One of the big fire causes in these RV's has been the absorption refrigerators that use highly flammable ammonia in the cooling unit and if operated off level, are prone to failure and commonly can start leaking ammonia which can ignite when exposed to the heat source that drives the cooling system. Several years ago, after reading about this problem after having two cooling units replaced, the second one had a leak, I purchased and installed an ARP device and our cooling unit replacement merry-go-round has stopped and our fridge works better than when new. I do not work for this company and have no financial connection with them, but do appreciate a quality product that works.
https://www.arprv.com/