U-Line Ice Maker Error Code L Evap T Short

This error code means the control board has detected a short circuit in the left evaporator thermistor circuit. The left evaporator thermistor monitors temperature at the freezing plate on the left side of the unit. A shorted circuit produces an abnormally low resistance reading that the board cannot interpret as a valid temperature, so it stops operation and displays the fault. The issue is typically in the thermistor cable or the thermistor itself.

No, you should not continue using the ice maker while this error is active. The unit cannot accurately monitor evaporator temperature without a functioning thermistor, which means the freeze and harvest cycles cannot be properly controlled. Continued operation under this fault could lead to overworking components or incomplete ice production. Power the unit down until the fault is diagnosed and repaired.

Repair costs vary depending on what is found during diagnosis. If only the thermistor or its cable requires replacement, parts typically range from $20 to $80 depending on the specific component, with labor adding $75 to $200 if a technician performs the repair. If the control board is at fault, board replacement is significantly more expensive, often ranging from $150 to $400 or more for parts alone. Getting a firm quote after diagnosis is the best approach.

A knowledgeable DIYer can start by inspecting the thermistor cable for pinch points, cuts, or connector corrosion, as these are the most likely causes. If the cable is visibly damaged, replacing the thermistor assembly is a straightforward repair on most U-Line units. However, if the cable looks intact, confirming a faulty thermistor requires a multimeter to measure resistance, and if the control board is suspected, professional diagnosis is recommended.

A reset may temporarily clear the displayed code, but the error will return if the underlying wiring or thermistor fault has not been repaired. The control board checks the thermistor circuit continuously during operation and will re-trigger the fault as soon as it detects the short again. Resetting without repairing the root cause is not a solution.