What to Check First
- Do you see any error code on the display screen? Yes No.
- If you have any errors displaying on your refrigerator's display screen, visit our Error Codes - Refrigerator article.
- Has a sheet of ice has formed at the bottom of the freezer? Yes No.
- If you notice a sheet of ice on the bottom/floor of your freezer, check your freezer door to ensure that it closes firmly. Check door closure. Most times, slight openings around the freezer door can allow enough moisture to enter into your unit which causes frost buildup. Re-arrange food items that may be preventing the door from closing properly.
- Blocked drain line. If a sheet of ice has formed at the bottom of the freezer, this is likely caused by a blocked drain line. Steps to take: Manually defrost the unit Click here for manual defrost instructions . If a sheet of ice still forms on the floor of the freezer after a manual defrost, this indicates the drain line is blocked which will require a professional technician.
- It is strongly recommended that a trained technician should perform the repair because it will require disassembling the refrigerator. Please visit our Request a Repair page for a professional service.
- Re-arrange your food items: Food items and beverages close to the front door may prevent the door from closing properly, which allows warm air to enter into your refrigerator/freezer.
- Adjust the guide rails: Remove and reinsert the compartment drawer(s). When doing so, check if there are any items preventing the door from closing properly.
- How full is your refrigerator? If the freezer is relatively empty, there is more air circulating, and a low temperature causes more of the excess air to freeze. On the other hand, a tightly packed, full freezer can block the air vents, preventing proper air circulation that also causes frost buildup.
- Current temperature setting If the freezer's temperature is set too low, previous frost buildup may not able to fully melt during the automatic defrost cycle. If the freezer temperature is set below 0 o F, you may need to increase your temperature for at least 24 hours.
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
Frequently Asked Questions
What should I check first for LG Refrigerator - Frost Buildup?
Do you see any error code on the display screen? Yes No.
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 LB26H2200S — 29 cu. ft. Smart Standard-Depth MAX™ 4-Door French Door Refrigerator with Slide-in Gas Range and FlushFit™ Top Control Dishwasher Kitchen Package in Stainless Steel
Home Appliances · Top Appliance Deals
LG LBNC15231V — 15 cu. ft. 28 Inch Wide Bottom Freezer Refrigerator - Stainless Steel
Discover the LG 28-inch wide Bottom Freezer Refrigerator that features a reversible door and Door Cooling+ for food freshness. Click to view the LBNC15231V.
LG LF21G6201S — Essential 4-piece Kitchen Package with 29 cu. ft. 4 Door French Door Refrigerator, Freestanding Induction Range, Front Control Dishwasher and Microwave in Stainless Steel
Home Appliances · Top Appliance Deals
LG LF25S6560S — 29 cu. ft. Smart Standard-Depth MAX™ 4-Door French Door Refrigerator with Full-Convert Drawer™
Home Appliances · Top Appliance Deals
LG LF26C6230V — 26 cu. ft. Counter Depth MAX 3-Door French Door Refrigerator with Ice and Water Dispenser
Home Appliances · Top Appliance Deals