This happens if you do not connect the Bluetooth controller correctly.  The controller must be wired to the battery with the red (+) and black (-) wires, then connect the blue wire to the blue wire from amplifier. Then connect the 3.5mm to RCA cable from the amplifier to the Bluetooth controller.  Next, pair your audio device with the Bluetooth controller.  (NOTE:  When there is no source connected or music playing for more than 5 minutes, it will shut off the system due to the built in fail-safe.  This helps prevent battery drain but if not connected properly, will cause the system to shut off every 5 minutes.)