If you see standing or pooling water in your Sub-Zero refrigerator, the issue could possibly be a clogged drain tube or debris blocking the evaporator drain trough. The evaporator in your Sub-Zero is similar to a car radiator — it removes heat from the refrigerator to be cooled, causing frost to form on the fins. Once the desired temperature is met, the refrigeration system cycles off and the frost drips into the evaporator trough mounted inside the refrigerator.
To check out this issue:
- Locate the evaporator trough and drain tube inside your refrigerator. In most models, removing the crisper drawer and any lower drawers will expose the small trough with the drain tube leading down from it.
- Check the trough and tube to see if it is clogged with dirt or any other material. Any blockage will prevent draining, causing water to overflow into the bottom compartment of your refrigerator.
- Take extra caution in clearing the tube and trough of any debris so that the tube does not rupture.
- If the tube has to be replaced, you or a technician will have to move the entire refrigerator away from the wall. A full-length panel on the back of your refrigerator will have to be removed to expose the tube.