U-Line Ice Maker Error Code LED 2 flashing

LED 2 flashing indicates the control board has detected an open thermistor condition, meaning one or more temperature sensors is reading outside acceptable limits or showing an open circuit. The liquid line sensor threshold is approximately 185 degrees Fahrenheit. Depending on which sensor has failed, ice production, refrigerator cooling, or both may be affected.

It depends on which sensor has failed. If the refrigerator sensor is the faulty one, the refrigerator compartment shuts down, which means food safety could be a concern if perishables are stored in that section. If the bin or liquid line sensor has failed, the refrigerator continues operating but ice making stops. In either case, the fault should be addressed promptly to avoid further damage to the refrigeration system.

Repair costs vary depending on the failed component and labor rates in your area. Thermistor replacement is generally one of the less expensive ice maker repairs, with parts typically ranging from around $20 to $80 and labor adding to that total. If the wiring harness or control board is involved, costs will be higher. Getting a diagnostic quote before authorizing repairs is recommended.

Start by checking each thermistor for proper resistance and continuity using a multimeter, focusing on the bin sensor, liquid line sensor, and refrigerator sensor. Also inspect the wiring harness and connectors for damage or loose connections. If a thermistor measures open or out of range, it will need to be replaced. If all sensors and wiring check out, the control board may require evaluation.

A power cycle may temporarily clear the fault display, but if a thermistor is genuinely open or out of range, the error will return once the control board performs its sensor check. The underlying cause must be identified and corrected before the error will clear permanently. Resetting without repair is not a solution.