Atwood water heater malfunctions

Thanks dougrainer, Pretty sure that electrode has never been replaced. I'll add it to my list of things to do. I'm bringing it in to the propane dealer next week & we'll go over the list I accumulated here. Our propane guy is more knowledgable than the RV dealer techs and more open to 'outside' opinions.
Many thanks, gents! I'll try and update as to what we find amiss.