Hi guys. I have an Guanli A-10 that I have upgraded to a Brushless motor system. two 4040kv motors run by two Tower Pro 20a ESCs. I have the Tower Pro programming Card aswhell. My problem is that I cant seem to program one of the ESCs the other one will program just fine but the Bad one just keeps beeping 3 time in a rising melody. What is the meaning of this melody. Why will it not let me program it.

Also Spectrum 7 Tx and 6cnl Rx and Im running A123 3s

thanks

Trev