HHome Appliance Help
Home › Appliance Help › LG Microwave - Troubleshooting an F3 Error

LG Microwave - Troubleshooting an F3 Error: Causes, Checks & Fixes

Errors related to abnormalities in lightwave ovens start with the letter F and are displayed as a number on the display. F-3 errors can occur when there are foreign substances around the touch button panel. Wipe off any foreign substances from the touch button panel and check again. Other errors can indicate symptoms such as defective parts, a short circuit,….

LG Microwave - Troubleshooting an F3 Error LG USA help image
TroubleshootingCooking Appliances

What to Check First

  1. Errors related to abnormalities in lightwave ovens start with the letter F and are displayed as a number on the display. F-3 errors can occur when there are foreign substances around the touch button panel. Wipe off any foreign substances from the touch button panel and check again. Other errors can indicate symptoms such as defective parts, a short circuit, communication failures, and overcurrent, so it is recommended to get an inspection by a service technician.
  2. This guide was created for all models, so the images or content may be different from your product.

Why This Can Happen

Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.

Safety and Model-Specific Guidance

Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.

Frequently Asked Questions

What should I check first for LG Microwave - Troubleshooting an F3 Error?

Errors related to abnormalities in lightwave ovens start with the letter F and are displayed as a number on the display. F-3 errors can occur when there are foreign substances around the touch button panel. Wipe off any foreign substances from the touch button panel and check again. Other errors can indicate symptoms such as defective parts, a short circuit, communication failures, and overcurrent, so it is recommended to get an inspection by a service technician.

When should I stop troubleshooting and contact LG?

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Does this guidance apply to every LG model?

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

LG CBGD2414S Cooking Appliances product image
Cooking Appliances

LG CBGD2414S — 24 Inch Compact Gas Cooktop

Discover the 24-inch Compact Gas Cooktop that features 14K BTU Dual Burner and Stainless Steel Finish. Shop CBGD2414S from LG USA.

CBGD2414S1 images

Buying Guides for This Product Type

Features & valueCooking Appliance Features Worth Paying For — Value GuideEfficiency & running costCooking Appliance Efficiency, Energy & Running-Cost GuideHousehold use caseCooking Appliance Family & High-Use Household GuideFit & installationCooking Appliance Fit, Installation & Delivery Planning

Related Help Articles

TroubleshootingLG Microwave - How to Install the Glass PlateTroubleshootingLG Microwave - What should I do when a product stops and display turns off?TroubleshootingLG Microwave - Troubleshooting the Start Button Not Working

Read the Official LG Guide