What does Device Fault mean on Huawei Inverter?
- TTammy BruceSep 23, 2025
If your Huawei Inverter is showing a 'Device Fault', it means an unrecoverable fault has occurred on a circuit inside the inverter. Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. If the fault persists, contact your dealer or Huawei technical support. Note: If the cause ID is ID 1, perform the preceding operation when the PV string current is less than 1 A.











