F1 is the flood switch has operated usually because water has leaked onto the floor tray. You will need to switch power off, remove the lower trim panel beneath the door & the sponge sound deadener behind it. You can then see in to the floor tray & see of it is wet. Dry it out. Power on & run machine. Watch if water comes back & where it comes from. Warning: don't touch anything inside there while power is still on at wall switch. Be careful.
Lincoln Appliance NZ, March 2009