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Error code reference

U-Line Refrigerator Error Code R Temp Lo 6H+

Right Zone temperature is -10° under set point for over 6 hours.

U-Line codesU-Line refrigerator codes
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What the R Temp Lo 6H+ error code actually means

Your U-Line refrigerator's right compartment has been running at least 10 degrees colder than the temperature you set, and this has been happening for more than 6 hours straight. This usually means something inside the refrigerator is not shutting off when it should, causing it to keep cooling past the target temperature. A technician will need to inspect the control board and related components to identify what is stuck on or malfunctioning.

Diagnostic procedure

The full R Temp Lo 6H+ procedure

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1
First diagnostic step
Inspect main control for proper relay operation.
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Most common causes of R Temp Lo 6H+

Ranked by how often they cause this code
  1. 1Stuck relay on main control board
  2. 2Faulty right zone thermistor
  3. 3Damper or air baffle stuck open
  4. 4Thermostatic expansion valve malfunction
  5. 5Wiring or connector fault

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Questions people ask about R Temp Lo 6H+

What does R Temp Lo 6H+ mean on a U-Line refrigerator?
This code means the right zone of your U-Line refrigerator has been running at least 10 degrees below your selected set point for more than 6 consecutive hours. It indicates a sustained over-cooling condition rather than a brief temperature swing. The most common cause is a relay on the main control board that is stuck closed, keeping a cooling component running longer than it should.
Will resetting my U-Line refrigerator clear the R Temp Lo 6H+ error?
A reset may temporarily clear the error code from the display, but it will not resolve the underlying component failure causing the over-cooling. If the faulty part, such as a stuck relay or damaged thermistor, is not repaired or replaced, the condition will continue and the code will return. A reset is useful for confirming whether the fault is persistent or intermittent, but it is not a repair.
How much does it cost to repair the R Temp Lo 6H+ error on a U-Line refrigerator?
Repair costs vary depending on which component has failed. A thermistor replacement is generally on the lower end of the cost range, typically between $75 and $200 including labor. Control board replacement tends to be more expensive, often ranging from $200 to $500 or more depending on the specific model and labor rates in your area. Getting a diagnostic assessment from a qualified technician before purchasing parts is recommended.
How do I fix the R Temp Lo 6H+ error on my U-Line refrigerator?
Start by inspecting the main control board for proper relay operation, as a stuck relay is the leading cause of this fault. If the relays appear functional, check the right zone thermistor for accurate resistance readings, inspect the damper for physical or mechanical issues, and examine all associated wiring for damage. Depending on the root cause, repairs may involve replacing the control board, thermistor, or damper assembly.
Is the R Temp Lo 6H+ error a safety concern?
Excessive cooling in the right zone can damage temperature-sensitive food or beverages stored there, particularly items that should not freeze. While the refrigerator itself is not in immediate danger from this fault, prolonged operation in this state can stress the compressor and other refrigeration components. Addressing the error promptly helps avoid food loss and potential secondary component damage.

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