How to Troubleshoot an LG Refrigerator Ice Maker

The South Korean-based firm, LG Electronics, Inc. not only makes computer products and mobile devices, it also makes a series of appliances for the home.

When the ice maker in an LG refrigerator is not properly making or dispensing ice, the problem may be a simple one that you can fix yourself in minutes. Power outages, changing the water filter, a locked dispenser panel are all common issues that can affect the ice maker's performance.

Water Supply Problems

The ice maker won't make ice unless it has an adequate supply of water. Check the water supply line on the back of the refrigerator to ensure that it's connected to your home's cold water supply and that the supply line's valve is open. Verify the small line has water in it and that it is not crimped or damaged in a way that prevents a free flow of water to the refrigerator.

Low water pressure can also cause problems. Water pressure must be at least 20 pounds per square inch on models without a water filter and at least 40 psi on models with a water filter for the ice maker to function properly.

An incorrectly installed or clogged water filter may interfere with the supply of water to the ice maker. Check the filter to be sure that it's seated properly, and replace it if necessary.

Water supply problems will usually affect the water dispenser as well as the ice maker. To ensure the ice maker has water, active the water dispenser on the outside of the refrigerator.

Control Setting Problems

LG ice makers have a separate power button; verify the unit is turned on and that the dispenser display is not locked. Check the automatic shutoff arm to ensure it is not in the Off position and that it is unobstructed and able to move freely. If your ice maker model is equipped with an electronic shutoff sensor, remove built up ice from the sensor so that it works properly.

Temperature Problems

The ice maker will not function properly if the temperature inside the freezer is higher than approximately 10 degrees Fahrenheit. Verify that the freezer temperature setting is low enough for proper operation. When the refrigerator is first installed, or after it's been unplugged for a long period, it may take up to 24 hours for the freezer to get cold enough to make ice.

Ice Jams

Ice cubes, ice fragments or frost may jam the ice-dispensing chute or prevent the ice maker's raker arms from turning freely; when that happens, ice won't dispense properly. Check for ice jams and remove any ice or frost build up carefully using a plastic utensil.

Door Switch

The ice maker won't function or dispense ice if the doors are not closed completely. Check the doors to verify they are not obstructed and able to close properly. In some cases, a faulty door switch can make the ice maker think the door is open when it's not; if the interior light does not go off when you manually depress the door switch, the switch may be faulty and require replacement.

Error Codes

Some of the troubleshooting error codes that may be displayed by the refrigerator on the control panel in a small display window can refer to problems with the ice maker.

The error code IF means that the ice maker fan motor is not running. This problem may be caused by ice build-up on the fan blades. Unplug the refrigerator for 4 hours to defrost the fan and check for blockages of the freezer air vents. If this doesn't solve the problem, call a technician.

The error code IS means the ice maker sensor has failed. If you see this code you will need to call a technician.

Failed Components

If none of these remedies solve the problem, there may be a failed component that must be replaced by a technician. Components that commonly fail include the water inlet valve, the control system or power module and the ice maker unit itself.

Reset and Test Button

After opening the door to the ice maker or removing its cover, look for a small button on the bottom of the motorized ice maker. With the ice maker powered on, depress this button for 5 seconds. It initializes the ice maker to begin its cycles that it goes through when dumping ice into the bin. It also resets the ice maker into the position needed to make ice after changing the water filter or a power outage.