Error code reference

Whirlpool Washer Error Code F13

Motor Control Unit (MCU) error

Motor Control Unit (MCU) error – internal failure, repeating under/over voltage, or over current conditions; can also be caused by momentary loss of neutral feed to MCU during spin cycle.

First step from the service manual

Unplug washer or disconnect power, then check wire harness connections between drive motor, MCU, and CCU.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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