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Sub-Zero Classic Series (BI) Dispenser Chute Door Frozen or Frost on Wall


  • Dispenser chute door or dispenser cup freezes over, will not fully open or close due to ice
  • Dispenser mullion heater assembly frozen
  • Door at top of dispenser chute or near ice bin frozen and will not open or close properly
  • Cup at bottom of dispenser chute frozen or sticking and will not open or close properly
  • Ice, frost, or condensation forming around ice chute for dispenser


  1. Make sure no ice cubes are blocking the mullion chute door from closing properly.
  2. Defrost the affected area. Refer to Manually Defrost a Sub-Zero for instructions.
  3. If these troubleshooting steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

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Need further assistance? Contact Customer Care at 800.222.7820 or provide your information below and request a Customer Care representative contact you.

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