Originally Posted by Bama Rambler
The converter/charger should be attached to the breaker/fuse panel. It's pretty easy to change out if you're fairly handy.
The check light usually comes on the fridge when it senses that the burner failed to light. Do you have the propane turned on to the fridge.
Make sure you have a charged battery and then turn the fridge off and then back on and see if it lights.
Have you checked and reset all the breakers in the power panel?
Have you tested all the fuses in the panel?
You can charge your battery (assuming you don't have a portable one) by using jumper cable from truck battery to RV battery. I don't have to say be careful don't reverse anything or short out cables. If you try to charge from the 7 way plug it will never get there and would take all day. It will charge faster with everything 12 volt turned off.
Like BR said, set the fridge on gas only. Once you have a decent charge see if the fridge will light... its automatic, but the battery has to be good.