We had a few flame-out problems in heavy cross winds. I found a simple fix with a cut-to-fit home air filter.
I cut it to fit just inside the bottom access door. It fixed the flame out issues and keeps the compartment a little cleaner.
I also installed a small thermistor controlled fan directly on the coils on the back of the refrigerator. This helped the entire unit stay much cooler both under way and on hot days in the sun.
There is simply not much run for air flow near the top of the refer where the trailer side walls make the curve. The air slows down in the close fit near a set of fins at the very top corner of the refer. Ours would keep the freezer section hard frozen, but the lower compartment would reach the mid 40s. Too warm for comfort, in my opinion.
These fixes keep it in the mid 30s, no matter what.
Jeff & Cindy
'09 27FB Flying Cloud
'91 350 LE MH