LG Refrigerator Error Codes List (What Each Means)

LF refrigerator error codes don’t make much sense looking at them. It can be frustrating to know there is an issue, but you can’t figure out what is causing the error. For example, LG refrigerators have various error codes depending on the problem.

For example, Er Fs indicates an issue with your freezer sensor, while an F dS error signifies a problem with the freezer defrost sensor. Sometimes you might see an Er gF error which means there is a problem with the flow sensor, and you’ll likely have low water pressure.

If your refrigerator is on but not cooling, it could be in demo or display mode and show an OF F error code. A faulty compressor relay will produce an Er 22 error code, and you will need to replace the part as it cannot be repaired.

Since you likely won’t know what an error code means by looking at it, we’ll discuss the most common ones you’ll find, their meaning, and an easy solution to the problem. While sometimes you’ll need to contact a professional, you occasionally can fix the problem yourself.

LG Refrigerator Error Codes And Their Meanings

There are various LG refrigerator error codes you might receive, and it’s important to understand their meanings, as not every issue requires maintenance from a professional. The most common error codes you’ll find begin with “E,” “ER,” or “r,” but can vary depending on your LG refrigerator mode.

Why Are Error Codes Showing In The First Place?

Error codes show on your LG refrigerator because the unit is signaling an issue that requires your attention. Each error code represents an individual issue, but the codes can vary depending on your model.

In addition, error codes help troubleshoot, as they inform you of the exact problem your refrigerator is experiencing. For example, LG refrigerator error codes help you pinpoint exactly what is wrong with your unit instead of displaying a generic error.

While you can fix some errors, others require replacement or help from an experienced technician.

Where can you find the codes?

You can find the error codes on the same LED display screen you use to control the refrigerator’s temperature. Depending on your model refrigerator, the location of the screen may vary, but it’s likely on the front or back panel of your fridge

What Are The Most Common Codes And Their Meanings

There are several error codes you might find on your LG refrigerator, and while the codes can vary depending on the model, these are the most common codes you’ll encounter. In addition, you’ll find explanations and solutions for each error code.

If you decide to repair your fridge, ensure it is always unplugged before you perform maintenance. You should never touch the unit’s components when it is receiving power. As an extra precaution, you can turn the circuit breaker off.

LG Refrigerator Error CodeMeaningSolution
Er FS/Er F5Freezer sensor errorA faulty freezer sensor will cause this error code. The issue may be the connection between the freezer sensor and the control board.   You might also have an issue with the control board.   You should test all parts with a multimeter and replace faulty parts.
Er rSRefrigerator sensor errorThis error indicates a disconnection or shot of the refrigerator sensor and requires maintenance.
F dSProblem with the freezer defrost sensorThe defrost sensor is faulty, and you need to replace it.
r dSProblem with the refrigerator defrost sensorThe defrost sensor has malfunctioned and requires replacement.
Er HSProblem with the humidity sensorThe fridge’s humidity sensor detects the temperature and humidity level.   If the humidity sensor stops relaying data to the main control panel, you will receive this error.   You should check the wiring, control panel, and humidity sensor for functionality.
Er ISProblem with the ice maker sensorCheck the connections between the ice maker fan motor and the control panel.   If there is no damage, check the connections between the ice maker sensor and the control panel.   If all connections appear normal, you might need to replace the fan motor or ice maker sensor.
Er SSPantry sensor open or shortedYou might have a wiring problem or a short in the pantry sensor, which will require replacement.
Er rtRoom temperature sensor errorThe room temperature sensor might be faulty and have a short or wiring problem.
Er ItSystem error in ice makerFirst, check whether the ice maker is working correctly. You should check for stuck ice or other obstructions.   Perform a reset of the ice maker, and if the error persists, you may need to replace the ice maker unit.
Er gFFlow sensor error/Low water pressureYou will receive this error if the ice maker is overflowing and prevents the sensor from working.   Low water pressure prevents the ice maker from efficiently producing ice, and you will notice a slow flow of water through the dispenser.   A faulty flow sensor requires replacement.
F dH/r dHSensor did not exceed 40° F while defrostingThe temperature must rise during the defrost cycle; if this does not occur, the error will appear.   You can follow these two troubleshooting steps:   Unplug your fridge for five minutes.Plug it back in and allow ample time for a new defrost cycle.   If this doesn’t clear the error, your problem might be with the defrost heater, controller assembly, control board, or relay.
Er IFIce maker fan problemYou likely have frost build-up around the ice maker fan and need to defrost the unit.   You can defrost the unit manually or automatically.
Er FFFreezer fan problemA frost build-up can also affect the freezer fan, causing this error code.   You should unplug your fridge and leave the doors open for 8 hours.   Plug it back in and wait 24-48 hours to resume regular operation.
Er CFCondenser fan errorThe condenser fan is responsible for keeping your fridge cool.   You will see the condenser fan error when there is a signal loss with the main control.   You will want to inspect the following parts:   Condenser fan Condenser fan motorWiring HarnessPower Control Board   You should check for loose wiring and damage. A multimeter will also help access continuity.
Er COCommunication error/The Control display or board is malfunctioningYour fridge has a small computer called the control board that tells your fridge what to do.   Any loss of connection will cause the error to appear.   The issue is generally caused by loose wiring or a faulty control board.
OF   FFridge is in demo or display modeYour fridge has a function that permits it to be on without cooling. You often find this feature when fridges are displayed in a store. To deactivate the demo mode, follow these steps:   Open the fridge door and find the refrigerator and ice plus buttonsHold the buttons down at the same time until it beepsConfirm the unit is off demo mode  
Er 22Compressor relay is malfunctioningIt would be best if you replaced a faulty compressor relay as it can’t be repaired.   The relay is responsible for starting the compressor, so you must address the issue.   A relay is not expensive, and you can find it online or at an appliance parts store.   Follow these steps to replace the compressor relay:   Unplug your fridge and wait five minutes before startingYou will find the compressor relay in the back of your fridge, next to the compressor Switch out the old relay for the new relay Plug the refrigerator back in and give it ten minutes If the error code does not go away, contact a service tech for further assistance
Er 67Door cannot close properlyEnsure no food items are inside the fridge, preventing it from closing correctly.   Also, check that the drawers are fully pushed in.   Check for obstructions where the door connects to the fridge    

Most Common Problems With LG Refrigerators?

The most common problems with LG refrigerators are:

  1. Faulty seal preventing the compressor from running
  2. Water leaking from LG refrigerators often happens because of a frozen drain line or a faulty line assembly. Therefore, you should inspect the drain and ensure no clogs or obstructions.
  3. A faulty compressor can cause your refrigerator to stop cooling, which is common in LG fridges.
  1. Issues with the ice maker freezing over
  2. Warm air can enter the freezer through gaps and openings
  3. A loss in communication with the control board caused by loose wiring
  4. A broken ice maker
  5. Faulty ice maker fan
  6. A malfunctioned water inlet valve

Average Life Of Your LG Fridge?

The average life of your LG fridge varies between 10 and 20 years, depending on how you care for it. Therefore, it’s essential to address issues immediately to prevent additional problems. In addition, you should periodically check for damage to the interior and exterior of your fridge.

How Do I Run Diagnostics On My LG Refrigerator?

Some LG refrigerators have a Smart Diagnosis feature allowing you to run diagnostics from your smartphone. The high-tech feature is easy to perform, and the results will be delivered to your phone.

However, if you have a model without this feature, you can run diagnostics by putting it in test mode. Here are the steps for putting your fridge in various test modes.

Test Mode 1:

  1. Press the Freezer Temp function to put it in test mode
  2. Tap the Express Freezing and Colder buttons at the same time
  3. At this point, you can turn on the Freezer and Compressor Fan, the Defrosting Heater, the Steaming Damper, and the display LEDs show 1. 

Test Mode 2:

  1. Press the Freezer Temp button
  2. Press and hold the Express Freezing and Colder buttons for three seconds
  3. You can now test the steeping damper, the defrosting heater, and the display LEDs show 2.

Test Mode 3:

  1. Follow the same initial steps as above but hold down Express Freezing and Colder for over three seconds
  2. You can run the diagnostics test when the steeping damper is closed, the fan and compressor are off, the LED shows 3, and the defrosting heater is not on.

This YouTube video reviews how to perform a test and reset on an LG refrigerator.

Proper Refrigerator Maintenance

A part of proper refrigerator maintenance includes not overfilling your fridge to ensure it can cool and operate correctly. However, since your fridge doesn’t stop working during the day, you must perform regular maintenance to keep it running at its best.

Here is a handy checklist to ensure your refrigerator is properly maintained.

  1. Monitor the temperature of your freezer and refrigerator to ensure they continue to run correctly. You should set your freezer at 0 degrees Fahrenheit and your refrigerator at 37 to 40 degrees Fahrenheit.
  2. Clean the coils behind your refrigerator, as they can collect dust and other debris. You will need to pull your refrigerator away from the wall carefully, and you might need to remove a plate to access the coils. You can use a vacuum attachment to clean out the coils.
  3. Change the filters every six months to ensure your ice maker and water dispenser run efficiently and stay clean. You can check your owner’s manual on how to properly change the filter, as it can vary depending on the model.
  4. Always close the door. While it should go without saying, you should not leave the door open for long periods. Since most refrigerators let off a chime when left open, it’s good practice to close it after use, even if you are going right back. When you constantly open the fridge door, it sends the refrigerator into overdrive to work properly.
  5. Check the refrigerator gasket for any gaps in its sealing. If cold air can escape, your unit will work harder to operate. So, watching for tears or other damage to the gasket is essential. A damaged gasket is an easy fix, and you can find a replacement at a local hardware store.
  6. Ensure your fridge is level because if it isn’t, the doors can’t close correctly, allowing warm air to enter.
  7. Cover stored food to reduce unnecessary moisture in your fridge. Keeping your food covered will also help it stay fresh longer.
  8. Empty the ice maker occasionally to produce better-tasting ice. Sometimes, ice sits at the bottom and becomes stale, making it unpleasant to use.
  9. Don’t put hot food in your fridge because it can raise the temperature, making it challenging for the refrigerator to maintain the correct temperature.

Call a Professional For Help

When in doubt or if you can’t fix the problem, you should always call a professional for help. In addition to their expertise, they also have the appropriate tools to repair an LG refrigerator. For example, you can call a local tech or make a service request to LG online.


Various LG refrigerator error codes may appear during the life of your fridge. Understanding what each code means and how to fix it will help prolong your LG refrigerator’s life. On average, LG refrigerators last between 10-20 years, so you must address errors as they arise to ensure the proper operation of your unit.