restart.
- Contact Inversol if the problem repeats.
FAQ
What does EcoBSS F64 mean?
Heatsink over-temperature fault
What should I check for EcoBSS F64?
- Check that ambient temperature is not too high.
- Turn the inverter off for 10 minutes, then restart.
- Contact Inversol if the problem repeats.
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).