Looking for some help with my buddy's setup in a Ford Transit camper van that I put together and installed.
We literally finished the day we left for the trip with our families in our vans so there was almost no time for testing and now we have some details to figure out.
We've been on a road for few days and he's reporting some issues with charging on shore power and there's some other issues with voltage sense.
Cerbo GX and display
Victron MultiPlus 3K inverter charger connected to Cerbo with a Victron LAN cable
800ah of Renogy lithium
500A Victron shunt connected to Cerbo with VE. Direct cable and also talking to the inverter thru the local wireless network
Software is up to date and firmwares are updated.
First thing I noticed is that Cerbo does not see the state of charge
Cerbo shows "Voltage Sense error"
Second issue is that MultiPlus won't maintain batteries at full charge when plugged in to shore power while load is applied
Let's say he starts with a full charge (alternator charge) and we pull into the camp ground.
He has a DC AirCon that draws 40A
He goes to sleep while plugged in to shore.
Batteries are not charging because they are full so MP shows float but he's pulling let's say 50A for for all of his loads and he wakes up 8 hrs later with his batteries at 75% all while plugged in to the shore power.
How do I use MultiPlus for power supply instead of batteries???
What causes that voltage sense error?