Owner’s manual
Error Codes
What is the most common problem with LG refrigerators?
For the LG LFX25974ST bottom-mount refrigerator, the most common issues we see are cooling and ice maker related problems, often tied to airflow restrictions (frost buildup), water supply setup, or control settings such as Demo Mode. Many symptoms improve with basic checks and correct temperature settings from the LFX25974ST owner's manual.
Most common symptoms customers report
- Freezer frost buildup that reduces airflow and causes warm temperatures
- Ice maker buzzing or not making ice (especially when no water line is connected)
- Refrigerator not cooling even though the display and lights work (often Demo Mode)
- Condensation on the door mullion area (Energy Saver setting)
- Temperature swings from frequent door openings or blocked vents
Quick checks we recommend first (in order)
- Confirm temperature settings: default is 37°F for the fresh food section and 0°F for the freezer.
- Check for Demo Mode: if the display shows “OFF” and it will not cool, exit Demo Mode by pressing and holding Temperature and Ice Plus for 5 seconds.
- Listen for periodic buzzing: if the ice maker is on but the refrigerator is not connected to a water supply, turn the ice maker off.
- Look for frost or ice blocking vents: heavy frost points to a defrost or drain issue.
- Inspect door sealing: gaps or a warped seal can drive frost and condensation; the right fresh food seal for this model is the refrigerator door gasket, right ADX73550624.
Symptom-to-cause cheat sheet
| Symptom | Most likely cause | What to do next |
|---|---|---|
| Not cooling, display works | Demo Mode enabled | Exit Demo Mode (Temperature + Ice Plus, 5 sec) |
| Buzzing noise at times | Ice maker on with no water supply | Turn ice maker off or connect water |
| Condensation on mullion | Energy Saver disables mullion heater | Hold Energy Saver 3 sec to toggle |
| Frost buildup, warm temps | Airflow blocked by frost or poor door seal | Clear vents, check gaskets, address defrost/drain |
Why it matters
Cooling and ice maker complaints often start as small airflow or settings problems; if they continue, food temperatures can rise and the compressor may run longer than normal. Keeping vents clear, doors sealing tightly, and settings correct helps the refrigerator run efficiently.
Last updated: February 2026
What is the capacity of the LG LFX25974ST?
The LG LFX25974ST bottom-mount refrigerator has a total capacity of 24.1 cu. ft. This is the overall storage volume across the fresh food section and the freezer, and it helps you estimate how much groceries the refrigerator can hold.
What “24.1 cu. ft.” means in real use
Capacity is a volume rating, not a shelf-by-shelf guarantee. Usable space changes based on items like the ice maker, door bins, and how you arrange shelves.
- Total capacity includes both refrigerator and freezer compartments
- Usable space is typically less once shelves, drawers, and the ice bin are in place
- Airflow matters; overpacking can reduce cooling performance
- Tall items may require shelf adjustments to fit
Quick reference table
| Spec | Value | Notes |
|---|---|---|
| Total capacity | 24.1 cu. ft. | Combined refrigerator + freezer volume |
| Best practice | Leave airflow gaps | Helps maintain even temperatures |
Where to confirm model-specific specs
For the exact published specifications for your configuration (including any feature variations), check the LFX25974ST owner's manual.
Why it matters
Capacity helps you compare refrigerators, plan kitchen storage, and set expectations for how much you can store without blocking vents (which can lead to warm spots or uneven temperatures).
Last updated: February 2026
What is the average life of a LG refrigerator?
Most LG refrigerators average about 10 to 15 years of service life with normal household use and basic maintenance. For your LG LFX25974ST bottom-mount refrigerator, keeping temperatures at the recommended defaults and maintaining airflow and seals helps you reach the high end of that range (see the LFX25974ST owner's manual).
Typical lifespan and what affects it
A refrigerator’s life depends more on operating conditions than brand alone. The biggest factors are:
- Condenser cleanliness (dust buildup makes the compressor work harder)
- Door seal condition (warm air leaks increase run time)
- Stable temperatures (frequent warm-ups shorten component life)
- Ice maker and water system upkeep (clogs and leaks create secondary damage)
- Room conditions (hot garages and tight cabinets reduce cooling efficiency)
Quick maintenance that extends life
These steps are simple and make a measurable difference:
- Set and keep temps near 37°F fresh food and 0°F freezer (LG defaults)
- Clean the condenser area periodically; keep vents clear
- Make sure doors close fully; avoid overloading door bins
- Replace the water filter on schedule; a restricted filter can reduce dispenser flow
- Fix small water leaks quickly (tubing, valve, or drain issues)
Common parts tied to longevity (examples)
| System | What it impacts | Example part for LFX25974ST |
|---|---|---|
| Sealed system | Cooling performance | Refrigerator compressor TCA38091801 |
| Water filtration | Dispenser flow, ice quality | LG lt500p refrigerator water filter ADQ72910911 |
| Door sealing | Temperature stability, frost | Refrigerator door gasket, right ADX73550624 |
Why it matters
A refrigerator that runs longer and harder to hold temperature wears out high-cost components sooner (especially the compressor). Keeping proper temps and preventing air leaks reduces run time, saves energy, and helps the refrigerator reach its expected lifespan.
Last updated: February 2026
