Subject: Ice Build-Up in Fan Well Models Affected: BMNF-18 Refrigerators Serial Numbers starting with RA to VG When you find ice accumulated close to the evaporator motor, the cause may be defrost water that penetrates the Styrofoam center divider and then freezes and potentially blocks the fan motor blades. If the drain tube is not obstructed, replace the Styrofoam center divider with Evaporator Housing Kit Part number: WR17X12453   PUB WR00X3040