LG LMXC23746D Refrigerator Not Filling With Water: Safe Checks and Valve Parts

If your LG LMXC23746D refrigerator is not filling the ice maker with water, start by separating an ice-maker-only symptom from a refrigerator-wide water problem. Check whether the door dispenser supplies water, then inspect the household supply, shutoff valve, water filter, tubing, ice-maker operation, and fill tube. If those checks do not resolve the issue, the water inlet valve assembly or another ice-maker-related component may be involved.

Several components can create the same symptom. An empty ice-maker mold does not, by itself, prove that a particular part has failed. Use the checks below to narrow the symptom safely, then compare the verified options for the LG LMXC23746D refrigerator model LMXC23746D.

Is the LG LMXC23746D refrigerator receiving household water?

Begin with the least invasive checks. Confirm that the refrigerator is connected to the household water supply and that the shutoff valve is fully open. If the refrigerator was recently moved, inspect the visible water line for a sharp bend, kink, or obvious obstruction. A restricted supply can prevent water from reaching the ice maker even when the ice maker itself is operating.

Use care around the refrigerator and its water connection. Do not force a stuck valve or disconnect a water line while it is pressurized. If you need to inspect a connection, follow the appliance instructions and shut off the water supply first. If you see leaking, stop and address the leak before continuing.

Does the door dispenser work, or is only the ice maker affected?

This distinction helps organize the diagnosis:

• If the door dispenser also does not dispense water: look first at the household supply, shutoff valve, filter installation, and supply tubing.
• If the dispenser works but the ice maker does not fill: the issue may be limited to the ice-maker circuit, fill tube, ice-maker operation, or a valve path serving the ice maker.
• If water flow is weak: check for a filter or supply restriction before assuming a valve has failed.

These observations are troubleshooting clues, not a final diagnosis. Different components can produce similar results on the LG LMXC23746D.

Could the water filter or supply line be restricting flow?

Check whether the water filter is installed correctly and whether the problem began after a filter change. A filter that is not seated correctly, is obstructed, or is overdue for replacement can affect water delivery. Inspect the filter area for an incomplete installation, but do not force the filter into place.

Also inspect the accessible water supply line for kinks or signs that the line may be frozen or blocked. Do not use sharp tools or excessive heat to clear a suspected blockage. If the line appears damaged or you cannot safely determine whether it is obstructed, contact a qualified appliance technician.

Is the ice maker switched on and seated correctly?

Confirm that the ice maker is enabled and properly seated. If the refrigerator was recently moved, cleaned, reset, or serviced, check that the ice-maker assembly has not been left out of position. A power interruption or a recent filter replacement may also be relevant timing clues.

If the model’s ice maker provides a test or reset procedure, use the procedure provided for the appliance. Observe whether the ice maker runs through a test cycle. During a fill portion, listen for the sound of the inlet valve. The absence or presence of a humming sound can provide useful information, but it does not independently confirm that the valve is defective.

Could the ice-maker fill tube be frozen or blocked?

Inspect the ice-maker fill tube only when it can be done safely and without damaging the appliance. A frozen or obstructed fill tube can leave the ice-maker mold empty even when the refrigerator has water available elsewhere.

Do not chip at ice with a sharp object, puncture the tube, or apply uncontrolled heat. If the tube is visibly blocked and you are not comfortable addressing it with the appliance’s recommended procedure, arrange for qualified service. A recurring blockage may indicate that more than a simple obstruction needs attention.

Could the water inlet valve be causing the LG LMXC23746D not-filling symptom?

The water inlet valve controls water delivery into the refrigerator’s water system. Depending on the symptom, a valve-related issue may affect the door dispenser, the ice maker, or both. However, a no-fill complaint can also involve the water supply, filter, tubing, ice-maker assembly, fill tube, or controls. Replacing a valve without checking those areas may not correct the problem.

Before ordering, confirm the rating label on your appliance shows LG, model LMXC23746D, and compare the required part number with the part label or service information available to you. The verified model hub identifies the following buyable water-inlet options for this model:

• AJU72992603 — Refrigerator Certified Refurbished Water Valve Assembly. This is listed in the Water Inlet category for the LG LMXC23746D refrigerator.
• MJX62831301 — Refrigerator Water Valve. This is also listed in the Water Inlet category for the LG LMXC23746D refrigerator.

Review both options on the LG LMXC23746D refrigerator parts hub. The hub is the model-specific place to compare the verified listings. Always confirm the model label and part number before purchasing; do not rely on appearance alone or assume that a similar-looking valve is interchangeable.

How should you choose between the two verified water-valve listings?

Choose based on the part number required for your appliance and the condition or description of the listing—not solely on the symptom. The two verified products are:

• AJU72992603 Refrigerator Certified Refurbished Water Valve Assembly
• MJX62831301 Refrigerator Water Valve

If you cannot match the part number, pause before ordering and consult a qualified appliance professional. A valve replacement may not solve the symptom if the underlying cause is a blocked fill tube, restricted supply, filter issue, ice-maker problem, or control issue.

What should you check before service or replacement?

• Confirm the appliance is an LG LMXC23746D refrigerator using the model label.
• Record whether the door dispenser works.
• Check the household shutoff valve and visible tubing.
• Verify the water filter is correctly installed.
• Confirm the ice maker is enabled and seated.
• Look for a frozen or obstructed fill tube without using sharp tools or uncontrolled heat.
• Listen during a test cycle, but treat valve noise only as a troubleshooting clue.
• Match the replacement part number: AJU72992603 or MJX62831301, as appropriate.

Frequently asked questions

Why is the LG LMXC23746D ice maker empty while the dispenser works?

The issue may be isolated to the ice-maker fill path, fill tube, ice-maker operation, or a valve path. Check the ice maker and fill tube before concluding that the water valve is faulty.

Why do both the dispenser and ice maker have no water?

Check the household supply, shutoff valve, filter, and visible tubing first. A water inlet valve issue is one possibility, but it is not the only one.

Can I order a water valve by appearance?

No. Confirm the LG LMXC23746D model label and match the required part number. Verified options include AJU72992603 and MJX62831301.

Will replacing the water valve guarantee a repair?

No. Multiple components can create a not-filling symptom, so safe checks and part-number confirmation should come first.