Refrigerator on propane problem

This is our second year with our 2007, 3023. Last year the refrigerator was very difficult to get started on propane. I was able to do it but it took several attempts. This year I can not get it to light at all. It works on battery and 12v. When I push the spark button the gauge does not move to the right it seems to move slightly to the left and never moves to the right. I had the gas on, the stove and the heater worked fine. It seems that it is not getting a spark or the gas is not coming through. Please help on locating the problem.