Amana · Dryer Moderate
F23 — Inlet Thermistor / Heater Fault
The inlet thermistor or heater sensing circuit is out of range. Often paired with a heating element problem on gas or electric models.
- Keep using it?
- Yes, with caution
- DIY difficulty
- Moderate
- Verified against
- amana.com ↗
How to fix it
- Unplug the dryer.
- Access the heater box at the back of the cabinet.
- Measure the heating element for continuity (electric — should be ~10-15Ω).
- Measure the inlet thermistor — should read ~10kΩ at room temp.
- Inspect all harness connections at the heater box.
- Replace failed component: thermistor, heating element, or (gas) igniter/coils.
- Clear the code and run a test cycle.
Why it happens
Typical signs: F23 displayed · No heat or weak heat · Long cycle times · Dryer shuts off early
- Failed inlet thermistor Inlet sensor opened or shorted.
- Open heating element (electric) Burned-out coil opens the thermistor sense path.
- Bad wire harness Connector unseated or wire chafed against frame.
- Failed igniter or gas valve (gas) On gas models, ignition system fault triggers similar code.
Parts you may need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Amana dryer codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: amana.com.