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Error code reference

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

Left zone temperature is +10° over set point for over 6 hours.

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What the L Temp Hi 6H+ error code actually means

This error means the left side of your U-Line ice maker has been too warm, more than 10 degrees above where you have it set, for over 6 hours straight. It is most often caused by a door that is not closing or sealing properly, letting warm air inside. If closing the door does not clear the problem, a technician will need to inspect the unit.

Diagnostic procedure

The full L Temp Hi 6H+ procedure

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1
First diagnostic step
Verify door is closed and sealing. Contact customer care if persistent.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of L Temp Hi 6H+

Ranked by how often they cause this code
  1. 1Door not fully closed or poor gasket seal
  2. 2Dirty or blocked condenser
  3. 3Evaporator fan failure
  4. 4Low refrigerant charge or refrigeration system fault
  5. 5Left zone temperature sensor fault

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Questions people ask about L Temp Hi 6H+

What does L Temp Hi 6H+ mean on a U-Line ice_maker?
The L Temp Hi 6H+ code means the left zone temperature has been 10 degrees or more above the configured set point for over 6 consecutive hours. The unit's temperature monitoring system triggers this alert when cooling cannot be maintained for that extended duration. It signals a problem with heat infiltration, cooling capacity, or potentially the temperature sensor itself. Addressing the root cause promptly helps prevent ice quality issues and potential food safety concerns.
Will resetting the unit clear the L Temp Hi 6H+ error?
Resetting the unit may temporarily clear the displayed error code, but it will not resolve the underlying cause. If the left zone continues to run more than 10 degrees above set point, the error will return after another 6-hour period. A reset is only a lasting fix if the root cause, such as a door left open, has already been corrected before the reset is performed.
How much does it cost to repair the L Temp Hi 6H+ error on a U-Line ice maker?
Repair costs vary widely depending on the cause. Simple fixes like cleaning the condenser or adjusting the door gasket may cost little to nothing beyond a service call fee, which typically ranges from $75 to $150. Replacing a door gasket or evaporator fan motor generally falls in the $150 to $350 range including parts and labor. Refrigeration system repairs involving refrigerant or compressor work can range from $300 to $600 or more depending on the extent of the fault.
How do I fix the L Temp Hi 6H+ error on my U-Line ice maker?
Start by checking that the door closes fully and that the door gasket is clean and sealing tightly against the cabinet with no gaps or tears. Make sure the condenser area is free of dust and debris restricting airflow. If the error persists after these checks, contact U-Line customer care, as a technician will need to inspect the refrigeration system components such as the evaporator fan, compressor, and refrigerant charge.
Is the L Temp Hi 6H+ error a safety concern?
Yes, a sustained temperature rise of 10 degrees or more above set point for over 6 hours can affect ice quality and potentially the safety of any perishable items stored in the unit. It is important to address this error promptly rather than simply resetting it and continuing normal use. If the compartment temperature has risen significantly, inspect stored contents and discard anything that may have been compromised.

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