If your refrigerator is leaking water or you have a fridge leaking water on the floor, start by checking the defrost drain first — a frozen or clogged defrost drain is the most common cause and will overflow the drain trough into the cabinet. Thaw any ice and flush the drain with hot water to clear debris. If that does not fix it, inspect the door gasket for tears, twists, or gaps; a bad gasket lets humid air in and causes condensation to run out. Next look for leaks in the water tank assembly; tiny cracks are easy to miss but require replacement rather than glue. Also check the water inlet valve for cracks or loose fittings, then inspect the water filter housing and water filter head for broken housings or missing seals. Small leaks often start inside the cabinet and drip down to the floor, so work from the top down and dry any wet areas before testing. Enter your model number on RepairClinic.com to find the exact replacement part that fits your refrigerator.
01 - Clogged or Freezing Defrost Drain
If the defrost drain is frozen, the water will overflow the drain trough and drip down to the bottom of the compartment. This water can eventually leak onto the floor. Check the defrost drain to determine if it is clogged or frozen. If the defrost drain is frozen, thaw the ice. In addition, flush the drain with hot water to ensure that it is clear of debris.
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02 - Caloric Refrigerator Door Gasket
If a refrigerator is leaking water outside the appliance, it's possible a door gasket is damaged. A door gasket that does not form a proper seal to the refrigerator frame will allow warm humid air to enter the refrigerator or freezer compartment. This can create condensation which can then leak out the gap between the gasket and frame onto the floor. You should inspect the door gasket for any tears or twists and replace the gasket if necessary.
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Inspect the water tank assembly for any leaks. Be aware that the leak may be very small and hard to find. If you discover a leak, replace the water tank. Do not attempt to repair the water tank—glue will not stick properly to the plastic of the tank.
The water inlet valve opens to supply water to the dispenser and icemaker. If the water inlet valve is cracked or has a loose fitting, water will leak from the valve. Inspect the water inlet valve for cracks, and make sure that it is tightly secured to the water supply line.
The water filter head might be cracked, or the seal may be torn or missing. Inspect the water filter housing for cracks. If you discover any cracks in the water filter housing, replace it.