U-Line Ice Maker Error Code 12

Error code 12 means the ice maker has detected a low water level in its reservoir. The unit is not receiving enough water to complete the ice-making cycle. This fault is designed to protect internal components from running dry. Diagnosis starts with confirming the water supply is connected, the shutoff valve is open, and that the fill valve is receiving 120V when activated.

A reset may temporarily clear the error code display, but the fault will return if the underlying cause has not been corrected. Error code 12 is triggered by an actual water delivery problem, so the machine will fault again once it attempts to fill the reservoir and detects insufficient water. Resolve the supply or valve issue first before relying on a reset.

If the fix is simply opening a shutoff valve or clearing a clogged inlet screen, there may be no parts cost at all. If the water inlet fill valve has failed, the part itself typically costs anywhere from $30 to $90 depending on the model, plus labor if you hire a technician. A service call from an appliance repair professional generally runs between $80 and $200 for diagnosis and repair, not including parts.

Start by checking that your water supply line is connected and the shutoff valve is fully open. Inspect the line for kinks and check the inlet screen on the fill valve for sediment buildup. If those checks pass, use the unit's component testing mode to activate the fill valve and confirm 120V is present at the valve. If voltage is present but no water flows, the fill valve needs to be replaced.

Error code 12 is not an immediate safety hazard to people, but it does indicate a condition that can damage the unit if ignored. Running the ice maker without adequate water can harm the water pump and other components. The machine stops ice production automatically when this fault is detected, which is a protective measure. Address the water supply issue promptly to avoid further damage.