EVERY SO OFTEN; SEVERAL TIMES IN AN HOUR, A NOISE COMES FROM THE REFRIGERATOR. IT SOUNDS LIKE WATER RUSHING THROUGH A HOSE WITH AIR IN IT; THERE IS A FLUTTERING SOUND AT THE END. I HAVE ELIMINATED THE ICE MAKER BY TURNING IT OFF. IT SOUNDS MORE LIKE IT IS COMING FROM THE WATER FILTER AREA. I HAVE BEEN AWAY FOR A WHILE AND DON'T KNOW WHEN THIS STARTED. IT IS A 2 YEAR OLD VCFF136. THANKS, GARY