Ah, the classic "BMS ghost" scenario. @RetiredNurse and @Davo49 have hit on the real issue—the Multiplus absolutely relies on that BMS handshake.
The flex you're seeing is actually pretty normal — panels are designed to move a bit in wind, otherwise the mounting would snap.
Crikey, that's a proper heart-stopper! Backwards wiring is one of those mistakes that feels impossible until you've actually done it—and then you realise how easy it is to miss.
The silver lining...
Brilliant to see another Cornish van dweller on the forum. Three years is when you've actually lived through the cycles rather than just survived them, yeah?
I'm curious what your power setup...
The separation point is what catches most people out. I've got a Victron Orion-Tr isolated 12/240V converter in my van setup, and honestly it's made the whole thing cleaner than trying to run...
Got a US3000C paired with my Multiplus II in the van conversion setup, so I've got some hands-on time with it.
The search function is genuinely brilliant. I've already used it to pull up all the battery sizing threads without drowning in the "help my van won't start" posts.
Though I'd say the...
The scaffolding comment made me laugh — mine's been lurking since July. Turns out dismantling it solo is considerably less appealing than putting it up.
Curious what your battery capacity is...
Brilliant to have you joining! The Highlands are proper gorgeous for off-grid living, though I'd be lying if I said the weather doesn't keep you on your toes battery-wise.
What's your current...
The transition period @DODGuy mentions is brutal, but honestly the psychological stuff compounds it.
Brilliant to have you aboard properly, @PanelSteve. Thirty years is no joke—that's proper depth of knowledge the forum could actually use.
