DIY How to Replace LG Fridge Overload Protector 6750C-0004R

Is your LG refrigerator acting more like a room-temperature cupboard than a cooling device? If the culprit is a faulty overload protector, you’re not alone—and you won’t need to call an expensive repairman to fix it. Dive into our step-by-step guide and accompanying how-to video below to replace this small but vital component and restore your fridge’s cooling powers in no time!

Looking for the right part? Enter your appliance model number below to find the exact match and get your appliance running like new again!

If your LG refrigerator isn’t cooling properly or the compressor won’t kick on, a faulty overload protector could be the cause. This small part, number 6750C-0004R, helps protect the compressor from overheating or drawing too much current. When it fails, your fridge might stop cooling altogether. The good news is that replacing the overload protector is a simple and affordable fix that you can usually handle yourself. In this guide, we’ll show you how to remove the old part and install the new one to help get your refrigerator back up and running. Let’s get started.

Watch here: How to replace the overload protector on a refrigerator

The information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer’s documentation or contact us with any questions.

What is the overload protector?

Before we dive into the replacement process, let’s take a moment to understand the importance of the compressor overload protector and how it works.

The compressor is the heart of your refrigerator’s cooling system. It circulates refrigerant through the coils, creating the cool temperatures that keep your food fresh and your ice cream frozen. However, like any mechanical component, the compressor can overheat or experience an electrical overload, potentially causing it to fail or even catch fire.

That’s where the compressor overload protector comes into play. This part monitors the compressor’s electrical current and temperature. If it detects an issue, such as overheating or excessive current draw, it trips and cuts off power to the compressor, preventing further damage.

By acting as a safeguard, the overload protector extends the lifespan of your compressor and prevents costly repairs or replacements. However, when the overload protector itself fails, it can no longer protect the compressor, leaving your fridge vulnerable and without proper cooling.

Safety first 

When working on any appliance, always keep safety first to avoid personal injury or damage to the appliance or parts. Here are some safety tips to keep in mind:

• If the appliance has recently been used, give it plenty of time to cool down before working on it. 
• Take your time while working to prevent accidents and personal injuries. Rushing is the enemy of precision.
• Work in a well-lit area so you can clearly see and access appliance parts.
• Keep your workspace free of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with wet hands. Make sure the work area is completely dry.
• Check the user manual to see if there are specific installation or safety instructions related to your appliance or replacement part. 
• Be gentle when handling or removing parts. Excessive force might damage the appliance or cause personal injury.
• Wear insulated work gloves to protect your hands from sharp metal parts and debris.
• When working with wires, avoid touching any exposed wires or terminals. If you need to touch a wire, use a non-conductive tool or wear insulating gloves to prevent electrical shock.
• Don’t test live voltage with a multimeter if you’re unfamiliar with how to prevent short-circuiting.
• Consider wearing safety glasses and/or a dust mask when working with chemicals, dust or a large amount of debris to prevent irritation or injury.
• Turn off the water supply at the outlet before beginning repairs. Keep towels ready to catch any residual water in the system when removing parts.

Tools and materials needed

To complete this repair, you’ll need a few basic tools:

• 1/2-inch open-end wrench
• Phillips screwdriver
• Flat blade screwdriver
• New compressor overload protector part number 6750C-0004R– Take your model number to AppliancePartsPros.com to locate the correct part for your unit.

Step-by-step instructions

Always power off and unplug your appliance or switch off the circuit breaker before you attempt any maintenance or replacement work. This keeps you safe by preventing any risk of electric shock. 

Step 1- Remove the rear access panel

1. Locate the water inlet hose at the back of your refrigerator. Using the 1/2-inch open-end wrench, unscrew the water inlet hose. Be prepared for some residual water to come out of the hose, so have a towel or bucket handy to catch any spills.
2. Next, locate the screws securing the rear access panel. Using the Phillips screwdriver, remove these screws.
3. Once the screws are removed, carefully disengage the tabs holding the panel in place and set the panel aside.

Step 2- Access the compressor area

1. Locate the compressor and the cover box that houses the compressor overload protector and start the relay. The cover box should be situated near the compressor.
2. Using the Phillips screwdriver, remove the single screw securing the cover box.
3. Gently pry open the cover box using the flat-blade screwdriver. Be careful not to damage any components inside the box.

Step 3- Remove the old compressor overload protector

1. Locate the compressor start relay, which is typically positioned above the overload protector.
2. Using the flat-blade screwdriver, carefully pry out the compressor start relay from its terminal. You may need to apply some gentle force but be cautious not to damage the terminal or surrounding components.
3. Next, locate the compressor overload protector, which should be positioned beneath the start relay.
4. Using the flat-blade screwdriver, gently pry out the overload protector from its terminal. Again, use caution and apply only the necessary force to avoid damaging the components.
5. Once both the start relay and overload protector are disconnected, remove the old compressor overload protector and set it aside.

Step 4- Install the new compressor overload protector 

1. Take the new compressor overload protector and position it near the compressor terminal where the old one was installed.
2. Using the flat blade screwdriver, connect the wire contact of the new overload protector to the compressor terminal. Make sure that it is securely connected and seated properly in the terminal.
3. Next, reinstall the compressor start relay by carefully pushing it onto its terminal. Make sure it is firmly seated and reconnected.

Step 5- Reassemble the cover box and rear access panel

1. Carefully reinstall the cover box, making sure that the harness goes through the designated cutout. Pay attention to the orientation of the cover box to make sure it fits properly over the compressor components.
2. Using the Phillips screwdriver, secure the cover box with the single screw you removed earlier.
3. Next, reinstall the rear access panel by aligning it with the tabs and gently pushing it back into place.
4. Using the Phillips screwdriver, secure the rear access panel with the screws you removed earlier.
5. Finally, reconnect the water inlet hose and tighten it with the 1/2-inch open-end wrench. Be careful not to overtighten the hose, as this could cause leaks or damage the connection.

More information

Thanks for reading! We hope this guide helped you replace the compressor overload protector in your LG fridge.

If you still need some replacement parts, grab your model number and head over to AppliancePartsPros.com. We offer over two million parts and most orders arrive in two business days. If you need some help with finding the right part or placing an order, you can contact our team at 1 (877) 477-7278.

While you’re waiting for your new part to arrive, you can explore our DIY blog and watch thousands of video tutorials on our YouTube channel.

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