| LED correct operating condition | Fault indication | Possible causes and corrective action |
|---|---|---|
| Power-On (green) | Off | Power is not supplied to unit due to a possible line power problem. Check bulk power supply and connections. |
| Internal fault. Contact technical support. | ||
| Error-Off | Red (continuous) | Outputs are outside of tolerance. Verify loading calculations. |
| Input is over or under voltage and the unit shuts down. Check input supply voltages. |