Why is my ESC beeping and refusing to arm?

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

Answer: Continuous beeping from your ESC usually indicates it is not receiving the correct arming signal or there is a safety issue. First, ensure your transmitter and receiver are properly bound and the throttle stick is fully down (minimum position). Many ESCs won’t arm if throttle isn't at zero. Next, check the ESC calibration: disconnect the battery, power up the transmitter, hold the throttle at max, then reconnect the battery. Wait for the beeps and lower the throttle to zero to complete calibration. Also, inspect your battery voltage; low voltage can cause beeping and prevent arming. Confirm all motor and ESC connections are secure and correctly soldered or plugged in. If your ESC has a safety feature, such as temperature or voltage warnings, make sure it’s not overheating or undervoltage. Finally, review the ESC manual for specific beep codes, as different patterns mean different issues. Following these steps should help you identify and resolve why your ESC keeps beeping and won’t arm.