Thanks for the suggestions. The fridge is 10 years old (mh is a 2003) but it's certainly possible that the gas jet is clogged or the gas pressure is too low (alhtough it's not a problem when we are parked - we often camp without hookups but we only see the problem sometimes when we drive). I'll look into the ignition cutoff but it doesn't sound like it's that as it doesn't always do it when we drive - only sometimes.
I was hoping there would be a way to get diagnostics from the check light somehow.
Having it serviced is probably not a bad idea but my problem is that I haven't really found an RV tech I trust to know what he's doing ...
