F0084 fault in WEG CFW500 Drive indicates an Auto-diagnosis Fault. This means the drive’s internal power-on self-test detected a hardware malfunction or incompatible internal components.
Cause:
- Poor contact in the connection between the main control and the power pack.
- Hardware not compatible with the firmware version.
- Defect detected in the internal circuits of the inverter.
Remedy:
Verify board contacts inside the drive. Check firmware and hardware compatibility.
