When I attempt to run the controller in manual, or auto mode, it immediately shows "SHORT" on the LED. I checked voltage from transformer and it is good. I removed all 8 valve wires and gnd and measured resistance across each valve wire to gnd and that looks good. Can I assume this controller is bad? It is a HARDIE Total Control with 8 stations. With all gnd and valves wires the unit still shows "Short" when I try to run it manual/auto and there is no voltage to valve post.