Mike,
There are a multitude of things that could be causing your issue, but since you did not state what type of HWH system you have (slides only, slides and air leveling, or slides air leveling and hydraulic jack leveling), there is not much I can say to help you. The best that I can do is tell you to call HWH technical support for trouble shooting help. They have excellent support, but they are so busy that you usually have to wait a day or so for a call back.
Gerald