Amana Dryer Error Code F:24

F:24 means the control board detected an open circuit in the inlet thermistor during Diagnostic Test Mode. The inlet thermistor is a temperature sensor that monitors incoming air temperature. Because the circuit is open, no signal is reaching the control board from that sensor. The fault points to either the thermistor itself, its wiring, or the connectors in that circuit.

Start by running Diagnostic Test #4a as directed, which is the designated test for isolating this fault. Use a multimeter to check the inlet thermistor for continuity, and inspect the wiring harness and connectors for damage or looseness. If the thermistor reads infinite resistance, it has failed and needs replacement. If the thermistor tests good, trace the wiring back to the control board to find any breaks or corrosion.

If the fix is a loose connector or minor wiring repair, costs may be limited to diagnostic labor, typically in the range of $50 to $100 for a service call. If the inlet thermistor needs replacement, the part itself is generally inexpensive, with total repair costs including labor often ranging from $100 to $200 depending on your location and service provider. Control board replacement, if ultimately required, would push costs higher.

A simple power reset is unlikely to permanently clear F:24 because the fault reflects an actual open circuit in the thermistor or its wiring, not a temporary control glitch. The code will return when Diagnostic Test Mode is run again if the underlying hardware problem is not corrected. The root cause must be diagnosed and repaired to resolve the code.

F:24 only appears during Diagnostic Test Mode, so the dryer may still run normal cycles. However, with a non-functional inlet thermistor, the control board cannot accurately monitor incoming air temperatures, which can affect heating regulation and thermal safety logic. It is best to address the fault before continued heavy use to avoid potential overheating issues.