Quick answer
Check the water supply and ensure the ice maker is enabled. If the water line is frozen, thaw it carefully. If these steps don’t work, test the water inlet valve or ice maker module.
Confirm the symptom
- No ice production despite a full water supply
- Ice maker is not dispensing ice
- Water line is frozen or kinked
- Error code displayed on the refrigerator control panel
- Ice maker is in the 'off' position
Tools and prep
- Screwdrivers (Phillips and flathead)
- Multimeter for electrical testing
- Flashlight for visibility
- Plastic putty knife for panel removal
- Towel or cloth for water spills
- Replacement parts if needed (valve, module, etc.)
- Turn off power to the refrigerator at the circuit breaker
- Shut off the water supply to the ice maker
Step-by-step troubleshooting
- Check Water SupplyDo: Verify the water line is connected and the shut-off valve is open.Observe: Water flows freely from the line.Means: Water supply is active.Next: If no water flow, check for kinks or frozen lines.
- Thaw Frozen Water LineDo: Apply warm (not hot) water or a hair dryer to the line to thaw ice.Observe: Water begins to flow after thawing.Means: Frozen line was the issue.Next: Restart the ice maker and monitor for normal operation.
- Verify Ice Maker SettingsDo: Check the control panel or ice maker switch to ensure it is in the 'on' position.Observe: Ice maker is enabled.Means: Settings were incorrect.Next: Wait 24 hours for the ice maker to cycle and produce ice.
- Test Water Inlet ValveDo: Use a multimeter to test the valve for continuity.Observe: Valve has no continuity or is faulty.Means: Water inlet valve needs replacement.Next: Replace the water inlet valve.
- Inspect Ice Maker ModuleDo: Check the module for error codes or physical damage.Observe: Error code is displayed or module is damaged.Means: Ice maker module is defective.Next: Replace the ice maker module.
- Check for Ice JamDo: Remove the ice bin and clear any excess ice blocking the mechanism.Observe: Ice maker arm is free to move and no ice is jammed.Means: Ice jam was preventing operation.Next: Restart the ice maker and monitor for normal operation.
- Test Freezer TemperatureDo: Check the freezer temperature with a thermometer.Observe: Temperature is above 0°F (-18°C).Means: Freezer is too warm to make ice.Next: Adjust the temperature setting to 0°F (-18°C) or lower.
- Inspect Water FilterDo: Check if the water filter is clogged or needs replacement.Observe: Water filter is dirty or expired.Means: Clogged filter is restricting water flow.Next: Replace the water filter with a new one.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Frozen Water Line Ice buildup in the water line prevents water from reaching the ice maker. | Common | Easy | None |
| Water Inlet Valve Failure A faulty valve can't open to allow water into the ice maker. | Common | Medium | Water Inlet Valve |
| Ice Maker Module Failure A defective module can't control the ice-making cycle properly. | Sometimes | Medium | Ice Maker Module |
| Incorrect Settings The ice maker may be turned off or in a pause mode. | Common | Easy | None |
| Clogged Water Filter A dirty filter restricts water flow to the ice maker. | Common | Easy | Water Filter |
| Ice Jam Excess ice can block the ice maker arm or dispensing mechanism. | Sometimes | Easy | None |
| High Freezer Temperature If the freezer is too warm, the ice maker can't freeze water. | Sometimes | Easy | None |
| Faulty Dispenser Control Board A malfunctioning board can prevent the ice maker from receiving signals. | Rare | Hard | Dispenser Control Board |
Parts matching
If you need replacement parts for your LG refrigerator ice maker, match your model to the correct components:
- Water Inlet Valve – Look for part number starting with 6800xxx or 6810xxx
- Ice Maker Module – Check for part number starting with 6801xxx or 6802xxx
- Water Filter – Use the model-specific filter, often labeled as WHxxx or UFxxx
- Ice Maker Assembly – Part number usually starts with 6803xxx or 6804xxx
- Dispenser Control Board – Part number typically starts with 6805xxx or 6806xxx
Use your refrigerator’s full model number (found inside the door or on the back) to ensure accurate part matching.
When to call a professional
- If the water inlet valve and ice maker module tests normal but the issue persists
- If you're unable to locate or replace parts without damaging the refrigerator
- If the problem involves complex electrical components or control boards
- If the refrigerator is under warranty and you don’t want to risk voiding it
- If the ice maker is not producing ice after following all troubleshooting steps
FAQ
Why is my LG refrigerator ice maker not making ice?
Common causes include a frozen water line, faulty water inlet valve, incorrect settings, or a defective ice maker module. Check these components to identify the issue.
How do I know if my water inlet valve is bad?
If there's no water flow to the ice maker or dispenser, and the valve shows no continuity with a multimeter, it’s likely faulty and needs replacement.
Can a clogged water filter stop the ice maker from working?
Yes, a clogged filter can restrict water flow, causing the ice maker to stop producing ice. Replace the filter if it’s dirty or expired.
How long does it take for the ice maker to start working after fixing the issue?
After resolving the issue, it typically takes 6–12 hours for the ice maker to start producing ice, and 24 hours to fill the ice bin.
Is it safe to use a hair dryer to thaw a frozen water line?
Yes, but use a low heat setting and avoid direct contact with plastic parts to prevent damage. Alternatively, you can let the line thaw naturally.
What should I do if the ice maker is still not working after replacing the water inlet valve?
Check the ice maker module and dispenser control board for faults. If these components are working, consult a professional technician for further diagnosis.