U-Line Refrigerator L Evap T Open: Left Evaporator Sensor Open
L Evap T Open tells you the control cannot read the left evaporator thermistor because its circuit is open, so cooling on that side loses its coil temperature reading.
What does U-Line refrigerator & drawers code L Evap T Open mean?
L Evap T Open is a left-side message from a U-Line refrigerator whose zones are controlled separately. The L means the left side. The left evaporator thermistor measures the temperature of the cold coil that serves that side, and when the circuit to it is open the control gets nothing usable. It reports the open circuit rather than guess. The right side is not named, so the right-hand sensor is not what the control is complaining about.
L Evap T Open at a glance
- Code
- L Evap T Open
- Appliance
- U-Line refrigerator & drawers
- Applies to
- U-Line digital control, left coil sensor
- Type
- Needs attention soon
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- A loose or partly unplugged connector at the left evaporator thermistor
What you may notice with L Evap T Open
- L Evap T Open appears on the display
- The left compartment feels warmer than the right
- Frost may gather on the left rear wall
- The message returns after you restart the unit
How the refrigerator & drawers detects L Evap T Open
This U-Line refrigerator manages its left and right sides separately, and each side has its own evaporator thermistor at the cold coil. The left sensor tells the control how cold the left coil is, and the control uses that value to time cooling and defrost for the left side only.
An open circuit means the left sensor wire path is broken, so the control measures no current. No real coil temperature looks like that. The control treats it as a sensor or wiring problem and shows L Evap T Open. Without a left coil reading it cannot manage that side well, while the right side keeps its own sensor and may behave normally.
Likely causes of L Evap T Open
- A loose or partly unplugged connector at the left evaporator thermistor
- A left evaporator thermistor that has failed and no longer passes current
- A damaged or broken wire on the left sensor run
Can you keep using the refrigerator & drawers with L Evap T Open?
The unit is not dangerous to have on, since this is a sensor problem. Still, the left side may not cool correctly, so check it with a thermometer and move delicate food to the right side or another cold place if it warms. If the left interior climbs or ice builds up, switch the unit off and arrange service.
What you can safely check
- Unplug the refrigerator or switch off its breaker before any check, so the left side sensor circuit is not live.
- Wait a minute, restore power and see whether L Evap T Open appears again.
- Note whether only the left compartment feels warmer than the right.
- Place a refrigerator thermometer on each side and compare the readings.
- Do not remove panels. If it keeps coming back, call us.
What our technician does for L Evap T Open
- Test the left evaporator thermistor circuit for an open
- Reseat the connector and trace the left-side wire run
- Fit a new left evaporator thermistor when its value is outside range
- Check that the control reads the left coil normally afterward
How to keep L Evap T Open from coming back
- Keep stored items from pressing against the left rear wall so the sensor wire is not squeezed.
- Unplug the unit before moving it for cleaning, because dragged cords can pull connectors loose.
Technical reference
- Code
- L Evap T Open
- Appliance
- U-Line refrigerator & drawers
- Control family
- U-Line digital control, left coil sensor
- 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.
Related U-Line refrigerator & drawers error codes
L Evap T Open questions
What does the L in L Evap T Open mean?
The L stands for the left side. The control is reporting an open circuit at the left evaporator thermistor, not the right one, so the repair focuses on the left sensor and its wiring.
Does L Evap T Open affect the right side?
Not directly, since the right side has its own sensor. If the left side warms, you might still notice some effect on the whole unit, so check both sides with a thermometer.
Can L Evap T Open clear if I restart the unit?
A restart may clear a one-time glitch. If a connector or wire is damaged, the message returns soon after, and the circuit needs to be tested.
Why do the left and right coil sensors get separate codes?
Each side has its own coil thermistor, so a problem on the left is reported by its own code. The repair steps are alike, but the work is done on the sensor and wire run of the side named.
What should I say about L Evap T Open when calling?
Tell us the exact display text, whether only the left side feels warm, and whether the message returned after a restart. That helps us bring the right test gear for the left sensor.
Need help with L Evap T Open?
A technician finds the cause at your bar or lanai and puts the price in writing before any part comes out.