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Error code reference

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

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

U-Line codesU-Line refrigerator codes

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

First step from the service manual

If excessive frost is also noted, inspect door and door gasket for proper seal and alignment.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What R Temp Hi 6H+ means on a U-Line refrigerator

The R Temp Hi 6H+ error code on a U-Line refrigerator indicates that the right zone temperature has exceeded its set point by 10 degrees Fahrenheit or more and has remained in that elevated state for longer than six continuous hours. This is a sustained thermal fault, not a momentary temperature spike. The refrigerator's control board monitors zone temperatures in real time and only triggers this alert after the threshold has been breached for the full six-hour window, meaning the cooling system has been unable to recover the right zone to within an acceptable range for an extended period.

The right zone cooling circuit relies on several interdependent components working correctly: the evaporator, condenser coils, refrigerant charge, expansion device, compressor, and the fans that circulate air through the cabinet. A failure or degradation in any of these can result in insufficient cooling. The door gasket and door alignment are specifically called out as a first diagnostic step because a poor seal allows warm, humid ambient air to enter the compartment continuously. Over six hours, this thermal load can overwhelm the cooling capacity and simultaneously cause frost accumulation on the evaporator, which further restricts airflow and compounds the problem.

If the door seal is intact and aligned correctly, the fault likely points deeper into the refrigeration system. Possibilities include a dirty or obstructed condenser, a failing evaporator fan motor that is not moving cold air through the right zone, a defrost system problem causing ice buildup on the evaporator, or a refrigerant leak reducing system capacity. Each of these conditions must be systematically ruled out before component replacement is pursued.

Source: manufacturer service documentation.

Common causes of R Temp Hi 6H+

  1. 01

    Faulty or misaligned door gasket

    Part replacement

    A damaged, warped, or poorly aligned door gasket allows warm air to leak into the right zone continuously. Check for visible gaps, tears, or areas where the gasket does not make firm contact with the cabinet frame, and look for excessive frost buildup as a secondary indicator.

  2. 02

    Frost-blocked evaporator

    Part replacement

    A malfunctioning defrost heater, defrost thermostat, or defrost timer can allow ice to accumulate on the evaporator coil, blocking airflow to the right zone. If you notice frost or ice buildup inside the unit beyond normal levels, the defrost system should be tested.

  3. 03

    Condenser coils obstructed or dirty

    Wiring / connection

    Dust and debris on the condenser coils reduce the unit's ability to reject heat, lowering overall cooling efficiency. Inspect and clean the condenser coils and ensure adequate ventilation clearance around the unit.

  4. 04

    Evaporator or condenser fan motor failure

    Part replacement

    If the fan responsible for circulating air through the right zone has failed or is running intermittently, temperatures will rise even if the refrigerant system is functioning correctly. Listen for unusual noise or silence from the fan compartment and verify the motor spins freely.

  5. 05

    Low refrigerant charge or refrigerant leak

    Part replacement

    A partial or complete loss of refrigerant reduces the system's cooling capacity and will prevent the right zone from reaching or maintaining the set point temperature. This diagnosis requires gauges and must be performed by a certified technician.

See the test procedure for each cause

Frequently asked questions about R Temp Hi 6H+

What does R Temp Hi 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 above the set point temperature for more than six consecutive hours. The control board tracks zone temperatures continuously and only triggers this alert after that sustained threshold is crossed. It indicates the cooling system has been unable to bring the right zone back down to the target temperature for an extended period. Food safety may be compromised if the condition is not addressed promptly.
How do I fix the R Temp Hi 6H+ error on my U-Line refrigerator?
Start by inspecting the right zone door and door gasket for any gaps, tears, or misalignment, especially if you also notice frost buildup inside the unit. If the door seal is good, check that the condenser coils are clean and that airflow around the unit is not obstructed. If neither of those steps resolves the issue, internal components such as the evaporator fan, defrost system, or refrigerant circuit will need to be tested by a qualified technician.
Will resetting my U-Line refrigerator clear the R Temp Hi 6H+ error?
A reset may clear the error code from the display temporarily, but it will not resolve the underlying cause. If the cooling problem is still present, the code will return once the unit has again failed to maintain the right zone temperature for six hours. Resetting without diagnosing and correcting the root cause risks further food spoilage and potential damage to the appliance.
Is my food safe when the R Temp Hi 6H+ error appears on a U-Line refrigerator?
Potentially not. This code indicates the right zone has been 10 or more degrees above the set point for over six hours, which may mean temperatures have risen into a range where bacterial growth accelerates. Perishable foods such as dairy, meat, and prepared dishes should be evaluated carefully. When in doubt, discard items that have been held at unsafe temperatures for an extended period.
How much does it cost to repair a U-Line refrigerator showing the R Temp Hi 6H+ error?
Repair costs depend entirely on the root cause. Cleaning condenser coils is often a low-cost or no-cost fix you can do yourself. Replacing a door gasket typically runs in the range of $50 to $150 in parts depending on the model. Fan motor or defrost component replacements generally fall in the $100 to $350 range including labor. If the refrigerant system requires diagnosis and recharging, costs can rise to $200 to $600 or more depending on the extent of the issue and local labor rates.

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