LG Refrigerator: not filling ice maker

Professional Repair Guide

What is this symptom?

Is your LG refrigerator not filling the ice maker? This common issue can prevent ice production despite the fridge being powered and connected to water. The problem could stem from a frozen fill tube, a faulty water inlet valve, or the ice maker being turned off. Identifying the cause is key to restoring your ice supply.

Urgency: Medium

Important Tips for LG Models

LG support pages list troubleshooting steps for water/ice issues including verifying water supply and ice maker enabled. (Appliance Parts Pros
LG models are known to have water inlet valve and fill tube freezing issues as common community-identified problems. (The Ice Maker Hub

Possible Causes

Frozen or clogged water fill tube

How to Identify: Ice maker doesn’t receive water, especially after periods of non-use or very cold freezer temps; ice may be visible blocking the fill tube.

Part: Water fill tube

Faulty water inlet valve

How to Identify: No water flows to ice maker; fridge water dispenser may also show weak/no water. Valve may fail electrically or mechanically.

Part: Water inlet valve

Ice maker turned off/disconnected

How to Identify: Ice maker is in OFF state; control board or switch setting disables water fill.

Part: Ice maker power switch or module

Low freezer temperature

How to Identify: Freezer too cold can freeze water line; ice maker not cycling properly.

Part: Thermostat/freezer temp control

Faulty ice maker assembly or sensor switch

How to Identify: Ice maker does not begin fill or cycle even with correct water supply and temperature; sensors may falsely detect full bin. (The Ice Maker Hub

Part: Ice maker unit/sensor arm

DIY Solutions

Check and clear frozen/blocked fill tube

Moderate 30-60 minutes

Tools Needed: hair dryer or warm cloth, screwdriver (if needed to access tube)

Disconnect refrigerator from power.
Locate the ice maker fill tube behind the ice maker.
Apply warm air with a hair dryer briefly or use warm cloth to melt ice in tube.
Ensure tube is clear and return power to test fill.
Do not overheat or apply excessive force.

⚠️ Safety First: Avoid applying excessive heat to plastic parts

Ensure ice maker is turned on

Easy 5 minutes

Locate the ice maker power switch or settings on fridge.
Ensure ice maker is in ON or auto mode.
Verify settings via fridge control panel if applicable.

Next step

Choose the next step for not filling ice maker

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Water Inlet Valve

Controls the flow of hot and cold water into the appliance.

Typical part-only price: $25 - $60
DIY difficulty: Easy
Estimated time: 15-30 mins

Optional: enter your model number

Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Ice Maker Assembly

Automatically freezes and dispenses ice cubes inside the freezer compartment.

$75 - $160 · Medium · 20-30 mins

Check fit & price

Possible related component

Thermostat

Regulates temperature by turning the heating or cooling system on or off.

$15 - $40 · Easy · 15-30 mins

Check fit & price

Model number required

Model-compatible Refrigerator parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Refrigerator Condenser Coil Brush

For routine cleaning of accessible condenser areas where the manufacturer permits it. It does not repair a sealed-system or compressor fault.

View maintenance supply

Maintenance supply

Model-Compatible Refrigerator Water Filter

A routine replacement item on models with a water filter. Match the complete appliance model and existing filter number before ordering.

Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.

Find one that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace water inlet valve

Estimated Cost: $50 - $150 for part

Replace ice maker assembly or sensors

Estimated Cost: $80 - $200

When to Call a Professional

Water continues not to fill after filling tube thaw and inlet valve check

Ice maker assembly or sensors appear faulty

Water valve replacement needed

Preventive Maintenance

Regularly defrost/freezer and clear fill tube: Frozen clogs in water fill tube
Frequency: quarterly
Replace water filter regularly (if equipped): Reduced flow or contamination in water supply
Frequency: every 6 months

Frequently Asked Questions

Why is my LG Refrigerator not filling ice maker?

Common causes include a frozen fill tube, faulty water inlet valve, or the ice maker being turned off.

How do I fix LG Refrigerator not filling ice maker myself?

Check for a frozen fill tube and clear it, or ensure the ice maker is turned on.

How much does it cost to fix not filling ice maker?

Professional repairs can range from $50 to $200 depending on the issue.

When should I call a technician for not filling ice maker?

Call a technician if DIY fixes don't work or if you're uncomfortable with repairs.

References & Sources

LG Refrigerator Troubleshooting Water/Ice Related Issues Official

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

Clogged water supply line
Faulty water inlet valve
Freezer temperature too high

User Suggested Solutions

Check and clear the water supply line. Disconnect the refrigerator from power, locate the water supply line, and inspect for kinks or clogs. Use a wet/dry vacuum to clear any blockages if necessary.
Test and replace the water inlet valve if faulty. Turn off the water supply and power to the refrigerator. Remove the valve and test it with a multimeter. If it shows no continuity, replace it with a new valve.
Ensure the freezer temperature is set correctly. Use a thermometer to check the actual temperature in the freezer. If it's above 0°F (-18°C), adjust the thermostat and allow time for the temperature to stabilize.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

LG refrigerator not filling the ice maker with water

Community Discussions

Ice maker is not filling the ice tray with water

The freezer was not cold enough to satisfy the ice maker's temperature sensor, despite being set to -4 degrees.