If your ice maker is not making ice, first make sure that the "Ice Off" indicator on the refrigerator's front display panel is not lit. If it is, press the "Cubed Ice" button or the "Ice Type" button to turn the ice maker on; consult your owner's manual to determine the exact procedure for your particular model. After the "Ice Off" indicator goes off, the ice maker should resume making ice.
Ice Maker Settings
The ice maker will only make ice if it's connected to a functional water supply. Check behind the refrigerator to ensure that the appliance's water supply line is connected to the water supply line and that the connections is not leaking. Be sure, also, that the valve that controls water flow to the supply line is fully open; water pressure below 20 pounds per square inch may be too low to allow water to flow freely to the ice maker.
An incorrectly installed water filter may also interrupt water flow to the ice maker and prevent the unit from making ice. Check the filter to be sure that it is seated securely in the correct position. A clogged water filter can also interfere with water flow; a clogged filter must be replaced.
The ice maker will not function correctly if the temperature inside the freezer is too warm. Make sure the freezer's temperature control is set to maintain a temperature between 0 and 5 degrees Fahrenheit. Be aware, too, that it may take up to 24 hours after the refrigerator is first installed or after it's been unplugged for the freezer to get cold enough to make ice.
Resetting Ice Maker
If initial troubleshooting fails to resolve the problem, try resetting the ice maker. Remove the ice bin and find the test switch, which is on the side or back of the ice maker, depending on the refrigerator model. Press the button and hold it for five seconds. The ice tray should fill with water five minutes after you release the test switch.
In some cases, ice may build up between the ice maker and the freezer wall and prevent the ice maker's raker arms from pushing ice cubes into the ice bin. If you discover such a jam, carefully remove the ice so that the raker arms are able to move. If the ice jam is severe, you may need to unplug the refrigerator and allow the ice to begin to melt in order to remove it. After you clear the jam, reset the ice maker by depressing the test switch for five seconds.
If the freezer door is not closed, the ice maker will not work, and if the door switch is faulty, the refrigerator may think that the door is open even when it's closed. If the freezer light doesn't go off when you manually depress the door switch, the switch may be faulty and need to be replaced.
Ice Maker Components
Other ice maker components that may fail and cause the ice maker -- including the water inlet valve, the ice maker control module and the ice maker assembly itself -- to stop working . These parts are not serviceable by the user, and if they're the problem, they'll require replacement by a technician.