Our lift would not work to raise our camper. It didn't even make a sound when we moved lever. We manually cranked it up. Today it lowered fine . We let sit maybe 30 minutes because it says to wait at least five before switching direction to see if it would lift today. Again, no sound or power. Camper is almost two months old so probably under warranty but a quick fix at home would be easier than hitching up and taking in. What should we do?