Does a generac whole house have to be hooked to transfer switch to operate. Having overcrank problems with my 15 KW that is about 17 years old. Weather is going south and would like to disconnect and take into warm shop building to work on. Generator starts and runs 5 or 10 seconds and then shuts down. Have already set valves, checked propane pressure, fuses, battery, oil pressure switch, checked brushes and cleaned slip rings. Have propane in shop and and not much work to disconnect and haul out there with tractor. I don't think it would make any difference but would be nice to be sure before going to the trouble.