| Troubles
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Warning tones
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Causes
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Solutions
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| The ESC didn’t work after it was powered on while the motor kept beeping.
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"BB, BB, BB,....."
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The input voltage was beyond the operation g voltage range of the ESC.
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Adjust the power-on voltage and ensure it’s in the operating voltage range of the ESC.
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| The ESC didn’t work after it was powered on while the motor kept beeping.
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"B–, B–, B–, B–....."
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The ESC didn’t receive any throttle signal from the receiver.
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Check if the transmitter and receiver are well paired, or if any poor connection exists between the ESC and receiver.
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| The ESC didn’t work after it was powered on while the motor kept beeping.
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"B, B, B, B....."
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The throttle stick has not been moved to the bottom position.
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Move the throttle stick to the bottom position and calibrate the throttle range.
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| The ESC didn’t work after the throttle calibration while the motor kept beeping.
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"B, B, B, B....."
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The throttle range you set was too narrow.
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Re-calibrate the throttle range.
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| The ESC output suddenly reduced to 60 % during the flight, the motor kept beeping after the flight was completed but the battery was still connected to the ESC.
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"BB, BB, BB....."
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The ESC thermal protection has been activated.
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Improve the heat-dissipating condition (i.e. add a cooling fan) or reduce the ESC load.
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| The ESC output suddenly reduced to 60 % during the flight, the motor kept beeping after the flight was completed but the battery was still connected to the ESC.
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"BBB, BBB, BBB....."
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The low-voltage cut-off protection has been activated.
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Change another pack. Lower down the cut-off voltage or disable the LVC protection (we do not recommend this).
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