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Error code reference

Electrolux Dryer Error Code 71

NTC1 open error

Electrolux codesElectrolux dryer codes

NTC1 open error — NTC open or disconnected.

First step from the service manual

Check NTC1 connection; if wiring is good, suspect main board fault.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 71 means on a Electrolux dryer

Error code 71 on an Electrolux dryer indicates an NTC1 open circuit fault. NTC stands for Negative Temperature Coefficient, referring to a thermistor sensor that monitors temperature within the dryer's heating system. When the control board detects an open circuit condition on the NTC1 sensor input, meaning it reads no signal or an out-of-range resistance value, it triggers error 71 to prevent unsafe operation. A functioning NTC thermistor changes resistance predictably as temperature rises or falls, and an open circuit reading means the board is receiving no usable data from that sensor.

The most common cause of this error is a broken or disconnected wiring harness between the NTC1 sensor and the main control board. Vibration during normal dryer operation can loosen connector pins or cause wire breaks, particularly near stress points along the harness routing. The thermistor itself can also fail internally, producing an open circuit even when its wiring appears intact. In these cases, the sensor will measure infinite or extremely high resistance rather than the expected value for ambient or operating temperature.

If the wiring and connector are confirmed to be in good condition and properly seated, the fault may lie with the main control board itself. A damaged input circuit on the board can misinterpret a functioning sensor as open. Diagnosis should begin at the NTC1 connector, checking for secure seating and visible wire damage, before moving on to resistance testing of the thermistor and ultimately evaluating the board.

Source: manufacturer service documentation.

Common causes of 71

  1. 01

    Disconnected or loose NTC1 connector

    Wiring / connection

    The wiring harness connector to the NTC1 thermistor may have vibrated loose or become unseated. Inspect the connector at both the sensor end and the control board end for secure engagement.

  2. 02

    Broken wire in the NTC1 harness

    Part replacement

    A wire in the harness leading to the NTC1 sensor may be broken internally or at a chafe point, causing an open circuit. Visually inspect the full length of the harness and flex each wire segment to locate any break.

  3. 03

    Failed NTC1 thermistor

    Part replacement

    The thermistor itself can fail open internally, producing infinite resistance even when wiring is intact. Testing the sensor with a multimeter across its terminals will confirm if it is reading open rather than its expected resistance value.

  4. 04

    Corroded or damaged connector pins

    Part replacement

    Corrosion or bent pins at the NTC1 connector can interrupt the circuit even when the connector appears seated. Inspect the pins closely and clean or replace the connector if corrosion is present.

  5. 05

    Main control board fault

    Part replacement

    If wiring and the NTC1 sensor both test correctly, the input circuit on the main control board may be damaged and unable to read the sensor signal. Board replacement is the solution when all other components check out.

See the test procedure for each cause

Frequently asked questions about 71

What does 71 mean on a Electrolux dryer?
Error code 71 on an Electrolux dryer signals an NTC1 open circuit fault. The control board cannot detect a valid signal from the NTC1 temperature sensor, either because the sensor is disconnected, the wiring is broken, or the sensor has failed internally. The dryer stops operating to prevent running without temperature monitoring. In some cases, a faulty main control board can also produce this code.
Can I fix error 71 on my Electrolux dryer myself?
Yes, in many cases. Start by unplugging the dryer and checking the NTC1 sensor wiring harness and connector for any loose, disconnected, or visibly damaged wires. If the connections look good, a technician or experienced DIYer can test the thermistor resistance with a multimeter to determine if the sensor itself has failed. Board-level repairs are more complex and typically require professional service.
Is it safe to run my Electrolux dryer with error code 71?
No, you should not operate the dryer while error 71 is active. The NTC1 sensor provides temperature feedback that the control board uses to regulate heat. Running the dryer without this data could allow the heating element to overheat, creating a potential fire hazard. Resolve the fault before resuming use.
Will resetting my Electrolux dryer clear error code 71?
A reset may temporarily clear the display, but error 71 will return immediately if the underlying fault is still present. Because the code reflects an actual open circuit condition in the NTC1 sensor circuit, the physical problem must be identified and repaired before the error will stay cleared. A reset alone is not a fix.
How much does it cost to repair error code 71 on an Electrolux dryer?
Repair costs vary depending on which component is at fault. If only a connector or wire needs attention, costs may be minimal. A replacement NTC thermistor sensor typically runs in the range of $15 to $50 for the part. If the main control board is the cause, board replacement parts can range from $100 to $300 or more, with additional labor costs if a technician performs the repair.

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