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 setup issue. First, check that your throttle stick is at the lowest position; ESCs won’t arm if they detect throttle input. Next, ensure your transmitter and receiver are properly bound and that throttle calibration has been done—this involves powering up the ESC with the throttle at max, then lowering it to minimum as per your ESC manual. Also, verify the battery voltage is adequate; low voltage can cause beeping warnings. Inspect all wiring for loose connections or shorts, especially the signal wire from your flight controller or receiver to the ESC. If you recently changed ESC firmware or settings, try resetting to default. Lastly, some ESCs beep if the motor is blocked or there’s a mechanical issue, so make sure the propeller or motor shaft spins freely. Following these steps should resolve the beeping and allow your ESC to arm safely.