I have a Whirlpool GD25DFXFW01 side by side refrigerator. The water dispenser and ice maker have stopped working. I don't know if the water filter can get clogged enough to cause this. My water filter is a long one that mounts into the grill at the base of the refrigerator. The model number of the filter is 4396508. Is there some way to inspect the filter to see if it is causing the problem? Thanks.