I mentioned low end units having problems with low flow firing issues! I have seen it first hand, like I mentioned above. It's not about pressure it's about flow..we never had a problem boondocking with them in the past they are great units your coaches pump should have more then enough to run it. Kinda wondering if he may have had something clogged or something? They do have screens that should be cleaned now and then if you have a good system in your rv you should have no problems.. that's just my opinion ofcourse but I do install them for a living. And definitely upgrading this coach also!
Ps I would never recommend or use an electric tankless!! LP is the only way to go.
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