U-Line Ice Maker Error Code E8

The E8 code means the control board has detected a short circuit condition in Thermistor 4, which is the ice maker thermistor. This thermistor monitors temperature within the ice making system, and a short causes it to send an invalid signal to the board. The unit will not operate normally until the fault is diagnosed and resolved. The first step is to inspect the thermistor connections and perform an OHM test on the thermistor itself.

It is not recommended to continue operating the ice maker while E8 is active. Without a functioning thermistor, the control board cannot accurately monitor temperatures, which can lead to improper freeze cycles, potential over-freezing, or component damage over time. Addressing the fault promptly will protect the unit from further issues.

Repair costs vary depending on the root cause. A replacement thermistor is generally an inexpensive part, with component costs typically ranging from $15 to $60 depending on the specific model. If a technician is needed for diagnosis and installation, labor costs can bring the total to somewhere between $100 and $250 or more. Control board replacement, if required, would be on the higher end of the cost range.

A knowledgeable DIYer can perform the initial diagnostic steps, including inspecting the wiring harness, checking connectors for moisture or corrosion, and using a multimeter to OHM test the thermistor. If the thermistor tests as shorted, replacing it is a straightforward repair for someone comfortable with appliance work. However, if the wiring or control board is involved, a qualified technician may be needed to complete the repair safely.

A reset may temporarily clear the E8 code, but the error will return if the underlying fault in the thermistor or its wiring has not been corrected. The control board will re-detect the shorted thermistor signal as soon as it resumes monitoring. A permanent fix requires repairing or replacing the faulty component rather than relying on a reset.