| Trouble
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Possible reason
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Solution
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| After power on, motor can’t work, no sound is emitted, and LED is of
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The ESC doesn’t get its working voltage; Connections between battery pack and ESC are broken.
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Check the battery wires connection or replace the defective connectors.
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| Switch is damaged.
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Replace the switch.
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| After power on, motor can’t work; red LED blinks.
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Throttle signal is abnormal.
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Check the throttle wire connection; make sure it is plugged into the throttle channel of the receiver.
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| Automatic throttle range calibration is failed.
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Set the “TRIM” of throttle channel to 0 or turn the knob to its neutral position.
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| The car runs backward while giving throttle. (The motor runs in the opposite direction)
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The wire connections between ESC and the motor need to be changed.
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Swap two wire connections between the ESC and the motor.
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| The car can’t go backward.
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The jumper position is wrong.
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Check the jumper and plug it to the correct position.
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| The neutral point of throttle channel is changed or drifted.
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Set the “TRIM” of throttle channel to 0 or turn the knob to its neutral position.
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| The car can’t go forward, but can go backward.
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The direction of throttle channel is not correct.
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Reset the direction of throttle channel from original “NOR” to “REV”, or from original “REV” to “NOR”
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| The motor doesn’t work, but the LED in the ESC works normally.
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The connections between motor and ESC are broken.
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Check the connections and replace the defective connectors.
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| Motor is damaged.
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Replace the motor.
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| The motor suddenly stops running while in working state.
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The throttle signal is lost.
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Check the transmitter and the receiver. Check the throttle wire connection.
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| Low voltage cut-off protection or Over-heat cut-off protection has been activated
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Replace the battery pack, or cool down the ESC.
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| The car cannot get top speed and the red LED doesn’t solid on at full throttle
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Some setting in the transmitter are incorrect.
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Check the settings. Set D/R, EPA, ATL to 100% or turn the knobs to maximum value. Set TRIM to 0 or turn the knob to its neutral position.
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| Motor is cogging when accelerated quickly.
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The battery has limited discharge ability
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Use battery with better discharge ability.
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| Motor RPM is too high; the gear ratio is too aggressive.
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Use motor with lower RPM, or use smaller pinion to get softer gear ratio.
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| Something wrong in the driving system of the car.
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Check the driving system of the car.
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