Fisher & Paykel Washer Dishwasher Oven Error Code 3

Error code 3 on Fisher & Paykel appliances indicates a motor controller fault. The motor controller is the electronic board or module responsible for regulating power delivery to the drive motor, interpreting speed and load feedback, and managing start, run, and stop sequences. When this fault is detected, the appliance's main control system has determined that the motor controller is operating outside acceptable parameters or has failed to respond correctly to control signals.

The fault can stem from several sources within the motor control circuit. The motor controller board itself may have developed a component-level failure such as a blown capacitor, failed triac or IGBT switching component, or a damaged power relay. Wiring harness issues between the main control board and the motor controller, including loose connectors, corroded terminals, or chafed insulation causing shorts, are also common contributors. In some cases, the drive motor itself can present an abnormal load or impedance back to the controller, triggering the fault code as a protective response.

Because this code covers a broad fault category within the motor control system, diagnosis typically involves inspecting the wiring and connectors in the motor circuit first, then evaluating the motor controller board for visible damage such as burn marks or swollen components. If the motor controller board shows no obvious damage, testing the drive motor's windings for proper resistance and checking for shorts to ground can help isolate whether the fault originates in the controller or the motor itself.