Fisher & Paykel Washer Dishwasher Oven Error Code 9

Error code 9 on Fisher & Paykel appliances indicates a size error, which refers to a mismatch or conflict detected between configuration data stored in the control system and the actual hardware or software components the controller identifies during operation. This type of fault typically occurs at the firmware or electronic control board level, where the appliance's main controller compares expected parameters against what is actually detected in memory, connected modules, or installed hardware profiles. When those values do not align, the controller flags a size error and halts normal operation to prevent incorrect behavior.

This error can affect Fisher & Paykel washers, dishwashers, and ovens because all of these appliances use programmable electronic control boards that store configuration data. Common triggers include a control board that has been replaced with an incompatible unit, corrupted firmware or EEPROM data on the control module, or a software update that was interrupted or applied incorrectly. In some cases, a failed control board may generate this code if internal memory has become partially corrupted.

Diagnosing a size error typically requires verifying that the installed control board or module matches the specifications required for the specific appliance model. Technicians should check for any recent board replacements, firmware updates, or power events such as surges that could have disrupted stored configuration data. If the hardware appears correct, reprogramming or replacing the control board is generally the next step in the repair process.