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I would guess from the sound of it that your NordicTrack machine has a stuck incline, or it has (mostly likely of all) a defective incline position sensor, a jammed incline, or defective control board circuitry for the incline motor.
The constant whirring, and the message 'INCLINE' in the window, point to this - the incline may be at maximum elevation, perhaps? in which case the incline position sensor is the likely fault. But the other causes I mentioned could be, too.
Your machine will need repairs, unless - and this is unlikely - an Incline Calibration could help.
If calibrating the incline does not help, then you would need a repair co. near you, in which case, let me know your local zip code and/or town/city and state, and I will provide you with contact information for fully qualified NordicTrack repair co.s in your region.
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