U-Line Nugget Ice Machine Code E7: Third Sensor Shorted

What E7 means

On U-Line ice machines such as the UONB115 and UHNP315, E7 means Thermistor 3 is shorted. The control reads the third temperature sensor as a direct short, so the value is not a real temperature. The UCLR1215 clear ice machine does not use E7. The display shows E7 and ice production drops. The matching open reading for this sensor is E3, so a technician reads the pair together.

Common causes of E7

Thermistor 3 has shorted
A damaged or pinched sensor lead
Corrosion or dampness at the sensor plug

✓ One safe check you can try

1. Switch the machine off, wait a minute and restart it. 2. Check for moisture around the cabinet. 3. Confirm the bin door is closed. 4. Do not remove panels. 5. When E7 returns, we test the circuit, so call us. 6. Keep boxes away from the cabinet so air can circulate.

! Why to stop there

A shorted circuit needs meter testing to locate
Different causes require different parts
We quote first and back the repair 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 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 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 E6U-Line Ice Machine Code E6 Reads Sensor 2 as Shorted E8U-Line Ice Machine Code E8: Fourth Sensor Shorted

E7E7 questions

Which machines show E7?

U-Line ice machines such as the UONB115 and UHNP315 use E7. The clear ice UCLR1215 does not, because it carries fewer sensors in its table.

What does E7 mean?

E7 is Thermistor 3 shorted, the counterpart to E3, which reports the same sensor open. Either way the third temperature reading is lost to the control.

Is E7 urgent?

It is not a safety issue. If ice output falls or stops, book a visit soon so the sensor circuit can be tested and the machine can return to normal output.