U-Line Ice Machine Code E8: Fourth Sensor Shorted

What E8 means

U-Line ice machines such as the UONB115 and UHNP315 display E8 when Thermistor 4 reads shorted. The fourth temperature sensor appears to the control as a direct short, so the reading is invalid. E8 is absent from the clear ice UCLR1215 table. The display shows E8 and the ice cycle slows. The matching open reading for this sensor is E4, so a technician reads the pair together.

Common causes of E8

Thermistor 4 has shorted
The sensor lead is damaged
Moisture at the sensor connector

✓ One safe check you can try

1. Turn the machine off for one minute, then turn it on. 2. Check the area around the cabinet for water. 3. Make sure the bin door is shut. 4. Do not open panels. 5. Call us the moment E8 shows up again.

! Why to stop there

Short circuits cannot be judged by eye
Testing tells us whether the sensor or the board needs work
The price is quoted 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 P1U-Line Nugget Ice Maker Code P1: Pump Circuit Open PiU-Line 1000 Series Clear Ice Code Pi: Pump Circuit Open

E8E8 questions

What does E8 mean?

E8 is Thermistor 4 shorted. It pairs with E4, which reports the same sensor open, and both leave the control without its fourth temperature reading.

Does the UCLR1215 show E8?

No. E3, E4, E7 and E8 do not apply to the clear ice UCLR1215, so a clear ice machine with a thermistor code is reporting one of the lower numbers.

Can I clear E8 myself?

A restart is safe to try. If E8 returns, the sensor circuit needs testing by us, because the cause sits in the sensor, its wire or its connector.