LG LFX33975ST/04 bottom-mount refrigerator Parts

A bottom-mount refrigerator like the LG LFX33975ST keeps the fresh-food section at a more comfortable height, so we reach everyday items with less bending. The freezer sits below, which is convenient if we use refrigerated foods more often than frozen foods.

Key advantages in daily use

• Fresh foods are closer to eye level for faster finding and fewer door-open seconds
• Less bending for produce, drinks, and leftovers (the most-used compartment)
• Freezer drawers can hold bulky frozen items and slide out for easier access
• Better organization for fresh foods because shelves and bins are in the main viewing area
• Often a good fit for families that cook frequently and use the refrigerator section most

Bottom-mount vs. top-freezer: quick comparison

Feature	Bottom-mount (like LFX33975ST)	Top-freezer
Most-used items	Easier to reach	Often requires bending
Freezer access	Pull-out drawer style	Swing door, items can stack
Best for	Fresh-food-heavy households	Frozen-food-heavy households

What to consider before choosing bottom-mount

• Freezer access: If we use the freezer constantly, bending for the lower drawer may be a tradeoff.
• Door clearance: French door and drawer designs can need more front clearance than some top-freezers.
• Maintenance: Keeping airflow clear and seals tight helps any configuration cool efficiently.

Why it matters

Refrigerator layout affects comfort, food visibility, and how long the doors stay open. Shorter door-open time can help temperature stability and reduce workload on cooling components.

For model-specific features and storage details, use the LFX33975ST owner's manual. If you need replacement parts for this model, we list them on the parts page and you can also search by model at Sears PartsDirect.

Last updated: February 2026

For the LG LFX33975ST bottom-mount refrigerator, we recommend setting the freezer to 0°F (-18°C) and the fresh food (refrigerator) section to 37°F (3°C). These targets keep food safely frozen, help prevent spoilage, and support steady ice production; confirm any model-specific notes in the owner's manual.

Recommended temperature targets

• Freezer: 0°F (-18°C)
• Refrigerator: 37°F (3°C)
• Acceptable ranges:
  • Freezer: -2°F to 2°F (about -19°C to -17°C)
  • Refrigerator: 35°F to 38°F (about 2°C to 3°C)

How to dial in the settings (best practice)

• Give the refrigerator 24 hours after a change to stabilize.
• Use an appliance thermometer in a glass of water (fresh food) and between frozen items (freezer).
• Avoid overpacking; blocked vents cause warm spots and temperature swings.
• Keep doors closed as much as possible while temperatures stabilize.
• If ice cream is too hard, raise the freezer 1 to 2 degrees; if items are soft, lower it.

Quick troubleshooting if temps will not hold

Symptom	Most common cause	What to check first
Freezer warm, fridge warm	Airflow or sealed-system issue	Clean condenser area; verify fans run
Fridge warm, freezer OK	Air not moving to fresh food	Vents blocked; frost buildup
Ice maker slow	Water flow or temp too warm	Freezer at 0°F; filter condition

If you are also seeing slow dispensing or weak ice production, a restricted filter is a common cause; the correct replacement for this model is the LG kenmore refrigerator water filter ADQ36006101. For broader part lookup by model number, use Sears PartsDirect.

Why it matters

Food safety and performance depend on stable temperatures. Around 37°F slows bacterial growth in fresh foods, and 0°F keeps frozen foods solid while helping the ice maker cycle normally.

Last updated: February 2026

On the LG LFX33975ST bottom-mount refrigerator, the most common “problem” is usually a symptom such as warm fresh food, weak ice or water dispensing, frost buildup, or leaking water. These symptoms typically trace back to airflow restrictions, a door seal issue, or a water supply component that is clogged or failing. See the owner's manual for model-specific checks and settings.

Most common symptoms and what they usually mean

• Fresh food section warm, freezer OK: airflow blocked, evaporator fan issue, or a defrost problem.
• Freezer too cold or heavy frost: defrost sensor or defrost system trouble.
• No ice or slow ice production: water supply issue, filter restriction, or ice maker fault.
• Water dispenser slow or not working: clogged filter, air in the line, or inlet valve issue.
• Water puddles under the refrigerator: drain system restriction or a drain tube issue.

Quick checks we recommend first (no tools)

1. Confirm temperature settings and give the unit 24 hours to stabilize after changes.
2. Make sure vents inside the refrigerator and freezer are not blocked by food packages.
3. Check door closing and sealing; a small gap can cause warm temps and frost.
4. If water or ice is weak, replace the filter and purge air from the dispenser.
5. If you see water under the unit, inspect the drain area and look for ice or debris.

Parts that commonly solve these problems on LFX33975ST

Symptom	Likely part area	Example part for this model
Slow water, no ice	Filtration	LG kenmore refrigerator water filter ADQ36006101
No water to dispenser/ice maker	Water supply control	LG refrigerator water inlet valve AJU72992603
Frost buildup, temp swings	Defrost sensing	Refrigerator defrost sensor assembly 6615JB2005R
Frost or warm temps from air leaks	Door sealing	Refrigerator door gasket, left ADX72930460 and refrigerator door gasket, right ADX72930461
Ice not dispensing	Dispenser drive	Refrigerator auger motor EAU59551204

Why it matters

A bottom-mount refrigerator like the LG LFX33975ST depends on steady airflow, tight door seals, and consistent water pressure. Fixing the root cause early helps prevent food spoilage, ice buildup, and extra compressor run time.

For broader troubleshooting and known display alerts, use LG bottom freezer refrigerator error codes. If you need to order replacement parts, use the parts list for LFX33975ST on this page or search by model at Sears PartsDirect.

Last updated: February 2026

On the LG LFX33975ST, ice building up on the freezer floor is most often caused by a clogged or frozen defrost drain; meltwater cannot flow to the drain pan, so it refreezes into a sheet of ice at the bottom. Clearing the drain and fully defrosting the ice usually fixes it.

What to check first (fast, no parts)

• Unplug the refrigerator before working around ice and water.
• Remove the freezer drawer and look for a solid ice slab on the freezer floor.
• Locate the drain trough under the evaporator cover area; if it is iced over, the drain is likely blocked.
• Fully defrost the freezer floor ice (a hair dryer on low works; keep heat moving and away from plastic).
• Flush the drain with hot water (a turkey baster works well) until it flows freely.

Common causes and the most likely fix

Symptom	Most likely cause	What usually solves it
Ice sheet on freezer bottom	Defrost drain frozen or clogged	Defrost and flush the drain; clear debris
Water puddles then refreezes	Drain tube restricted	Clean/replace the drain tube
Repeated icing every few weeks	Defrost system not clearing moisture	Check defrost sensor and airflow; replace failed part if needed

If the drain keeps re-freezing after you clear it, inspect the drain tube for restriction and consider replacing the refrigerator drain tube 5251JA3003D.

When a part is likely involved

If you clear the drain and the problem returns quickly, the defrost system may not be melting frost consistently. On this model, a failed defrost sensor can contribute to poor defrost performance. A common repair is replacing the refrigerator defrost sensor assembly 6615JB2005R (use the wiring and placement shown in the owner's manual).

Why it matters

A blocked drain does more than make ice; it can force water into the freezer compartment, create door sealing issues, and lead to temperature swings that affect ice maker performance and food quality.

Helpful DIY guides we recommend

• How to get rid of refrigerator puddles

You can order the drain tube, defrost sensor, and other LG LFX33975ST replacement parts from the parts list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026