We had something similar to this happen on our last day of camping last year. We usually heat our water with propane and there was no hot water. I thought we had run out of propane, so switched over to the full tank. Tried to light stove and it didnít work. Hooked up to go and there was a sound from the refrigerator. It was trying to ignite the propane, but didnít work. Used an ice chest for the trip home. When we got home, I read that the propane regulator may be to blame. I replaced the regulator and reset something on the refrigerator, then everything worked. I donít know if a bad regulator can be intermittent, but itís something else to consider.
I think you may be onto something here. Propane is also a common thread for these appliances, and regulators can be intermittent.
Cedar Creek Lake, Texas
2019 Keystone Loredo 290SRL
2019 Ram 2500 4x4 Cummins crew cab