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Error code reference

Indesit Washer Error Code F13

NTC dryer sensor open or short circuit.

Indesit codesIndesit washer codes

NTC dryer sensor open or short circuit.

First step from the service manual

Check efficiency of contacts on connector J011 (commutator) or J14 (three-phase); check NTC impedance between pins 1 and 2, should be approximately 20 KOhm at 20°C.

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

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What F13 means on a Indesit washer

The F13 error code on an Indesit washer indicates a fault in the NTC (Negative Temperature Coefficient) dryer sensor circuit. This thermistor is responsible for monitoring the temperature of the drying system. When the control board detects that the sensor's resistance reading falls outside the expected range, either due to an open circuit (infinite resistance) or a short circuit (near-zero resistance), it triggers the F13 code and halts operation to prevent potential overheating or component damage.

The NTC dryer sensor should read approximately 20 KOhm of impedance at 20 degrees Celsius between pins 1 and 2. Any significant deviation from this value indicates a faulty sensor. The first area to investigate is the wiring and connector integrity. On commutator-type machines, check connector J011; on three-phase models, check connector J14. Corroded, loose, or broken connector pins are a frequent source of intermittent or permanent faults that can mimic a failed sensor.

If the connectors are secure and undamaged, the NTC sensor itself should be tested directly with a multimeter set to measure resistance. A reading that is open (no continuity) or shorted (near zero ohms) confirms sensor failure. Wiring harness damage between the sensor and the control board, such as chafed insulation or a broken conductor, can also produce this fault code and should be inspected along the full cable run before condemning the sensor or board.

Source: manufacturer service documentation.

Common causes of F13

  1. 01

    Loose or corroded connector pins

    Wiring / connection

    Poor contact at connector J011 (commutator models) or J14 (three-phase models) is a common cause of this fault. Inspect the connector for corrosion, bent pins, or incomplete seating, as these can interrupt the sensor signal without the sensor itself being defective.

  2. 02

    Failed NTC dryer sensor

    Part replacement

    The NTC sensor itself can fail in either an open-circuit or short-circuit condition. Test the resistance between pins 1 and 2 of the sensor; a reading significantly different from approximately 20 KOhm at 20 degrees Celsius confirms the sensor needs replacement.

  3. 03

    Damaged wiring harness

    Wiring / connection

    The wiring between the NTC sensor and the control board can suffer chafing, pinching, or a broken conductor, especially in high-vibration areas. Inspect the full cable run visually and test for continuity to identify any break or short in the wiring.

  4. 04

    Faulty control board

    Part replacement

    If the sensor and all wiring test correctly but the fault persists, the control board may be misreading the sensor signal due to a failed input circuit. This is the least common cause and should only be suspected after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about F13

What does F13 mean on a Indesit washer?
F13 on an Indesit washer indicates a fault with the NTC dryer sensor circuit, specifically an open or short circuit condition. The control board monitors the resistance of this temperature sensor and triggers F13 when the reading falls outside the acceptable range. The expected resistance is approximately 20 KOhm at 20 degrees Celsius between sensor pins 1 and 2. The machine halts to prevent unsafe operation until the fault is resolved.
Can I fix the F13 error myself?
A knowledgeable DIYer can address some causes of F13 without professional help. Checking and reseating the wiring connectors at J011 or J14 and testing the NTC sensor resistance with a multimeter are both accessible tasks. If the sensor is confirmed faulty, replacing it is a straightforward repair, though if the control board is the cause, professional diagnosis is recommended.
Is it safe to keep using my washer with an F13 error?
It is not advisable to continue using the machine while F13 is active. The error indicates the dryer temperature sensor is not functioning correctly, meaning the machine cannot accurately monitor heat levels during the drying cycle. Continued use could risk overheating components. Address the fault before running further cycles.
Will resetting the washer clear the F13 error?
A power reset may temporarily clear the displayed code, but if the underlying fault in the NTC sensor or its wiring remains, the F13 error will return when the machine attempts to use the drying function again. A reset alone is not a repair and the root cause must be diagnosed and corrected for the code to be permanently resolved.
How much does it cost to repair an F13 error on an Indesit washer?
Repair costs depend on the cause of the fault. If the issue is simply a loose connector, there may be no parts cost at all, with only a service call fee if a technician is used. An NTC sensor replacement typically falls in the range of 15 to 50 dollars for the part. If the control board requires replacement, costs can range from 80 to 200 dollars or more depending on the specific model and labor involved.

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