My son just took my tab 320 to hunting camp. The heat worked fine on gas the first night but the second night he froze. He could hear the heat "clicking" and trying to turn on but to no avail, draining the batteries in the process. Luckily, he was in a place where he could hook up to electric, and had no problem the next 4 nights.
The only thing I can think of is the solar didn't get enough sunlight, but sunny Colorado makes that seem unlikely. My other son had previously taken out one battery to put my spare tire on not knowing about the Victron app and disabling it before unhooking batteries. Is that a factor? Any thoughts?