Kenmore Dryer Error Code F-24

F-24 on a Kenmore dryer means the control board has detected an open circuit in the inlet thermistor. The inlet thermistor is the temperature sensor located at the dryer's air inlet, and an open circuit means the board is receiving no signal from it. This code only appears during diagnostic test mode. The issue is typically caused by a failed thermistor, broken wiring, or a corroded connector.

Running the dryer without a functioning inlet thermistor carries risk because the control board cannot accurately monitor inlet air temperature. This can lead to overheating conditions inside the drum or tripping of other safety components such as thermal fuses or high-limit thermostats. It is best to resolve the F-24 fault before returning the dryer to regular use.

If only the inlet thermistor needs replacement, parts typically range from $15 to $40 depending on the specific model, making it one of the more affordable dryer repairs. If the wiring harness or control board is also involved, total repair costs can range from $100 to $300 or more depending on parts and labor. Getting a diagnosis before purchasing parts is recommended to avoid unnecessary expense.

A knowledgeable DIYer can diagnose this code by following the dryer's TEST #4a procedure to check the inlet thermistor circuit. Checking for continuity through the thermistor and inspecting wiring for damage are straightforward tests with a multimeter. Replacing the thermistor is a relatively accessible repair, though comfort with basic electrical testing is required. If the control board is suspected, professional diagnosis is recommended.

Resetting the dryer will not permanently clear the F-24 code if the underlying fault in the thermistor circuit is still present. Because this code only appears in diagnostic test mode, it will return whenever diagnostics are run until the open circuit condition is repaired. The thermistor, wiring, and connectors need to be inspected and the faulty component replaced or repaired.