F23 Moderate Moderate DIY
Amana Dryer F23 — Inlet Thermistor / Heater Fault
Amana Dryer · Error code F23
What F23 Means
The inlet thermistor or heater sensing circuit is out of range. Often paired with a heating element problem on gas or electric models.
Symptoms
- F23 displayed
- No heat or weak heat
- Long cycle times
- Dryer shuts off early
Common Causes
1
Failed inlet thermistor
Inlet sensor opened or shorted.
2
Open heating element (electric)
Burned-out coil opens the thermistor sense path.
3
Bad wire harness
Connector unseated or wire chafed against frame.
4
Failed igniter or gas valve (gas)
On gas models, ignition system fault triggers similar code.
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.
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
Verified against manufacturer documentation: amana.com
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.