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

This error means the left zone temperature has been running 10 degrees or more below the configured set point for over six hours. It indicates a sustained overcooling condition rather than a brief fluctuation. The fault is typically tied to the compressor, evaporator fan, associated relays, or the temperature sensor in the left zone.

A reset may temporarily clear the error code, but if the underlying cause is not corrected, the fault will return once the unit has run long enough to trigger the six-hour threshold again. Resetting without diagnosing and repairing the root cause is not a reliable fix. The compressor, fan, relays, and sensor should all be evaluated before assuming the issue is resolved.

Repair costs vary depending on which component is at fault. Replacing a temperature sensor typically falls in the lower range of repair costs, while a failed relay, control board, or compressor will be more expensive. In general, expect to budget anywhere from $100 to $600 or more depending on parts and labor in your area. A technician can give a more precise estimate after diagnosing the specific cause.

Start by inspecting the compressor, evaporator fan, and the relays and DC outputs that control them, as these are the primary components involved in this fault. Check whether the compressor is cycling on and off correctly or running continuously. If a relay is stuck or a temperature sensor is providing inaccurate readings, those components will need to be tested and likely replaced.

When this error is active, the left zone is operating significantly outside its intended temperature range, which can affect ice quality and the integrity of any stored items. Continued operation without addressing the fault also puts additional stress on the compressor and related components. It is best to stop using the unit for ice production until the fault is diagnosed and corrected.