It doesn't have one. It has a sensor PCB which detects moisture on the bottom tray. You need to remove lower drawer, completely dry out the lower tray. (Sponge followed by warm air from hair dryer is good) Sensor is under the plastic cover at rear of bottom tray so make sure you dry under the plastic holder. Make sure power is off at the wall plug before touching anything inside the cabinet. When dry the F1 fault will go away but you need to find out which drawer leaked and why or else it will just come back again.
Mk, December 2010
