Error code reference

Whirlpool Washer Error Code F99

Not supported

Not supported – user selected on the UI an unsupported cycle on the CCU; mismatch of User Interface and CCU or corrupted EEPROM.

First step from the service manual

Perform Service Cycle to pair the UI and CCU software; replace User Interface; if failure still present, also replace the 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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