U-Line Ice Machine Code E5 Shows a Shorted Thermistor 1

What E5 means

On U-Line ice machines such as the UONB115, UHNP315 and UCLR1215, E5 reports Thermistor 1 shorted. The first temperature sensor is delivering a signal the control reads as a direct short, so the value cannot be real. E5 appears on the display and ice production drops until the circuit is repaired. The matching open reading for this sensor is E1, and the display tells us which condition the control found.

Common causes of E5

Thermistor 1 has shorted internally
A sensor wire is pinched or damaged
Dampness or corrosion on the sensor plug

✓ One safe check you can try

1. Switch off the machine, wait one minute and turn it on again. 2. Check for water pooling near the cabinet. 3. Make sure the bin door is shut. 4. Do not open panels. 5. Call us if E5 returns.

! Why to stop there

A short is found by testing, not by sight
The sensor, the wire and the connector each call for a different fix
Pricing is given first and the work is warranted 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.

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Other Ice Machine codes

Ice / Off scrolling with SPU-Line Echelon 2000 Message "Ice / Off scrolling with SP": ice maker off mode CLU-Line Echelon 2000 Message "CL": self-cleaning cycle running CLR2060 one flashU-Line CLR2060 One flash: overflow protection circuit open CLR2060 two flashesU-Line CLR2060 Two flashes: open thermistor or too warm CLRCO2075 LED 2 flashingU-Line CLRCO2075 LED 2 flashing: open thermistor CLRCO2075 LED 3 flashingU-Line CLRCO2075 LED 3 flashing: drain pump blocked or overloaded E10U-Line Nugget Ice Machine Code 10: Door 2 Open E11U-Line Nugget Ice Machine Code 11: Reservoir Water Level High

E5E5 questions

What does E5 mean?

On E5 the first sensor is shorted, and the control reads the first sensor as a direct connection and cannot use the value for the ice cycle. A technician tests the circuit to find the short.

How does E5 differ from E1?

E1 is the same sensor reading open. E5 is the shorted reading, so the circuit failed in the opposite way, though both lead to the same sensor check.

Can moisture cause E5?

Dampness at a sensor connector produces a shorted reading, which is one reason we check the connector and the wire before replacing the sensor itself.