When the hole is blocked, the defrost water has nowhere to go and will overflow the channel, leading to the dreaded puddle.
If you’ve noticed puddles forming at the bottom of your refrigerator or soggy vegetables in your crisper drawer, you likely have a clogged drain hole. This small opening is essential for directing condensation out of the main compartment and into an evaporation tray. When it gets blocked by food debris or "biofilm" (a slimy mix of mold and bacteria), water has nowhere to go but all over your shelves. how to clean a fridge drain hole