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HomeRepair HelpSub Zero Refrigerator RepairSub Zero Refrigerator leaking water Repair
Sub Zero Refrigerator leaking water
If your Sub Zero refrigerator is leaking water onto the floor, start by checking the defrost drain—most leaks are caused by a clogged or frozen defrost drain that overflows the drain trough and runs down into the cabinet. If the drain is iced up, thaw it and flush it with hot water to clear debris. Next inspect the door gasket for tears or twists; a bad gasket lets warm, humid air in and creates condensation that can leak out. After that check the water tank assembly for cracks, then the water inlet valve where the supply line connects, and the water filter housing and filter head for cracked fittings or missing seals. Small, hard-to-find cracks in the tank or filter parts often cause steady drips. If you need replacement parts, enter your refrigerator model number on RepairClinic.com to see the exact part that fits your machine and get step-by-step repair help to stop the leak.
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 - Sub Zero 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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Highly Likely
03 - Sub Zero Refrigerator Water Tank Assembly
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.
Highly Likely
04 - Sub Zero Refrigerator Water Inlet Valve
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.
Highly Likely
05 - Sub Zero Refrigerator Water Filter Housing
Inspect the water filter housing for cracks. If you discover any cracks in the water filter housing, replace the housing.
Highly Likely
06 - Sub Zero Refrigerator Water Filter Head
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.
Highly Likely
Frequently Asked Questions
Why is my refrigerator leaking water onto the floor?
Is a defrost drain clogged causing my refrigerator to leak?
Can a damaged door gasket make my refrigerator leak?
My refrigerator water dispenser not working or is leaking. Could the inlet valve or filter be the problem?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement part?
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