Translations:KAVAN Alpha V2 1500mm - Instruction manual/195/en
7. Troubleshooting and protection functions
| Troubles | Warning Tones | Causes | Solutions |
|---|---|---|---|
| The ESC didn’t work after it was powered on while the motor kept beeping. | “BB, BB, BB……” | The input voltage was beyond the operating voltage range of the ESC. | Adjust the power-on voltage and ensure it’s in the operating voltage range of the ESC. |
| The ESC didn’t work after it was powered on while the motor kept beeping. | “B-, B-, B-, B-……” | The ESC didn’t receive any throttle signal from the receiver. | Check if the transmitter and receiver are well paired, if any poor connection exists between the ESC and receiver. |
| The ESC didn’t work after it was powered on while the motor kept beeping. | “B, B, B, B……” | The throttle stick has not been moved to the bottom position. | Move the throttle stick to the bottom position and calibrate the throttle range. |
| The ESC didn’t work after the throttle calibration while the motor kept beeping. | “B, B, B, B……” | The throttle range you set was too narrow. | Re-calibrate the throttle range. |
| The ESC output suddenly reduced to 60% during the flight, the motor kept beeping after the flight completed but the battery was still connected to the ESC. | “BB, BB, BB……” | The ESC thermal protection has been activated. | Improve the heat dissipating condition (i.e. add a cooling fan) or reduce the ESC load. |
| The ESC output suddenly reduced to 60% during the flight, the motor kept beeping after the flight completed but the battery was still connected to the ESC. | “BBB, BBB, BBB……” | The low-voltage cutoff protection has been activated. | Change another pack; lower down the cutoff voltage or disable the LVC protection (we do not recommend this). |
1. Start-up Protection: The ESC will monitor the motor speed during the start-up process. When the speed stops increasing or the speed increase is not stable, the ESC will take it as a start-up failure. At that time, if the throttle amount is less than 15%, the ESC will try to restart automatically; if it is larger than 20%, you need to move the throttle stick back to the bottom position first and then restart the ESC. (Possible causes of this problem: poor connection/disconnection between the ESC and motor wires, propellers are blocked, etc.)