Why is my ESC beeping and refusing to arm?

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

Answer: Continuous beeping from an ESC usually signals a problem preventing it from arming. Start by checking your throttle position: most ESCs won’t arm unless the throttle is at its lowest point. Move your transmitter throttle stick all the way down and power on the ESC again. If it still beeps, ensure your ESC is correctly calibrated to your transmitter’s throttle range. To calibrate, disconnect the battery, hold the throttle at maximum, connect the battery, wait for the tones, then move throttle to minimum and wait for confirmation beeps.

Also, inspect your wiring for loose or reversed connections, particularly the signal wire and power leads. Some ESCs beep if they detect a motor or sensor fault, so check motor and propeller condition. Finally, verify your battery voltage is within the ESC’s acceptable range; low voltage can cause beeping and prevent arming. Following these steps should help identify and fix the issue.