Fisher & Paykel Refrigerator Error Code F31

F31 means the main control board is not receiving a display signal on the clock or data communication line from the user interface board. This points to a shorted wire, broken wire, or a failed component in the communication circuit. The refrigerator flags this fault to alert you that communication between the control board and the display panel has been lost.

The F31 fault is a communication error rather than a hazard-related fault like overheating or a refrigerant issue. However, if the display and control boards cannot communicate properly, the refrigerator may not operate correctly, which could compromise food safety over time. It is best to address the fault promptly to ensure the appliance is functioning as intended.

A power reset may temporarily clear the error code from the display, but if the underlying wiring or component fault is still present, the F31 code will return once the control board attempts communication again. A reset is useful for confirming whether the fault is intermittent, but it does not repair a shorted wire, broken wire, or failed board. The root cause must be diagnosed and corrected for the error to be resolved permanently.

A knowledgeable DIYer can inspect the wiring harness and connectors for visible damage, corrosion, or loose connections and reseat connectors as a first step. However, if the fault is due to an internal wire break, a shorted harness, or a failed board, replacing those components requires some technical skill and the correct replacement parts. If you are not comfortable working with wiring or control boards, a qualified appliance technician is recommended.

Repair costs depend on what is causing the fault. If only a wiring harness or connector needs repair, costs are generally in the range of $75 to $200 including labor. Replacing a display board or main control board typically raises the total to somewhere between $150 and $450 or more, depending on parts pricing and technician rates in your area.