U-Line Echelon 2000 Code E1: Open Thermistor 1 Explained
The E1 code on a U-Line Echelon 2000 refrigerator points to thermistor 1, the main temperature sensor, being open. The control has no good cabinet reading, so it cannot regulate temperature properly.
What does U-Line refrigerator & drawers code E1 mean?
On the Echelon 2000 line, models with the 2010 electronic control (the 2175RF and the 2275ZWC are examples) put E1 on the display when thermistor 1 reads as an open circuit. That sensor is the main source of the cabinet temperature. A break in its circuit leaves the control without a trustworthy reading to regulate from. The CLR2160 does not use this code.
E1 at a glance
- Code
- E1
- Appliance
- U-Line refrigerator & drawers
- Applies to
- Echelon 2000 with the 2010 electronic control
- Type
- Needs attention soon
- Can you clear it yourself?
- Sometimes, after the safe checks below
- Most likely cause
- An internal break inside thermistor 1
What you may notice with E1
- E1 appears on the display of the refrigerator
- The usual set point readout is replaced by the code
- Cabinet temperature drifts because no good sensor signal reaches the control
How the refrigerator & drawers detects E1
The 2010 control depends on thermistor 1 to know how cold the cabinet is. A thermistor changes its resistance as temperature changes, and the control converts that resistance into a reading. When the circuit is open, no current passes and the control sees a reading that no cabinet could produce. It recognizes that as a broken sensor path rather than an extremely cold or warm cabinet and puts E1 on the display. From that point it has nothing reliable to compare against the set point. The break can sit inside the thermistor, at its plug or in the lead running to the control. A meter test separates those cases, which is why guessing at the part does not help.
Likely causes of E1
- An internal break inside thermistor 1
- A sensor plug that has loosened or a lead that has snapped
- A gap in the circuit between the sensor and the control
Can you keep using the refrigerator & drawers with E1?
You can use it briefly, but do not trust the display. With E1 showing, the control cannot regulate the cabinet from a good sensor signal, so food temperature may drift. Put a refrigerator thermometer on a shelf and check it several times a day. If the shelf feels or reads warm, move perishables to another cooler. Avoid opening panels or probing wiring while you wait for the repair.
What you can safely check
- Note exactly what the display says, then unplug the refrigerator for one minute.
- Restore power and keep an eye on the display.
- Move away anything pushed against the cabinet sides or leaning on the cord.
- If E1 returns, stop there and phone us. Do not open panels or probe wiring.
What our technician does for E1
- Test thermistor 1 and its plug with a meter
- Confirm where the circuit is open
- Replace the part that is open
- Compare the display with the set point afterward
How to keep E1 from coming back
- Keep the cord and the area behind the refrigerator free of anything that could pinch sensor wiring.
- Move the refrigerator gently when cleaning so plugs near the control stay seated.
Technical reference
- Code
- E1
- Appliance
- U-Line refrigerator & drawers
- Control family
- Echelon 2000 with the 2010 electronic control
- 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
Has the refrigerator quit cooling when E1 appears?
Not necessarily, but the control cannot hold temperature accurately without a good sensor signal. Use a separate thermometer to watch the cabinet until the repair is finished.
Will unplugging it clear E1?
A short power-off can clear a one-time glitch. An open sensor circuit brings E1 straight back, and then the circuit itself needs testing.
How is E1 repaired on this line?
The technician measures the sensor circuit, finds the open spot and replaces that part. Last, the display is compared with the set point. The price is given in writing first, with a 30-day warranty on the work.
Is E1 the same as E2?
They are close relatives. E1 means thermistor 1 is open, while E2 means thermistor 1 is shorted. Both point at the same sensor, but the failure differs, so each is confirmed with a meter before a part is replaced.
Why is the CLR2160 left out?
The CLR2160 does not use the E1 code, so it will not show it. On the models that do, such as the 2175RF and 2275ZWC, E1 always refers to thermistor 1.
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.