The pressure coupler that connects the propane line to the pilot light of the refrigerator was not torqued and was not affixed to keep in place and was fingers strength loose letting propane gas leak. Our camper trailer caught fire after parking , the smoke alarms did not go off, we were in the forest , luckily we acted quickly and used the extinguisher to stop the fire from spreading. At the time there was no one in the trailer but could have been different. We are luckily that the fire occurred when all of us were not in the trailer or sleeping. We have called insurance and plan to call the company as well . There is no reason for our lives to have been put at risk.