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How To Unlock Sub Zero Fridge

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When it comes to high-end refrigeration, Sub-Zero is a brand that stands out for its superior quality, design, and functionality. However, like any other appliance, you may encounter some common issues such as the fridge getting locked or the dispenser becoming unresponsive. In this comprehensive guide, we will walk you through the steps on how to unlock a Sub Zero fridge, the common reasons why it might become locked, safety precautions to consider, and what to do when the standard procedures don’t work.


Unlocking a Sub-Zero fridge is a simple process. For Sub-Zero Classic (BI) models, press and hold the Light button for 5 seconds. The same goes for Sub-Zero Models 685 and 695. If the dispenser does not unlock, try turning the home circuit breaker to the unit off for 30 seconds and back on again. If it’s still locked, contact a Factory Certified Service provider.

Why Is Your Sub-Zero Fridge Locked?

There are several reasons why a Sub-Zero fridge might become locked or unresponsive:

  1. Control Panel Issues: The electronic control panel might malfunction, requiring professional service to diagnose and repair the product.
  2. Dispenser Lock: The dispenser lock might be enabled, disabling the water and ice dispensing features.
  3. Sabbath Mode: The fridge might be in Sabbath mode, which disables certain features.
  4. Door Vacuum: The airtight seal of Sub-Zero fridges can create a strong vacuum, making the door difficult to open.
  5. Power Issues: A power cycle might be needed to reset the fridge.

How to Unlock a Sub-Zero Fridge

Unlocking your Sub-Zero fridge is a straightforward process:

  1. For Sub-Zero Classic (BI) models: Press and hold the Light button for 5 seconds.
  2. For Sub-Zero Models 685 and 695: Press and hold the Light button for 5 seconds.

If the dispenser does not unlock using the steps above, try turning the home circuit breaker to the unit off for 30 seconds and back on again. If the unit is still locked, it’s time to contact a Factory Certified Service provider.

Safety Precautions

Safety is a priority when handling any appliance. Here are some safety precautions to consider:

  1. Wear Protective Gear: Always have gloves on to prevent injuries.
  2. Read the User Manual: Familiarize yourself with the user manual provided by Subzero.

Common Mistakes and How to Avoid Them

Some common mistakes include not pressing the correct button or not holding the button long enough. To avoid these, ensure you follow the correct procedure for unlocking the dispenser. Also, ensure the fridge door is properly closed and not obstructed by any items, as this can cause performance issues.

What If Standard Procedures Don’t Work?

If the standard unlocking procedures don’t work, it’s time to seek professional help. You can do so by contacting a Factory Certified Service provider in your area using the Factory Certified Service Locator on the Sub-Zero website. Alternatively, you can call their customer care team at 1-800-222-7820 for assistance.

Does Unlocking Impact Warranty?

Unlocking your Sub-Zero fridge will not impact its warranty. However, tampering with the fridge in ways not recommended by the manufacturer could potentially void the warranty.


Unlocking your Sub-Zero fridge is a relatively simple process that requires no specific tools. However, if you encounter difficulties, don’t hesitate to reach out to a Factory Certified Service provider for assistance. Remember, safety comes first, so always follow the manufacturer’s instructions and precautions.

Frequently Asked Questions

What is the Sabbath mode on a Sub-Zero fridge?

The Sabbath mode is a feature in Sub-Zero fridges that, when activated, disables certain features in observance of the Jewish Sabbath and other religious holidays. It turns off the interior lights and the control panel light, and it prevents the compressor from turning on when the door is opened.

What’s the purpose of the dispenser lock on my Sub-Zero fridge?

The dispenser lock on your Sub-Zero fridge is a safety feature designed to prevent accidental dispensing of water or ice, especially when cleaning the control panel or to prevent misuse by children.

What is a Factory Certified Service provider?

A Factory Certified Service provider is a professional service provider authorized by Sub-Zero to perform maintenance and repairs on their appliances. These providers have undergone specific training and use genuine Sub-Zero parts.

How often should I power cycle my Sub-Zero fridge?

There’s no specific frequency for power cycling your Sub-Zero fridge. It’s usually done when there’s an issue with the fridge’s functionality, like an unresponsive control panel or a locked dispenser. Always refer to your user manual or consult with a Factory Certified Service provider if you’re unsure.

What other issues might cause my Sub-Zero fridge to lock?

Other potential issues that might cause your Sub-Zero fridge to lock include a faulty door seal, a malfunctioning control board, or issues with the wiring or power supply. If you’ve tried the standard unlocking procedures and the fridge remains locked, it’s best to contact a Factory Certified Service provider for assistance.

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