U-Line Origins 1000 Error E1: Open Cabinet Thermistor
Error E1 on a U-Line Origins 1000 refrigerator points to an open cabinet thermistor. The control cannot get a temperature reading because the sensor circuit is broken.
What does U-Line refrigerator & drawers code E1 mean?
Origins 1000 refrigerators (1115R, 1175R and 1175BEV among them) display E1 when the thermistor circuit is open. Through a broken circuit, the control gets no good picture of the cabinet at all. Origins models carry a single thermistor, so there is no sensor number to tell apart. Echelon 2000 controls use the same label for thermistor 1 specifically.
E1 at a glance
- Code
- E1
- Appliance
- U-Line refrigerator & drawers
- Applies to
- Origins 1000 refrigerators
- Type
- Needs attention soon
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- A cabinet thermistor with an internal break
What you may notice with E1
- E1 shows on the refrigerator display
- The cabinet temperature is not being read
- Cabinet temperature may drift while the code stays up
How the refrigerator & drawers detects E1
An Origins 1000 refrigerator keeps track of its cabinet through one thermistor. The control sends a small signal through that sensor and measures what comes back. If the circuit is open, nothing comes back, and the control concludes that the sensor path is broken instead of guessing at a temperature. It then shows E1 so the problem is visible. While E1 is up, the control has no good reading of the cabinet to compare with the set point, so it is not regulating from solid information. The break may be inside the thermistor, at its plug or in the lead to the control board. Only a meter test tells which, so a part swapped on a hunch can leave the real break in place.
Likely causes of E1
- A cabinet thermistor with an internal break
- A sensor plug that has pulled loose
- A lead between the sensor and the control that is damaged
Can you keep using the refrigerator & drawers with E1?
You can keep the refrigerator running for the moment, but treat the display with caution. The control is working without a good temperature reading, so the cabinet could run warmer or colder than it should. Keep the door closed, put a separate thermometer inside and check it regularly. If it climbs above 41 F, move perishables to another cooler and hold off on loading new food.
What you can safely check
- Jot down the code and the model number, then unplug the refrigerator for a minute and plug it back in.
- Keep the door closed and check that the gasket seals.
- Use a separate thermometer to follow the cabinet temperature.
- If E1 returns, phone us and keep watching the thermometer.
What our technician does for E1
- Test the thermistor and its plug with a meter
- Replace the sensor or the lead where the circuit is open
- Confirm the display returns to normal
How to keep E1 from coming back
- Keep the door seal clean and the door properly closed so the cabinet is not fighting extra warm air.
- Avoid pulling on the cord or sliding the refrigerator roughly, which can loosen plugs near the control.
Technical reference
- Code
- E1
- Appliance
- U-Line refrigerator & drawers
- Control family
- Origins 1000 refrigerators
- 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.
U-Line models that can show E1
Models named for this code in U-Line documentation that have a page here. Check the full model number on the rating label before you act on a code.
Related U-Line refrigerator & drawers error codes
E1 questions
Why does an Origins 1000 show E1 at all?
The thermistor in the cabinet is reading open, so the control has no temperature to display. The code stands in for the reading. Origins models have just the one sensor, so there is no number attached.
Will a power reset fix it?
A reset clears a one-time glitch only. If the circuit is truly open, E1 returns and the sensor or plug needs testing. Keep the door shut in the meantime.
Is the food safe while E1 shows?
Check with a separate thermometer. When it reads above 41 F, move perishables to another cooler. The sensor repair comes with a written price and a 30-day warranty.
Is E1 on an Origins 1000 the same as E1 on an Echelon 2000?
The label matches, but the sensor does not. Echelon 2000 controls name thermistor 1 in the code, while Origins 1000 models have a single thermistor. The nature of the problem, an open circuit, is the same.
What should I mention about E1 when I phone?
Give the model, such as the 1115R or 1175BEV, and say whether E1 returns after a one-minute restart. A note of the cabinet thermometer reading helps us judge how soon the sensor needs attention.
Need help with E1?
A technician finds the cause at your bar or lanai and puts the price in writing before any part comes out.