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

The Temp Lo 6H+ code means the ice maker zone temperature has been more than 10°F below the programmed set point for over six consecutive hours. It is a sustained low-temperature fault that indicates the refrigeration system is cooling beyond its target range for an extended period. This is typically caused by a compressor or evaporator fan that is not cycling off properly, often due to a stuck relay or failed control board output.

Continued operation with this fault active is not recommended. The unit is running significantly colder than intended, which can affect ice quality, cause components to operate outside their designed parameters, and potentially lead to additional failures if the root cause is a stuck relay or runaway compressor. The unit should be inspected promptly.

Repair costs vary depending on the failed component. Relay replacements are generally the least expensive fix, typically in the range of $50 to $150 for parts and labor. Control board replacement can range from $200 to $500 or more depending on the board and labor rates. Temperature sensor replacement usually falls in the lower to mid range. Getting a diagnostic service call first will help identify the exact component before committing to a repair cost.

Some basic checks, like confirming proper installation conditions and ambient temperature, can be done without special tools. However, diagnosing compressor relay operation, DC output signals from the control board, and temperature sensor accuracy requires electrical testing equipment and familiarity with refrigeration control systems. Most repairs identified by this fault will require a qualified technician.

A reset may temporarily clear the displayed code, but if the underlying cause is not corrected, the fault will return once the six-hour threshold is met again. Resetting without repairing the faulty relay, control board output, or sensor does not resolve the problem. Always address the root cause before relying on a reset.