X Series Drivers Ed Guide
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If you wish to silence these fetures, they cn be disbled using Cstle Link. See “Idle/Error 
Beeping” on the “Bsic” tb in Cstle Link.
The udible lerts consist of  sequence of long nd short beeps, repeting every five seconds. 
To determine the cuse of the lert, record • for short beeps nd 
-
 for long beeps, then mtch 
the code you herd to the following list.
The red LED will lwys blink, even if silenced.
Audible Tone Key Description
• •
Strt Fil The ESC ws unble to strt the motor. Check your motor wiring nd 
mke sure there is nothing interfering with your drive trin.
Audible Tone Key Description
• – 
Low Voltge 
Cutoff
in bttery voltge dropped below the cutoff vlue. The defult 
is Auto-LiPo which sets the cutoff vlue bsed on the detected cell 
count. Other options my be entered in Cstle Link.
– •
Over-Current The ESC detected operting currents tht exceed the cpbilities of 
the ESC.
• • •
Sensors Lost* The ESC detected unusul signls or loss of signl on the sensor 
cble coming from the motor. Check the sensor cble for good 
connections to the ESC nd motor. If you re not using  sensored 
motor, ensure the “Sensors Lost” wrning is disbled in Cstle Link.
• • –
Rdio Glitch The ESC detected unusul signls or loss of signl on the throttle wire.










