{"id":18011,"date":"2025-05-20T06:22:04","date_gmt":"2025-05-20T13:22:04","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=18011"},"modified":"2025-05-20T06:22:21","modified_gmt":"2025-05-20T13:22:21","slug":"how-to-fix-a-frozen-defrost-drain-in-your-upright-freezer","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/c\/how-to-fix-a-frozen-defrost-drain-in-your-upright-freezer\/","title":{"rendered":"How to Fix a Frozen Defrost Drain in Your Upright Freezer"},"content":{"rendered":"
<\/div><\/div><\/div>\n

Have issues with ice buildup in your upright freezer’s defrost drain? Finding a huge frozen block preventing your freezer from cooling normally? This frustrating freezer malfunction is likely caused by a problem with the defrost drain system.<\/span><\/p>\n

We\u2019ll cover how the freezer drain and defrost system works, why you may be experiencing a frozen drain, and provide actionable steps to diagnose and fix the issue yourself.<\/span><\/p>\n

If you find out that you need any replacement parts for your appliance<\/span> while you\u2019re troubleshooting, you can enter your <\/span>model number<\/b><\/a> at <\/span>AppliancePartsPros.com<\/b><\/a> to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.<\/span><\/p>\n

The information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer’s documentation or<\/span> contact us<\/b><\/a> with any questions.<\/span><\/em><\/p>\n\n

Freezer drain and defrost system overview<\/span><\/h2>\n

Modern frost-free freezers have a defrost system that prevents ice and frost from accumulating on the cooling coils, known as the evaporator. Ice on the coils would lower the freezer\u2019s efficiency and cooling capability.<\/span><\/p>\n

The Defrost process<\/span><\/h3>\n

The defrost system includes an electric defrost heater and a control mechanism to initiate defrost cycles. During these cycles, the heater warms the evaporator coils to melt any frost that has built up.<\/span><\/p>\n

As the ice melts, the water drains away through the defrost drain. This drain is simply a large hole or tube that channels the water out of the freezer compartment.<\/span><\/p>\n

Drainage typically flows into a pan underneath the refrigerator compartment. Heat from the compressor causes the water to evaporate over time, so it rarely needs to be manually emptied.<\/span><\/p>\n

Keeping the drain flowing<\/span><\/h3>\n

To keep water moving freely through the defrost drain, a drain strap is attached to the defrost heater. The thin metal strap extends into the drain opening.<\/span><\/p>\n

When the heater activates, the strap conducts heat into the drain. This prevents ice from building up and blocking drainage.<\/span><\/p>\n

With this overview of how the defrost and drain systems work, let\u2019s look at what causes freezing issues with the drain itself.<\/span><\/p>\n

Frozen drain causes<\/span><\/h2>\n

If you notice significant frost or ice accumulation on the freezer’s back wall leading down to the floor, the drain is likely blocked. What causes the freezer drain to freeze up?<\/span><\/p>\n

Drain tube blockage<\/span><\/h3>\n

One possibility is a physical blockage within the drain tube. Over time, food particles or other debris could collect in the drain, impeding the flow of water.<\/span><\/p>\n

However, a complete tube blockage is uncommon. The most likely culprit is…<\/span><\/p>\n

Non-functioning or missing drain strap<\/span><\/h3>\n

Issues with the drain strap are the primary reason freezer drains become frozen shut. The heated strap prevents ice from clogging the drain opening when operating properly.<\/span><\/p>\n

But the thin metal strap can deteriorate or fall off over time. Without the heat conduction into the drain, ice quickly builds where water tries to exit.<\/span><\/p>\n

As more water from defrost cycles attempts to drain, it overflows the frozen blockage. Ice keeps accumulating until the entire drain tunnel is a solid chunk of ice.<\/span><\/p>\n

Replacing a worn-out or missing drain strap is the proper repair in most frozen drain situations. Let’s look at how to diagnose and fix this issue.<\/span><\/p>\n

Diagnosis and repair<\/span><\/h2>\n

Repairing a frozen refrigerator drain is straightforward when equipped with the right parts. Follow these steps to safely diagnose and fix the problem yourself:<\/span><\/p>\n

    \n
  1. Start by shutting off the power to the appliance. Locate the electrical outlet or junction box powering the freezer and unplug it.<\/span><\/li>\n
  2. Turning off electricity prevents electric shock hazards while working on the freezer.<\/span><\/li>\n
  3. The freezer drain and drain strap are located behind a removable access panel on the freezer’s rear wall.<\/span><\/li>\n
  4. Carefully pull the panel straight off the back of the freezer. Set the panel aside in a safe place while you work.<\/span><\/li>\n
  5. With the panel removed, thoroughly inspect the drain opening. Look for a small thin strap of metal extending into the drain tube.<\/span><\/li>\n
  6. If the strap is missing or deteriorated, the drain will require a replacement strap to resolve freezing issues.<\/span><\/li>\n
  7. While inspecting, also check if any debris is clogging the drain tube itself. Use a narrow item like a wire coat hanger to clear any blockages.<\/span><\/li>\n
  8. If the existing drain strap is non-functional, install a replacement part. Locate your model number to look up the correct part. Position the new strap so it runs along the drain opening.<\/span><\/li>\n
  9. Attach it to the defrost heater using the provided hardware. Double-check that it is centered in the drain tunnel.<\/span><\/li>\n
  10. With the repair complete, carefully align the back panel on the freezer. Push it straight on until all edges are flush and the panel is securely attached.<\/span><\/li>\n<\/ol>\n

    Restore power\u00a0\u00a0<\/span><\/h3>\n
      \n
    1. Plug the freezer back in and switch the power on. Allow the freezer to run through a full defrost cycle.<\/span><\/li>\n
    2. Monitor the drain tunnel to ensure melting ice water flows out appropriately. No further freezing indicates a successful repair!<\/span><\/li>\n
    3. With a simple drain strap replacement, your freezer drain should now operate as intended.\u00a0<\/span><\/li>\n<\/ol>\n

      Additional information<\/span><\/h2>\n

      Thanks for reading! If you have any other appliance repair needs or projects, you can find other resources and our DIY blog at <\/span>AppliancePartsPros.com<\/span><\/a>. There, you can enter your model number and use our compatibility tool to order the exact parts you need. Most orders arrive in 2-3 business days.<\/span><\/p>\n

      We\u2019re here to help! You can reach our award-winning customer service team at 1-877-477-7278, chat with a pro on our website, and watch thousands of free video tutorials on <\/span>our YouTube channel<\/span><\/a>.<\/span><\/p>\n

      Make sure to follow us on <\/span>Facebook<\/span><\/a>, <\/span>Twitter<\/span><\/a> and <\/span>Instagram<\/span><\/a>!\u00a0<\/span><\/p>\n<\/div><\/section>\n

      \"\"<\/a>

      Troubleshooting Frozen Evaporator Coils in an Upright Freezer<\/a><\/h3><\/span><\/header>
      0 Comments<\/a><\/div>
      \/<\/div>
      Read more<\/span><\/a><\/div><\/div><\/div>