I have to ask what is in the frig during your test?
The reason I ask, when I turn on my RV 8' FRIG, I put 18 beers in the second shelf and 6 Sprites in the top door shelf. They act as heat/cold stabilizers and when the door is opened and shut, the frig temp does not change.
If, you do not have any heat/cold stabilizers in it, yeah, the temp swing would probably be normal.
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2012 Ram Laramie 3500 DRW 4x4 3.73 Tow Max Pkg B&W Companion 60 gal RDS aux fuel tank. 2014 Montana 3150RL, 2 A/C's, Leather, 6 Point Jacks, Splendede WD2100XC, Mor/ryde X-Factor, Duravis 250 tires with TST 507RV monitors. 2 x Honda EU2000's
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