LG LFX25991ST/06 refrigerator Parts

The LG LFX25991ST is a 36-inch-wide French door refrigerator with about 24.6 cu. ft. total capacity. For model-specific use, care, and feature details (including filter and control information), use the LFX25991ST owner's manual.

When customers ask the size of an LG refrigerator like LFX25991ST, they typically mean one or more of these:

• Width (cabinet opening fit): 36 inches
• Total capacity (storage volume): about 24.6 cu. ft.
• Configuration: 3-door French door with bottom freezer
• Counter-depth style: designed for a more built-in look (depth varies by installation)

Getting the “size” right helps avoid clearance problems (doors hitting walls, not enough room to open drawers) and helps you choose the right capacity for your household.

• Measure the cabinet opening width and height before moving the unit
• Confirm you have enough front clearance for doors and the freezer drawer
• Keep airflow space behind the refrigerator to reduce cooling strain
• Replace filters on schedule to maintain airflow and water quality

If you are also planning maintenance, we recommend keeping a compatible water filter on hand, such as the LG kenmore refrigerator water filter ADQ36006101.

Last updated: January 2026

On the LG LFX25991ST refrigerator, the bottom refrigerator shelf typically removes by sliding it forward to the stop, lifting the front edge to clear the shelf supports, then pulling it out at a slight angle. For a split or folding shelf, fold it first to create clearance. See the LFX25991ST manual for shelf adjustment and bin removal details.

• Remove food and any bins/drawers that block the shelf from sliding forward.
• Slide the shelf straight out until it stops.
• Lift the front of the shelf up to disengage it from the rear supports.
• Pull the shelf out, keeping it level to avoid scraping the liner.
• If it is a folding shelf, fold the front section up before lifting and removing.

Common causes are interference from door bins, a drawer not fully seated, or the shelf being slightly twisted.

• Open both French doors fully for maximum clearance.
• Re-seat the crisper/pantry drawer so it is fully pushed in.
• Lift the shelf evenly with two hands (left and right side together).
• Check the shelf supports for damage; a broken support can bind the shelf.
• If the glass insert is loose, remove it first and then remove the shelf frame.

Removing the shelf the right way helps prevent cracked glass, broken shelf supports, and liner damage that can lead to poor fit or rattling during normal refrigerator operation.

Last updated: January 2026

Ice building up under the bottom freezer drawer on your LG LFX25991ST is most often caused by a restricted defrost drain; during defrost, meltwater can’t flow to the drain pan, so it refreezes on the freezer floor and forms a sheet of ice.

• Unplug the refrigerator before any hands-on inspection.
• Remove the freezer drawer and look for a solid ice layer on the freezer floor.
• Check for food packages or a liner blocking the drain area near the back of the freezer.
• Look for heavy frost on the rear freezer panel; that can point to a defrost airflow issue.
• After clearing visible ice, confirm water can flow down the drain (it should not pool).

For model-specific component locations and drawer removal steps, use the LFX25991ST owner’s manual.

1. Clogged drain path: Ice, debris, or sludge blocks the drain opening or tube.
2. Drain tube issue: The tube can be restricted, misrouted, or damaged.
3. Warm air leaks: A door left ajar or a poor seal can increase frost and overwhelm drainage.
4. Defrost system problems: If defrost isn’t melting frost normally, water and ice can accumulate.

If you suspect the drain tube itself is the problem, the compatible replacement for this model is the refrigerator drain tube 5251JA3003D.

When meltwater can’t drain, it refreezes and can eventually cause drawer sticking, water leaks, and temperature swings that affect ice production and food quality.

Last updated: January 2026

On the LG LFX25991ST bottom-mount refrigerator, the most common “problem” we see is uneven cooling (fresh food section too warm while the freezer stays very cold). This usually points to an airflow restriction, a defrost problem, or a control/sensor issue rather than one single universal failure.

• Verify the temperature settings on the control panel; then allow about 24 hours to stabilize.
• Make sure interior air vents are not blocked by food packages.
• Confirm both doors close fully and the gaskets seal all the way around.
• Clean dust from the condenser area and make sure there is good airflow behind the unit.
• Look for heavy frost on the freezer back wall; that often indicates a defrost system issue.

For model-specific control panel features, filter indicator behavior, and troubleshooting steps, use the LFX25991ST manual.

If the quick checks do not help, these parts commonly relate to “freezer OK, fridge warm” complaints on this design:

Uneven cooling can spoil fresh food, increase frost buildup, and make the compressor run longer than normal. Addressing airflow blockages early and checking the defrost system helps restore stable temperatures and efficiency.

Last updated: January 2026