I'm still a novice to this, but glad to help where I can. So the fridge isn't cooling at all on propane, but does on electric? And the propane part of the fridge does work? My understanding is that either the electric or the propane is heating the gas causing the cooling, so if the propane is working, I'm not sure why it wouldn't cool. However, know that myself and many others have changed to a residential fridge for better and safer cooling and before you invest a lot of money in that fridge, you may want to look at those options. Keep the updates coming.