Amana Dryer Error Code F3 E1 — Exhaust Thermistor Open/Short
What this means
The F3 E1 error code on Amana dryers indicates the exhaust thermistor (temperature sensor) circuit is reading open or shorted. This sensor monitors the air temperature leaving the drum. A broken sensor, disconnected wiring, or corroded connector can cause this error. The dryer may not heat or may shut down prematurely.
Alternate codes: F3E1
Step-by-step fix
4 stepsLocate the exhaust thermistor
Unplug the dryer and remove the back panel (or lower front panel on some models). The exhaust thermistor is typically mounted on the blower housing or exhaust duct near the lint trap area.
Consult your model's tech sheet for the exact location.
Inspect the wiring
Check the two-wire connector at the thermistor for loose pins, corrosion, or damage. Follow the wires toward the control board looking for breaks or pinch points.
Vibration can cause wire connectors to work loose over time.
Test the thermistor
Disconnect the thermistor leads and measure resistance with a multimeter. At room temperature (about 70°F), the thermistor should read approximately 10,000–12,000 ohms.
An open reading (infinite) means the sensor is broken. A very low reading means it is shorted.
Replace the thermistor
If the reading is out of range, remove the mounting screw, disconnect the old thermistor, and install the replacement. Reconnect the wiring and test the dryer.
Run a timed dry cycle for a few minutes to verify the error does not return.
When to call a professional
If the new thermistor does not clear the code, the control board may not be processing the signal correctly and needs professional diagnosis.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Exhaust Thermistor
Part #W10181986 · $8–$20
If resistance is out of range at room temperature
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.