Thought I'd close the chapter on this unit for us
I did confirm it is the Aria Deluxe I unit.
I did have a tech talk me into replacing the full flapper mechanism assembly, vs just replacing the seals again.
We are now on our first trip after this work was completed, and had 8 glorious days of the bowl holding water. Was still the loud 'prepare to dive, blow all ballast' loud flushing sound, but it was holding water in the bowl. (The tech said he'd see this before, where the full mechanism assembly was either warped, or some other out of alignment, where a new seal would help for a very short time, but never last. He'd had good luck replacing the full flapper mechanism assembly, which came with new seals as part of the assembly.)
Well, yesterday we flushed the toilet, and the flapper stayed open. Went thru the process of trying to close it, pushing the big button, and it started two close a bit, but hen went back into the fully opened position. Tried reset it with holding the two buttons, made noises, but noting happened. Tried the big button again, and same thing, partial closing then opened. AND NOW NOTHING. No water, no sound, not nothing. Inline fuse is good, validated that power was getting to the fuse. So either a bad flapper mechanism assembly unit, or more likely by it's behavior, the control board.
I should also point out that I 'hedged my bet', by adding my name onto a want list for Sealand Opus unit at two Southern California RV salvage yards.
So, I'm tossing in the towel. Ordered the Aria Classic High Profile unit, which is KISS and gravity fed. Will be delivered to the RV Park we'll been staying in Indianapolis. (Going for the 100Th Indy, if the weather permits
The only reason we held off on going this route before, was the wife did not want a 'step pedal' flusher. (She was concerned about keeping it clean, and tripping on it at night time visits.) But with us now doing the 30 turns of the manual knob to open, pour water down, then 30 turns of the manual know to close - the gig was up!!!
I wanted to confirm that many other updates came my way that the Area Deluxe II, while still a bit loud, was not as problematic as the Deluxe I. I also did look at a hand flush unit from Dometic, but reports of flimsy handle and ball valves resulting in leaking bowls, pulled that off of my list.
So in the next week or so, we'll have a manual KISS gravity throne...
Best to all, and may the flush be with you,