If your ice maker is not working, start with the most likely causes and work down the list: a faulty main control board, which controls voltage to the ice maker and can be checked for visible damage and voltage with a multimeter; an overly warm freezer, since the ice maker won’t make ice efficiently if the freezer is above about 10°F (set 0 to 5°F or -18 to -15°C for best results); a defective or under-pressured water inlet valve, which needs roughly 20 psi and proper voltage to fill the ice tray; a bad ice maker assembly, which often must be replaced as a unit after you rule out the valve, water line, and fan; a failed dispenser solenoid or sticky actuator pin that prevents the dispenser door from opening; and finally a clogged or frozen fill tube that you can thaw with a hair dryer. Use a multimeter to confirm power where noted, and if you need replacement parts enter your model number on RepairClinic.com to find the exact ice maker parts for your refrigerator.
01 - U-Line Refrigerator Main Control Board
The refrigerator's main control board controls the voltage being sent to the ice maker. If the control board is defective, the ice maker may not work at all. You can inspect the board for signs of damage or a shorted component. You can also use a multimeter to determine if voltage is reaching the ice maker after reviewing the refrigerator's wiring diagram.
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02 - Freezer Temperature is Above 10 Degrees F (-12C)
If the freezer temperature is above 10 degrees Fahrenheit (-12 Celsius), the ice maker will not produce ice cubes efficiently. The freezer temperature should be set between 0 and 5 degrees Fahrenheit (-18 to -15 Celsius) for the ice maker to work properly.
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03 - U-Line Refrigerator Water Inlet Valve
The water inlet valve is an electrically-controlled valve that opens to supply water to the dispenser and ice maker. If the water inlet valve is defective, or if it has insufficient pressure, it won’t allow water to flow through. As a result, the ice maker won’t make ice. The valve requires at least 20 psi to function properly. Make sure that the water pressure to the valve is at least 20 psi. If the water pressure is sufficient, use a multimeter to check for power to the water inlet valve. If the water inlet valve has sufficient pressure and is getting power, but the ice maker won’t fill with water to make ice, replace th...e water inlet valve.
The dispenser funnel guide is the component that allows the ice from the ice maker to be properly dispensed. If the guide is obstructed or broken, the ice may not dispense as expected. Inspect the funnel guide or any obstruction or damage and replace if necessary.
One component of the ice maker assembly might be defective. Since many of the ice maker components are not sold separately, you may need to purchase and replace the entire ice maker assembly. Before replacing the ice maker assembly, check the water inlet valve, water line, and fan. If none of these parts are at fault, and the freezer temperature is at least 15 degrees Fahrenheit, replace the ice maker assembly.
If there is low water pressure coming into the refrigerator, or the water inlet valve is defective, the ice maker's fill tube can become clogged with ice and prevent water from entering the ice maker tray. You can use a hair dryer to thaw out the frozen fill tube, but you should confirm the home has sufficient water pressure and the water inlet valve is functioning properly. If the fill tube appears damaged, you should replace it with a new fill tube.
The dispenser door motor opens and closes the dispenser door to prevent cold air from escaping the refrigerator. If the dispenser door motor is defective, the dispenser door won't open. As a result, the dispenser will not dispense ice. To determine if the motor is defective, first determine if the motor is getting power. If the motor is getting power, but it won't run, replace it. You can use a multimeter to test the motor for continuity. If the dispenser door motor does not have continuity, replace it.