Step-by-Step Instructions for Troubleshooting and Repairing a Refrigerator That Won't Defrost

Refrigerator not defrosting? Troubleshoot common issues like faulty defrost timer, dirty condenser coils, and malfunctioning defrost heater. Learn how to fix your refrigerator and maintain optimal performance.

Anthony Arphan
January 1, 1
28 min read

If you’ve noticed that your refrigerator isn’t defrosting properly, it can be a frustrating problem to deal with. A refrigerator not defrosting can lead to a buildup of ice in the freezer, which can impact the overall cooling efficiency of your appliance. However, before you rush to call a professional, there are a few steps you can take to troubleshoot and fix the problem yourself.

Step 1: Check the defrost timer. The defrost timer controls when and how long the defrost cycle occurs. If it becomes faulty, the refrigerator may not defrost as it should. Locate the defrost timer, which is usually found near the temperature control panel or in the bottom area of the refrigerator. Use the manufacturer’s manual to identify the timer and then check if it is functioning properly.

Step 2: Inspect the defrost heater. The defrost heater is responsible for melting the frost and ice that accumulates on the evaporator coils. If the defrost heater is faulty or has become burned out, it won’t be able to perform its function. Use a multimeter to test the continuity of the defrost heater. If it doesn’t have continuity, it needs to be replaced.

Step 3: Examine the defrost thermostat. The defrost thermostat monitors the temperature of the evaporator coils and initiates the defrost cycle when necessary. If the thermostat is defective or stuck in the open position, it won’t signal the defrost cycle to begin. Test the thermostat for continuity using a multimeter. If it fails the continuity test, it will need to be replaced.

Step 4: Check the defrost control board. The defrost control board is responsible for controlling the timing and duration of the defrost cycle. If the control board becomes defective, it may prevent the refrigerator from defrosting properly. Inspect the control board for any signs of visible damage, such as burnt components or loose connections. If you notice any issues, the control board will likely need to be replaced.

By following these step-by-step instructions, you’ll be able to troubleshoot and fix a refrigerator that’s not defrosting. However, if you’re unsure or uncomfortable with performing these repairs yourself, it’s always best to seek the help of a professional appliance repair technician.

Check the Thermostat

If your refrigerator is not defrosting, one of the first things to check is the thermostat. The thermostat controls the temperature inside the refrigerator and freezer compartments. If it is not functioning properly, it may be preventing the defrost cycle from activating.

Start by checking the temperature settings on the thermostat. Make sure it is set to the proper temperature for both the refrigerator and freezer compartments. If the settings are too low, the defrost cycle may not activate.

Next, check the thermostat for any signs of damage or wear. Look for loose or frayed wires, as well as any melted or burned areas. If you notice any issues, the thermostat may need to be replaced.

Another way to check the thermostat is to use a multimeter to test its continuity. Set the multimeter to the ohms setting and attach the probes to the thermostat’s terminals. If the multimeter shows a reading of zero ohms, the thermostat is functioning properly. If it shows a reading of infinity, the thermostat is faulty and needs to be replaced.

Checking the thermostat is a relatively simple step that can help identify the problem if your refrigerator is not defrosting. By ensuring that it is set correctly and functioning properly, you can eliminate it as a possible cause and move on to the next troubleshooting steps.

Ensure the Thermostat is Set Correctly

One of the first things to check when troubleshooting a refrigerator that is not defrosting is the thermostat settings. The thermostat controls the temperature inside the refrigerator and freezer compartments. If the thermostat is not set correctly, it can cause the refrigerator to not defrost properly.

Start by checking the thermostat controls. Ensure that the temperature settings are set to the correct levels. The ideal temperature for most refrigerators is between 37 to 40 degrees Fahrenheit (3 to 4 degrees Celsius). If the thermostat is set too low, it can lead to a buildup of frost and ice, preventing the refrigerator from defrosting correctly.

If the thermostat controls appear to be working correctly, you can also try adjusting them slightly to see if it makes a difference. Increase the temperature setting by a few degrees and then monitor the refrigerator over the next 24 hours to see if it starts to defrost.

Remember to unplug the refrigerator before making any adjustments to the thermostat settings.

If adjusting the thermostat does not resolve the defrosting issue, it could indicate a problem with the thermostat itself. In this case, it may be necessary to replace the thermostat or contact a professional for further diagnosis and repair.

Always refer to the manufacturer’s instructions and guidelines when adjusting or replacing any part of your refrigerator.

Test the Thermostat for Faults

If your refrigerator is not defrosting, one possible cause could be a faulty thermostat. The thermostat is responsible for regulating the temperature inside the refrigerator, including when it goes into the defrost cycle. To test the thermostat for faults, follow these steps:

Step 1: Unplug the refrigerator

Before starting any testing or repairs, always make sure to unplug the refrigerator from the power source to avoid any potential electrical hazards.

Step 2: Locate the thermostat

The thermostat is typically located behind the control panel or inside the refrigerator near the evaporator coils. Refer to your refrigerator’s manual for the exact location.

Step 3: Remove the thermostat

Once you have located the thermostat, carefully remove it from its mounting or disconnect any wires connected to it. Take note of the position of the thermostat and any wire connections.

Step 4: Test for continuity

Using a multimeter set to the ohms setting, test for continuity between the thermostat’s terminals. The multimeter should display a reading of zero or close to zero ohms if the thermostat is functioning properly. If there is no continuity or a very high resistance reading, the thermostat is likely faulty and needs to be replaced.

Step 5: Replace the thermostat (if necessary)

If the thermostat fails the continuity test, it will need to be replaced. Consult your refrigerator’s manual or contact the manufacturer for the correct replacement part. Install the new thermostat by following the previous steps in reverse order, making sure to reconnect any wires and mount it securely.

Note: If you are not experienced with electrical repairs, it is recommended to consult a professional technician to perform the thermostat testing and replacement.

By testing the thermostat for faults, you can determine if it is the cause of your refrigerator not defrosting. If the thermostat is still functioning properly, you may need to troubleshoot other components such as the defrost timer or defrost heater to identify the issue and fix it accordingly.

Clean the Condenser Coils

One common cause of a refrigerator not defrosting properly is dirty condenser coils. Over time, dust and debris can accumulate on the coils, preventing them from efficiently dissipating heat. This can lead to the condenser working harder and becoming less effective at defrosting the refrigerator.

To clean the condenser coils, start by unplugging the refrigerator to ensure your safety. Locate the coils, which are usually found at the back of the refrigerator or sometimes underneath it. Use a vacuum cleaner with a soft brush attachment or a coil cleaning brush to gently remove any dust or debris from the coils. Be sure to brush in the direction of the fins to avoid bending them.

In addition to cleaning the coils, it’s also a good idea to check the surrounding area for any obstructions. Make sure there are no objects blocking the airflow around the coils, such as boxes, furniture, or curtains. This will allow the coils to properly release heat and help the refrigerator defrost more effectively.

Once you have finished cleaning the coils and ensuring proper airflow, plug the refrigerator back in and monitor its performance over the next few days. If the refrigerator continues to have defrosting issues, there may be another underlying problem that requires professional attention.

Locate the Condenser Coils

One of the possible causes for a refrigerator not defrosting is dirty or blocked condenser coils. The condenser coils are responsible for releasing the heat from the refrigerator and they need to be clean in order to function properly. Locate the condenser coils, which are typically located either on the back or on the bottom of the refrigerator.

You may need to move the refrigerator away from the wall or remove the bottom kickplate to access the coils. If the coils are located on the back, you can usually spot them easily. If they are located on the bottom, you may need to remove a panel or grille to access them.

Once you have located the condenser coils, visually inspect them to check for any signs of dirt, debris, or blockage. If the coils appear dirty, use a vacuum cleaner with a brush attachment or a coil brush to gently remove any dust or debris. Be careful not to damage the coils while cleaning.

In addition to cleaning the condenser coils, it is also important to check for any obstructions that may be blocking the airflow to the coils. Remove any objects or items that might be blocking the coils or restricting the airflow.

After cleaning the condenser coils and removing any obstructions, replace any panels or grilles that were removed and move the refrigerator back into its original position. Plug the refrigerator back in and monitor if the defrosting issue has been resolved.

Remove Dirt and Debris from the Coils

One common reason for a refrigerator not defrosting is the accumulation of dirt and debris on the coils. Over time, dust, pet hair, and other debris can build up on the coils, preventing them from dissipating heat effectively. As a result, the refrigerator may not be able to maintain the proper temperature, leading to ice buildup and frost.

To fix this issue, you will need to remove the dirt and debris from the coils. Here’s how you can do it:

Locate the coils: Depending on the model of your refrigerator, the coils can be found either behind or underneath the appliance. They are usually black in color and have a ridged or grid-like appearance.
Unplug the refrigerator: Before you start cleaning the coils, ensure that the refrigerator is unplugged from the power source. This will prevent any accidental electrical shock.
Use a vacuum cleaner or a brush: Once the refrigerator is unplugged, use a vacuum cleaner with a brush attachment or a soft brush to gently remove the dirt and debris from the coils. Take care not to damage the coils while cleaning.
Clean hard-to-reach areas: If there are any stubborn areas with stubborn dirt or debris, you can use a coil cleaning brush or a toothbrush to gently scrub the coils. Be careful not to apply too much pressure to avoid damaging the coils.
Vacuum the surrounding area: After cleaning the coils, vacuum the area around the refrigerator to remove any loose dirt or debris that may have fallen during the cleaning process.

Once you have removed all the dirt and debris from the coils and the surrounding area, you can plug the refrigerator back in and check if the defrosting problem has been resolved. By regularly cleaning the coils, you can prevent future build-up and ensure that your refrigerator operates efficiently.

Replace the Defrost Timer

If your refrigerator is not defrosting, one possible cause could be a faulty defrost timer. The defrost timer controls the regular defrost cycle of the refrigerator, ensuring that the evaporator coils do not become covered in frost. Over time, the defrost timer can wear out or become stuck, preventing the defrost cycle from occurring.

To replace the defrost timer, follow these steps:

Unplug the refrigerator: Before starting any repair work, always unplug the refrigerator from the power source to avoid any risk of electric shock.
Locate the defrost timer: The defrost timer is typically located in the refrigerator’s control panel or the freezer compartment. Refer to your refrigerator’s manual or the manufacturer’s website for specific instructions on where to find the defrost timer in your model.
Remove the defrost timer: Once you have located the defrost timer, gently pull it out or remove any screws holding it in place. Take note of the placement of the wires connected to the defrost timer for easier installation of the new one.
Replace with a new defrost timer: Purchase a replacement defrost timer that is compatible with your refrigerator model. Connect the wires to the new defrost timer in the same configuration as the old one and secure it in place.
Test the defrost timer: Plug the refrigerator back in and monitor its operation. If the defrost cycle initiates and the evaporator coils start defrosting, then your problem should be resolved. If not, there may be other underlying issues causing the defrosting problem.

Replacing the defrost timer should only be done if you have experience working with electrical systems. If you are unsure or uncomfortable with performing this repair, it is recommended to seek the assistance of a professional appliance technician.

Note: It is always best to refer to your refrigerator’s manual or consult the manufacturer for specific instructions on how to replace the defrost timer in your particular model.

Identify the Defrost Timer

The defrost timer is an essential component of a refrigerator’s defrosting system. It controls when the defrost cycle starts and ends. To identify the defrost timer, you need to locate it within your refrigerator, which can vary depending on the model.

1. Consult your refrigerator’s manual: The first step is to refer to your refrigerator’s manual or user guide, which provides valuable information on the location of the defrost timer. It may also include a diagram or schematic of the refrigerator’s components, making it easier to find the defrost timer.

2. Look for a control panel: In some refrigerators, the defrost timer is located on a control panel on the front or back of the refrigerator. It may be labeled as “defrost timer” or “timer.” Check any visible control panels for a timer or switch related to the defrost cycle.

3. Check behind the kickplate: The kickplate is the removable panel at the bottom of the refrigerator. Remove the kickplate by unscrewing any fasteners or simply pulling it off, if it is a snap-on design. The defrost timer may be attached to the back of the kickplate or mounted on the refrigerator’s frame.

4. Look in the refrigerator compartment: In some refrigerators, the defrost timer is located inside the refrigerator compartment, usually near the temperature control settings. Check the walls or ceiling of the refrigerator for a small plastic or metal box that houses the defrost timer.

5. Look for a white or transparent box: The defrost timer can be identified by its appearance. It is typically a small, rectangular box with wires or connectors attached to it. It may be white or transparent, and it may have a manual dial or digital display to set the defrost cycle.

Once you have identified the defrost timer, you can proceed with troubleshooting and potentially replacing it if necessary. Keep in mind that if you are unsure or uncomfortable handling electrical components, it is best to consult a professional technician for assistance.

Remove and Replace the Defrost Timer

If your refrigerator is not defrosting correctly, one possible cause could be a faulty defrost timer. The defrost timer controls the timing of the defrost cycle, allowing the refrigerator to periodically melt any frost or ice buildup on the evaporator coils. If the defrost timer is not working properly, it can result in excessive frost buildup, which can affect the cooling performance of your refrigerator.

To remove and replace the defrost timer, follow the steps below:

Unplug the refrigerator from the power outlet to ensure your safety.
Locate the defrost timer. It is usually located at the back of the refrigerator, near the compressor. Refer to your refrigerator’s manual for specific instructions and diagrams.
Take note of the wire connections on the defrost timer. You may want to take a picture or make a diagram for reference when reconnecting the wires later.
Using a screwdriver, remove the screws or clips that hold the defrost timer in place.
Carefully disconnect the wires from the defrost timer, making sure not to damage the connections.
Take out the old defrost timer and replace it with a new one of the same make and model.
Reconnect the wires to the new defrost timer, using your reference picture or diagram.
Secure the new defrost timer in place by tightening the screws or reattaching the clips.
Plug the refrigerator back into the power outlet.
Turn the defrost timer to the appropriate setting according to your refrigerator’s manual.

Once the defrost timer is replaced, monitor your refrigerator to see if the defrosting issue is resolved. If the problem persists, it may be necessary to consult a professional technician for further diagnosis and repair.

Remember, when working with electrical components of your refrigerator, always prioritize safety and consider seeking professional assistance if you are unsure about any steps.

Check the Defrost Heater

The defrost heater is responsible for melting the frost and ice that accumulates on the evaporator coils in the freezer compartment. If the defrost heater is not working properly, it can cause the refrigerator to not defrost properly, leading to a range of issues such as temperature inconsistency and water leakage.

To check the defrost heater, you will need to access the evaporator coils. Start by unplugging the refrigerator and emptying the freezer compartment. Remove any shelving or drawers that may be blocking your access to the coils.

Once you have clear access to the coils, locate the defrost heater. It is usually a metal or glass tube that runs along the bottom or sides of the coils. Look for any visible signs of damage such as burns or breaks in the heater coils. If you notice any damage, the defrost heater will need to be replaced.

If the defrost heater appears to be in good condition, you can use a multimeter to test its functionality. Set the multimeter to the ohms setting and touch the meter’s probes to the two terminals of the defrost heater. If the meter reads zero or close to zero, this indicates that the defrost heater is working properly. However, if the meter does not show any reading or shows a very high resistance, this indicates that the defrost heater is faulty and needs to be replaced.

Replacing the defrost heater involves disconnecting any electrical connections and removing any mounting brackets or screws that may be holding it in place. Consult your refrigerator’s manual or manufacturer’s instructions for specific guidance on replacing the defrost heater.

Once the new defrost heater is installed, reassemble the freezer compartment and plug the refrigerator back in. Monitor the refrigerator over the next few days to ensure that it is defrosting properly and that the temperature is consistent.

If after following these steps the refrigerator still does not defrost properly, it is recommended to seek professional help from a refrigerator repair technician to diagnose and fix the issue.

Access the Defrost Heater

Before you can fix a refrigerator that’s not defrosting, you need to access the defrost heater. The defrost heater is typically located near the evaporator coils in the freezer compartment. To access it, you’ll first need to unplug the refrigerator and empty out the freezer.

Next, remove any shelving or drawers that may be blocking your access to the back panel of the freezer. Depending on your model, you may need to remove screws or clips that are holding the panel in place. Use a screwdriver or a socket wrench to carefully remove these fasteners.

Once the back panel is removed, you should be able to see the defrost heater. It is a metal component with wires attached to it. Take note of the location and orientation of the defrost heater so that you can properly reinstall it later.

Inspect the defrost heater for any signs of damage or malfunction. Look for any broken or burnt-out sections of the heater. If the heater appears to be damaged, it will need to be replaced. You can order a new heater from the manufacturer or purchase one from a local appliance parts store.

If the defrost heater looks to be in good condition, you may want to test it for continuity using a multimeter. This can help determine if the heater is working properly. Follow the instructions on the multimeter to perform the continuity test.

Once you have accessed and inspected the defrost heater, you can move on to the next step in fixing your refrigerator that’s not defrosting.

Test the Defrost Heater for Continuity

The defrost heater is responsible for melting the frost and ice that builds up on the evaporator coils in your refrigerator. If the defrost heater is not working properly, it can cause the coils to freeze over, resulting in a refrigerator that is not defrosting properly.

To test the defrost heater for continuity, follow these steps:

Unplug the refrigerator from the power outlet to ensure your safety.
Locate the defrost heater, which is usually found beneath the evaporator coils.
Using a multimeter set to the continuity or ohms setting, touch one probe to each terminal of the defrost heater.
If the multimeter shows a reading close to zero or a tone sounds, then the defrost heater has continuity and is functioning properly.
If the multimeter shows no reading or an infinite reading, then there is no continuity in the defrost heater and it needs to be replaced.

Note: Before replacing the defrost heater, it is important to make sure that it is the problem. Some other components, such as the defrost thermostat or defrost timer, could also cause the defrosting issue. It is recommended to test those components as well if the defrost heater is not the cause.

By testing the defrost heater for continuity, you can determine if it is the source of the defrosting problem in your refrigerator. If the defrost heater is indeed faulty, replacing it should solve the issue and allow your refrigerator to defrost properly.

Inspect the Defrost Thermostat

The defrost thermostat is responsible for regulating the temperature in the freezer and ensuring that it defrosts when necessary. If the defrost thermostat is not working properly, it can cause the freezer to become frosted and prevent it from defrosting adequately.

To inspect the defrost thermostat, follow these steps:

Disconnect the refrigerator from the power source: Before you begin any inspection or repair work, make sure to unplug the refrigerator from the electrical outlet. This will help prevent any accidents or injuries.
Locate the defrost thermostat: The defrost thermostat is usually located near the evaporator coils or in the freezer compartment. Refer to your refrigerator’s manual for specific instructions on finding the thermostat.
Access the thermostat: Depending on the model of your refrigerator, you may need to remove the back panel of the freezer to access the defrost thermostat. Use a screwdriver or any necessary tools to remove the panel.
Test the thermostat for continuity: Set your multimeter to the continuity or resistance setting. Place the multimeter probes on the two terminals of the thermostat. If the multimeter shows a reading of infinity, it means that the thermostat is faulty and needs to be replaced.
Replace the defrost thermostat if necessary: If the thermostat is not functioning correctly, you will need to replace it. Disconnect the wires connected to the thermostat and remove it from its housing. Install the new thermostat and reconnect the wires.
Reassemble the freezer: Once you have replaced the defrost thermostat, reassemble the freezer by putting back the removed panel or parts. Make sure everything is securely in place.
Plug in the refrigerator: After completing the inspection and any necessary repairs, plug the refrigerator back into the electrical outlet.

Inspecting the defrost thermostat is an essential step in fixing a refrigerator that’s not defrosting. If you are unsure or uncomfortable performing any of these steps, it is recommended to seek professional assistance.

Find the Defrost Thermostat

The defrost thermostat is a crucial component in the defrosting process of your refrigerator. It is responsible for monitoring the temperature of the evaporator coils and signaling the defrost heater to turn on or off.

To find the defrost thermostat, you will need to locate the evaporator coils. The evaporator coils are usually located behind the back panel of the freezer compartment. You may need to remove the panel to access the coils.

Once you have access to the evaporator coils, you should see a small cylindrical device attached to one of the coils. This is the defrost thermostat. It is typically round in shape and has two wires attached to it.

You can verify if the defrost thermostat is working properly by performing a continuity test. To do this, disconnect the power to the refrigerator and remove the wires from the defrost thermostat. Use a multimeter to measure the resistance between the two terminals of the thermostat. If the multimeter shows continuity, the thermostat is functioning correctly. If there is no continuity, you will need to replace the defrost thermostat.

It is important to note that the defrost thermostat is a simple and relatively inexpensive component. If you have determined that it is faulty, replacing it should solve the issue of your refrigerator not defrosting.

Test the Defrost Thermostat for Continuity

The defrost thermostat is a small device that helps regulate the temperature in your refrigerator’s freezer compartment. It is responsible for turning off the defrost heater when the desired temperature is reached. If the defrost thermostat is faulty, it may cause your refrigerator to not defrost properly.

To test the defrost thermostat for continuity, you will need a multimeter. Follow these steps:

Unplug the refrigerator from the power source to ensure your safety.
Locate the defrost thermostat, which is usually located near the evaporator coils or in the freezer compartment.
Remove the defrost thermostat from its housing by carefully disconnecting the wires and any mounting screws or clips.
Set your multimeter to the continuity or resistance setting.
Touch one meter probe to each terminal of the defrost thermostat. If the multimeter shows an open circuit or infinite resistance, the defrost thermostat is faulty and needs to be replaced.
If the defrost thermostat shows continuity or low resistance, it is functioning properly.

If the defrost thermostat is faulty, you can purchase a replacement part from an appliance store or online retailer. Make sure to install the new defrost thermostat correctly and reconnect any wires or mounting screws. Once the thermostat is replaced, plug your refrigerator back in and monitor if it starts defrosting properly.

If the problem persists, it is recommended to contact a professional technician as there may be other underlying issues causing the refrigerator to not defrost properly.

Replace the Defrost Control Board

If your refrigerator is not defrosting and you have already checked and ruled out other potential causes, such as a faulty defrost heater or thermostat, it may be necessary to replace the defrost control board. The defrost control board is responsible for controlling the defrost cycle in your refrigerator. Over time, this control board can fail, preventing the refrigerator from properly defrosting.

To replace the defrost control board, follow these steps:

Ensure that the refrigerator is unplugged from the power source to prevent electrical shock.
Locate the defrost control board, which is typically located behind the refrigerator’s control panel or in the freezer section.
Remove the control panel or access panel to gain access to the defrost control board.
Disconnect any wires or connectors that are connected to the defrost control board.
Remove any screws or clips that are securing the defrost control board in place.
Take the old defrost control board out of the refrigerator.
Insert the new defrost control board into the refrigerator.
Secure the new defrost control board with screws or clips.
Reconnect any wires or connectors to the new defrost control board.
Replace the control panel or access panel.
Plug the refrigerator back into the power source.

After replacing the defrost control board, monitor your refrigerator to ensure that it is now defrosting properly. If the issue persists, it may be necessary to consult a professional technician for further assistance.

Locate the Defrost Control Board

The defrost control board is an essential component of a refrigerator’s defrost system. It is responsible for regulating and initiating the defrost cycle, which helps prevent frost buildup and ensures proper cooling performance. To fix a refrigerator that’s not defrosting, you’ll need to locate the defrost control board and check for any issues.

The defrost control board is typically located in the control housing or behind the refrigerator’s back panel. You’ll need to unplug the refrigerator and remove any covers or panels to access the control board.

Once you’ve located the control board, visually inspect it for any signs of damage or burning. Look for any burnt-out circuits, loose connections, or corroded wires. If you notice any problems, you may need to replace the defrost control board.

In some cases, the control board may have a reset button or a fuse that can be easily replaced. Refer to the refrigerator’s manual or contact the manufacturer for specific instructions on how to reset or replace the defrost control board.

It’s important to note that not all refrigerators have a separate defrost control board. Some models may have an integrated control board that handles multiple functions. In such cases, you may need to consult the refrigerator’s manual or seek professional assistance to troubleshoot and fix the defrosting issue.

Remember to always exercise caution when working with electrical components. If you’re unsure about any steps or are uncomfortable with handling the control board, it’s best to seek help from a qualified technician or contact the manufacturer for assistance.

Remove and Replace the Defrost Control Board

If your refrigerator is not defrosting properly, the issue might be with the defrost control board. The defrost control board is responsible for regulating the defrost cycle in the refrigerator. Over time, the control board may become faulty and need to be replaced. Follow these steps to remove and replace the defrost control board:

Unplug the refrigerator from the power source.
Locate the defrost control board. It is usually found behind the control panel or at the back of the refrigerator.
Using a screwdriver, remove the screws that secure the control panel in place. Carefully disconnect any wires connected to the control board.
Take note of the wire connections to ensure you can properly install the new control board.
Remove the old control board by gently pulling it out of its housing.
Insert the new control board into the same position, making sure it is securely in place.
Reconnect the wires to their respective terminals on the control board.
Secure the control panel back in place by tightening the screws.
Plug the refrigerator back into the power source.

Once you have successfully replaced the defrost control board, monitor your refrigerator to see if the defrosting issue is resolved. If not, there may be a different underlying problem that requires professional assistance.

Check the Evaporator Fan Motor

The evaporator fan motor is responsible for circulating the cold air throughout the refrigerator, helping to maintain a consistent temperature. If this motor is not working properly, it can lead to a lack of cooling and excessive frost build-up on the coils.

To check the evaporator fan motor, follow these steps:

Locate the evaporator fan motor, which is usually found in the freezer section of the refrigerator.
Ensure that the refrigerator is plugged in and turned on.
Open the freezer door and feel for the cold air circulation. If you don’t feel any air movement, the evaporator fan motor may be faulty.
Manually spin the fan blades. They should turn freely and without any resistance. If the blades are difficult to spin or don’t spin at all, the motor may need to be replaced.
Check the wiring connections to the motor. Make sure they are secure and free from any damage or corrosion.
If the fan motor appears to be in good condition, but still doesn’t turn on, it may be a problem with the motor capacitor or control board. In this case, it’s best to consult a professional technician for further diagnosis and repair.

By checking the evaporator fan motor, you can determine if it is functioning properly or needs to be replaced. This simple troubleshooting step can help to resolve issues with the defrosting process and keep your refrigerator running efficiently.

Locate the Evaporator Fan Motor

The evaporator fan motor is an essential component in the cooling process of a refrigerator. It is responsible for circulating the cold air throughout the unit, ensuring that every part of the refrigerator is cooled evenly. If the evaporator fan motor is not working properly, it can cause several issues, including a refrigerator that is not defrosting.

To locate the evaporator fan motor, you will need to remove the back panel of the freezer compartment. This panel is usually held in place by a series of screws or clips. Once the panel is removed, you should be able to see the fan motor located near the evaporator coils.

It is important to note that the location of the evaporator fan motor may vary depending on the model and brand of your refrigerator. Consult the owner’s manual or the manufacturer’s website for specific instructions on locating the evaporator fan motor for your appliance.

When inspecting the evaporator fan motor, check for any signs of damage or wear. Look for any obstructions that may be preventing the fan from spinning freely. If the fan motor is not running or is making unusual noises, it may need to be replaced.

Before replacing the evaporator fan motor, it is recommended to test it to ensure that it is indeed the cause of the defrosting issue. You can use a multimeter to check for continuity, or manually spin the fan to see if it moves freely. If the fan motor fails these tests, it is likely that it needs to be replaced.

Remember to always unplug the refrigerator from the power source before attempting to repair or replace any components. If you are unsure or uncomfortable with performing these steps, it is best to consult a professional appliance repair technician.