| LED Code | Underlying Failure | Root Cause & Initial Troubleshooting |
|---|---|---|
| 1 | Internal Cooling Fan Failure | The internal cabinet cooling fan has dropped in RPM or stopped. Check for dirt or physical blocks, or swap out the modular fan assembly. |
| 2 | Inverter Overvoltage (HV) | The internal DC Link voltage surged above safe thresholds. Often caused by rapid axis deceleration combined with a failing regenerative discharge resistor. |
| 5 | Inverter Undervoltage (LV) | Main circuit DC voltage dropped too low. Check the main incoming breaker or look for external input power fluctuations. |
| 8 | Overcurrent Alarm | An excessive current burst flowed into the main drive circuitry. Isolate the motor lines from the unit; if the code clears, check the motor windings for grounds. |
| E | System memory error | The amplifier failed its internal RAM read/write diagnostic checks during power-on initialization. Requires power cycling or control board replacement. |
