I found this manual that list the part number of the your control box. It may help even if it isn't identical.
http://www.dometic.com/QBank/EPiServer/Dometic/US/Manuals/Marine-manuals/Refrigeration/roof-top-ac-hp-diagnostic-service-manual_17589.pdf
You should be able to start it up on the bench but you'll need to come up with a compatible thermostat or jumper out the necessary wires.
Good luck,
Joe and Evelyn