Throttle stick is not at zero. Lower the stick to zero to arm. Fault Conditions

Move throttle to 0% or lower your transmitter throttle trim. Single Beep Intermittent ( beep... beep... beep... )

If you experience issues, perform a factory reset. You can do this with the programming card. With the ESC powered OFF , press and hold the Reset button on the card while turning the ESC on. Or, using the "Set" button on the ESC, hold it for more than 3 seconds with the throttle in neutral until both red and green lights flash.

While specifications vary by model, a typical V2.3 ESC for 1/10 scale cars might have the following ratings:

A: No. 2A is enough for one standard servo and a receiver. For 4 servos, use an external 5V BEC (UBEC) and disconnect the red wire from the ESC's servo plug.