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Hi my name is Robert...
What is the Year, Make and Model of the RV?
Do you happen to have the HWH leveling? Try this start the engine, apply the foot brake, release the PARKING brake and see if the bags air up.
IF that does not work need to find the HWH control box, inside that box are some fuses, need to check each fuse in that box, sometimes what you can do is manually air the bags up and then pull the travel fuse, and the bags would stay at that height but the problem doing that is you would have to guess at the ride height and nurse the RV along to have it looked at, if the ride height is not correct it can be a rough ride. Many times releasing the parking brake will allow the unit to default to travel mode. Robert
Follow ups are included.
Let me know if you still need more help....
OK. That box will have multiple fuses in it, make sure none are blown. Beyond that I might see about calling a mobile tech to manually air the bags so you can at least travel and get to a shop. To me it sounds like the dump solenoid is not working.
I am not sure where the HWH box is located, it could be mounted to the floor passenger side dash or outside in a compartment, I might give Winnebago a call and they can tell you exact location, they do have support. Robert
Hi I see you have not selected a rating, if you still need more help please let me know... Robert