Why Is My Sub-Zero Refrigerator Leaking Water?

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The quality construction and technology of Sub-Zero appliances rarely result in repairs, though issues may arise from time to time. What should you do if you find your Sub-Zero refrigerator leaking water? It may be due to a loose or damaged water line, requiring tightening or replacement. Find out more about what causes a refrigerator to leak water and how to fix the problem.

Troubleshooting a Sub-Zero Refrigerator Leaking Water

Though the source of leaks may seem mysterious, there are several common causes with specific fixes. We’ll review the most likely reasons for a Sub-Zero refrigerator leaking water to determine if a professional repair is necessary.

Problem With Water Line

Is your refrigerator leaking water on the floor? This usually indicates a problem with the water line or your home plumbing connection. To inspect the water line, turn off your home’s water supply valve and unscrew the kickplate at the bottom of the refrigerator.

Here’s how to assess water line leaks:

  1. Water leaking from water inlet hose connections: Tighten the connections and secure the hose if it appears loose.
  2. Water leaking from damaged inlet hose: A damaged hose requires professional replacement.
  3. Water leaking from home plumbing: Leaks from your home plumbing should be addressed by a plumber.

Defective Water Inlet Valve

If your water line and home plumbing connections aren’t the source of leaks below the refrigerator,  it may be the water inlet valve. This valve opens and closes to allow your home’s water supply to enter the refrigerator. If it’s defective you’ll find your Sub-Zero refrigerator leaking water directly from the valve, requiring professional replacement.

Damaged Drain Pan

Leaks from underneath the refrigerator can also be due to a damaged drain pan. Make sure the pan is level and properly installed. However, water leaking from Sub-Zero refrigerator drain pans can occur if the pan is cracked or broken. A damaged pan requires replacement.

Faulty Sub-Zero Water Filter

A Sub-Zero water filter leaking more than a few drops may indicate filter damage. Remove the filter from its compartment, making sure the o-rings are in place and that it’s not cracked or broken. If damage is visible, replace the filter with a new one. 

If the filter doesn’t appear damaged and the o-rings are in place, reinsert it into the compartment. Make sure you know how to change a Sub-Zero water filter correctly to avoid damage or leaks. If leaking continues, a professional assessment may be necessary.

refrigerator-leaking-water-on-the-floor
Photo Credit: Sub-Zero via YouTube

Moisture From Condensation

Is your Sub-Zero refrigerator leaking water from excessive condensation? If so, there could be several causes.

Here’s how to troubleshoot condensation in the refrigerator:

  1. Refrigerator door was left open: Warm air can create excessive moisture. Keeping the door closed should resolve the issue.
  2. Crisper drawer settings need adjusting: If a drawer has a humidity setting that’s too high it could result in condensation. Lower the setting to decrease moisture.
  3. Damaged door gasket: Problems with the gasket can allow warm air to enter the refrigerator. While dirt can be wiped away, a damaged gasket requires replacement.
  4. Dirty Condenser Coils: Ice or condensation on the refrigerator’s back wall may be due to dirty condenser coils. Clean the coils to remove the buildup and  improve Sub-Zero cooling performance.

Clogged Ice Maker

If you notice your Sub-Zero ice maker leaking, first make sure the ice bin is properly aligned on its rails. If the bin is installed correctly, leaks are likely due to ice jams in the ice maker assembly. Try to remove any visible obstructions with your hands. If that’s not possible, the freezer may require manual defrosting to melt the ice jams. Continual ice maker leaks require professional assessment.

The team at Appliance Service Station are your refrigerator experts. Call us for any Sub-Zero refrigerator service.

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