LG Refrigerator Ice Maker Not Working? Troubleshooting Guide

An LG refrigerator ice maker not working is one of the most common service calls we handle at 911 Appliance Repair. LG is a top-selling refrigerator brand in San Diego homes, and its ice makers have unique design features that set them apart from Whirlpool, Samsung, and GE. LG French door models often use the SpacePlus ice system built into the door, many newer models include a Craft Ice maker that produces round ice balls, and most LG refrigerators connect to the ThinQ app for remote diagnostics. These features are convenient when they work, but they also introduce specific failure points. The good news is that many common causes of an LG ice maker not working are DIY-friendly and cost nothing to check. This LG refrigerator ice maker troubleshooting guide walks through the eight most common reasons an LG fridge not making ice happens, in the order you should check them, from the simplest resets to parts that require a technician. If you are in San Diego and want to skip the troubleshooting, call us at 800-929-1192 for same-day LG refrigerator ice maker repair.

TL;DR: An LG refrigerator ice maker not working most commonly has a turned-off ice maker, a frozen fill tube, a clogged water filter, or a faulty water inlet valve. Start with the test button reset and a filter check before replacing parts. If the ice maker still will not produce ice after 24 hours, call 911 Appliance Repair at 800-929-1192 for same-day LG refrigerator repair in San Diego.

Quick Checklist: LG Refrigerator Ice Maker Not Working

Before diving into individual causes, run through this 60-second checklist. It catches the most common and easiest-to-fix problems behind an LG refrigerator not making ice:

1. Is the ice maker turned on? Check the on/off button on the control panel or the ice maker itself. On LG French door models, look for the ice maker icon on the dispenser panel.
2. Is the ice bin full or jammed? An overfull bin or clumped ice can stop production. Empty it and check for stuck cubes.
3. Is the water filter old? LG recommends replacing it every 6 months. A clogged filter restricts water flow to the ice maker.
4. Is the water supply line kinked or pinched? Pull the fridge out and inspect the line behind it.
5. Is the freezer cold enough? The ice maker needs the freezer at 0 degrees Fahrenheit. If the freezer is warm, the ice maker will not cycle.
6. Has there been a recent power outage? The ice maker may need a manual reset after power is restored.
7. Is the fill tube frozen? This is a very common LG-specific issue. Check the tube that delivers water to the ice maker for ice buildup.
8. Is the water dispenser also slow? If both the dispenser and ice maker are weak, the problem is upstream in the water supply, not the ice maker itself.

If none of these solve the problem, work through the eight causes below.

1. Ice Maker Is Turned Off or Ice Plus Is Disabled

The single most common reason an LG refrigerator ice maker not working is that it has been turned off, either accidentally or by someone pressing the ice maker button on the control panel. LG models also have an Ice Plus feature that accelerates ice production for 24 hours, and if the ice maker is in an error state, Ice Plus will not activate.

How to tell: Open the freezer or look at the dispenser panel. On most LG French door models, the ice maker has a small on/off button on the front or bottom of the assembly. If the indicator light is off, the ice maker is disabled. If the display shows “Ice Off,” the ice maker has been turned off manually.

How to fix it: Press the ice maker on/off button once to turn it back on. On LG models with a dispenser panel, press and hold the ice maker button for 3 seconds until you hear a chime and the icon lights up. Wait 24 hours for the first batch of ice after reactivating the unit.

When to call a pro: If the ice maker will not turn back on after pressing the button, or if the control panel is unresponsive, the ice maker switch or the main control board may need replacement.

2. Water Supply Line Is Kinked, Frozen, or Clogged

The water supply line delivers water from your home plumbing to the refrigerator, feeding both the water dispenser and the ice maker. If this line is kinked, frozen, or clogged with sediment, the ice maker will not receive enough water to produce ice. This is one of the most common LG fridge ice maker problems we see in older San Diego homes with original plumbing.

How to tell: Check behind the refrigerator where the supply line connects. Look for sharp bends, crimps, or pinches in the tubing. If the line is frozen, the water dispenser may also work slowly or not at all.

How to fix it: Straighten any kinks in the supply line. If the line is frozen, unplug the refrigerator and use a hair dryer on low heat to warm the line gently, or leave the fridge unplugged for 2 to 3 hours to let it thaw. If the line is clogged with sediment, replace it. A new supply line costs $10 to $20 and takes 10 minutes to swap.

When to call a pro: If the supply line freezes repeatedly after thawing, the problem is likely a faulty water inlet valve leaking water into the line slowly, or a freezer temperature issue. For a broader look at LG cooling problems that can affect ice production, see our LG refrigerator not cooling troubleshooting guide.

3. Water Filter Needs Replacing

LG refrigerators use an internal water filter that removes contaminants from the water feeding both the dispenser and the ice maker. Over time, the filter becomes clogged with sediment, minerals, and debris. When that happens, water flow to the ice maker drops below the level needed to fill the ice mold, and production slows or stops entirely. A clogged filter is one of the most overlooked causes of an LG refrigerator not making ice.

How to tell: If you cannot remember the last time you replaced the water filter, it is probably overdue. LG recommends replacement every 6 months. Other signs include slow water dispensing, cloudy or bad-tasting ice, and a filter indicator light on the control panel.

How to fix it: Replace the water filter with an LG-compatible replacement. The filter is usually in the upper right corner of the refrigerator compartment, in the base grille at the bottom, or inside the refrigerator near the top. Twist the old filter counterclockwise to remove it (or push the eject button on some models), then twist the new one in clockwise until it locks. Run 3 to 5 gallons of water through the dispenser to flush air and carbon dust from the new filter before checking the ice maker. This is the cheapest and most overlooked fix when you need to fix an LG refrigerator ice maker.

When to call a pro: A filter swap is a pure DIY job. But if a fresh filter does not restore water flow, the restriction is elsewhere in the system and a technician should diagnose the inlet valve and supply line.

4. Frozen Fill Tube or Ice Maker Assembly

This is the most LG-specific issue on this list. LG ice makers, especially on French door models with the SpacePlus in-door ice system, are prone to a frozen fill tube. The fill tube carries water from the inlet valve up to the ice maker mold. If water drips slowly through the tube after the fill cycle, it can freeze and block the opening. When that happens, the ice maker cycles but no water reaches the mold, so no ice is produced. This is a frequent cause of an LG ice maker not dumping ice even when the unit appears to be running.

How to tell: Open the freezer and remove the ice bin. Look at the fill tube opening above the ice maker mold. If you see ice blocking the tube opening, the fill tube is frozen. You may also notice that the ice maker runs a test cycle but no water enters the mold.

How to fix it: Unplug the refrigerator. Use a turkey baster with warm water or a hair dryer on low heat to melt the ice in the fill tube. Do not use anything sharp or metal to chip the ice, as you can crack the tube. Once the tube is clear, run a test cycle to confirm water flows through. If the fill tube freezes repeatedly, the root cause is usually a water inlet valve that is not closing fully, allowing water to seep through and freeze.

When to call a pro: If the fill tube freezes back up within a few weeks, the inlet valve is the culprit and should be replaced by a technician. For a full overview of LG refrigerator issues beyond the ice maker, see our LG fridge repair guide.

5. Defrost System Failure

LG refrigerators use an automatic defrost cycle that melts frost off the evaporator coils every 8 to 12 hours. If the defrost system fails, frost builds up on the coils until airflow is blocked. The freezer temperature rises, and the ice maker stops producing ice because it needs the freezer at 0 degrees Fahrenheit to cycle properly. A defrost failure is one of the more serious LG refrigerator ice maker problems because it affects the entire cooling system, not just the ice maker.

How to tell: Look at the back interior wall of the freezer. If you see a thick layer of frost or ice building up, the defrost system is not working. The ice maker may have stopped producing ice at the same time the freezer started feeling warmer than usual.

How to fix it: A manual defrost (unplugging the refrigerator for 24 hours with the doors open) will temporarily restore cooling and ice production. But if the defrost system is not repaired, the frost will return within 1 to 2 weeks and the ice maker will stop again. The failed component is usually the defrost heater, the defrost thermostat, the defrost sensor, or the main control board. Testing these requires a multimeter and is best left to a professional.

When to call a pro: Defrost system repair always requires a technician. The heater, thermostat, and control board all carry live voltage and must be tested with a multimeter against LG service manual specifications. Our LG refrigerator repair service team handles these repairs across San Diego.

6. Low Water Pressure

LG ice makers require a water pressure between 20 and 120 psi to fill the ice mold properly. If your home water pressure is too low, the ice maker will not receive enough water during the fill cycle, and production will slow or stop. Low water pressure can be caused by a partially closed supply valve, a clogged supply line, old plumbing with mineral buildup, or a whole-house pressure issue. This is a common cause of an LG fridge not making ice in older San Diego neighborhoods with aging water infrastructure.

How to tell: Check the water dispenser. If water comes out slowly or in a thin stream, your pressure may be too low. You can also disconnect the supply line at the back of the refrigerator and briefly turn on the water valve into a bucket to see if the flow is strong and steady.

How to fix it: Fully open the supply valve behind the refrigerator. If the valve is already fully open and the flow is still weak, check for kinks in the line and replace the line if it is old or clogged. If the problem is whole-house low water pressure, you may need a plumber to install or adjust a pressure regulator.

When to call a pro: If the supply valve is fully open and the line is clear but pressure is still low, the issue is in your home plumbing. If pressure is fine at the wall but the ice maker still will not fill, the inlet valve is the next suspect.

7. Faulty Water Inlet Valve

The water inlet valve is an electrically controlled valve at the back of the refrigerator that opens to let water flow into the ice maker and the water dispenser. If the valve fails, either it will not open at all (no water reaches the ice maker) or it will not close fully (water continuously drips into the ice maker, causing overflow and freezing). Both scenarios stop normal ice production. A bad inlet valve is one of the most common mechanical causes of an LG refrigerator ice maker stopped working, and it is also the most common root cause behind a repeatedly frozen fill tube.

How to tell: If the water dispenser works but the ice maker does not, the valve may have failed on the ice maker side only. If neither the dispenser nor the ice maker gets water, the entire valve may be bad. You can test the valve with a multimeter for continuity. No continuity means the solenoid coil is burned out and the valve needs replacement.

How to fix it: The water inlet valve is located at the bottom back of the refrigerator, where the supply line connects. Unplug the refrigerator, shut off the water supply, and disconnect the line. Remove the valve, disconnect the electrical connectors and internal water tubes, and install the new valve. The part costs $30 to $60. If you are not comfortable working with electrical components, this is a quick and inexpensive repair for a technician.

When to call a pro: If you are not comfortable using a multimeter or working with electrical connectors, schedule a service call. Our LG appliance repair technicians carry common LG inlet valves on their vehicles.

8. Ice Maker Sensor or Control Board Failure

Modern LG ice makers rely on sensors and control boards to manage the ice-making cycle. A temperature sensor tells the ice maker when the mold is cold enough to freeze water. A level sensor detects when the ice bin is full. The main control board coordinates the timing of the fill, freeze, and harvest cycles. If any of these components fail, the ice maker may stop working entirely or produce ice erratically. On LG models with the ThinQ app, you may receive a smart alert when a sensor fails.

How to tell: This is one of the harder causes to diagnose because the symptoms mimic other failures. The ice maker may fill with water but never harvest the ice, or it may harvest ice but never refill. The control panel may display an error code or the ice maker indicator may blink.

How to fix it: Diagnosing a sensor or control board failure requires testing live electrical components with a multimeter and comparing readings to LG service manual specifications. On many LG models, the ice maker module and the ice maker assembly are one integrated unit, so the entire assembly may need replacement. This is a job for a professional technician.

When to call a pro: Always. Sensor and control board diagnosis requires specialized test equipment and access to LG service documentation. A misdiagnosis here means ordering the wrong part and delaying the repair.

LG Craft Ice Maker Not Working

LG Craft Ice is a feature on select LG French door refrigerators that produces round, slow-melting ice balls from a separate Craft Ice maker in the freezer compartment. When the LG craft ice maker not working issue arises, the troubleshooting steps are similar to the standard ice maker, but there are some differences. The Craft Ice maker has its own assembly, its own water fill path, and its own sensor system. It also runs on a slower cycle, producing about 3 to 6 ice balls per day under normal conditions.

Common Craft Ice problems: The most frequent cause is a frozen or jammed Craft Ice tray. The tray rotates to release the ice balls, and if ice sticks to the tray, the rotation fails and production stops. A second common cause is the same frozen fill tube issue that affects the standard ice maker. Third, the Craft Ice maker has its own sensor that detects whether the tray is in the correct position, and if that sensor fails, the unit will not cycle.

How to fix it: First, check whether the Craft Ice feature is turned on in the LG ThinQ app or on the control panel. Some users accidentally disable it. Second, open the freezer and inspect the Craft Ice tray for stuck ice balls. If ice is stuck, unplug the refrigerator and let the tray thaw for 1 to 2 hours, then remove the stuck ice by hand. Third, run a test cycle by pressing the test button on the Craft Ice assembly. If the tray rotates but no water fills, the fill tube or inlet valve is the problem. If the tray does not rotate at all, the Craft Ice motor or sensor has failed and the assembly needs replacement.

For LG french door refrigerator ice maker repair that covers both the standard and Craft Ice systems, call 911 Appliance Repair at 800-929-1192.

LG Ice Maker Reset: Step-by-Step Instructions

Resetting the ice maker is the first troubleshooting step and resolves a surprising number of cases. An LG refrigerator ice maker reset clears electronic glitches and forces the unit to start a fresh cycle. Here is the step-by-step process for the most common LG ice maker types.

Step 1: Locate the ice maker. On LG French door refrigerators with the SpacePlus system, the ice maker is in the upper left corner of the freezer door. On bottom freezer models, it is on the top shelf of the freezer. On side-by-side models, it is on the inside of the freezer door.

Step 2: Find the test button. On most LG ice makers, it is a small button on the bottom or front of the ice maker assembly. It may be labeled “Test” or have a small icon. On some models, you access it by removing the ice bin first.

Step 3: Press and hold the test button for 3 seconds until you hear a chime. The ice maker will begin a test cycle. During this cycle, it will fill the mold with water, wait for it to freeze, and then attempt to harvest the ice. The full test cycle takes about 6 hours on most LG models.

Step 4: If the test cycle fills the mold with water, the water supply is working. Wait 24 hours for the ice to freeze and harvest. If the test cycle does not fill the mold, the problem is in the water supply, inlet valve, or fill tube.

Step 5: For a full power reset, unplug the refrigerator for 1 minute, then plug it back in. This resets the main control board and can clear electronic glitches. On some LG models, you can also press and hold the Freezer and Ice Plus buttons simultaneously for 3 seconds to force a control board reset.

After a reset, the ice maker needs up to 24 hours to produce the first batch of ice. Do not expect immediate results.

When to Call a Professional

Some of these fixes are simple enough to do yourself: turning the ice maker on, replacing the water filter, straightening a kinked supply line, thawing a frozen fill tube, and running a reset. But anything that involves the water inlet valve, the ice maker module, the control board, the Craft Ice assembly, or the defrost system is best left to a professional. Attempting these repairs without the right tools and training can cause further damage and void any remaining warranty coverage.

At 911 Appliance Repair, we have been repairing LG refrigerators in San Diego for over 30 years. We are a family-owned business since 1991 with an A+ BBB rating and 557 reviews at 4.8 stars. Our technicians carry common LG replacement parts on their service vehicles, including water inlet valves, ice maker assemblies, Craft Ice assemblies, defrost heaters, and control boards, so most repairs are completed in a single visit. All work is backed by a warranty on parts and labor.

Call 800-929-1192 to schedule same-day LG appliance repair, or visit our LG refrigerator repair service page to choose an appointment time. We also handle full LG fridge repair for defrost system and sealed system problems. You can also browse our blog for more troubleshooting guides, including our LG dryer not heating guide, our LG washer repair guide, our LG dishwasher repair guide, and our LG oven repair guide. For a cross-brand comparison on the same symptom, see our Whirlpool refrigerator ice maker not working guide and our Samsung ice maker not working guide.

Frequently Asked Questions

How do I reset my LG refrigerator ice maker?

Locate the test button on the bottom or front of the ice maker assembly. Press and hold it for 3 seconds until you hear a chime. The ice maker will run a test cycle that fills the mold with water, freezes it, and harvests the ice. If that does not work, unplug the refrigerator for 1 minute and plug it back in to reset the control board. On some LG models, you can also press and hold the Freezer and Ice Plus buttons simultaneously for 3 seconds. After either reset, wait 24 hours for the first batch of ice.

Why is my LG fridge not making ice but the water works?

When the water dispenser works but the ice maker does not, the water supply and filter are fine. The problem is isolated to the ice maker circuit. The most common causes on LG models are a frozen fill tube, a failed water inlet valve on the ice maker side, a frozen ice maker assembly, or a bad ice maker module. Run the test cycle to narrow it down. If the test cycle fills the mold but the ice maker does not harvest, the module or sensor is likely bad.

How long does it take for an LG ice maker to make ice after a reset?

After a reset, an LG ice maker typically takes up to 24 hours to produce the first batch of ice. The ice maker needs to fill the mold, freeze the water, and harvest the cubes. The exact time depends on freezer temperature, how often the door is opened, and whether the unit was fully thawed before the reset. LG Craft Ice takes longer, producing about 3 to 6 round ice balls per day.

What is the most common reason an LG refrigerator stops making ice?

The most common reason is a frozen fill tube, which is a well-known LG-specific issue. Water seeps through the inlet valve after the fill cycle and freezes in the tube, blocking water from reaching the ice maker. After that, the most frequent causes are a clogged water filter, a turned-off ice maker, and a faulty water inlet valve. Replacing the water filter, thawing the fill tube, and running a test cycle reset resolves a large percentage of cases.

Is it worth repairing an LG ice maker or should I replace it?

In most cases, repairing is worth it. The most common fixes (water filter, supply line, fill tube thaw, inlet valve) cost $50 to $200 with labor. A full ice maker assembly replacement runs $200 to $400. A Craft Ice assembly replacement runs $300 to $500. A new LG refrigerator costs $1,500 to $4,000. If your refrigerator is under 10 years old and the repair costs less than half the value of the fridge, repair is the better choice.