I am using a 36-70v input 24vDC output DC-DC converter to power an electric motor from a hydorgen fuel cell. The problem is the converter turns off, goes in to over load protection, when any load iss applied. The converter is rated at 9 amps in 14 amps out and the load I've been trying is 5.3A. I have tried calling the manufacturer but I tried their suggestions to no avail. Any suggestions?