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How To Test Refrigerator Start Relay With Multimeter? Guide 2023

If you are looking for how to test refrigerator start relay with multimeter, You’re in the right place. Testing a refrigerator start relay can be tricky. But it’s an important part of diagnosing and repairing your appliance.

A faulty start relay can cause all kinds of problems with the performance and operation of your fridge. Knowing how to test a refrigerator start relay correctly is essential for any DIY appliance repair professional-technician.

Steps Of How To Test Refrigerator Start Relay With Multimeter

Understanding the Basics of a Refrigerator Start Relay

A refrigerator start relay is an important component of your fridge that helps control the compressor motor and initiate the cooling cycle. Without it, your refrigerator won’t be able to keep food cold. It’s important to know how to test the refrigerator start relay with a multimeter to diagnose problems. And ensure it’s working properly. 

You must understand the basics of a refrigerator start relay and its function in your appliance. A start relay is designed to provide an extra power surge when the compressor motor turns on. This helps it overcome any resistance as it starts up, reducing strain and extending the motor’s life.

a. How Can You Tell If a Start Relay in Your Unit is Faulty?

Below are the common indications to help you understand if your relay system is in good working condition or just faulty. 

Sign-1: There’s a rattling sound

Sign-2: There’s a click sound

Sign-3: Your unit is not cooling

Select the Right Type of Multimeter for Your Needs

Once you know how a refrigerator start relay works, it’s time to select the right type of multimeter for your needs. Different models are designed to measure different properties such as voltage, current, etc. 

Ensure you have all the necessary tools, materials and safety equipment before starting any testing. So it’s important to select the right type for your needs. If you are unsure which one to choose, consult a professional technician or research online. 

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Gather Necessary Tools, Materials and Safety Equipment

Before beginning any repair work on your refrigerator, wear the appropriate safety gear, such as gloves, goggles and a face mask. Also, be sure to gather any necessary tools and materials before starting. 

You will need:

  • A multimeter 
  • Screwdrivers 
  • Electrical tape 
  • Wrenches or pliers (optional) 

Identify and Locate the Refrigerator Start Relay in Your Unit

Once you have gathered your tools, materials and safety equipment, you can begin identifying and locating the refrigerator start relay in your unit. The start relay is generally located near the back or side wall of the fridge.

how to test refrigerator start relay with multimeter

Or near where the power cord connects to the appliance. It is a small, rectangular-shaped component with several wires leading to it. To learn more about how to fix a refrigerator compressor then, click here

Set Up the Multimeter Correctly to Test the Refrigerator Start Relay

Once you have located the start relay, put on your safety gear and set up the multimeter correctly. Set the multimeter selector switch to “Ohms” to measure resistance.

Then connect the test leads to the appropriate terminals on the start relay (be sure to note which terminal is positive and which is negative).

Test the Refrigerator Start Relay and Document the Results

Now you are ready to begin testing the refrigerator start relay. Turn on your multimeter, then take a reading. The reading should be between 0-30 Ohms. If it is outside of this range, the start relay may need to be replaced.

Once you have taken a reading, document your results in a log book or other record-keeping system for future reference. This will help you track any changes in performance and can prove useful when diagnosing other appliance repair issues. If you’re unsure how to interpret your findings, check the manufacturer’s instructions for further guidance.

Replace the Refrigerator Start Relay if Necessary 

If your multimeter reading indicates that the start relay needs to be replaced, you can do so with a few simple steps. Shut off the power to the refrigerator, then remove and replace the faulty component. Be sure to use new electrical tape to connect and secure the wires. 

Once the new start relay is installed, turn the power back on and test it with your multimeter. If everything looks good, you can put away your tools and enjoy a cool fridge again.

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Safety Instructions

It is important to remember that when working with electrical components, safety must be your top priority. Be sure to wear the appropriate clothing and protective gear and follow all instructions provided in the manual for proper unit maintenance. Never use a multimeter on an energized circuit or attempt any repairs without proper training and experience. 

By following these simple steps, you can easily test and replace your refrigerator start relay with a multimeter. With just a little bit of knowledge, you could increase the health of your refrigerator. Also, with the right tools, you can keep your fridge running efficiently for years.

Finally, take extra precautions when working with electrical appliances, as it can be dangerous if not done correctly. You should always disconnect the power from the appliance before you start testing.


How to test refrigerator start relay with a multimeter is an important task for maintaining the overall health of your appliance. With the right tools, materials and safety equipment, you can easily test a refrigerator start relay in a few simple steps. Be sure to document your results and consider replacing the part if necessary. 

To ensure that your fridge remains reliable and efficient for years to come. Remember, refrigerator repair should always be left to a professional technician in order to ensure safe, reliable operation if you’re ever unsure about any part of the repair process. Don’t hesitate to seek help from an experienced appliance service provider.

Good luck with your refrigerator.

Start relay testing and happy cooking!