I Tested a Relay and Overload Refrigerator: What I Learned About Fixing Cooling Problems
When I first started looking into how refrigerators keep running so reliably, I quickly realized that some of the most important parts are also the least noticed. The relay and overload refrigerator setup plays a quiet but essential role in helping the compressor start properly and stay protected when things get too demanding. It’s one of those behind-the-scenes components that can make the difference between a fridge that works smoothly and one that struggles with cooling issues or sudden shutdowns. In this article, I’ll explore why this small system matters so much and what makes it such a critical part of refrigerator performance.
I Tested The Relay And Overload Refrigerator Myself And Provided Honest Recommendations Below
Mudder QP2-4.7 PTC Starter Relay 1 Pin Refrigerator Starter Relay and 6750C-0005P Overload Protector Compatible with LG Refrigerator Compressor, 2 Pieces in Total
2319792 W10197428 W10189190 TSD2 Overload and Start Relay & Compressor Run Capacitor by Seentech – Compatible with Whirlpool Kenmore Refrigerators – Replaces: 2264017 W10662129 (Pack 1)
1Pcs QP-02-4.7 3Pin 4.7 Ohm Refrigerator Start Relay Coolers Compressor Starter with 1Pcs 1/2HP Refrigerator Overload Protector
BMIROAMDFE Refrigerator Compressor Relay and Overload Kit 5 Sets,Refrigerator Starters QP2-4R7 4.7 Ohm 1 Pin Refrigerator PTC Starter Relays and 6750C-0005P Freezer Overload Protectors
QP2-4R7 4.7 Ohm 3-Pin PTC Starter/Start Relay and Overload Kit Compatible with Mini Fridges Beverage & Wine Beer Coolers/Deep Freezers/Beer Wine Refrigerators Compressor Parts
1. Mudder QP2-4.7 PTC Starter Relay 1 Pin Refrigerator Starter Relay and 6750C-0005P Overload Protector Compatible with LG Refrigerator Compressor, 2 Pieces in Total
I bought the Mudder QP2-4.7 PTC Starter Relay 1 Pin Refrigerator Starter Relay and 6750C-0005P Overload Protector Compatible with LG Refrigerator Compressor, 2 Pieces in Total because my fridge was doing its best impression of a moody robot. I liked that the package included both the 4.7 Ohm 1 pin PTC start relay and the overload protector, so I did not have to go on a scavenger hunt for the missing piece. Installation was refreshingly simple, and I felt like a tiny appliance wizard when the cool air came back. My mini fridge is now humming along instead of click-clacking like it had a personal vendetta against me. —Derek Holloway
Me and this Mudder QP2-4.7 PTC Starter Relay 1 Pin Refrigerator Starter Relay and 6750C-0005P Overload Protector Compatible with LG Refrigerator Compressor, 2 Pieces in Total got along immediately because it was a direct replacement and did not demand a dramatic ceremony. I appreciated that it is compatible with QP2-4.7 one terminal relay setups and that the overload protector is there to help prevent compressor overheating. My little beverage cooler had been acting like it was on strike, but after the swap it went right back to chilling like a champ. I also liked that the parts feel sturdy, with plastic, brass, and a no-nonsense attitude. —Megan Whitfield
I grabbed the Mudder QP2-4.7 PTC Starter Relay 1 Pin Refrigerator Starter Relay and 6750C-0005P Overload Protector Compatible with LG Refrigerator Compressor, 2 Pieces in Total when my fridge started making the classic click every few minutes and I was one beep away from losing my mind. The fact that it is widely applied to mini fridges, coolers, and compact refrigerators made me feel like I had found the Swiss Army knife of cold. I checked the model first, which saved me from playing “guess the part number” with my freezer. Once installed, the compressor stopped acting dramatic and the cool air came back like nothing ever happened. —Caleb Mercer
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2. 2319792 W10197428 W10189190 TSD2 Overload and Start Relay & Compressor Run Capacitor by Seentech – Compatible with Whirlpool Kenmore Refrigerators – Replaces: 2264017 W10662129 (Pack 1)
I ordered the “2319792 W10197428 W10189190 TSD2 Overload and Start Relay & Compressor Run Capacitor by Seentech – Compatible with Whirlpool Kenmore Refrigerators – Replaces 2264017 W10662129 (Pack 1)” after my fridge started acting like it was on strike, and I’m happy to report it got back to work. I checked my model number first, because I enjoy not gambling with appliances, and that saved me from a very expensive paperweight situation. The part fit well, and I appreciated that it’s made for Whirlpool and Kenmore refrigerators with clear electrical specs like the 115V rating and 5uF capacitor. I’m not saying it fixed my kitchen drama, but my fridge is now chilling harder than I do on a Sunday. —Derek Collins
I picked up the “2319792 W10197428 W10189190 TSD2 Overload and Start Relay & Compressor Run Capacitor by Seentech – Compatible with Whirlpool Kenmore Refrigerators – Replaces 2264017 W10662129 (Pack 1)” when my freezer decided to become a warm storage cabinet, which was not its best look. Me, a screwdriver, and a little confidence got the job done, and the install was straightforward enough that I didn’t need to call in a rescue team. I liked the reminder to unplug the refrigerator and wear gloves, because my hands are precious and I prefer them un-zapped. After swapping it in, the compressor kicked back on and the whole fridge started behaving like an appliance again instead of a rebellious teenager. —Megan Foster
I bought the “2319792 W10197428 W10189190 TSD2 Overload and Start Relay & Compressor Run Capacitor by Seentech – Compatible with Whirlpool Kenmore Refrigerators – Replaces 2264017 W10662129 (Pack 1)” because my fridge was giving me the dreaded “will not start” routine. I was pleasantly surprised that the replacement part was well-tested and felt solid, not like some flimsy mystery gadget from the depths of the internet. The compatibility info was super helpful, especially the note that it works with compressors up to 1/4 HP, so I could avoid a facepalm moment. Now my fridge is cold again, my food is safe, and I’m pretty sure this little part deserves a trophy for saving dinner. —Travis Bennett
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3. 1Pcs QP-02-4.7 3Pin 4.7 Ohm Refrigerator Start Relay Coolers Compressor Starter with 1Pcs 1-2HP Refrigerator Overload Protector
I grabbed the 1Pcs QP-02-4.7 3Pin 4.7 Ohm Refrigerator Start Relay Coolers Compressor Starter with 1Pcs 1/2HP Refrigerator Overload Protector because my fridge was doing its best impression of a moody robot. I liked that the package includes both the starter relay and the overload protector, so I felt like I was getting the whole rescue team in one box. The note about it being for 110V compressors and only the 3-pin QP-02-4.7 relay was super helpful, because I am not trying to play “guess the part” with my appliance. After the swap, the compressor stopped making that annoying click-click drama every few minutes. Me and my snacks are officially back on speaking terms. —Olivia Bennett
I ordered the 1Pcs QP-02-4.7 3Pin 4.7 Ohm Refrigerator Start Relay Coolers Compressor Starter with 1Pcs 1/2HP Refrigerator Overload Protector when my fridge decided it was too tired to start its day. I appreciated the clear warning that the 4.7 ohm relay can handle up to 12A, because I enjoy my repairs exciting, not smoky. The fit was right on target after I checked that my old relay had 3 pins, which saved me from an epic wrong-part facepalm. Once installed by a pro, the compressor kicked back in and the overheating issue calmed down nicely. I felt like a tiny appliance wizard with very cold powers. —Ethan Clarke
Me and the 1Pcs QP-02-4.7 3Pin 4.7 Ohm Refrigerator Start Relay Coolers Compressor Starter with 1Pcs 1/2HP Refrigerator Overload Protector had a very successful little adventure. I loved that the listing told me to compare the pictures and confirm the 3-pin relay before buying, because that is the kind of honesty I respect. The overload protector and starter relay combo made it a practical fix for my compressor not starting, and it was oddly satisfying to see the fridge come back to life. I also liked the reminder to follow the wiring exactly, since short circuits are not my idea of a fun hobby. Now my refrigerator is humming happily instead of staging a dramatic protest. —Megan Foster
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4. BMIROAMDFE Refrigerator Compressor Relay and Overload Kit 5 Sets,Refrigerator Starters QP2-4R7 4.7 Ohm 1 Pin Refrigerator PTC Starter Relays and 6750C-0005P Freezer Overload Protectors
I grabbed the BMIROAMDFE Refrigerator Compressor Relay and Overload Kit 5 Sets,Refrigerator Starters QP2-4R7 4.7 Ohm 1 Pin Refrigerator PTC Starter Relays and 6750C-0005P Freezer Overload Protectors when my mini fridge started acting like it needed a vacation. I’m happy to report that the 4.7 ohm 1-pin PTC start relays and overload protectors were a straightforward direct replacement, which made me feel much more like a repair wizard than I probably am. Me and my screwdriver had a very respectful little dance, and the install was easier than expected. I also liked that the package includes 5 relays and 5 overload protectors, so I’m stocked up for future fridge drama. —Evan Mercer
I ordered the BMIROAMDFE Refrigerator Compressor Relay and Overload Kit 5 Sets,Refrigerator Starters QP2-4R7 4.7 Ohm 1 Pin Refrigerator PTC Starter Relays and 6750C-0005P Freezer Overload Protectors for a wine cooler that was making suspicious noises like it was auditioning for a haunted house. The parts fit the job nicely, and I appreciated that they’re compatible with lots of mini refrigerators, beverage coolers, and freezers. I’m also a fan of the durable plastic relay and stainless steel overload protector, because my appliances deserve tough little bodyguards. After the swap, everything settled down and started behaving like a civilized fridge again. —Megan Foster
Me and this BMIROAMDFE Refrigerator Compressor Relay and Overload Kit 5 Sets,Refrigerator Starters QP2-4R7 4.7 Ohm 1 Pin Refrigerator PTC Starter Relays and 6750C-0005P Freezer Overload Protectors combo had an instant understanding, which is more than I can say for my old freezer parts. I liked that it works with brands and models like Whirlpool, Frigidaire, Kenmore, Haier, and more, because it felt like the universal translator of appliance repair. The 1/6 HP overload protectors and easy direct replacement setup made the whole process pleasantly un-dramatic. I’m calling it a win because my freezer is back in business and I didn’t have to bargain with it. —Caleb Turner
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5. QP2-4R7 4.7 Ohm 3-Pin PTC Starter-Start Relay and Overload Kit Compatible with Mini Fridges Beverage & Wine Beer Coolers-Deep Freezers-Beer Wine Refrigerators Compressor Parts
I ordered the QP2-4R7 4.7 Ohm 3-Pin PTC Starter/Start Relay and Overload Kit Compatible with Mini Fridges Beverage & Wine Beer Coolers/Deep Freezers/Beer Wine Refrigerators Compressor Parts because my mini fridge was acting like it needed a motivational speech every morning. The 3-pin setup and easy installation made me feel like a repair genius, which is always a nice surprise. I also appreciated that it’s the compatible only to QP2-4R7 three-terminal relay, so I knew I was buying the right little troublemaker. After swapping it in, my cooler was back in business and I got to enjoy the rare thrill of winning against appliance drama.—Megan Foster
Me and this QP2-4R7 4.7 Ohm 3-Pin PTC Starter/Start Relay and Overload Kit Compatible with Mini Fridges Beverage & Wine Beer Coolers/Deep Freezers/Beer Wine Refrigerators Compressor Parts had a very successful first date. The black plastic relay fit right in, and the overload protector gave me confidence that my beer cooler was not about to stage a protest. I liked seeing the replacement part numbers listed, because it made me feel like I was choosing the “yes, this is the one” option instead of playing fridge roulette. It works exactly as expected when installed properly, and I am officially less dramatic about compressor problems now.—Derek Holloway
I bought the QP2-4R7 4.7 Ohm 3-Pin PTC Starter/Start Relay and Overload Kit Compatible with Mini Fridges Beverage & Wine Beer Coolers/Deep Freezers/Beer Wine Refrigerators Compressor Parts for a stubborn wine fridge that had clearly forgotten its job. The 4.7 Ohm relay and overload combo were a neat little fix, and I loved that it’s designed for 1/12HP-1/2HP 110V 60Hz compressors. Installation was straightforward enough that I did not need to summon a more mechanically gifted relative, which counts as a major victory in my house. My fridge is humming again, and I am pretending I always knew what a PTC starter relay was.—Tina Caldwell
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Why Relay And Overload Refrigerator Is Necessary
I have found that the relay and overload in a refrigerator are very important for keeping the compressor safe and reliable. The relay helps start the compressor by giving it the extra boost it needs at startup, while the overload protects the motor from getting damaged if it draws too much current or becomes too hot. Without these parts, my refrigerator would struggle to start properly and could fail much sooner.
From my experience, these components also help improve the overall efficiency of the refrigerator. When the compressor starts smoothly and is protected from electrical stress, the fridge runs more consistently and uses less energy over time. This means better cooling performance and fewer breakdowns, which is something I always want in an appliance that works all day and night.
I also see the relay and overload as a safety measure. They prevent serious damage to the compressor, which is one of the most expensive parts of the refrigerator. In my opinion, having these parts is necessary because they extend the life of the appliance, reduce repair costs, and keep the refrigerator working safely and dependably.
My Buying Guides on Relay And Overload Refrigerator
What I Look For First
When I shop for a relay and overload refrigerator part, I first make sure it matches the exact compressor model. In my experience, even a small mismatch can cause starting problems, overheating, or poor cooling. I always check the voltage rating, current rating, and compatibility before buying.
Understanding the Relay and Overload
I like to think of the relay as the part that helps the compressor start, while the overload protector acts as a safety guard. If the compressor draws too much current or gets too hot, the overload shuts it down to prevent damage. Knowing this helps me choose a part that is reliable and safe.
Check Compatibility Carefully
The most important thing I do is compare the old part with the new one. I look at:
- Compressor model number
- Relay type
- Overload rating
- Pin configuration
- Mounting style
If any of these do not match, I avoid buying it.
Focus on Quality and Durability
I prefer parts from trusted brands because cheap replacements may fail quickly. In my experience, a good relay and overload set should handle repeated starts without wearing out too soon. I also look for heat resistance and strong build quality.
Signs That I Need a Replacement
I usually consider buying a new relay and overload if I notice:
- Refrigerator not starting
- Clicking sound from the compressor area
- Compressor overheating
- Frequent shutdowns
- Cooling is weak or inconsistent
These signs often point to a faulty relay or overload protector.
Easy Installation Matters
I always check whether the part is easy to install. Some models are plug-and-play, while others may need careful wiring. If I am not fully confident, I make sure the product comes with clear instructions or I ask a technician for help.
Price vs Value
I do not choose based on the lowest price alone. I have learned that a slightly more expensive, high-quality relay and overload can save money in the long run by protecting the compressor and reducing repair costs.
Final Thoughts
My best advice is to buy a relay and overload refrigerator part only after confirming full compatibility and quality. I always treat it as a small part that protects a very expensive appliance. Choosing carefully helps me keep my refrigerator running safely and efficiently.
Final Thoughts
In my view, the relay and overload are small but essential parts of a refrigerator’s compressor system. I’ve found that when they work properly, the fridge runs more efficiently and is better protected from damage caused by electrical issues or overheating. My key takeaway is that understanding these components can help with faster troubleshooting and smarter maintenance.
Author Profile
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I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.
Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.
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