Fisher & Paykel Washer Error Code 42

Error code 42 on a Fisher & Paykel washer indicates that the Motor Controller has received inconsistent or contradictory feedback from the rotor during Phase 1 of motor operation. The Motor Controller continuously monitors rotor position and movement signals to coordinate the precise timing of power delivery to the motor windings. When the feedback signals become confused or contradictory, the controller cannot reliably determine rotor position, which prevents safe and accurate motor operation. The system flags this condition as error 42 and halts the cycle to protect the motor and drive components.

Phase 1 typically refers to the initial energization stage of the motor sequence, meaning this fault often surfaces at or near the start of a wash cycle or when the motor first attempts to spin. The rotor position feedback is commonly delivered through a hall sensor array or similar sensing system mounted in relation to the rotor. Wiring faults, connector corrosion, sensor misalignment, or a damaged rotor can all introduce signal noise or false readings that confuse the controller.

Because the Motor Controller itself processes and interprets these signals, a fault can originate either in the sensing components or within the controller board itself. A simple power cycle, as the first diagnostic step recommends, can clear transient electrical noise that may have caused a one-time signal disruption. If the error returns after restarting, further inspection of the wiring harness, rotor sensors, and Motor Controller board is warranted.