U-Line Beverage Center Code E3, Sensor 3 Circuit Open

What E3 means

U-Line 1000 Series units such as the 1215BEV and 2000 Series units such as the 2224DWR show E3 when Thermistor 3 reads open. That means the control has lost the signal from its third temperature sensor. The display carries E3, and the control manages the cabinet with one fewer reading than it expects. Its shorted counterpart is E7. The code stays up until the signal returns.

Common causes of E3

Thermistor 3 has failed open
Its wire is broken or the connector is loose
The board input for that sensor is not responding

✓ One safe check you can try

1. Unplug the unit for a minute, then plug it back in. 2. Check that vents and the rear of the cabinet are clear. 3. Watch the interior temperature with a thermometer. 4. Do not open panels or tug on wires. 5. Call us if E3 returns.

! Why to stop there

An open sensor circuit can hide in three different places
Swapping parts without testing runs up the cost for no gain
We find the cause first, then quote the work in writing

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 Beverage Center codes

Door Alert SymbolU-Line Beverage Center Message "Door Alert Symbol": Door Left Open Past Five Minutes drU-Line Beverage Center Code dr: Door Open More Than 5 Minutes E0U-Line Beverage Center Code E0: Door 1 (Upper) Open E1U-Line Beverage Center Code E1 Means Thermistor 1 Is Open E2U-Line 1000 and 2000 Series Code E2 Reads Thermistor 2 as Open E2 (Class Series)U-Line Class Series Code E2: Second Sensor Open E4U-Line Beverage Center Code E4 Reports an Open Thermistor 4 E5U-Line 1000 and 2000 Series Code E5, Sensor 1 Shorted

E3E3 questions

What does E3 mean on a U-Line beverage center?

E3 means Thermistor 3 is open, so the control gets no signal from the third temperature sensor. It follows the same open-sensor pattern as E1, E2 and E4.

Older guides call E3 something else. Which is right?

For the 1000 Series 1215BEV and 2000 Series 2224DWR, E3 is Thermistor 3 open. Descriptions written for older Echelon-type units do not apply to these models.

How soon should I book a visit?

If the cabinet holds the right temperature, a visit within a few days is fine. If drinks are warming or the unit runs nonstop, call right away.