Fisher & Paykel Washer Error Code 243

Error code 243 on a Fisher & Paykel washer indicates a Stepper Test Failure caused by a Rotor Position Sensor (RPS) fault. During a motor step test, the motor controller sends a specific sequence of electrical signals to advance the motor through a defined position. In Phase 6 of that sequence, the controller checks feedback from the rotor position sensor to confirm the motor has moved to the expected angular position. When the motor fails to reach that position or the sensor reports an incorrect reading, the controller logs fault code 243 and halts operation.

The rotor position sensor is a critical feedback component in Fisher & Paykel's direct-drive motor system. It continuously monitors the rotor's angular location and reports that data to the motor controller. If the sensor itself is faulty, its wiring is damaged, or the connections between the sensor and the controller have degraded, the controller cannot confirm correct motor positioning. This fault is closely related to fault codes 53 and 54, which cover RPS-specific errors, and those codes should be checked alongside 243 to fully diagnose the root cause.

Wiring integrity is the first area to inspect, as loose connectors, chafed wire insulation, or corroded terminals between the rotor position sensor and the motor controller are common sources of this fault. Beyond wiring, the sensor itself may have failed, or the motor windings may have an issue preventing the rotor from physically completing the step sequence. A complete diagnosis should include visual inspection of the wiring harness, continuity checks on the sensor circuit, and a review of any accompanying fault codes.