Do you light the stove burners first to make sure you've pulled propane into your lines? When I first hook up at a campsite, my refrigerator gas light flashes, until I shut the refrigerator off, light the stove burners, give them 15 to 30 seconds burn with nice blue flame, shut the burners off, and then turn my fridge back on. No flashing light anymore.
2016 Jayco Whitehawk 27DSRL
2010 Ford F-150 XLT Supercrew with Max Tow