Sub-Zero Classic, Designer, 700, 400, 648PRO Drain Tube Clogged


  • How to clean a refrigerator or freezer drain tube that is frozen, clogged, or dirty
  • Is the drain tube accessible in a Classic (formerly Built-In), Designer (formerly Integrated) (IT, ID, and IC), 700, 400, or 648PRO?
  • Water under the crisper drawer or bins or behind crisper drawer
  • What causes water under the crisper in a Classic (BI)?

Steps to Verify Issue:

The drain tube may clog but should not require frequent cleaning.

  1. Make sure door is closing properly and door gasket is in good shape with no rips or tears.
  2. Remove obstructions preventing the door from closing if present. 
  3. Have the door gasket replaced if cracked or torn. 
  4. If a drain tube is clogged in a Classic (formerly Built-In), Designer (formerly Integrated), 700, 400, or 648PRO Series product, it requires Factory Certified Service to clear it. 
  5. If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

See also:

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