U-Line Refrigerator Error Code Evap T Open

Evap T Open means the control board is detecting an open circuit in the evaporator thermistor loop. The evaporator thermistor measures the temperature of the cooling coil and sends that data to the main board. When the circuit is open, the board receives no valid signal and displays this fault. The issue can be a corroded connector, a loose plug, or a failed thermistor.

A power reset may temporarily clear the displayed code, but it will return if the underlying open circuit has not been corrected. The control board checks the thermistor circuit continuously, so a reset is not a fix. The fault must be resolved by repairing the connection or replacing the thermistor.

If the fix is simply cleaning a corroded connector and reseating it, there may be no parts cost at all. If the thermistor needs replacement, the part itself typically falls in the range of $20 to $60 depending on the model. Adding professional labor, a service call to diagnose and replace the thermistor generally runs in the range of $100 to $250 total, though pricing varies by region and service provider.

In many cases, yes. Start by unplugging the refrigerator and inspecting both the connector at the thermistor lead and the connector at the main control board for corrosion or moisture. Clean any corroded contacts and reseat any loose connectors. If the code returns after restoring power, the thermistor itself will need to be replaced, which is a straightforward part swap for someone comfortable working with appliance wiring.

Operating the unit with this fault active is not recommended for extended periods. Without a valid evaporator temperature reading, the control board cannot properly manage the cooling cycle, which may result in inadequate cooling or uncontrolled compressor operation. Food safety could be at risk if temperatures are not being maintained correctly.