Tape the door latch down 7 hold the flapper back. unplug refer for a minute & plug back in. unit should begin harvest cycle. Check that fingers cycle, heater heats 7 water fills. if does not cycle more than likly ya need to replace optics. Can't remenber which pins to short out to make it work from the receiver side. Had one where the optics ailed, no light 7 the thing just made ice. evertime lady would open door ice flooded her kitchen. I to go with my lady, will try to get you some info.