F31 Moderate Moderate DIY

Amana Dryer F31 — MTR (Motor) Stalled / Tach Fault

Amana Dryer · Error code F31

What F31 Means

Main control detected the motor stalled or the speed tachometer signal is missing. Drum rotation not confirmed.

Symptoms

  • F31 displayed
  • Drum doesn't rotate
  • Motor hum only
  • Code appears within seconds of start

Common Causes

1
Mechanical bind

Drum, blower, or idler seized.

2
Bad motor

Open winding or worn brushes.

3
Failed tach signal

Hall sensor or feedback wire broken.

4
Bad control board

Motor drive circuit failed.

How to Fix It

  1. Unplug the dryer.
  2. Spin the drum by hand to confirm free rotation.
  3. Inspect the blower wheel and idler for free movement.
  4. Test the motor windings per tech sheet.
  5. Inspect motor harness and tach connector.
  6. Replace motor or control as indicated by tests.

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.

Common replacement Dryer drive motor View on Amazon→ Common replacement Idler pulley assembly View on Amazon→

More Amana Dryer Codes

AF AF — Restricted Air Flow dET dET — Detergent Detected (washer-dryer combo / steam models) E1 E1 — Thermistor Open (legacy display) E2 E2 — Thermistor Shorted (legacy display) Ed Ed — End of cycle / drying complete indication issue F01 F01 — Main Control Board Failure

All Amana codes → All 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.