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Is Your Refrigerator Not Defrosting? 5 Causes & Solutions

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Is Your Refrigerator Not Defrosting? Here's What You Need to Know
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Refrigerator Not Defrosting?

A refrigerator that isn’t defrosting can be quite inconvenient. It not only affects the freshness and quality of your food, but it may also result in food deterioration and waste.

If you are experiencing this problem, it is critical that you discover the root reasons and develop appropriate remedies.

In this post, we will look at five typical causes of a refrigerator not defrosting and provide remedies to the problem.

By the end of this guide, you should be able to solve this problem yourself. If not, contact us today to book a same-day fridge repair service with our expert appliance technicians.

Refrigerator Not Defrosting?

Cause 1: Malfunctioning Defrost Timer

One of the leading causes of a refrigerator not defrosting is a malfunctioning defrost timer.

The defrost timer is responsible for regulating the defrost cycle in your refrigerator.

When it malfunctions, it can disrupt the regular defrosting process, leading to ice buildup and reduced cooling efficiency.

Solution: Replacing the Defrost Timer

To resolve this issue, you will need to replace the defrost timer.

Consult your refrigerator’s user manual or contact the manufacturer for specific instructions on locating and replacing the defrost timer.

It is advisable to seek professional assistance if you are not familiar with appliance repairs.

Cause 2: Faulty Defrost Heater

Another possible cause of a refrigerator not defrosting is a faulty defrost heater.

The defrost heater is responsible for melting the ice that accumulates on the evaporator coils during the defrost cycle.

If the defrost heater is defective, it will fail to melt the ice, resulting in ice buildup and impaired cooling performance.

Solution: Checking and Replacing the Defrost Heater

To check if the defrost heater is faulty, you can use a multimeter to measure its continuity.

If there is no continuity, it indicates a defective heater that needs to be replaced.

Consult your refrigerator’s manual or contact a professional technician to ensure proper replacement.

Cause 3: Clogged Defrost Drain

A clogged defrost drain can also lead to a refrigerator not defrosting.

The defrost drain is responsible for carrying melted ice from the evaporator coils to the drain pan.

When it becomes clogged with debris or food particles, the water cannot flow freely, leading to ice buildup and poor defrosting.

Solution: Clearing the Defrost Drain

To clear a clogged defrost drain, you can use a mixture of warm water and mild detergent.

Carefully pour the solution down the drain and use a pipe cleaner or a small brush to remove any obstructions.

Once the drain is clear, the refrigerator should resume its normal defrosting function.

Cause 4: Faulty Defrost Thermostat

Defrost Thermostat Replacement - Refrigerator Not Defrosting

A faulty defrost thermostat can also be the culprit behind a refrigerator not defrosting.

The defrost thermostat is responsible for sensing the temperature of the evaporator coils.

If it fails to detect the proper temperature, it may prevent the defrost heater from activating, leading to ice buildup.

Solution: Testing and Replacing the Defrost Thermostat

To test the defrost thermostat, you can use a multimeter to measure its continuity. If there is no continuity when the thermostat is cold, it indicates a faulty component that needs replacement.

Consult your refrigerator’s manual or seek professional help to ensure the correct installation of the new thermostat.

Cause 5: Inadequate Air Circulation

Air circulation issue - Fridge Not Defrosting

Insufficient air circulation within the refrigerator can hinder the defrosting process.

When the air cannot circulate properly, it can lead to temperature imbalances and ice formation in certain areas, while other parts of the refrigerator remain warm.

Solution: Checking and Rearranging Food Items

To improve air circulation, it’s important to ensure that food items are not blocking the vents inside the refrigerator.

Check for any obstructions and rearrange items accordingly.

Additionally, make sure that the refrigerator is not overfilled, as this can restrict proper airflow.

Conclusion

Dealing with a refrigerator that is not defrosting can be frustrating, but by understanding the common causes and solutions, you can effectively address the issue.

Whether it’s a malfunctioning defrost timer, faulty defrost heater, clogged drain, a defective thermostat, or inadequate air circulation, there are ways to troubleshoot and resolve the problem.

However, if you’re not comfortable with DIY repairs, it’s always advisable to seek professional help to avoid further damage to your appliance.

Remember, a properly functioning refrigerator ensures the freshness and longevity of your food, so don’t delay in addressing the defrosting issue.

Frequently Asked Questions

To further address common concerns about a fridge that is not defrosting properly, here are some frequently asked questions along with their answers:

There can be several reasons for a refrigerator not defrosting, including a malfunctioning defrost timer, faulty defrost heater, clogged defrost drain, faulty defrost thermostat, or inadequate air circulation.

Yes, you can manually defrost your refrigerator by unplugging it and allowing the ice to melt. However, it is recommended to identify and fix the underlying cause to prevent future issues.

The defrost cycle in refrigerators typically runs automatically every 8-12 hours for approximately 15-60 minutes. This frequency may vary depending on the model and brand of your refrigerator.

If you are unsure about troubleshooting or repairing your refrigerator, it is recommended to seek professional assistance. They have the knowledge and experience to diagnose and fix the issue correctly.

Routine Maintenance: Regularly cleaning the condenser coils, ensuring proper ventilation, and addressing any malfunctions promptly are essential preventive measures. Additionally, maintaining a stable room temperature and avoiding overloading the refrigerator can help prevent overheating.

Regularly cleaning the refrigerator, avoiding overloading, and ensuring proper airflow by not blocking vents are some preventive measures to maintain optimal defrosting performance.

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Get a Pro Appliance Repair is now offering a special discount to all our online customers. Get $35 OFF on any appliance repair service.

We value our senior customers and their needs. Therefore, we offer a senior discount of $40 OFF on any appliance repair service.

And that’s not all – if you need two or more appliances installed, you can get $75 OFF on the installation service.

Our team will reach out to you to confirm your appointment after you’ve booked with us. When we connect, don’t forget to confirm that your discount has been applied so you can enjoy the savings we’re offering.

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