If your freezer compressor is hot but not running, it indicates a potential issue with the compressor motor or starting components. This problem could prevent the compressor from receiving power and starting properly, resulting in a lack of cooling in the freezer.

Insufficient Power Supply

If your freezer compressor is hot but not running, the first thing you should check is the power supply. Make sure that the power cord is properly connected to both the freezer and the electrical outlet. Sometimes, the cord may come loose, preventing the compressor from receiving the necessary power. To further troubleshoot the power supply, try connecting another device to the outlet to see if it works. If the second device does not receive power, there may be an issue with the outlet itself. It’s also important to check for any tripped circuit breakers or blown fuses in your electrical panel. These can disrupt the power supply to the freezer compressor. By ensuring a proper power supply, you can eliminate one possible cause of your freezer compressor not running.

Faulty Start Relay Or Capacitor

When a freezer compressor is hot but not running, it could be due to a faulty start relay or capacitor. The start relay and capacitor play important roles in the compressor’s functioning. To visually inspect the start relay for signs of damage, follow these steps:

  1. First, unplug the freezer and locate the start relay attached to the compressor.
  2. Check for any burn marks, melted plastic, or loose connections on the relay.
  3. If you notice any damage, it is likely that the start relay is faulty and needs to be replaced.

If visual inspection doesn’t reveal any apparent damage, you can test the start relay or capacitor using a multimeter:

  1. Set the multimeter to the capacitance or ohms setting, depending on the type of component being tested.
  2. Remove the start relay or capacitor from the compressor.
  3. Using the multimeter, measure the resistance or capacitance of the component.
  4. If the reading is significantly different from the manufacturer’s specifications, it indicates a faulty start relay or capacitor.

If you have determined that the start relay or capacitor is the issue, consult the freezer’s manual or contact a professional technician to replace the faulty component.

Overheating Due To Dirty Or Faulty Condenser

In order to troubleshoot a freezer compressor that is hot but not running, one potential cause could be overheating due to a dirty or faulty condenser. The condenser is an important component of the compressor and plays a crucial role in its operation.

To resolve the overheating issue, cleaning techniques can be employed to remove dirt and debris from the condenser. Regularly cleaning the condenser coils can help prevent heat buildup and ensure proper functioning of the compressor.

If cleaning the condenser does not solve the problem, it may be necessary to diagnose and replace a faulty condenser. This involves inspecting the condenser for any visible signs of damage or wear, and if necessary, replacing it with a new one.

By addressing dirty or faulty condenser issues, the freezer compressor can be restored to its normal operating condition and ensure efficient cooling of the unit.

Compressor Overload Protection

Freezer compressors are equipped with an overload protection feature to prevent damage to the motor and compressor. The overload protector acts as a safety switch, shutting off power to the compressor if it becomes too hot or draws too much current. This helps prevent overheating and potential burnout.

  • Unplug the freezer from the power source.
  • Locate the overload protector, which is typically located near the compressor.
  • Press the reset button firmly until you hear a click.
  • Wait for a few minutes to allow the compressor to cool down.
  • Plug the freezer back in and monitor if the compressor starts running again.

Steps to troubleshoot and fix an overloaded compressor:

  1. Clean the condenser coils to ensure proper airflow.
  2. Check if the compressor is clogged or blocked by debris.
  3. Ensure that the freezer is not overloaded with food, as this can cause the compressor to work harder.
  4. Inspect the start relay and capacitor for any signs of damage and replace if necessary.
  5. If the issue persists, it is recommended to contact a professional technician to diagnose and repair the compressor.

Inspecting The Compressor Motor

When troubleshooting a freezer compressor that is hot but not running, it is important to inspect the compressor motor for any signs of damage. This involves identifying the different components of the compressor motor and visually inspecting them. Look for any signs of burning or melting, loose connections, or broken wires. These issues can prevent the compressor motor from running properly, leading to it getting hot.

Another important step in inspecting the compressor motor is testing the motor windings for continuity using a multimeter. This helps to determine if there are any open or shorted windings, which can also cause the motor to overheat. Make sure to follow the manufacturer’s instructions or consult a professional when performing this test to ensure accuracy and safety.

By carefully inspecting the compressor motor and testing the motor windings, you can diagnose any potential issues that may be causing the compressor to run hot but not start. Addressing these problems can help restore the proper function of your freezer and prevent further damage.

Checking The Temperature Control Thermostat

When troubleshooting a freezer compressor that is hot but not running, it is important to check the temperature control thermostat. The thermostat plays a crucial role in regulating the freezer’s temperature, ensuring it stays at the desired level. To test the thermostat, start by disconnecting the power supply to the freezer. Locate the thermostat and use a multimeter to check for continuity across its terminals. If there is no continuity, or if the thermostat fails to cycle properly, it may be faulty and require replacement.

If you need to replace a faulty thermostat, begin by turning off the power and disconnecting the freezer. Remove any covers or panels that are blocking access to the thermostat. Take note of the wiring connections and carefully remove the old thermostat. Install the new thermostat, reconnect the wiring, and replace any covers or panels. Finally, restore power to the freezer and monitor the compressor to ensure it is running and maintaining the proper temperature.

Assessing The Compressor Start Windings

It is important to assess the start windings of a freezer compressor when it is hot but not running properly. The start windings have a specific function in the compressor, which allows it to initiate the start-up process. To check the resistance of the start windings, you can use a multimeter. Simply set the multimeter to the resistance or ohms mode, and then connect its probes to the start winding terminals. A normal reading should show a low resistance value. If the resistance is too high or if there is no continuity, it indicates a problem with the start windings. To troubleshoot a malfunctioning start winding, you may need to inspect the wiring connections, check for any loose or damaged wires, and ensure that the start capacitor is functioning correctly. If necessary, consult a professional technician for further assistance.

Proper Cleaning And Maintenance

Proper cleaning and maintenance is essential to ensure the optimal performance of a freezer compressor and prevent the occurrence of issues such as the compressor running hot but not actually running.

Regular cleaning is of utmost importance as it prevents dirt and debris buildup. The accumulation of dirt can hinder the compressor’s ability to function efficiently, leading to overheating issues. To prevent this, cleaning techniques should be employed for different components of the compressor. For example, the condenser coils need to be cleaned regularly to remove dirt and dust. Similarly, the fan motor and blades should be maintained clean to ensure proper airflow. Additionally, it is recommended to check and clean the condensate drain for any blockages.

Moreover, overall compressor maintenance is crucial. This includes inspecting and tightening electrical connections, lubricating moving parts such as bearings, and checking refrigerant levels. Regular maintenance not only ensures the proper functioning of the compressor but also helps to identify potential issues early on, preventing costly repairs in the long run.

In conclusion, proper cleaning and maintenance, including regular cleaning techniques for different compressor components and overall compressor maintenance, play a vital role in preventing issues such as a hot compressor that is not running.

Seeking Professional Help

If you have a freezer compressor that is hot but not running, it may be time to seek professional help. Knowing when to contact a professional technician is essential in resolving the issue effectively. A reputable and knowledgeable technician will possess the expertise to diagnose and fix the problem accurately.

Before repairing or replacing the compressor, there are several factors to consider. First, assess the age of the compressor and the overall condition of the freezer. If the compressor is relatively new and the freezer is in good condition, repairing the compressor might be a viable option. However, if the compressor is old and the freezer is showing other signs of malfunction, replacing the compressor may be the better choice in terms of cost-efficiency.

Choosing the right technician and evaluating the repair or replacement options carefully will ensure that your freezer compressor issue is resolved effectively and efficiently.

Preventive Measures To Avoid Compressor Issues

Proper maintenance of your freezer compressor is crucial to ensure its optimal performance and avoid potential problems. By following these best practices, you can prolong the lifespan of your compressor:

  1. Regular cleaning: Keep the compressor and its surroundings clean from dust, dirt, and debris. This will prevent clogging and overheating, which can lead to issues.
  2. Check the condenser coils: Regularly inspect and clean the condenser coils to remove any accumulated dirt or dust. Dirty coils can restrict airflow and hinder cooling efficiency.
  3. Maintain proper ventilation: Ensure that there is enough space around the compressor for proper air circulation. Restricted airflow can cause the compressor to overheat.
  4. Monitor the temperature: Keep an eye on the temperature inside the freezer and make sure it is set at the correct level. Excessive cooling can strain the compressor.
  5. Inspect and replace components: Regularly check the compressor’s components such as belts, valves, and fans. Replace any worn-out or damaged parts promptly.
  6. Follow manufacturer’s guidelines: Adhere to the maintenance instructions provided by the freezer manufacturer to ensure proper care of the compressor.

By implementing these preventive measures and scheduling regular maintenance, you can keep your freezer compressor running efficiently and avoid potential issues. Remember, a well-maintained compressor not only prolongs its lifespan but also minimizes the chances of breakdowns and costly repairs.

Freezer Compressor Hot But Not Running: Troubleshooting Tips to Get it Back in Action!

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Frequently Asked Questions For Freezer Compressor Hot But Not Running

What Causes Freezer Compressor To Get Hot?

The freezer compressor can become hot due to factors like dust accumulation, lack of proper ventilation, refrigerant leaks, or a faulty motor. Ensure regular cleaning, adequate airflow, and professional maintenance to prevent overheating and extend the lifespan of your compressor.

Should Freezer Compressor Be Hot To Touch?

The freezer compressor should be warm to touch, but not too hot. It’s normal for it to generate heat while cooling the freezer. Excessive heat may indicate a problem with the compressor or cooling system. If you notice this, it’s best to have it checked by a professional.

How Do I Reset My Freezer Compressor?

To reset your freezer compressor, follow these steps: Start by unplugging the freezer for at least 30 minutes. Then, plug it back in and set the temperature to the desired level. Allow the compressor to run for a few hours to stabilize.

Finally, your freezer should be reset and ready to use.

What Are The Signs Of A Bad Freezer Compressor?

Common signs of a bad freezer compressor include frequent cycling on and off, excessive noise, warm temperatures inside the freezer, and food spoiling quickly. It may also lead to frost buildup, leaks, or an unresponsive freezer.


To sum up, if you find your freezer compressor hot but not running, it could indicate a potential issue with the motor or electrical components. It’s essential to take immediate action to prevent further damage to your appliance. Check for any visible signs of wear or damage, and if needed, consult a professional technician for a thorough inspection and repair.

Ignoring this problem may lead to costly repairs or even the need for a replacement. Keep your freezer in optimal condition to ensure the longevity of your food and appliance.

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