Electric drive motor removed from a washing machine

Generic photo: Poo (Wikimedia Commons user) · Public Domain

Washer motor control unit / inverter board

Direct-drive and inverter washers use a motor control unit (MCU) that powers a 3-phase motor and reads a hall sensor or tach. Separate MCU, motor windings, hall sensor and harness before buying a board.

Single source ~45 min advancedBrands: LG, Samsung, Whirlpool, GE, Frigidaire

Before you start

Unplug and wait for the board capacitors to discharge before handling the MCU
Do not run the motor with the drum open or panels off near moving parts

Diagnostic steps

Unlock all 6 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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