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Sub Zero Refrigerator Not Cooling, But The Freezer is Working

It surely seems puzzling when you find that your refrigerator is warm, but the freezer is working and still cold. We will troubleshoot the most plausible reasons why is your Sub Zero refrigerator not cooling but the freezer is working fine. From a defective thermistor to a dirty door gasket, we will give you the signs to crack the case.

Where To Begin When a Sub Zero Refrigerator Not Cooling, But Freezer is Working.

Knowing where to begin is the key to locating almost any solution. We will address common reasons why the Sub Zero refrigerator not cooling, but the freezer seems to be fine. These reasons should implement a simple fix or arrange for repairs. Most manufacturers use more simpler and cheaper refrigeration cooling systems when the refrigerator gets cold air from the freezer. This cooling system is tested for many decades, and it’s also cost-effective for the mass production of appliances.Also, it is cheaper for consumers to purchase an appliance.

Sub Zero refrigerators have a refrigerator cooling system that does not depend on a freezer cooling system. The refrigerator section has its own evaporator coil, fan motor, and even it’s own compressor. Failed compressor in fresh food section will effect only cooling in the fresh food section, and the freezer will keep cooling without any issues.

Below we will look at some of the most common and easy repairs and any home owner with a little technical knowledge can do this repairs at home. 

Sub Zero Evaporator Coils are Frosted 

The evaporator coil transports the refrigerant in cold gas form as it moves from the evaporator to the compressor. Modern refrigerators have a built-in defrosting system that melts any frost that collects on the evaporator coils from this cold refrigerant.

However, if the defrosting system fails, frost may accumulate on the coils. This frost suppresses airflow within the coils, which affects the refrigerator’s temperature. At this point, you will find out that the refrigerator is not cooling, but the freezer is working normally. If the evaporated coils are frosted, we suggest that you call a professional Sub Zero refrigerator repair tech for help. 

The Evaporator Fan Motor is Faulty.

The evaporation system uses a fan that blows cold air through the evaporator coils to help cool the inside of the refrigerator. If this fan fails, either the refrigerator or the freezer can undergo an increase in temperature. If you see these signs, the evaporator fan motor may be the issue for why your refrigerator not cooling and the freezer is working OK. Th fan motor is running loud, the fan blades are not easily rotated manually, or multimeter testing of the motor shows a lack of continuity.

In any of these cases, the fan motor requires a Sub Zero refrigerator repair professional to replace it.

Condenser Coils Need Cleaning

Do you know that you should clean the refrigerator condenser coil annually? This coil is accountable for cooling the refrigerant that produces cold air for the refrigerator. Dusty coils are less able to cool the refrigerant, resulting in a Sub Zero refrigerator not cooling issue. 

 Here is how to clean Sub Zero refrigerator coils that keep refrigerator’s temperature :

  1. Turn off the refrigerator power on the control panel.
  2. Find the condenser coils. Most of them are located behind the front upper grille or lower footrest. Remove the grate or impact plate to access the coils.
  3. The vacuum brush attachment removes all visible dust and lint from the coils. To avoid damaging them, try not to bend the coil blades.
  4. Clean the kick plate or grill.

Turn on the power to the refrigerator on the control panel.

Sub Zero fridge Not cooling and who to call for a Sub zero refrigerator repair. 

If these troubleshooting tips do not solve the mystery of a warm refrigerator and cooling freezer, it might be time for the Sub Zero refrigerator repair specialists. Call All Austin Repair for help with any Sub Zero-related repairs and questions. All Austin Repairs serves cities around the Austin in central Texas. 

The Thermistor is Defective.

The refrigerator thermistor monitors the internal temperature of the refrigerator, reporting its readings to the control panel, which regulates the operation of the compressor and the evaporator fan. If the thermistor is faulty, it may not transmit the correct temperature or transmit any information at all.As soon as this happens, you will notice that your Sub Zero refrigerator not cooling, but the freezer is fine.

This is because the compressor and evaporator do not know when to provide the refrigerator with a large amount of cold air, which leads to an increase in temperature. If multimeter testing of the thermistor detects a lack of continuity, it must be replaced.

Sub Zero refrigerator not cooling? Call All Austin Repairs for help at 512-663-8852
Sub Zero Refrigerator Not Cooling, But The Freezer is Working 5

The Refrigerator Door Gasket is Damaged or Dirty.

A refrigerator door gasket gives a tight seal when the door is closed, keeping cold air and stopping warm air from accessing. If the gasket is damaged or dirty, the door will not seal correctly, even if it stays closed. When this appears, you will find the refrigerator is warm, but the freezer is cold. Check the door gasket for any signs of damage or dirt, like tears or cracks.

While a dirty gasket can be cleaned up with a damp cloth, a damaged gasket requires replacement. Door gaskets typically are easy to replace, but when it comes to Sub Zero, we highly recommend hiring a Sub Zero refrigerator repair tech to fix it for you since its not an easy repair. Please watch the video of the Sub Zero door Gasket Replacement here. 

Sub Zero refrigerator not cooling? Call All Austin Repairs for help at 512-663-8852
Sub Zero Refrigerator Not Cooling, But The Freezer is Working 6

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