Your refrigerator has a drain that leads to the exterior drain pan beneath the refrigerator. Occasionally this drain can become clogged resulting in standing water inside your refrigerator. A similar drain exists in the freezer, which when clogged results in ice build up on the floor of the freezer.
Caution: Before clearing the drain tube, unplug the refrigerator or shut off the power at the fuse box or breaker panel to avoid an electrical shock hazard.
The drain is located either on the floor of the refrigerator, beneath the vegetable crisper, or in the wall behind a drain funnel.
Clear the drain by forcing a solution of water and bleach or water and baking soda into it with a basting syringe. If the solution will not flow through, slide a length of 1/4 inch or smaller flexible tubing into the drain tube to push the clog through to the drain pan. Remove the tubing after clearing the clog.