Look at the back wall of the fridge interior, near the bottom. You are looking for a small hole (usually about ½ inch wide). It might be covered by a small plastic flap or a screw cap. This is the .
Unusual noises as water struggles to pass through the blocked line. Essential Tools for the Job how to clean fridge drain
Keep flushing with hot water until the water runs clear and flows out the back quickly. If the water backs up and sits in the hole, the clog is deeper. Use a small hand pump (or a burst of air from a bike pump) to force the blockage through. Look at the back wall of the fridge