RV Repair: Fridge, fridge control, gas present

Question
Hello I was wondering why my Fridge will work when it has electricity, but when I switch to gas it will not work.  I have checked all the fuses, and I just filled the tanks.  At this point I need some more ideas to troubleshoot before taking it in to be looked at.  Thank you for your time.

Answer
is gas empty?  Is regulator plugged?  Mainly is gas getting to the fridge???

Are there any lights on the fridge control panel?  

There are many reasons why this could be happening, and they can get to be involved to check all angles.  Check the basic stuff like gas present, or problems with igniter.  Other than that you will have to go in.