5 Steps To Fix Your LG Microwave Showing The Error Code F3

The F3 error code is showing on your LG microwave and unsure how to fix it? The easiest way is to reset the microwave before any other troubleshooting. Simply unplug it for 5 minutes to reset the control panel.

F3 error code LG microwave

What is the LG F3 Error Code?

This error code means the microwave’s touchpad or control panel is at fault. It can be caused from wear and tear, short circuits, or spills on the control panel. Follow the guide below to fix it yourself but be sure to use caution when dealing with electrical repairs. Remember to always unplug the microwave when working on it internally.

Reasons for LG Microwave F3 Error

  1. Keypad/Control Panel Fault
  2. Gunk on the Panel
  3. Short Circuit in Components
  4. Temperature Sensor Malfunction
  5. Faulty Electronic Oven Control (EOC)
LG Microwave Fault Solution To Fix F3 Error
1. Keypad Control Panel Fault Inspect for damage or unresponsiveness. Clean with a soft cloth or replace if necessary.
2. Foreign Substances on Panel Unplug and gently clean the panel with a damp cloth to remove any foreign material.
3. Short Circuit in Components Conduct a detailed inspection of wiring and sensors, repair or replace as needed.
4. Temperature Sensor Malfunction Perform a soft reset or replace the sensor if it’s not functioning correctly.
5. Faulty Electronic Oven Control Diagnose and replace the EOC if it is found to be malfunctioning.

Resolving LG Microwave F3 Error

How to Reset LG Microwave Showing Error Code?

Do this first!: When facing an F3 error code on an LG microwave, it’s recommended to perform a full reset of the appliance before proceeding with more involved troubleshooting or repairs. This reset can often resolve errors or glitches in the system. To conduct a full reset:

  1. Unplug the Microwave: Disconnect the microwave from the power source. This action cuts off all electrical currents and can help clear any stored errors in the system.
  2. Wait for a Few Minutes: Allow the microwave to remain unplugged for a few minutes. This waiting period gives the microwave’s internal systems time to fully reset.
  3. Reconnect the Power: After waiting, plug the microwave back into the power source.
  4. Test the Microwave: Turn on the microwave to check if the F3 error code still appears.

A full reset is a simple approach to solve minor issues without needing to read into more troubleshooting or repairs. If the error persists after the reset, continue reading for further help. See the video below for how to reset your LG microwave the correct way.

Video shows how to reset an LG microwave when encountering error codes.

Step By Step Fix/Clear F3 Error Code

1. Cleaning or Replacing Keypad/Control Panel

Inspect the keypad and control panel for any visible damage or signs of wear. A simple cleaning with a soft, damp cloth might resolve issues caused by dirt or spills. However, if you notice severe damage or persistent unresponsiveness, the panel may need replacing. This involves carefully removing the existing panel, ensuring all electrical connections are disconnected safely, and then fitting a new panel, taking care to reattach all connections accurately.

2. Removing Gunk from the Touch Button Panel

Safety is paramount, so start by unplugging the microwave. Assess the panel for any foreign substances like grease or spills that could be impacting its functionality. Gently clean the panel with a soft cloth or sponge dampened with warm water, avoiding any abrasive materials or excess moisture that could cause damage. After cleaning, thoroughly dry the area before reconnecting the power to the microwave.

3. Inspecting and Repairing Wiring and Sensors for Shorts

Begin by visually inspecting the internal wiring and components for any signs of wear, damage, or burns. Utilize a multimeter to check the continuity of the wiring, paying special attention to the connections between the Electronic Oven Control (EOC) and the temperature sensor. If you’re not experienced with electrical repairs, it’s prudent to seek professional assistance, as improper handling of these components can be hazardous. Here is a guide for how to remove the weird screws that are on some microwaves.

4. Soft Reset or Replacing the Temperature Sensor

If you suspect the temperature sensor is malfunctioning, try a soft reset by heating a mixture of water and sugar for about 15-20 seconds. If this approach doesn’t solve the problem, replacing the temperature sensor might be necessary. This process involves locating the sensor, typically found near the top inside of the microwave. Once identified, carefully disconnect and remove the old sensor. The next step is to install the new sensor, paying close attention to secure all its connections properly, ensuring it functions correctly within the microwave’s system.

5. Replacing the Faulty Electronic Oven Control (EOC)

If the EOC is suspected to be at fault, it’s important to accurately diagnose its condition. Replacing the EOC involves a more intricate process of disassembling parts of the microwave to gain access, carefully removing the defective EOC, and installing a new one, making sure all connections are secure. Due to the technical nature of this repair, it may be advisable to consult a professional.

LG Microwave Help and Support

  1. What does the F3 error typically indicate in LG microwaves?
    It can point to various issues like keypad malfunctions or internal short circuits.
  2. Can I resolve the F3 error without professional help?
    Yes, these steps can often be performed with basic DIY skills. However, seek professional help if needed.
  3. What should I do if my LG microwave displays an F3 error?
    Try resetting the microwave first by unplugging it to reset.

These five steps should address the F3 error in your LG microwave. For more detailed guidance, please provide your specific microwave model number details below while explaining your exact issue and we can help you further.

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