What Causes Sub-Zero Refrigerator Loud Noise?

Sub Zero is the top choice by many homeowners and even businesses regarding refrigerators. Its high-quality, innovative features and stylish designs make it a focal point of your kitchen. 

Sub-Zero refrigerators are made to last. But, throughout its lifespan, you may encounter a Sub-Zero fridge problem due to some of the different factors. It can be through faulty components or poor maintenance. When this happens, a Certified Sub Zero Repair Pros in Denver offers trustworthy Sub Zero Refrigerator Repair Services that you can always rely on. 

The loud or unusual noise is one of a Sub-Zero refrigerator's common problems. This can be seriously an annoying situation. There are several reasons why it happens, and this can be due to an issue with its components or parts, such as a faulty evaporator fan motor, ice build-up, and an obstruction. Determining the main cause of the Sub-Zero refrigerator making noise can be difficult to identify. A few common causes for the Sub-Zero humming noise can be malfunctioning fan motors. 

Since Sub-Zero refrigerators have a separate evaporator fan for their refrigerator and freezer, there is a way to determine which fan can cause the issue. Open the freezer and the refrigerator doors. If the sounds continue after closing the refrigerator doors, the refrigerator evaporator fan is the cause. If you can still hear loud noise whenever the freezer door is closed, the issue lies with the freezer's evaporator fan. 

Damaged or Obstructed Fan Blade

The evaporator fan blows cool air over the evaporator coils to help cool the refrigerant. If the fan's blades are obstructed or damaged, it won't be able to rotate completely. You may notice that your Sub Zero refrigerator is not cooling sufficiently when this happens. If the fan blade is blocked, you may hear the refrigerator making a knocking noise. It is highly recommended to seek a professional repair service to assess the fan and blades and remove any blockages.

Failed Fan Motor

If the evaporator fan blades aren't obstructed, the Sub-Zero refrigerator may make loud noise due to a failed fan motor. The noise will tend to get louder when the refrigerator door is opened. A failed fan motor can't be repaired and must be replaced by a professional repair service.

Accumulated Ice

In some instances, the ice can accumulate on the evaporator fan blades, resulting in the Sub-Zero refrigerator gurgling noise. This often happens if there's a problem with the defrost system that allows the moisture to linger and freeze.

Compressor or Condenser Malfunction

The compressor and condenser components are essential to its function. The compressor helps to circulate the refrigerant by controlling its pressure. The condenser coils and the fan helps keep the refrigerant cool and to be able to create cool air for the refrigerator.