I have two units that do a very similar thing. I tried running them with my MEP-803A which should put out enough juice to get these things started and running. At least the fan. But nothing is happening. Only thing I see is a blinking light at the controls. And many blinking lights inside on the circuit board. But no fail safe LED. Maybe it's something common? Maybe something I can bypass? Maybe it's something many of these units do rendering them a 700lbs paper weight?