LG LFX25974ST/04 refrigerator Parts

For the LG LFX25974ST refrigerator, the compressor (Linear/Inverter) warranty is typically 10 years parts and 5 years labor. For the complete coverage terms and what is excluded, we recommend checking the LFX25974ST owner’s manual that matches your exact unit information.

What this warranty usually covers

LG compressor coverage is focused on defects in materials or workmanship under normal household use. Coverage details can vary by purchase date and region, so we treat the manual and your purchase paperwork as the final word.

Common items addressed in warranty language include:

• Which components are covered (for example, compressor system vs. other parts)
• Parts coverage length vs. labor coverage length
• Proof-of-purchase requirements
• Service process and authorized servicer requirements
• Exclusions (installation issues, misuse, cosmetic items, etc.)

Quick reference: parts vs. labor

Coverage type	What it means	Example
Parts	The covered component itself may be provided at no charge	Compressor part replacement
Labor	The work to diagnose/replace the covered component may be covered	Technician labor for compressor service

If you are troubleshooting a compressor-related issue

If your LFX25974ST is not cooling, is unusually loud, or is repeatedly clicking, compressor system components may be involved. When you are ready to identify the correct replacement component for this model, use the model-matched parts listing such as the refrigerator compressor TCA38091801.

Why it matters

Warranty terms affect your out-of-pocket cost. Knowing whether labor is covered (not just the part) helps you decide whether to schedule service first or start with DIY diagnosis.

Last updated: January 2026

On the LG LFX25974ST bottom-mount refrigerator, the most common “problem” customers describe is a cooling imbalance: the fresh food section runs warm while the freezer stays very cold. We use the troubleshooting steps in the LFX25974ST manual to narrow this down to airflow, fan, defrost, or temperature-sensing issues.

Quick checks we recommend first

• Confirm the unit is not in Demo Mode (cooling is disabled even though the display works).
• Set temperatures to the typical defaults: 37°F for the refrigerator and 0°F for the freezer.
• Make sure vents inside the fresh food section are not blocked by food packages.
• Verify doors close and seal fully; a small air leak can warm the refrigerator section.
• Listen for the evaporator fan; if it is not running, cold air will not move to the refrigerator.

Likely causes when the freezer is cold but the fridge is warm

Cooling imbalance usually comes from one of these categories:

Symptom you notice	Most likely area	What to inspect next
Freezer cold, fridge warm	Airflow problem	Blocked vents, iced-over evaporator area, fan not moving air
Frost buildup in freezer	Defrost system issue	Defrost heater, defrost sensor, airflow restrictions
Temps swing up and down	Temperature sensing/control	Sensor/thermistor, control logic
Loud fan noise or no fan	Fan motor issue	Fan blade obstruction, failed motor

If you suspect a failed fan motor, the compatible refrigerator evaporator fan motor 4681JB1027C is one of the key parts that drives airflow through the evaporator and into the fresh food section.

Why it matters

When the refrigerator section warms up, food safety and freshness are affected first (milk, deli items, leftovers). Catching an airflow or defrost issue early can also prevent heavy frost that strains the cooling system.

Helpful DIY resources

• LG bottom freezer refrigerator error codes (useful if the display shows an error)
• Diagnosing refrigerator evaporator fan problems video (helps confirm airflow/fan symptoms)

Last updated: January 2026

If your LG LFX25974ST bottom-mount freezer is not freezing, the most common causes are the freezer being set too warm, Demo Mode being enabled (cooling off), restricted airflow from overpacking or frost, or a cooling-system failure such as a bad evaporator fan or compressor issue. Use the LFX25974ST manual to confirm control settings and modes.

Quick checks we recommend first

• Set the freezer to 0°F (-18°C) (the default setting for this model).
• Make sure the display is not showing “OFF” (Demo Mode disables cooling).
• Confirm the freezer drawer closes fully and the gasket seals all the way around.
• Do not block air vents with food; leave space for circulation.
• Wait 24 hours after changing settings to judge results.

What to check next (common failure points)

Airflow problems in the freezer

If the freezer is warm and the refrigerator section is closer to normal, poor airflow is a top suspect.

• Listen for the evaporator fan when the compressor is running.
• If the fan is not running, is loud, or is intermittent, the refrigerator evaporator fan motor 4681JB1027C is a common repair item for this model.
• If you see heavy frost on the freezer back wall, a defrost problem is likely; on this model, the specific failed defrost component cannot be identified without testing.

Compressor start or compressor problems

If you hear repeated clicking or buzzing from the back and cooling is weak:

• The compressor may be struggling to start or overheating.
• A failed overload can shut the compressor down; check the refrigerator compressor overload protector 6750CL0001D.
• If the compressor runs but the freezer still will not reach temperature, a compressor or sealed-system issue is possible; the listed compressor for this model is the refrigerator compressor TCA38091801.

Symptom-to-likely-cause guide

What you notice	What it often points to	What to check
Display shows “OFF”	Demo Mode	Exit Demo Mode per manual
Fridge cool, freezer warm	Airflow/evaporator issue	Fan operation, frost pattern
Heavy frost on freezer back wall	Defrost system issue	Defrost test and airflow
Clicking every few minutes	Compressor start/overload	Overload, compressor health

Why it matters

A freezer that is not freezing can spoil food quickly and can force the refrigerator to run longer than normal. Checking settings and airflow first helps avoid unnecessary parts replacement and points you to the right repair.

Last updated: January 2026