3.1.1.12. Status LED description

color
blue	FPGA bitstream status (in normal operation, this LED is turned on, indicating the FPGA bitstream was successfully loaded).
green	power supply status (in normal operation, this LED is turned on, indicating that all power supplies on Red Pitaya are working properly)
red	The heartbeat blinking pattern should show CPU load (in normal operation, this LED is blinking).
orange	SD card access indicator (In normal operation, this LED blinks in slow intervals).