Washer displays F31, may not spin or may have erratic spin speeds.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed motor control board, damaged motor tachometer, loose motor harness, main control misinterpreting speed

Safety first: Unplug the washer before accessing the motor or control boards.

Step-by-step:

Check load: Remove heavy or unbalanced items and try a spin-only cycle.
Inspect motor and harness: Remove the rear panel, check the motor connector and wiring, and reseat.
Check belt: Ensure the belt is intact and not slipping.
Replace components: If mechanical parts are fine and F31 persists, replace the motor control board or drive motor as indicated by diagnostics.

Hard 4/5

Motor Control Board (MCU)

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