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Error code reference

Maytag Dryer Error Code F-24

Inlet thermistor is open (only appears in diagnostic test mode, electric models only).

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Inlet thermistor is open (only appears in diagnostic test mode, electric models only).

First step from the service manual

See TEST #4a - check wire connections at machine control and inlet thermistor.

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

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What F-24 means on a Maytag dryer

The F-24 error code on a Maytag electric dryer indicates that the inlet thermistor circuit is open. The inlet thermistor is a temperature-sensing resistor positioned at the air intake of the dryer drum. Its job is to continuously monitor incoming air temperature and report that data to the machine control board. When the control board detects an open circuit in this thermistor's signal path, it logs F-24. This code only surfaces during diagnostic test mode, meaning the dryer may still operate in normal cycles, but the underlying fault can affect temperature regulation accuracy and drying performance.

An open circuit in the thermistor means the electrical path between the sensor and the control board has been broken entirely. This is different from a short circuit or a resistance drift. In a functioning system, the thermistor's resistance changes predictably with temperature, allowing the control board to calculate air inlet temperature. When the circuit is open, the board receives no usable signal. This can result from a failed thermistor, corroded or disconnected wire terminals, or damaged wiring along the harness that runs between the sensor and the machine control.

Diagnosing this fault begins with a visual and electrical inspection of the wire connections at both the machine control board and the inlet thermistor itself, per the TEST #4a procedure. Technicians should check for loose connector pins, broken wires, or signs of heat damage near the thermistor housing. If wiring checks out intact, resistance testing of the thermistor itself is the next step to confirm whether the component has failed internally.

Source: manufacturer service documentation.

Common causes of F-24

  1. 01

    Loose or disconnected wire connection

    Wiring / connection

    A connector pin at either the inlet thermistor plug or the machine control board terminal may have backed out or corroded, breaking the circuit. Inspect both ends of the wiring harness for loose, unseated, or oxidized terminals.

  2. 02

    Failed inlet thermistor

    Part replacement

    The thermistor itself may have failed internally, creating an open circuit within the component. Resistance testing of the thermistor with a multimeter will confirm if the sensor reads out of range or shows no continuity.

  3. 03

    Damaged or broken wiring harness

    Part replacement

    The wiring between the inlet thermistor and the machine control board may have a broken conductor due to heat exposure, pinching, or repeated flex stress. A continuity test along each wire in the harness will locate the break.

  4. 04

    Corroded or burnt connector terminals

    Part replacement

    Heat and moisture over time can corrode terminal contacts or cause a connector to char, increasing resistance to the point of an open circuit. Look for discoloration, melting, or pitting at the connector body.

See the test procedure for each cause

Frequently asked questions about F-24

What does F-24 mean on a Maytag dryer?
F-24 on a Maytag electric dryer means the control board has detected an open circuit in the inlet thermistor, the temperature sensor located at the dryer's air intake. This code only appears during diagnostic test mode and does not indicate a catastrophic failure, but it does mean the sensor circuit is broken. The cause can be a failed thermistor, a loose wire connection, or damaged wiring between the sensor and the control board.
How do I fix the F-24 error code on my Maytag dryer?
Start by checking all wire connections at the inlet thermistor and the machine control board for loose or corroded terminals, as this is the first step in the TEST #4a diagnostic procedure. If all connections appear secure, use a multimeter to test the thermistor's resistance to determine if the component itself has failed. A broken wire in the harness between the thermistor and control board is also possible and can be found with a continuity test. Replace any failed component once identified.
Will resetting my Maytag dryer clear the F-24 code?
Since F-24 only appears in diagnostic test mode, a power reset may clear it from the display, but it will return the next time a diagnostic cycle is run if the underlying fault has not been repaired. The open circuit in the thermistor wiring or the failed sensor must be corrected to resolve the code permanently. Resetting without repair does not restore proper temperature sensing function.
Is it safe to use my Maytag dryer with an F-24 error code?
The F-24 code only appears in diagnostic mode, so normal drying cycles may still initiate. However, an open inlet thermistor circuit means the control board cannot accurately monitor incoming air temperature, which can affect how the dryer regulates heat. Running the dryer without a functioning temperature sensor is not recommended for extended periods, as temperature control may be unreliable.
How much does it cost to repair the F-24 error on a Maytag dryer?
If the fix is simply reseating a loose wire connector, the repair costs nothing beyond your time. Replacing a failed inlet thermistor typically costs between $15 and $40 for the part, plus labor if a technician performs the work. If the machine control board itself has damaged terminals or is faulty, repair costs can range from $100 to $300 or more depending on the board and labor rates in your area.

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