Just to make sure, you have it running on propane, right? If so, are you going up to higher altitude, i.e., above 5000 feet? I have a whole 'nother thread here about my problems with the Norcold on my 2018 SLX 267BHSW failing to re-light at higher altitudes when on propane. The thread describes a fix I discovered which worked great and fridge has worked flawlessly ever since. If you think that could be the issue, you might want to look up that thread.
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