This sounds like there is an inadequate power supply to the panel circuit. Check that the batteries are properly seated in the battery compartment. Also, check that the batteries are not low or dead, as it could be that they are seated properly but not providing the necessary charge to the panel when you switch it on.
Check that the incline plus switch is not jammed or likely there is a defect in the panel circuit causing plus incline to be repeated. This needs to be trouble-shooted by removing and testing the panel circuit.
