U-Line Refrigerator R Temp Lo 6H+: Right Zone Too Cold
R Temp Lo 6H+ appears when the right zone of a U-Line refrigerator has run roughly ten degrees F beneath the setting for 6 hours or longer.
What does U-Line refrigerator & drawers code R Temp Lo 6H+ mean?
R Temp Lo 6H+ warns that the right side of a U-Line refrigerator is colder than you asked for. The control measured roughly ten degrees F under the set point across more than 6 hours, which is long enough to rule out a brief dip after loading. Unlike a warm warning, this one does not usually threaten food safety, but items may freeze, and wine, produce or drinks can be damaged. A changed setting is the simplest reason. A sensor reading off or an airflow part that stays open can also let the zone run colder than it should.
R Temp Lo 6H+ at a glance
- Code
- R Temp Lo 6H+
- Appliance
- U-Line refrigerator & drawers
- Applies to
- U-Line refrigerators showing a right zone on the display
- Type
- Low urgency
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- A set point that was lowered by accident or by someone else
What you may notice with R Temp Lo 6H+
- The display shows R Temp Lo 6H+
- Items on the right side feel icy or have started to freeze
- Condensation or frost builds up near the right zone vents
- The left zone may behave normally
How the refrigerator & drawers detects R Temp Lo 6H+
Each zone of a zoned U-Line refrigerator has a thermistor that reports to the main control. The control subtracts the reading from the set point and decides whether to send more cold air or less. Normally the zone settles within a degree or two of the target.
With R Temp Lo 6H+, the right zone ran colder than the set point by roughly ten degrees F for over 6 hours. A correction that large for that long tells the control something is overriding its normal cycling. It could be a sensor that misreports, a damper that does not close, or a set point that is not what you think. The message is a prompt to check, since the zone is not being controlled the way you intended.
Likely causes of R Temp Lo 6H+
- A set point that was lowered by accident or by someone else
- A thermistor that reports a temperature colder than the real one
- A damper stuck so cold air keeps flowing into the right zone
- A control that keeps calling for cooling after the zone is already cold
Can you keep using the refrigerator & drawers with R Temp Lo 6H+?
You can keep using the refrigerator while you check the set point, because a cold zone does not create a safety hazard. Watch for frozen produce, cracked bottles or sealed containers that bulge. Move delicate items to the left zone or a shelf away from the vents. If the display keeps showing R Temp Lo 6H+ after you confirm the setting, ask a technician to look at the sensor and damper before the zone damages more food.
What you can safely check
- Before touching anything inside, close the doors, and turn off power at the breaker if you plan to move shelves or clear vents.
- Check the right zone set point on the display and compare it with what you want.
- Look at items near the vents for ice crystals or frozen edges.
- Move food away from the air outlets.
- Restore power and watch the right zone for several hours. If R Temp Lo 6H+ shows again after the set point is right, call us.
What our technician does for R Temp Lo 6H+
- Check that the stored set point matches what is displayed
- Test the right-zone thermistor against a measured temperature
- Inspect the damper that meters cold air into the right zone
- Review the control's cooling demand for that zone
How to keep R Temp Lo 6H+ from coming back
- Check the zone set points after cleaning the display or letting others use the unit
- Keep delicate produce away from the vent where cold air enters the right zone
- Avoid pushing items against the back wall where cold air is released
Technical reference
- Code
- R Temp Lo 6H+
- Appliance
- U-Line refrigerator & drawers
- Control family
- U-Line refrigerators showing a right zone on the display
- Maker documentation
- U-Line owner manuals and support
- Checked
- November 2026
Code meanings come from the maker’s documentation and our own repair work; we do not reprint the maker’s document. Confirm the full model number before acting on a code. We are an independent repair company, not affiliated with U-Line Corporation.
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R Temp Lo 6H+ questions
Is R Temp Lo 6H+ dangerous?
No. It is a too-cold message rather than a safety alarm. The main risk is frozen or damaged food and drinks, so check what is stored near the vents in the right zone.
Could someone have changed the setting?
Yes, that is the first thing to rule out. A bump on the display or a different set point entered during cleaning can make the right zone run roughly ten degrees F colder than before.
Does R Temp Lo 6H+ mean the sensor is bad?
Not necessarily. A bad sensor is one possibility, but a stuck damper or a lowered set point produces the same reading. A technician can measure the real temperature to tell them apart.
Will R Temp Lo 6H+ go away on its own?
It may if the cause was a changed setting that you corrected, because the right zone will warm back to its target. If a sensor or damper is to blame, the message returns after the control sees the same cold reading.
How is this different from R Temp Hi 6H+?
They use the same timing but opposite directions. Lo means the zone sits roughly ten degrees F cooler than the setting, while Hi means it is that much warmer, so the checks and the risk to food differ.
Need help with R Temp Lo 6H+?
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