LG LFX28979ST/01 refrigerator Parts

The LG LFX28979ST is a large-capacity bottom-mount refrigerator; units in this LG 36-inch French door family are typically about 27.6 cu. ft. total capacity. For the exact published capacity for your specific LFX28979ST, confirm it in the LFX28979ST owner's manual.

How to confirm the exact capacity on your refrigerator

We recommend checking the model label and the manual so you match the capacity to your exact configuration.

• Look for the model and serial label inside the fresh food compartment (often on a side wall).
• Verify the model number reads LFX28979ST (not a close variant).
• Check the specifications section in the LFX28979ST owner's manual.
• If you are comparing refrigerators, note that “total capacity” includes both refrigerator and freezer sections.
• Use the capacity number when shopping for storage accessories or planning food storage zones.

Typical capacity range for this style

Most LG 36-inch French door, bottom-mount refrigerators fall into a narrow capacity range.

Refrigerator style	Typical total capacity
36-inch French door bottom-mount (like LFX28979ST)	26 to 29 cu. ft.
Compact/top-freezer units	10 to 18 cu. ft.

Why it matters

Capacity helps you compare models accurately and set expectations for usable space. It also affects how quickly the refrigerator recovers temperature after door openings and how you organize airflow around shelves and bins.

Last updated: January 2026

The most common problems we see on LG refrigerators like model LFX28979ST are cooling issues and ice maker or water dispenser problems. These symptoms are often tied to airflow restrictions, a failing fan or sensor, or a water supply/valve issue; start with basic checks before replacing parts.

Most common issues (and what you’ll notice)

• Not cooling or warm temperatures: food softening, freezer thawing, compressor running a lot
• Ice maker not making ice: empty bin, slow production, small cubes
• Water dispenser slow or not dispensing: weak stream, sputtering, no water
• Frost buildup or temperature swings: ice on back wall, noisy fan, inconsistent temps
• Door not sealing well: moisture, condensation, warm spots near the door edge

Quick checks we recommend first

1. Confirm settings: set fresh food to about 37°F and freezer to about 0°F.
2. Check door closure: make sure bins are not blocking the doors; inspect gaskets for gaps.
3. Improve airflow: do not block vents with food; leave space around the back wall.
4. Clean condenser area: dust buildup can reduce cooling efficiency.
5. For ice and water: verify the household shutoff valve is fully open and the supply line is not kinked.

Parts that commonly relate to these symptoms on LFX28979ST

Symptom	Common suspect	Example part for this model
Warm fridge/freezer, odd defrost behavior	Defrost sensor	Refrigerator defrost sensor assembly 6615JB2005N
Ice maker not producing	Ice maker assembly	Refrigerator ice maker assembly AEQ73110205
No water to dispenser/ice maker	Water inlet valve	Refrigerator water inlet valve AJU73432801
Interior lights act up, door alarm issues	Door switch	Refrigerator door switch 6600JB1010A

Why it matters

Cooling, ice, and water problems can look similar, but the fix is very different. A simple airflow or door-seal issue can mimic a major failure, while a weak water supply can mimic an ice maker defect. Using the troubleshooting steps in the LFX28979ST owner’s manual helps you narrow the cause before ordering parts.

Helpful DIY guidance

• Use how to replace the water filter in an LG refrigerator when ice or water flow is weak or tastes off.
• If the display shows an error, check LG bottom freezer refrigerator error codes to match the code to the likely system involved.

Last updated: January 2026

A bottom leak on LG model LFX28979ST is usually caused by a clogged or frozen defrost drain (water overflows and exits underneath) or a slow leak in the water supply, filter head, or ice maker fill system. Use the LFX28979ST owner's manual to locate access panels and routing.

Quick checks to pinpoint the source

• Turn off the water supply to the refrigerator for 2 to 4 hours; if leaking stops, it is in the water/ice system.
• Check the freezer floor for a sheet of ice; that points to a defrost drain issue.
• Look under the crisper area for pooled water; that often tracks back to the defrost drain.
• Inspect the rear water connections for drips and wet insulation.
• Note when it leaks: after defrost, only during dispensing, or randomly.

Common causes and what to do

Defrost drain clogged or frozen

1. Unplug the refrigerator.
2. Melt ice at the drain area with warm water (not boiling).
3. Flush the drain until water runs freely to the drain pan.

Water line, filter head, or inlet valve seep

• Reseat push-in fittings; trim a small amount off the tubing end if it is deformed.
• Replace cracked tubing with refrigerator water tubing MJU62070602.
• If leaking at the filter head area, replace refrigerator water filter head ADQ36011715.
• If dripping at the valve, replace refrigerator water inlet valve AJU73432801.

Symptom-to-cause guide

Symptom	Most likely cause	Best first step
Ice sheet on freezer bottom	Defrost drain clogged/frozen	Clear and flush drain
Leak only when dispensing	Tubing or filter head leak	Inspect fittings and tubing
Random puddles, ice near ice maker	Inlet valve seep or fill tube issue	Inspect valve and fill area

Why it matters

Water under the refrigerator can damage flooring and can also hide ice buildup that restricts airflow, which reduces cooling performance.

For prevention tips after repairs, use how to prevent water dispenser and ice maker problems.

Last updated: January 2026