How to Fix / Troubleshooting

Safety first: Unplug the washer before accessing the motor.

Access motor: Remove the rear panel and locate the tachometer sensor at the rear of the motor shaft.
Inspect sensor and magnet: Ensure the tach sensor is firmly mounted and the magnet ring is intact and not cracked or loose.
Check wiring: Follow the tach wires to the main harness. Look for breaks or chafing. Repair or replace as needed.
Test sensor: Measure resistance of the tach coil; compare with Primus specifications. An open circuit indicates a failed sensor.
Replace tachometer or motor: If the tach is not separately replaceable on your motor type, the entire motor assembly may need replacement.
Re-test spin: After repair, run a spin-only cycle to confirm correct speed and that E20 is cleared.

Washer displays E20; drum may not reach set speed and cycle ends prematurely.

Possible Causes