Fisher & Paykel Dishwasher Error Code FF

The FF error code on a Fisher & Paykel dishwasher indicates that the top tub is not responding to communication signals from the main control system. Fisher & Paykel double-drawer dishwashers use two separate tub controllers, one for each drawer, and these controllers must communicate reliably with each other and with the user interface. When the system detects that the top tub controller is not responding as expected, it flags the FF code to alert the user and technician that something in the top drawer's control circuit has failed or lost communication.

The primary suspect in an FF fault is a failed or malfunctioning top tub controller. The diagnostic approach involves swapping the top and bottom controllers to determine which unit is at fault. If the controller that was in the top drawer continues to malfunction when installed in the bottom position, the controller itself is defective and requires replacement. If the problem follows the tub position rather than the controller, the issue may be with the wiring harness, connectors, or power supply to the top tub rather than the controller board itself.

Because this code is specifically tied to the top tub not responding, technicians should inspect the wiring connections between the top controller and the main harness before concluding that the board has failed. Loose, corroded, or damaged connectors can interrupt the communication signal and produce this fault without any actual board failure. A thorough visual inspection of all connectors, followed by the swap test, provides a reliable path to root cause identification.