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Interior Lights Flickering On and Off Inside a Sub-Zero


  • Why are the lights inside a Sub-Zero cycling on and off?
  • Lights flicker inside refrigerator or freezer


  • Faulty light switch
  • Issue with control board
  • Issue with electrical supply


  1. Make sure the power cord is securely plugged in to the electrical outlet.
  2. When the unit lights are off, wiggle the unit light switch. If the lights return, see Light Switches.
  3. If these troubleshooting steps do not resolve the issue, service is necessary to expertly diagnose and repair the product. 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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