U-Line Refrigerator Error Code E8

E8 indicates that Thermistor 3 has been detected as either open or shorted by the control board. This means the temperature sensor is either not completing a circuit or is sending an out-of-range resistance reading. The refrigerator cannot accurately monitor the temperature zone associated with this sensor until the fault is resolved. Note that this code does not apply to RS, WC, or CLR2160 model lines.

A reset may temporarily clear the E8 code from the display, but if the underlying fault with Thermistor 3 has not been corrected, the error will return. The control board will continue to detect the open or shorted condition each time it reads the sensor. A lasting fix requires repairing or replacing the faulty thermistor or wiring.

If the repair only requires a thermistor replacement, parts typically range from around $20 to $60 depending on the specific sensor, with professional labor adding $75 to $150 or more depending on your location. If the wiring harness or control board also needs attention, total repair costs can increase to the $150 to $400 range. Getting a diagnostic assessment from a qualified technician before ordering parts is a good way to avoid unnecessary expense.

Start by accessing the diagnostic menu and checking the thermistor status at positions 2, 19, 20, or 21 to confirm the fault. Inspect the wiring and connector leading to Thermistor 3 for any visible damage, corrosion, or loose connections. If the error persists after those checks, replacing Thermistor 3 is the recommended repair. In rare cases where a new thermistor does not clear the code, the control board may need evaluation.

An E8 fault means the refrigerator may not be accurately tracking temperatures in the zone monitored by Thermistor 3. If that zone contains perishable food or beverages, there is a risk that temperatures could drift outside safe storage ranges without triggering a proper response from the control board. It is advisable to monitor the unit closely and address the repair promptly.