U-Line 1000/2000 Series Wine Cooler Code E3: Thermistor 3 Has an Open Circuit

What E3 means

A U-Line 1000 Series or 2000 Series wine cooler that displays E3 has an open Thermistor 3. The third temperature sensor does not complete its circuit, so the control cannot read it and shows E3. Older listings gave this code another meaning, but on these series it is a sensor reading. The shorted reading for the same sensor is E7.

Common causes of E3

Thermistor 3 is open
The sensor lead is pinched or broken
The connector has moisture

✓ One safe check you can try

1. Shut the cooler off, wait one minute and start it again. 2. Use a separate thermometer to confirm what the cabinet is doing. 3. Check the back of the cabinet for spills. 4. Leave covers on. 5. Call us if E3 returns.

! Why to stop there

Which wire or sensor is open is found only by testing
Replacing parts without a test wastes money
We give a written price first and cover the job for 30 days

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Wine Refrigerator codes

E6 (Class Series)U-Line Class Series Code E6 (UHWC524, 2224DWR): Thermistor 2 Short E7U-Line UHWC524 Code E7: Thermistor 3 Shorted Entry E9 (Class Series)U-Line 5 Class Wine Cooler Code E9: Door 2 (Lower) Open E6U-Line 1000/2000 Series Wine Cooler Code E6: Sensor 2 Reading Shorted Door Alert SymbolU-Line Wine Cooler Door Alert Symbol: Door Left Open Over 5 Minutes drU-Line Wine Cooler Code dr: Door Open More Than 5 Minutes E0U-Line 5 Class Wine Cooler Code E0: Door 1 (Upper) Open E1U-Line 1000/2000 Series Wine Cooler Code E1: Thermistor 1 Circuit Open

E3E3 questions

What sensor does E3 refer to?

The third temperature sensor circuit is incomplete, so Thermistor 3 reads open to the control.

Is E3 a door code?

No. Door readings on these coolers are E0 and E9. E3 belongs with the open sensor codes E1 to E4.

Which code covers a shorted Thermistor 3?

E7 reports Thermistor 3 shorted. The pair E3 and E7 tells us whether the circuit is open or shorted.