2013 Keystone Alpine leveling system won't work- need help

If you want to try and do it blind (no display) try this: turn it on, press the up arrow once, then the enter button then you SHOULD be in manual mode. Then you can press the button for front and the front should start down. When you want them to go up do the same only press the retract button before pressing the button for the front.

If nothing happens it is more than just the display... maybe a fuse for the hydraulic system itself.

Hope that helps