ORIGINAL: VXL Manual

Fast Blinking Red: Thermal Shutdown Protection Stage 1. If the
motor has lower than normal power and the VXL-3s is hot, the
VXL-3s has entered Stage 1 Thermal Shutdown Protection to
guard against overheating caused by excessive current flow. If
the motor has no power and the VXL-3s is very hot, the VXL-3s
has entered Stage 2 Thermal Shutdown Protection and has
automatically shut down. Let the VXL-3s cool. Make sure your
model is properly geared for the conditions (see page 26).

• Slow Blinking Red (with Low-Voltage Detection on): The
VXL-3s has entered Low-Voltage Protection. When the battery
voltage begins to reach the minimum recommended discharge
voltage threshold for LiPo battery packs, the VXL-3s will limit
the power output to 50% throttle. When the battery voltage
attempts to fall below the minimum threshold, the VXL-3s will
shut down all motor output. The LED on the speed control will
slowly blink red, indicating a low voltage shutdown. The VXL-3s
will stay in this mode until a fully charged battery is connected.