Electrolux Dryer Error Code E71

The E71 error code on an Electrolux dryer indicates a Drying NTC1 alarm, meaning the temperature sensor designated NTC1 is producing a reading that falls outside the acceptable range for normal dryer operation. NTC stands for Negative Temperature Coefficient, referring to a thermistor whose electrical resistance decreases as temperature increases. The main control board continuously monitors the resistance signal from NTC1 to track drum or airflow temperatures during the drying cycle. When that signal deviates beyond expected parameters, the board flags E71 and may halt the cycle to prevent unsafe operating conditions.

There are three primary failure points the error code points to. First, the wiring harness connecting NTC1 to the control board may have a break, short, or loose connector terminal, which disrupts the resistance signal entirely or causes erratic readings. Second, the NTC1 sensor itself may have failed internally, producing resistance values that no longer correspond to actual temperatures. Third, the NTC reading circuit on the main control board may have failed, meaning the board cannot correctly interpret even a good signal from an otherwise functional sensor.

Diagnosis should begin with a thorough inspection of the NTC1 wiring harness, checking for pinched wires, burned insulation, corroded terminals, or disconnected plugs. If the wiring checks out, the NTC1 sensor resistance should be measured with a multimeter and compared against expected values at a known temperature. If both the wiring and sensor test good, attention shifts to the NTC reading circuit on the main board, which is the least common but most costly failure point.