| Blockage Type | Cause | Remedy | |---------------|-------|---------| | Organic slime (biofilm) | Bacteria/mold in moist environment | Vinegar flush + brush | | Frozen plug | Thermostat set too low or faulty defrost timer | Defrost fridge 24h (unplug, doors open) | | Food debris (crumbs, fibers) | Spills not cleaned | Mechanical brush + warm water | | Fat/grease | Dairy or oily spills | Dish soap solution (few drops) + hot water |
Take your pipe cleaner or straightened wire. Gently insert it into the hole. Do not force it; the drain line is usually plastic or rubber. Push it in and out gently to break up the clog. You are essentially performing surgery on a biological blockage—usually a mix of mold and old food particles. how to clean drain hole at back of fridge
To understand how to clean it, you have to appreciate what it does. | Blockage Type | Cause | Remedy |