Fisher and Paykel nautilus 920 dishwasher displays a F1 fault. The control consol circuit board has just been replaced after appearing to arc at the heater element terminals. Disconnected the two wires to flood sensor switch (F1 fault) but fault code remains.

Peter H, March 2009

Disconnecting the wires to the flood switch will actually cause the fault. Connect the two wires back on to the flood switch using the two outside pins of the 3 in the connector. Make sure float is sitting right down & not operating flood switch. You can raise & lower float manually & should hear switch click on & off. Also check for any corrosion on switch or terminals that would cause a bad connection.

Lincoln Appliance NZ, April 2009