Pete'sMH gave you a very clear view of the RVFireissue.
May I suggest that you go to this site:
https://www.arprv.com/rv-fire-cause-and-prevention.php
It gives a special attention to the frig-fire issue, with excellent graphics as well.
I installed the ARPRV unit in my AXIS, with two fans to help move air over the coils. Starts faster, runs cheaper and does help prevent the effects of non-level operation.
Call me if you like; I have pics.
John Darbo
817.714.2665
johndarbo@aol.com
Roll Tide