Check for any spider webs in the tubing. Use a long pipe cleaner to see if there is any spider webing in the tubing. I had it happen once.
On a regular basis, if the propane has been turned off, it may take several attempts for the fridge to ignite. I always turn on my stove burners first to make sure gas has gotten that far in the line. But the farther down the line from the gas tanks, the longer it can take to get ignited.
2012 Newmar Bay Star 3302
Blue Ox Avail
BrakeBuddy Advantage
2015 Malibu
"Get busy living, or get busy dying."
Andy Dufresne, The Shawshank Redemption