It’s definitely mysterious once you discover that your refrigerator is not cold, but the freezer is still cold. However, like any great movie thriller, you only have to see the signs to figure out the mystery. We will first look into the most possible reasons for a Sub-Zero refrigerator that breaks down, but the freezer is working fine. From a filthy door gasket to a defective thermistor, we will provide you the sign to close the case.
Filthy or Defective Door Gasket
The door gasket gives a tight seal if the door is shut off, holding the cold air in and keeping the warm air from getting in. When the gasket is filthy or defective, the door won’t cover properly despite when it stays sealed. Once this occurs, you’ll find the freezer cold, but the refrigerator warm.
Examine the door gasket for some accumulated dirt or incurred damage such as cracks or holes. While a filthy gasket can be cleared with a wet cloth, a defective gasket needs replacement.
Frosted Evaporator Coils
Evaporator coils deliver refrigerant in a gaseous, cold form as it circulates from the evaporator to the compressor. The latest refrigerators come in a built-in defrost system that thaws any frost accumulated on the evaporator coils from the refrigerant.
But when the defrost system breaks down, frost can build up on the coils. This frost blocks airflow inside the coils that affect the temperature of the refrigerator. In this case, you’ll observe that the refrigerator is warm, but the freezer is cold. When the evaporator coils are frozen over, we highly recommend that an expert evaluates the defrost system to identify the malfunction.
Damaged Evaporator Fan Motor
The Sub-Zero evaporator system utilizes a fan that releases the cool air over the evaporator coils to help cool the interior part of your refrigerator. When this fan breaks down, either the freezer or refrigerator can go through a spike in temperature.
Once you see these glaring signs, the evaporator fan motor may be the problem for the reason your Sub-Zero refrigerator won’t get cold but freezer will:
- fan motor makes some noise
- fan blades are hard to turn
- multimeter testing shows a lack of regularity
Faulty Unit Thermistor
The thermistor checks the internal temperature of your Sub-Zero refrigerator, translating its data to the control board that controls the compressor and evaporator fan. When the thermistor is faulty, it won’t translate the appropriate temperatures or deliver any data at all.
When this occurs, you’ll observe that your Sub-Zero refrigerator is not cooling, however, the freezer works fine. This is due to the compressor and evaporator that do not have the information when to give the refrigerator colder air, resulting in the spike of temperatures. When the multimeter testing shows a lack of regularity, it already requires to be replaced.
Once this troubleshooting does not work to solve the mystery of a malfunctioning refrigerator, it’s high time to seek Sub Zero refrigerator repair experts. Contact Sub Zero Appliance Repair to carry out any repair or maintenance service. Also, check out Sub Zero ice maker repair and Sub Zero refrigerator repair in Miami.