Models:   See attached pointer   Serial Numbers All Serial Numbers beginning with Q or S Q = LaVergne Manufacturing; S = Fort Smith Manufacturing   Possible Concern: Control board W10219462 is no longer available as a stand-alone component. The control board is used in KitchenAid and Jenn-Air Built In Refrigerator Units -- SXS Dispenser, SXS Non-Dispenser, 36” Bottom Mount, and 42”French Door Bottom Mount. Potential Cause: Any problem necessitating replacement of Control Board W10219462 Correcti