Amana Dryer Error Code F:23

F:23 on an Amana dryer means the outlet thermistor has shorted. The outlet thermistor is a temperature sensor at the dryer's exhaust that monitors outgoing air temperature by sending a resistance signal to the control board. When the board detects a shorted condition, meaning the resistance has dropped to an abnormal level, it stops operation and displays F:23. Diagnosis begins with TEST #4a, which involves checking the thermistor resistance and inspecting the associated wiring circuit.

You should not continue operating the dryer while F:23 is active. The outlet thermistor is part of the dryer's temperature monitoring system, and a shorted sensor means the control board cannot accurately track exhaust temperatures. Running the dryer without proper temperature feedback creates a risk of undetected overheating. Resolve the fault before resuming use.

If the outlet thermistor itself is the cause, the part typically costs in the range of $10 to $40 depending on the specific model. If professional labor is required, total repair costs including diagnosis and installation generally fall in the range of $80 to $200. If the control board is ultimately determined to be the cause, costs will be higher, often in the range of $150 to $350 or more for parts and labor.

A knowledgeable DIYer can attempt this repair by first inspecting the wiring harness and connectors connected to the outlet thermistor for visible damage or shorts. If the wiring appears intact, testing the thermistor with a multimeter to confirm a shorted reading will help confirm whether the thermistor itself needs replacement. Replacing the thermistor is a relatively straightforward repair. However, if the control board is suspected after other components test correctly, professional diagnosis is recommended.

A power reset may temporarily clear the F:23 code, but if the outlet thermistor or its wiring is genuinely shorted, the code will return as soon as the dryer attempts to run again. Resetting does not address the underlying fault. The thermistor circuit must be tested and the defective component repaired or replaced to permanently resolve the error.