If you have a combined fridge/freezer in your home, then you might think that problems will affect the whole appliance. However, this isn't always the case. Sometimes, one part of the unit stops working correctly while the other works OK.
For example, you might find that your fridge isn't cold any longer; however, your freezer is still at the right temperature. While you can sometimes fix this fault, say by cleaning the unit's coils or vents, problems with other parts need a professional repair. What might be the cause of this temperature problem?
1. Thermistor Failure
Refrigerators contain a thermistor. This part monitors and controls the temperature in the fridge.
So, for example, if your fridge is too warm, then its thermistor should start its compressor to cool it down. If your thermistor is faulty, then it might not register internal temperatures correctly or at all. Your fridge will be too warm inside because the thermistor has failed.
2. Evaporator Fan Motor Problems
Evaporator fans take cold air from their system's coils and then pass it to the fridge and freezer units. These fans sometimes fail because of problems with their motors.
If the fan's motor stops working completely, then your fridge and freezer will both warm up. The fan can't pass any cold air through the appliance.
However, if a motor has a fault but still partly works, then it might focus on cooling your freezer over your fridge. Your freezer will still freeze but your fridge will be too warm.
3. Damper Control Assembly Malfunctions
The damper control assembly in your fridge/freezer also helps circulate air through the appliance. It ensures that each part gets the right levels of cold air at any given time.
Basically, this part assesses how much cold air to pass from your freezer to your fridge. This is a fine balance between keeping the freezer at safe frozen temperatures and the fridge at safe cool temperatures.
If this part gets blocked, then air from the freezer can't pass through to the fridge. If it is damaged, then it might not be able to maintain the right temperature in each part of your appliance.
4. Defrost System Faults
If your fridge/freezer has an automatic defrost system, then it can cause problems in your fridge if it develops a fault. For example, if the function works too hard, it can ice up your fridge's evaporating coils. They won't be able to get enough cold air into your fridge.
For more information, contact refrigerator repair companies. They can take a look at your problem and get your fridge working as well as your freezer again.
