do this
without jumping the circuit to make it run
turn on the lift and try to operate it
look on the controller and it should have 2 LED lights
a green one and a red one (there may be more than one red one)

what are they doing when you activate the travel?
if there is an error present they will be flashing a code either when you turn on the unit or when you try to operate it
how many flashes and if there is more than one sequence of flashes tell me the order they come in when you first see it