Washer-dryer shows F25; spin performance is poor or unit will not reach high spin speed.

Safety first: Unplug the unit before accessing the motor area.

• Access motor and tachometer: Remove the rear panel. Locate the drive motor; the tachometer is typically integrated at the rear of the motor with a small harness.
• Inspect wiring: Check the tachometer connector and wires for damage or looseness. Reseat the connector.
• Test tachometer: With the motor removed or disconnected, measure resistance across the tachometer terminals. Compare to service specs. If open or shorted, replace the motor assembly (tach is usually not sold separately).
• Check drum movement: Spin the drum by hand to ensure it rotates freely. Binding bearings or a seized tub can cause speed errors.
• Control board: If motor and tach test good, the main control’s speed sensing circuit may be defective and require replacement.