I have a 2007 35', Itasca, Workhorse chassis. It is presently in the shop due to heat pump/air conditioner problems. They removed the unit, repressurized it, reinstalled it. The first trip out I found it had fantom clitchs, ie: Air would start blowing through the ceiling ducts even though the unit was turned off! I even turned off the AC C/B's along with turning off the thermostat but it didn't stop the fan from blowing. It would blow off and on all night! I know that the propane furnace fan is DC but I assume that the ceiling fans must also be DC. Anyway, the repair so far has cost $2000! My rig has been back in the shop ever since waiting for a new circuit board plus thermostat. Hopefully, that will eliminate the problem. I suspect it will be another $500 or so. Fortunately, I took out an extended maintenance policy at time of purchase! I am sorry that I can't offer any suggestions regarding removing your unit. I heard the tech mention that unlike a house unit, the coolant lines have to be soldered or welded on due to vibration.
Good luck, Knightly