F084 fault in WEG CFW900 Drive indicates a Self-Diagnostics Error. This means the drive’s internal power-on self-test or active monitoring detected a hardware malfunction in the control circuits.
Cause:
Self-Diagnostics Fault.
- Defect on the inverter internal circuits.
Remedy:
Power down the inverter and check internal circuitry. Contact technical support for card evaluation if fault is persistent.
