U-Line Refrigerator Error Code R Zone T Short

R Zone T Short means the thermistor circuit for the right refrigeration zone has shorted. The thermistor is the temperature sensor the control board uses to monitor and regulate cooling in that zone. When the circuit shorts, the resistance reading drops abnormally low, the control board receives invalid data, and it triggers this fault code. The refrigerator may not cool the right zone properly until the issue is resolved.

It is not advisable to rely on the refrigerator for food storage while this error is active. With a shorted thermistor, the control board cannot accurately read the right zone temperature, which means cooling may be inconsistent or absent in that zone. Perishable food stored in the affected zone is at risk. Address the fault as soon as possible to ensure safe operating temperatures are maintained.

Repair costs depend on which component has failed. A replacement thermistor sensor is typically an affordable part, with the component itself ranging from around $15 to $50 depending on the specific model. If a service technician is needed for diagnosis and replacement, labor costs will add to the total, typically bringing the full repair into the $100 to $250 range. A control board replacement, if required, will cost significantly more.

Start by inspecting the thermistor cable for any pinch points, cuts, or areas where insulation has worn away, and replace the cable if damage is found. If the cable looks intact, use a multimeter to check the resistance of the thermistor itself: a reading near zero ohms indicates an internal short and the thermistor needs to be replaced. Also check the connector at the control board for moisture, corrosion, or loose pins. If the sensor and wiring both test correctly, the control board may need to be evaluated.

A power reset may temporarily clear the error code from the display, but the fault will return if the underlying problem with the thermistor circuit has not been corrected. The short circuit condition must be physically resolved by repairing or replacing the damaged cable or thermistor before the error will stay cleared. Do not rely on a reset as a fix.