What is BRAND/MODEL of your fridge?
Installation clearances are critical to good airflow which determine how well fridge can function and maintain cold in high ambient temps
Top/side/bottom clearances should be ZERO (0") between fridge and compartment and need to be completely sealed
Backside clearance (between rv outside wall and back of fridge) should be no more then 1"
If clearance is more...then baffles may be required to direct airflow up thru absorber tubing and then across condenser fins at top.
No dead air space at top either.
Fans help when fridge is installed in a slideout due to lack of natural draft that occurs with roof top venting.
Airflow thru lower side wall vent and out top side wall vent is NOT ideal so addition of fans is good