U-Line Ice Maker Error Code R Temp Lo 6H+

This code means the right zone of the ice maker has been running at least 10 degrees below the programmed set point for more than 6 consecutive hours. The unit logs this as a sustained overcooling fault to flag a problem with the refrigeration cycle, fan operation, or temperature sensing. It requires hands-on diagnosis of the compressor, evaporator fan, relays, and DC control outputs.

Continued use during an active overcooling fault is not recommended. Running the right zone significantly below its set point for extended periods can affect ice quality and may place unnecessary stress on the compressor and other refrigeration components. It is best to address the fault before relying on the unit for normal ice production.

A reset may temporarily clear the error code from the display, but it will not resolve the underlying condition causing the sustained overcooling. If the compressor, fan, or relay issue is still present, the unit will log the fault again once the 6-hour threshold is exceeded. The fault should be diagnosed and repaired rather than simply reset.

Some diagnostic steps, such as visually inspecting the evaporator fan for continuous running or checking whether the unit is cycling normally, are accessible to a knowledgeable DIYer. However, testing relays, measuring DC output signals from the control board, and evaluating compressor operation typically require a multimeter and familiarity with refrigeration controls. If those checks point to a failed relay or control board, a qualified appliance technician should handle the repair.

Repair costs vary depending on which component is at fault. Replacing a single relay is generally a lower-cost repair, typically ranging from around $50 to $150 including parts and labor. A control board replacement can range from $200 to $500 or more. Compressor replacement is the most expensive possibility and can exceed $400 to $700 with labor. Getting a diagnostic assessment first will help narrow down the cost before committing to a repair.