RS2556SH Side by Side - Icemaker not filling; fill... Above model stopped making ice after return

Question

Above model stopped making ice after return from vacation...house water shut off during vacation. Water dispenser works fine. Drained approx 2gal via water dispenser with no "air lock" or sputtering noted. Ran test cycle three times without water filling ice tray...no motor sound noted. Fill tube doesn't appear to be iced over. Any thoughts before calling a repairman?