LG Refrigerator Not Cooling

 Short answer: If your LG fridge isn’t cooling, first check the thermostat settings. Ensure vents aren’t blocked by items and clean coils at the back. Confirm the door seals tightly.

The cooling function is the heart of any refrigerator, ensuring our food stays fresh and safe to consume. When an LG refrigerator fails to maintain its cool, it’s not only an inconvenience but can also lead to wasted food and increased costs. Several factors, ranging from simple oversights to more complex mechanical issues, can be the root cause. Understanding these potential triggers can help users troubleshoot and find the best solutions, saving time, effort, and often money.

Reasons Why LG Refrigerator Is Not Cooling

Fridge Improperly Located:

For optimal cooling, refrigerators need good airflow around them. If placed too close to a wall or between tight cabinetry, they may not dispel heat effectively, reducing cooling efficiency.

A Faulty Compressor:

The compressor is the refrigerator’s heart, circulating refrigerant and ensuring the internal temperature stays consistent. If it malfunctions, the entire cooling system is compromised.

A Defective Condenser Motor:

This motor cools the compressor and the condensing coil. If defective, the refrigerator won’t cool effectively.

Start Relay Fault:

This component aids the compressor in starting up. A faulty start relay might prevent the compressor from running, thus affecting cooling.

Faulty Evaporator Fan Motor:

Located in the freezer section, this fan circulates cold air into the refrigerator. If it fails, cooling will be compromised.

LG Refrigerator Leaking Water:

Water leakage can indicate a defrosting issue, affecting the refrigerator’s cooling mechanism.

Frozen/Clogged Drain Line:

If the defrost drain line freezes or gets clogged with debris, water can’t drain and might accumulate, leading to cooling inefficiencies or leaks.

Faulty Tank Assembly:

A malfunctioning water tank assembly can lead to leaks, which might compromise the refrigerator’s temperature stability.

Hot Items Were Added to the Unit:

Placing hot food directly into the fridge raises its internal temperature, making the appliance work harder to cool down.

Doors Being Opened Frequently:

Every time the fridge door is opened, warm air enters. Frequent openings can disrupt the internal temperature, making the unit work harder to maintain its setting.

Incorrect Thermostat Setting:

If set too high, the refrigerator won’t cool adequately. Ensure it’s set to the manufacturer’s recommended temperature.

Demo Mode is On:

Some LG fridges have a demo or showroom mode, which disables cooling functions for display purposes. Ensure this mode is turned off.

Failing Door Seals:

If the door seals are cracked or not sealing properly, they can allow warm air in and cold air out, affecting the refrigerator’s cooling capability.

How To Fix LG Refrigerator Not Cooling?

Repair a Faulty Condenser Fan Motor:

Step 1: Access the Motor:

• Remove the refrigerator’s back panel. This will typically be secured with screws. Set the panel and screws aside.
• Locate the condenser fan. It will be near the compressor, and the fan should be sitting next to the condenser coils.

Step 2: Check for Obstructions: Sometimes, the fan isn’t faulty but blocked. Look for debris, ice, or other obstructions that might be preventing the fan from spinning. If you find any, clear them out.

Step 3: Test the Fan: Manually spin the blades could be damaged and might need replacement.

Step 4: Unplug the Fan Motor: Disconnect the wires connected to the condenser fan motor. They will either be in a wiring harness that you can unplug, or you might need to remove them with pliers.

Step 5: Remove the Motor: Unscrew and remove the old condenser fan motor from its bracket or housing.

Step 6: Install the New Motor:

• Attach the new motor to the bracket or housing. Ensure it’s secured in the same position as the old one.
• Reconnect the wires or plug them back into the wiring harness.

Step 7: Test the New Motor: Before replacing the back panel, plug the refrigerator in and check that the condenser fan runs smoothly. If it does, unplug the refrigerator again.

Step 8: Reattach the Back Panel: Place the back panel in its original position and secure it with the screws.

Replace the evaporator fan motor:

Replacing the evaporator fan motor in an LG refrigerator is a slightly technical task, but it can be done with some basic tools and a bit of patience. As always, safety comes first; unplug your refrigerator before performing any repairs.

Step 1: Locate the Evaporator Fan:The evaporator fan is usually found in the freezer compartment, often behind a panel that you’ll need to remove.

Step 2: Remove the Panel: Uninstall any screws securing the panel and set them aside. Carefully remove the panel to reveal the evaporator fan motor.

Step 3: Inspect for Obstructions: Before concluding that the fan motor is faulty, check for ice or debris that might be obstructing the fan blades. If present, clear these away and test the refrigerator to see if the problem persists.

Step 4: Disconnect the Fan Motor: The fan will be connected to the refrigerator by a set of wires. These could either be connected by a clip or may need to be pulled out individually. Unplug these wires.

Step 5: Remove the Faulty Motor: Unscrew any screws holding the evaporator fan motor in place. Once it is loose, carefully take it out of its housing.

Step 6: Place the New Motor: Install the new motor in the same location, ensuring it fits into any grooves or brackets that hold the old one.

Step 7: Reconnect the Wires: Connect the wires to the new motor in the same configuration as the old one. If they clip on, you’ll hear a ‘click’ when they’re secure.

Step 8: Test the Motor: Before reassembling everything, plug in the refrigerator and test the new motor. If it runs as expected, unplug the refrigerator again.

Step 9: Reassemble the Panel: Place the panel back and secure it with the screws you initially removed.

Step 10: Plug the Refrigerator Back In: After confirming everything is secure, plug the refrigerator back in.

Step 11: Monitor Temperature: Keep an eye on the refrigerator’s temperature to confirm it’s cooling as expected.

Replace the Faulty Inverter Linear Compressor:

Replacing a faulty inverter linear compressor in an LG refrigerator is a very advanced procedure that involves the sealed system of the appliance. If done improperly, it can void warranties or cause more damage. In most situations, this is a job for a certified technician. However, here is a general overview:

Step 1: Recover Refrigerant: Using a refrigerant recovery machine, recover all the refrigerant from the refrigerator. Only certified technicians should perform this step due to the environmental and safety concerns associated with refrigerants.

Step 2: Access the Compressor: Remove the back panel of the refrigerator to reveal the compressor.

Step 3: Disconnect the Compressor:

• Locate the electrical terminals on the side of the compressor and disconnect them.
• Unscrew and disconnect the copper lines connected to the compressor. Keep in mind there may be residual refrigerant in the lines, which can escape when they’re disconnected.

Step 4: Remove the Old Compressor: The compressor is typically held in place with mounting bolts. Remove these bolts and carefully take out the old compressor.

Step 5:  Install the New Compressor:

• Position the new compressor where the old one was.
• Secure it in place with the mounting bolts.

Step 6: Reconnect Copper Lines: Reconnect the copper lines to the compressor. This may require brazing (a type of soldering) to ensure a tight seal.

Step 7: Vacuum the System: Before adding refrigerant, you’ll need to vacuum the system using a vacuum pump. This process removes air and moisture from the sealed system. A deep vacuum (often to 500 microns) is required to ensure no contaminants are present.

Step 8: Recharge with Refrigerant: Using a refrigerant charging machine or manifold gauges, recharge the system with the appropriate amount and type of refrigerant specified by the manufacturer.

Step 9: Reconnect Electrical Terminals: Connect the electrical terminals to the new compressor.

Step 10: Replace the Back Panel: Reattach the refrigerator’s back panel.

Step 11: Power On and Test: Plug in the refrigerator, power it on, and monitor its performance to ensure it cools properly.

Replace the Bad Start Relay:

The start relay gives the compressor a boost to start up.

1. Safety First: Unplug the refrigerator.
2. Access: Remove the rear panel of the refrigerator.
3. Locate: Find the start relay, typically attached to the side of the compressor.
4. Disconnect: Gently pull out the faulty relay.
5. Replace: Plug in the new start relay.
6. Reassemble: Reattach the rear panel.

Clean the Condensing Coils:

Dirty coils can hinder efficiency.

1. Safety First: Unplug the refrigerator.
2. Access: Locate the coils, either beneath or behind the fridge.
3. Dust Off: Use a coil brush or a vacuum to remove dust and debris.
4. Clean: Wipe them down with a damp cloth. For heavy grime, use warm soapy water.
5. Inspect: Make sure no damages are visible.

Replace the Start Capacitor:

Works with the start relay to boost the compressor.

1. Safety First: Unplug the refrigerator.
2. Access: Remove the rear panel of the refrigerator.
3. Locate: Find the capacitor, typically near the compressor.
4. Disconnect: Release the capacitor from its retaining bracket. Disconnect the wires.
5. Replace: Connect wires to the new capacitor, and secure it in the retaining bracket.
6. Reassemble: Reattach the rear panel.

For each of these tasks, if you’re unsure about the procedure or uncomfortable at any point, always consult a professional appliance technician. It’s crucial to prioritize safety over DIY solutions.

FAQs

How do I know if the inverter linear compressor in my LG refrigerator is malfunctioning?

If the refrigerator seems to be running but isn’t cooling, and the compressor sounds different than usual or clicks every few seconds, it might be faulty.

Is there a simple fix I can try before calling a technician for my LG fridge’s cooling issue?

Ensure the thermostat is set correctly, clean the condenser coils, check if the fridge is overloaded, and make sure the vents aren’t blocked.

How often should I clean my LG refrigerator’s condenser coils for optimal performance?

Ideally, clean the coils every 6-12 months for maximum efficiency.

Does frequently opening the fridge or keeping its door open for prolonged periods affect cooling?

Yes, doing so allows the cool air to escape, making the appliance work harder and potentially leading to cooling issues.

What’s the ideal thermostat setting for my LG refrigerator to ensure proper cooling?

For most LG refrigerators, a setting between 35°F (1.6°C) and 38°F (3.3°C) for the fresh food compartment and 0°F (-17.8°C) for the freezer is recommended.

Can a faulty door seal lead to cooling issues in my LG refrigerator?

Yes, a broken or compromised door seal can allow cold air to escape, leading to cooling inefficiencies.

Is it normal for the back of my LG refrigerator to feel hot?

Some warmth is normal due to the condenser coils releasing heat, but if it’s excessively hot, there may be an issue with the coils or the cooling system.

Conclusion

An LG refrigerator not cooling can pose a significant inconvenience, impacting food preservation and daily household operations. The underlying reasons for such a malfunction can range from simple factors like an obstructed vent or dirty condenser coils to more complex issues like a failing compressor or faulty control board. While some basic troubleshooting can be conducted by homeowners, it’s crucial to recognize when professional intervention is required, both for safety and to ensure the longevity of the appliance. Using genuine LG parts for replacements guarantees compatibility and often comes with a warranty. In the end, maintaining the efficiency of your LG refrigerator not only ensures fresh food storage but also optimizes energy consumption, making timely identification and resolution of cooling issues paramount.