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 problem with the arming process. First, ensure your transmitter throttle is at the lowest position before powering on the ESC; most ESCs won't arm if throttle isn't centred or at minimum. Next, check your throttle calibration: many ESCs require a calibration procedure where you power on the ESC with throttle at maximum, wait for beeps, then lower throttle to minimum to set endpoints. Also, verify your ESC is receiving a clean, stable signal from the receiver—loose connections or damaged cables can cause issues. Inspect the battery voltage and wiring to make sure power is sufficient and connections are solid. Finally, consult your ESC manual for specific beep codes, as different patterns can indicate issues like throttle range errors, motor problems, or temperature warnings. Following these steps should help identify and fix why your ESC beeps and won’t arm.