U-Line Wine Cooler E6: Thermistor 2 Short Explained
E6 on a 1000 or 2000 Series U-Line wine cooler means Thermistor 2, the second temperature sensor, reports a short, and the control cannot rely on it. E2 is the open reading of that sensor.
What does U-Line wine refrigerator code E6 mean?
The second temperature sensor, Thermistor 2, is shorted whenever E6 appears on a 1000 or 2000 Series U-Line wine cooler. The control sees its circuit as a short and cannot depend on the reading. Older listings gave E6 another meaning, yet on these series it describes a sensor. The open reading for the same sensor is E2.
E6 at a glance
- Code
- E6
- Appliance
- U-Line wine refrigerator
- Applies to
- U-Line 2000 and 1000 Series wine coolers
- Type
- Needs attention soon
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- Thermistor 2 has shorted inside
What you may notice with E6
- E6 is on the display of the cooler
- The cabinet temperature may stray from the setting
- The doors and gaskets seem to be in order
How the wine refrigerator detects E6
Thermistor 2 reports temperature as a resistance that changes with heat, and the control reads that as a signal within an expected span. The second sensor has its own circuit back to the control.
When that circuit shorts, the signal collapses toward an extreme value that no real cabinet temperature would produce. The control spots this and puts E6 on the display instead of trusting the number. The short can start in the sensor, in a lead whose conductors touch or at a connector bridged by corrosion. The display cannot tell these apart. On the 1000 Series and 2000 Series the code is tied to Thermistor 2, though older listings used it for something else. Its open counterpart is E2.
Likely causes of E6
- Thermistor 2 has shorted inside
- The sensor lead is pinched and its conductors touch
- The connector is corroded and bridges its contacts
Can you keep using the wine refrigerator with E6?
You may use it briefly, with a thermometer inside as your guide. With the second sensor reading as a short, the control cannot depend on it, and that zone may not stay at the set temperature. Look at the thermometer often. If the temperature moves up, take the wine to a cooler spot and leave the cooler off until it has been checked.
What you can safely check
- Remove power at the plug for a minute, then plug the cooler in again.
- Compare what the cooler shows with a thermometer you set inside.
- Wipe away any moisture behind the cooler.
- Keep covers on.
- If E6 returns, call us.
What our technician does for E6
- Test Thermistor 2 and its circuit for a short
- Separate the sensor from the wiring and check each one
- Replace the part that fails and confirm E6 does not return
How to keep E6 from coming back
- Keep moisture away from the rear of the cooler and its wiring.
- Do not stack boxes or tools against the back of the cabinet.
- Handle the cooler gently during cleaning so the sensor lead is not squeezed.
Technical reference
- Code
- E6
- Appliance
- U-Line wine refrigerator
- Control family
- U-Line 2000 and 1000 Series wine coolers
- 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 wine refrigerator error codes
E6 questions
What is the meaning of E6 on my cooler?
Thermistor 2, the second temperature sensor, has a shorted circuit, and the control cannot use what the sensor sends.
How are E2 and E6 related?
Both describe Thermistor 2. E2 means its circuit is open and E6 means it is shorted, so each one tells a technician which condition Thermistor 2 is in.
Can I run the cooler while E6 shows?
Put a thermometer inside and watch it. A steady number gives you time to get the cooler looked at. A rising number means the wine should go somewhere colder.
Could a damp room cause E6?
Moisture can bridge the contacts of a connector and make a circuit read as a short. That is one reason to keep the back of the cooler dry, though only testing shows the real source.
Does E6 mean the same on other brands of cooler?
No. Codes differ between platforms, and older listings gave E6 another meaning. For 1000 and 2000 Series U-Line coolers it means Thermistor 2 shorted, so match the code to your series.
Need help with E6?
A technician finds the cause at your bar or lanai and puts the price in writing before any part comes out.