Why does my ESC keep beeping and refuse to arm?

Question: Why does my ESC keep beeping and not arm?

Answer: Continuous beeping from your ESC usually indicates a safety or connection issue preventing it from arming. First, check your throttle stick or throttle channel on your transmitter; the ESC will not arm if the throttle isn’t at the lowest position. Move the throttle to minimum and try again. Next, ensure your ESC’s signal cable is correctly connected to the flight controller or receiver, with the right orientation. Also, confirm the battery voltage is within the ESC’s acceptable range—too low or too high can cause beeping. If your ESC has a calibration mode, recalibrate the throttle range by following the manufacturer’s steps: usually, power on with throttle full, then lower it once the ESC beeps. Finally, inspect for any fault codes in the ESC manual, as beeping patterns often correspond to specific errors like motor or sensor issues. If none of these steps work, try resetting the ESC or updating its firmware. These checks usually resolve most beeping and arming problems.