From Novak: -
Red status LED on solid & Green LED blinking.
Check input signal harness & motor
sensor harness connections at ESC. Check input signal harness wiring sequence &
connection at throttle channel of receiver. Check throttle channel operation with servo.
Motor sensor harness connected while in Brush-Mode––disconnect sensor harness.
Sometimes a good ol' fashioned reboot works wonders. Go through the one touch set up and start over - 1 minute and you may be up and running again.