LG LTCS24223S/07 top-mount refrigerator Parts

Yes, an LG refrigerator can have a water filter that improves the water used to make ice, but it depends on the exact model and how it is plumbed. For LG model LTCS24223S, the owner’s manual discusses connecting a water line and ice maker operation, but it does not clearly identify a dedicated, separate “ice maker-only” filter. See the LTCS24223S owner’s manual.

How filtration works for ice makers on refrigerators like LTCS24223S

On most refrigerators, the ice maker uses the same water supply as any dispenser or internal water circuit. Filtration is typically handled in one of these ways:

• No built-in filter: ice maker gets unfiltered household water.
• Built-in refrigerator filter: one filter treats water feeding the ice maker (and dispenser, if equipped).
• Inline filter: a separate filter is installed in the water line behind the refrigerator.
• Reverse osmosis system: filtration happens before water reaches the refrigerator.

If you are troubleshooting slow ice production or no ice, the water supply components matter. A common part involved is the refrigerator water inlet valve AJU73292414.

Quick checks we recommend (model-friendly)

Before buying a filter, we recommend these practical checks:

• Look for a filter housing inside the fresh food section (often upper right) or in the base grille area.
• Check whether your unit has an automatic ice maker connected to a household water line (not just an ice tray).
• Confirm the water pressure is adequate and the shutoff valve is fully open.
• Inspect the water line for kinks and make sure the ice maker is switched ON.
• If you have an inline filter already, replace it on schedule and purge air from the line.

Filter options at a glance

Setup	Where the filter is	What it affects
Built-in refrigerator filter	Inside refrigerator or grille	Ice (and dispenser if present)
Inline filter	Behind refrigerator in supply line	Ice (and dispenser if present)
No filter	None	Ice uses household water

Why it matters

A properly matched filtration setup helps reduce taste and odor issues in ice, can reduce sediment that clogs small water passages, and can help protect water system components from debris-related problems.

For step-by-step filter guidance on LG units, use our how to change the water filter in an LG refrigerator article.

Last updated: January 2026

If your LG LTCS24223S refrigerator section is cooling but the freezer is warm, the most common causes are restricted airflow between compartments, incorrect control settings (including Demo Mode), or a defrost/evaporator fan problem that prevents cold air from circulating into the freezer.

Quick checks we recommend first

• Make sure food packages are not blocking the freezer vents or the return air path.
• Confirm the freezer control is not set too warm; wait 24 hours after any adjustment.
• Check that Demo Mode is not enabled (it disables cooling).
• Listen for the evaporator fan running when the compressor is on.
• Look for heavy frost on the freezer back wall (often points to a defrost issue).

For control-setting guidance and airflow basics specific to this design, use the LTCS24223S owner’s manual.

What to look for (symptoms vs likely cause)

What you notice	What it often means	What to do next
Freezer warm, fridge cool	Airflow problem between sections	Clear vents; verify controls; check fan sound
Heavy frost on freezer back panel	Defrost system not clearing frost	Defrost manually to confirm; then test defrost components
No fan sound in freezer	Evaporator fan not running or blocked	Inspect for ice obstruction; service fan circuit
Clicking/humming, poor freezing	Sealed system or compressor start issue	Professional diagnosis recommended

Parts that commonly relate to this symptom

If you confirm a defrost-sensing problem (especially with frost buildup), a common component to test/replace is the refrigerator defrost sensor 6615JB2005W. If the freezer fan is noisy or damaged, the blade can be involved, such as the refrigerator evaporator fan blade 5901JJ1003A.

Why it matters

On LG top-mount designs like the LTCS24223S, the freezer is the primary cooling source; the refrigerator section often depends on controlled airflow from the freezer. When airflow is blocked or frost builds up, the fridge can seem “okay” while the freezer temperature rises.

Last updated: January 2026

On the LG LTCS24223S top-mount refrigerator, there is not a dedicated “freezer reset” button; the practical reset is a full power reset of the refrigerator controls. Unplug the unit (or switch the breaker off) for 5 minutes, then restore power and allow time for temperatures to stabilize.

How to do a power reset (LTCS24223S)

• Unplug the refrigerator from the outlet (preferred).
• If you cannot access the plug, turn the refrigerator circuit breaker OFF.
• Wait 5 minutes.
• Restore power.
• Set the refrigerator and freezer controls back to their normal settings.
• Wait 24 hours before judging temperature changes.

After the reset: what to check if the freezer is still warm

• Make sure packages are not blocking the air vents between the freezer and fresh food section.
• Confirm both doors close fully and the gaskets seal all the way around.
• Verify the freezer control is not set unusually warm.
• Listen for the evaporator fan running when the compressor is running.
• If you recently moved the refrigerator, confirm it is level so the doors seal properly.

Control adjustments (small changes only)

The LTCS24223S uses separate controls: the refrigerator control affects overall cooling run time, and the freezer control adjusts cold-air flow.

Symptom	First change to try	Recheck after
Freezer too warm	Move freezer control 1 step colder	24 hours
Fresh food too warm	Move refrigerator control 1 step colder	24 hours
Fresh food freezing	Move refrigerator control 1 step warmer	24 hours

For the control descriptions and recommended starting points, follow the LTCS24223S manual.

Why it matters

A power reset clears minor electronic or control “glitches” and restarts the cooling cycle. Waiting a full day helps prevent over-adjusting the controls, which can cause temperature swings and frost buildup.

Last updated: January 2026