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Error code reference

Maytag Dryer Error Code F:24

Inlet thermistor is open (appears ONLY in diagnostic test mode).

Maytag codesMaytag dryer codes

Inlet thermistor is open (appears ONLY in diagnostic test mode).

First step from the service manual

See TEST #4a, page 6.

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 dryer indicates that the inlet thermistor circuit is open. The inlet thermistor is a temperature-sensing component located at the air intake area of the dryer. It monitors incoming air temperature and sends resistance-based signals to the control board. An open circuit means the control board is receiving no signal from the thermistor, which typically indicates a broken wire, failed sensor, or a disconnected connector in that circuit.

This code appears exclusively during diagnostic test mode, meaning it will not display during a normal drying cycle. Technicians must enter the dryer's diagnostic mode to retrieve it. Because the thermistor communicates via resistance values, an open reading means the resistance has gone to infinity, indicating a complete break in the circuit rather than a shift in value that might suggest a partially degraded sensor.

The first recommended diagnostic step is TEST #4a, which walks through verifying the thermistor circuit. This typically involves checking wiring continuity between the thermistor and the control board, inspecting connectors for corrosion or damage, and measuring the thermistor's resistance directly. If wiring and connectors check out, the thermistor itself is likely the failed component and will need replacement to restore proper temperature monitoring and safe dryer operation.

Source: manufacturer service documentation.

Common causes of F:24

  1. 01

    Failed inlet thermistor

    Part replacement

    The thermistor itself can fail internally, causing an open circuit with infinite resistance. Testing the thermistor directly with a multimeter will show no continuity if the component has failed.

  2. 02

    Broken or damaged wiring

    Wiring / connection

    A wire in the thermistor circuit can break due to vibration, heat, or age, creating an open circuit. Inspect the wire harness from the thermistor to the control board for any visible breaks or fraying.

  3. 03

    Loose or corroded connector

    Wiring / connection

    The connector joining the thermistor to the wiring harness can work loose or develop corrosion, interrupting the circuit. Check that all connectors in the thermistor circuit are fully seated and free of oxidation.

  4. 04

    Thermistor pulled from mounting position

    Wiring / connection

    If the thermistor has shifted out of its mounting location, its lead wires can become stressed and break the connection. Verify the sensor is properly seated and secured in its designated position at the air inlet.

  5. 05

    Control board fault

    Part replacement

    In less common cases, the control board's thermistor input circuit can fail, causing it to misread a functioning thermistor as open. This is typically diagnosed after the thermistor and wiring have been confirmed good.

See the test procedure for each cause

Frequently asked questions about F:24

What does F:24 mean on a Maytag dryer?
F:24 means the control board has detected an open circuit in the inlet thermistor. The inlet thermistor is a temperature sensor that monitors incoming air at the dryer's intake. An open circuit indicates a complete break in the sensor's electrical path, which can be caused by a failed thermistor, broken wiring, or a loose connector. This code only appears in diagnostic test mode and requires hands-on testing to diagnose.
Can I fix an F:24 error on my Maytag dryer myself?
A knowledgeable DIYer can address this code by checking the wiring and connectors in the inlet thermistor circuit first, as these are the simplest fixes. If the thermistor itself has failed, replacing it is a straightforward repair on most Maytag dryer models. However, you will need a multimeter to test resistance and continuity properly. If the wiring and thermistor both test fine, a control board issue may be involved, and professional service is recommended at that point.
Will resetting the dryer clear the F:24 error code?
Resetting the dryer will not permanently clear F:24 because the code is tied to an actual open circuit condition that must be repaired. Since the code only appears in diagnostic test mode, it will continue to show up each time diagnostics are run until the faulty thermistor, wiring, or connector is repaired or replaced. Addressing the root cause is the only way to resolve it.
Is it safe to use my Maytag dryer when it shows an F:24 code?
The F:24 code only surfaces during diagnostic test mode and not during a standard drying cycle, so the dryer may appear to run normally. However, a non-functioning inlet thermistor means the control board is missing temperature data it uses to regulate operation safely. Continuing to use the dryer without a working thermistor could contribute to improper temperature control, so it is best to have the issue diagnosed and repaired promptly.
How much does it cost to repair an F:24 error on a Maytag dryer?
If only the inlet thermistor needs replacement, parts and labor costs are typically in the range of $75 to $200 depending on your location and the service provider. If the issue is simply a loose or corroded connector, a service call fee may be the primary cost. A control board replacement, if required, is considerably more expensive and can range from $200 to $400 or more including labor. Getting a diagnostic assessment first will help you understand which repair is actually needed.

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