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 sequence or settings. First, check your transmitter throttle stick is fully down and centred; ESCs typically require the throttle to be at zero to arm. Next, verify the battery voltage is within the ESC’s acceptable range—too low or too high can cause warnings. Also, ensure your ESC is calibrated with your transmitter throttle range: this involves powering up the ESC while holding the throttle at max, then lowering it to zero when the beeps change. If your ESC has a safety switch or programming card, confirm no safety features are preventing arming. Finally, inspect all connections for secure solder joints and no shorts. If the ESC still beeps, consult the ESC’s manual for specific beep codes, as different patterns indicate different issues like motor connections or temperature warnings. Following these steps should help you identify and fix the problem so your ESC arms correctly.