NEED HELP ON MY AC/HEATER Carrier 58STA/STX system?

OK MINE AC SYSTEM IS IN MY ATTIC OF MY HOUSE, IN THE AC SYSTEM THERE A LITTLE TUBE COMING OUT OF IT THAT THROWS COLD AIR BUT MY MAIN PROBLEM IS THAT ITS THROWING WATER OUT OF THE TUBE, that never happened till a month ago pleas help its next to the other tube covered in black foam .