Probably better if you parked it outside where it could get some air flow. But, lacking that doors open. Absorbition refers usually take 12 to 24 hours to really get to operating temp. Turn it on on enectric, place a plastic cup of water in the freezer with a thermometer in it and let it sit overnight. Same in the middle of the refer box. Check them the next day. Replace both and switch to gas. Again check them the next day. Compare the numbers. Adjust the temp setting as necessary. When new 3 on our refer was good. Last few years, if it was no electric it was set to 4 mid summer heat was fine.