Fisher & Paykel Washer, Dishwasher, Oven Error Code 9

Error code 9 indicates a size error, meaning the appliance's control system has detected a mismatch between stored configuration data and the hardware or software it identifies during startup or operation. This is an electronic control level fault. It can affect washers, dishwashers, and ovens from Fisher & Paykel. The appliance will typically stop functioning normally until the configuration conflict is resolved.

A size error is a control system fault and does not directly indicate a hazardous condition such as a gas leak or electrical short. However, because the appliance may not operate as intended when this error is active, it is best to avoid using the appliance until the fault is diagnosed and cleared. Operating an appliance with an unresolved control configuration error could lead to unpredictable behavior.

A reset by disconnecting power for several minutes may temporarily clear the error if it was triggered by a one-time power event or initialization glitch. However, if the root cause is corrupted configuration data or an incompatible control board, the error will return after the reset. A persistent size error requires proper diagnosis to identify and correct the underlying hardware or software mismatch.

Some cases can be addressed by performing a hard reset, which involves disconnecting the appliance from power for several minutes and then restoring power to allow the controller to reinitialize. However, if the error is caused by corrupted firmware, an incompatible control board, or a failed memory component, professional service is typically required. DIYers comfortable with appliance electronics can check whether a recent board replacement or power event preceded the error.

Repair costs depend on the underlying cause. If a control board replacement is needed, parts and labor typically range from $150 to $400 or more depending on the appliance type and specific model. If the issue is resolved through reprogramming or a firmware reload, costs may be lower, generally in the $75 to $150 range for a service call. Getting a diagnosis from a certified technician before committing to parts is recommended.