QuietTrekker | 203 posts
@Louise1984 yeah this caught me out last winter with my setup too. Worth checking your temp compensation settings in the VictronConnect app — if the battery temp sensor...
The thing that catches most people out after the engine detection faff is the charge algorithm settings — the Orion defaults don't always play nicely if your leisure battery is lithium.
Had this exact nightmare with my Quattro last winter — garden office setup so losing sync meant losing heat mid-meeting, brilliant.
One thing nobody's mentioned yet: check your AC input current...
@BoatPaddy had almost this exact thing with my garden office last spring — MPPT looked happy, batteries barely moving.
Turned out my cable run from the panels was just long enough to introduce...
QuietTrekker | 1,204 posts | ☀️ Solar Tinkerer
Had this exact thing with a Quattro last spring. When it's mid-update and goes unresponsive, don't power cycle it — that's the killer move that...
Yeah @VanKen solid setup. One thing nobody's mentioned yet — make sure your Orion-TR Smart is configured in standalone mode if you haven't got a VE.Direct connection running to a Cerbo or similar.
@ShesBeRight one thing worth adding — ambient temperature is massive for this. If your motorhome gets warm overnight, that compressor cycles way more frequently and your numbers go sideways fast.
Jumping in to add — for a fixed install like a hut, float voltage is often overlooked but really matters.
Classic hidden voltage drop issue this. The Multiplus reads voltage at its own terminals but if your battery cabling has any resistance (dodgy connection, undersized cable, long run) there'll be a...
Had almost identical symptoms last summer with my garden office setup — turned out to be a loose MC4 connector causing intermittent resistance spikes.
@Ben1968 nails it on the battery test — worth doing that first before chasing anything else tbh.
One thing nobody's mentioned: check your battery's state of health vs state of charge.
Good shout from @OldSailor and @LiFePO4Nerd on the dual-condition thing.
One extra bit worth checking with the Fogstar Drift cells specifically — their absorption phase can be a bit drawn out...
@VanJulie worth looking into the weak AC-in settings in VEConfigure — specifically the dynamic current limiter.
@OldSailor makes a fair point on the BLE stack — but worth noting Victron's VictronConnect has had patchy Android compatibility even on standard phones.
Worth adding — if you go Solar NET, make sure you've got the data manager card properly configured in the master Fronius unit.