If your frig does not work.
Just an FYI for those dealing with refrigerator issues. I have a Dometic refrigerator/freezer. Ever year if forget and have to relearn how to start it. When it's plugged in lto the AC shore power and I push the on button it always tries to light the LP burner. If I forget to turn on the gas, it always goes to check mode. Not sure why it needs gas pressure to run on AC, but it does. Anyway, once the LP flame has been burning for about 5 minutes, it shuts off the gas and runs on AC. Wired, I know.