You should find HWH hydraulic and electrical diagrams here: 2003 Winnebago System Diagrams
You may also find this entry from their FAQ
114. My slide-out creeps out after I retract it. What could be the problem? The problem depends on the type of slide-out mechanism. HWH has two basic types of rooms; A style rooms –room extends when the cylinder extends and the room retracts when the cylinder retracts. The B style room – room extends when the cylinder retracts and the room retracts when the cylinder extends. The following link explains the A and B style rooms and how to identify which type of room you are dealing with: mi158331.pdf If you have an A style room that creeps out, the most likely problem is the cylinder extend valve. It could be the check valve or an internal cylinder leak, but the solenoid valve is most likely the problem. If you have a B style room that creeps out, the problem is most likely the cylinder retract valve. You should check for visible oil leaks because a visible oil leak can cause a creeping issue.