U-Line Beverage Center Code E4 Reports an Open Thermistor 4

What E4 means

On U-Line 1000 Series beverage centers like the 1215BEV and 2000 Series models like the 2224DWR, E4 reports Thermistor 4 open. The control is getting no reading from its fourth temperature sensor, so the circuit is broken somewhere between the sensor and the board. E4 stays on the display until the reading returns. E8 is the shorted version, and the display shows whichever condition the control finds.

Common causes of E4

Thermistor 4 has failed open
A broken wire or loose connector on the sensor lead
A control input that is not reading the sensor

✓ One safe check you can try

1. Turn off the power for one minute and switch it back on. 2. Make sure bottles are not pressed against the back wall. 3. Check the cabinet temperature with a thermometer. 4. Leave covers and wires untouched. 5. If E4 returns, call us.

! Why to stop there

A broken sensor path is hidden behind panels and cannot be seen from outside
Testing tells us whether the sensor, the wire or the board is the cause before anything is replaced
You receive the price first and a 30-day workmanship warranty after

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

E9 (Class Series)U-Line Class Series Code E9: Door 2 (Lower) Open ERU-Line Beverage Center Code ER: General Error, Record Code and Call 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

E4E4 questions

Is E4 a serious code?

E4 is a sensor-circuit code rather than a shutdown. The unit normally keeps cooling, but one temperature reading is missing, so the control is less accurate.

What pairs with E4?

E8 is the counterpart, reporting Thermistor 4 as shorted. E4 means the circuit is open, while E8 means it reads as a direct connection. Seeing the pair tells a technician which way the circuit failed.

Does E4 appear on every U-Line beverage center?

It appears on models that carry a fourth sensor in their error table, such as the 1000 and 2000 Series. Units with fewer sensors do not use every code.