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Error code reference

Amana Dryer Error Code F:22

Outlet thermistor is open.

Amana codesAmana dryer codes

Outlet thermistor is open.

First step from the service manual

See TEST #4a.

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

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What F:22 means on a Amana dryer

The F:22 error code on an Amana dryer indicates that the outlet thermistor circuit is open. The outlet thermistor is a temperature-sensing component located at or near the exhaust outlet of the dryer drum. It continuously monitors the air temperature leaving the drum and reports that data to the control board. When the control board detects an open circuit in the thermistor, meaning no signal or continuity is present in the sensor loop, it triggers the F:22 fault and halts operation to prevent potential overheating.

An open thermistor circuit typically means the thermistor itself has failed internally, or there is a break in the wiring harness connecting it to the control board. Thermistors are resistive sensors, and a healthy unit will show a measurable resistance value at room temperature. An open reading, essentially infinite resistance, confirms the sensor or its circuit has lost continuity. Corrosion at connector terminals, a pinched or broken wire, or a thermistor that has burned out can all produce this fault condition.

Diagnosing this code begins with TEST #4a as outlined in the technical documentation for this platform. That test walks through verifying continuity and resistance in the outlet thermistor circuit, isolating whether the fault lies in the sensor itself or in the wiring between the sensor and the control board. Resolving the F:22 code requires either repairing the wiring harness or replacing the outlet thermistor, depending on what the test reveals.

Source: manufacturer service documentation.

Common causes of F:22

  1. 01

    Failed outlet thermistor

    Part replacement

    The thermistor itself has burned out or broken internally, resulting in an open circuit with no measurable resistance. This is the most frequent cause and can be confirmed by checking resistance across the thermistor terminals.

  2. 02

    Broken or damaged wiring harness

    Wiring / connection

    A wire in the harness connecting the outlet thermistor to the control board may be broken, frayed, or pinched. Visually inspecting the wiring path and checking for continuity with a multimeter can identify this issue.

  3. 03

    Corroded or loose connector terminals

    Wiring / connection

    Corrosion or a poor connection at the thermistor connector or control board connector can interrupt the circuit and produce an open reading. Inspect the connector pins for discoloration, buildup, or loose fit.

  4. 04

    Control board fault

    Part replacement

    In rare cases, the control board itself may be unable to properly read the thermistor circuit even when the sensor and wiring are intact. This should only be suspected after the thermistor and wiring have been ruled out.

See the test procedure for each cause

Frequently asked questions about F:22

What does F:22 mean on a Amana dryer?
The F:22 code means the outlet thermistor circuit is open, indicating the control board is receiving no signal from the temperature sensor located at the dryer exhaust outlet. This sensor monitors the air temperature leaving the drum, and an open circuit means continuity has been lost in the sensor or its wiring. The dryer will not run while this fault is active. Diagnostic testing of the thermistor and its circuit is required to resolve the issue.
Can I fix the F:22 error myself?
A knowledgeable DIYer can often resolve this code by testing the outlet thermistor for continuity and resistance, then replacing it if it reads open. You will need a multimeter and basic disassembly tools. If the thermistor tests fine, inspecting and repairing the wiring harness is the next step. If you are not comfortable working with wiring or internal dryer components, a qualified technician is recommended.
Is it safe to keep using my dryer with an F:22 error?
No, you should not continue using the dryer while the F:22 code is active. The outlet thermistor is a safety-critical component that helps prevent overheating. Without a functioning temperature sensor at the exhaust, the dryer cannot properly regulate heat, which creates a potential fire or overheating hazard. The dryer will typically disable itself when this fault is detected.
Will resetting the dryer clear the F:22 code?
A power reset may temporarily clear the code display, but the fault will return as soon as the control board checks the thermistor circuit again during operation. The underlying problem, an open thermistor or broken wiring, must be physically repaired or replaced before the code will clear permanently. Resetting without fixing the root cause is not a solution.
How much does it cost to repair an F:22 error on an Amana dryer?
If the outlet thermistor itself is the failed component, the part typically costs between $15 and $40, making it a relatively affordable repair. If a technician is needed for diagnosis and replacement, total repair costs including labor generally range from $100 to $200 depending on your area. If the control board is ultimately at fault, costs can be higher, typically in the $200 to $350 range for parts and labor combined.

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