U-Line 1000 and 2000 Series E2: Thermistor 2 Open
E2 on U-Line 1000 and 2000 Series beverage centers means no signal arrives from Thermistor 2, the second temperature sensor. The cabinet runs on, but temperature control is less precise.
What does U-Line beverage center code E2 mean?
The 1215BEV in the 1000 Series and the 2224DWR in the 2000 Series both display E2 for an open Thermistor 2. No signal reaches the control from that second temperature sensor, so the circuit is broken somewhere between sensor and board. The unit continues without that reading while E2 stays on the display. Until the circuit is repaired, temperature control is looser than normal. Class Series cabinets use the same meaning, and the shorted version for this sensor appears as E6.
E2 at a glance
- Code
- E2
- Appliance
- U-Line beverage center
- Applies to
- U-Line 1000 and 2000 Series beverage centers
- Type
- Needs attention soon
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- The Thermistor 2 sensor has failed open
What you may notice with E2
- E2 shows on the display and does not go away
- Cabinet temperature drifts slightly from the setting
- The unit still runs and the light stays on
- The temperature shown differs from a thermometer inside
How the beverage center detects E2
A U-Line beverage center reads several thermistors, which are small sensors whose resistance shifts as the air warms or cools. Each one feeds its own input on the control board, and the board combines the values to decide when cooling should run and for how long.
Thermistor 2 is the second of them. When its circuit is broken, the board sees no signal whatsoever, which is the open condition. An open circuit cannot represent a real temperature, so the control flags it with E2. The cabinet generally carries on using the readings it still has, though it is working with less information than designed. That is why the unit may hold its temperature a bit less tightly while the code is displayed.
Likely causes of E2
- The Thermistor 2 sensor has failed open
- The sensor lead has broken or its connector has worked loose
- The control input for this sensor is not reading it
Can you keep using the beverage center with E2?
With E2 showing, the cabinet normally keeps cooling, but the control is missing a reading and may hold the setting less closely. Place a separate thermometer inside and watch it over a day. If the temperature climbs and drinks start to warm, or ice forms where it should not, switch the unit off at the breaker and arrange a repair. Do not open panels or touch wiring to hunt for the cause.
What you can safely check
- Turn the cabinet off and disconnect power at the outlet or the breaker before you inspect anything.
- After a minute, power it up again.
- Move bottles away from the rear wall to restore airflow.
- Place a kitchen thermometer inside and compare it with the display.
- Leave panels and wiring alone.
- If E2 shows up again, contact us for testing.
What our technician does for E2
- Measure Thermistor 2 to confirm whether the sensor is open
- Check the lead and connector for a break or loose contact
- Test the control input if the sensor and wiring both test good
How to keep E2 from coming back
- Leave a gap between the bottles and the rear wall so airflow around the sensors stays steady.
- Do not twist or drag the cabinet when cleaning behind it, since pulling can loosen a sensor lead.
- Keep spills and condensation from running down to the connectors at the back.
Technical reference
- Code
- E2
- Appliance
- U-Line beverage center
- Control family
- U-Line 1000 and 2000 Series beverage centers
- 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 beverage center error codes
E2 questions
What exactly is Thermistor 2?
The second of the temperature sensors that the control monitors. Open means nothing comes back from it, and its shorted counterpart is E6.
Does E2 read the same across the 1000 and 2000 Series?
Yes. On the 1215BEV and the 2224DWR, E2 stands for Thermistor 2 open, and Class Series cabinets share that meaning, so you can rely on it across these lines.
May I keep the cabinet running with E2 showing?
It keeps cooling, with one reading missing. Follow the readings over a day. Should drinks warm or frost build up inside, shut the unit off at the breaker and get it looked at.
Are E2 and E6 the same problem?
They cover one sensor in opposite ways. E2 means Thermistor 2 reads open, with no signal, and E6 means it reads shorted. Which one you see tells a technician how the circuit failed.
Does E2 clear without a repair?
A restart can clear a one-time reading glitch. If the sensor path is actually broken, E2 returns after a short while, and the sensor, its wire and the board input must be tested.
Need help with E2?
A technician finds the cause at your bar or lanai and puts the price in writing before any part comes out.