If you have a light flashing you have a fault, if you have ice forming all over the shelves in the freezer it sounds like the timer is letting the water in and nothing else. I recently had problems with my Amana (Whirlpool) unit and found the solution at "Acme How To.com". My unit does not have the fault indicator but I found good instructions as to how to trouble-shoot my unit and got it running again. Good Luck, David