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

The Temp Hi 6H+ code means the zone temperature has been more than 10 degrees Fahrenheit above the set point for over six consecutive hours. This indicates a sustained cooling failure rather than a brief temperature spike. The most likely causes involve the compressor, evaporator fan, or the relays and DC control outputs that operate those components.

You should not rely on the unit to produce or store ice safely while this error is active. A zone temperature that is 10 or more degrees above set point for six or more hours means the ice making environment is not being maintained at the correct temperature. Any ice produced during this period may be compromised, and the underlying fault could worsen if left unaddressed.

Repair costs vary significantly depending on which component has failed. Relay replacement is typically the least expensive fix, generally in the range of $50 to $150 including labor. An evaporator fan motor replacement may run $100 to $300. Compressor replacement is the most costly repair, often ranging from $400 to $900 or more depending on the model and labor rates in your area. Diagnosing the specific failed component before ordering parts is the best way to control costs.

Some basic checks are within reach of a knowledgeable DIYer, including verifying the evaporator fan is spinning, checking for frost blockage on the evaporator coil, and confirming the compressor is attempting to run. However, testing relays, measuring DC output signals from the control board, and replacing a failed compressor require electrical diagnostic skills and proper tools. Compressor replacement in particular involves refrigerant handling, which requires EPA certification.

A reset may temporarily clear the displayed code, but the error will return if the underlying cooling problem has not been resolved. Because this fault requires six hours of sustained high temperature to trigger, simply power cycling the unit does not address the root cause. Proper diagnosis of the compressor, evaporator fan, and related control components is needed before the unit will operate correctly.