LG LFX25975ST/02 refrigerator Parts

For LG refrigerators like model LFX25975ST, the most common customer-reported issue is a cooling problem (refrigerator or freezer not staying cold). In many cases, the root cause is airflow or sealed-system related, but we also frequently see simpler fixes such as a failed fan, defrost issue, or a door not sealing or closing properly. For model-specific troubleshooting steps, use the LFX25975ST owner's manual.

What to check first (fast, high-impact)

• Confirm the doors fully close; this model uses an auto-closing hinge feature, but bins or food can still block closure.
• Listen for fan noise; a failed evaporator fan can cause warm temps and uneven cooling.
• Check for heavy frost on the back freezer panel; that points to a defrost problem.
• Make sure vents inside the fresh-food section are not blocked by packages.
• If the unit is running constantly or cycling oddly, review the troubleshooting chart in the manual.

Common causes and the parts that often fix them

If you are diagnosing a cooling complaint on LFX25975ST, these are common part-related culprits:

Symptom	Likely area	Example part on this model page
Warm fridge, freezer OK (or weak airflow)	Evaporator airflow	Refrigerator evaporator fan motor 4681JB1027C
Frost buildup, temps drift	Defrost sensing/heating	Refrigerator defrost sensor assembly 6615JB2005N and LG refrigerator defrost heater 5300JK1005D
Door ajar light or alarm issues, interior light odd behavior	Door switch/door closure	Refrigerator door switch 6600JB1010A
Water dispenser or ice maker issues that affect cooling indirectly (ice buildup, leaks)	Water supply components	LG refrigerator water inlet valve MJX41178908

Why it matters

Cooling problems can quickly lead to food spoilage and can also make the refrigerator run too long or too often. Catching airflow, defrost, and door-seal issues early helps prevent secondary problems like ice buildup and temperature swings.

Helpful DIY guidance

• For control-panel messages and troubleshooting direction, use LG bottom freezer refrigerator error codes.

You can also order replacement parts for your LG LFX25975ST from the parts list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026

Yes. For the LG LFX25975ST, using the correct water filter is worth it because it keeps water and ice tasting clean and helps maintain normal dispenser and icemaker flow. Replace it when the indicator reaches 0 or when output noticeably drops (see the LFX25975ST owner's manual).

What “worth it” looks like in daily use

A fresh filter pays off when it prevents the most common complaints: slow dispensing, small ice cubes, and off taste.

• Improves water taste and ice quality
• Helps reduce sediment that can restrict flow over time
• Supports steady icemaker and dispenser performance
• Makes maintenance predictable (change when indicated)

When to replace the filter

LG’s guidance for this model is performance-based.

Replace when you notice	What to do	Result
Indicator shows 0	Install a new filter	Restores filtration and flow
Dispenser slows	Replace, then purge	Clears restriction and air
Icemaker output drops	Replace, then monitor	Improves fill and cube size

After you install a new filter (avoid leaks and low flow)

We follow the same basics LG outlines for filter changes.

• Remove the protective cover from the O-rings
• Push the cartridge in firmly until it stops
• Twist clockwise about one turn until it clicks and the handle is horizontal
• Dispense water for 2 minutes to purge air and carbon fines
• Recheck the filter area for drips after purging

Why it matters

A restricted or overdue filter can mimic bigger problems (like a weak inlet valve or partially blocked line). Keeping the filter current helps your refrigerator maintain normal water pressure and consistent ice production.

For step-by-step visuals, use how to replace the water filter in an LG refrigerator. You can order LG LFX25975ST parts from the parts list for this model, or search by model on Sears PartsDirect.

Last updated: February 2026

For LG model LFX25975ST, a bottom leak is usually caused by a clogged defrost drain (meltwater overflows), a slow leak in the ice maker or water supply tubing, or a seeping water inlet valve. Start by identifying whether the water is clear (supply leak) or appears after defrosting (drain issue).

Quick checks we recommend

• Unplug the refrigerator before removing panels or handling wiring.
• Check the freezer floor for a thin sheet of ice; that points to a defrost drain backup.
• Look for drips at the back near the water inlet valve and tubing connections.
• Pull the unit forward and inspect for water trails from the rear to the front.
• Confirm the refrigerator is level so water routes to the drain pan correctly.

Most likely causes and next steps

What you notice	Most likely cause	What to do next
Water after defrosting; ice on freezer bottom	Defrost drain clogged	Thaw the ice, then flush the drain with warm water until it flows freely
Leak only when making ice or dispensing	Water line or valve seep	Inspect fittings and tubing; watch for a slow drip during fill cycles
Water near front; doors not closing tightly	Warm air causing excess frost and melt	Clean and inspect the door gasket; make sure doors close squarely

Parts that commonly relate to bottom leaks

• Drain path routing or damage: refrigerator drain tube 5251JA3003D
• Water supply line cracks or loose fittings: refrigerator water tubing MJU62070602
• Slow seep at the valve body or fittings: LG refrigerator water inlet valve MJX41178908

Why it matters

Water pooling under a bottom-mount refrigerator can damage flooring and can also lead to ice buildup in the freezer, which restricts airflow and hurts cooling performance.

For component locations and care steps, use the LFX25975ST owner's manual. You can order parts from the parts list for this model or search by model number on Sears PartsDirect.

Last updated: February 2026