Victron MultiPlus II suddenly trips 30A shore power breaker when charger activates — troubleshooting help?
My Victron MultiPlus II has been working perfectly with no issues until recently. Now whenever I connect to shore power, the 30A circuit breaker on the dock pedestal trips as soon as the charger kicks on.
I connected to VEConfigure and lowered the shore current limit from 30A down to 20A, but it still trips every time the charger activates. The inverter side seems to work normally when running from the batteries. I already tried using two different cord connections and the same result occurs.
Things I’m wondering:
Could this be a failed charger component inside the MultiPlus II?
Could the AC input side be causing a surge or fault when charging starts?
Is there a way to test whether the issue is the MultiPlus vs. the dock power?
Are there specific VEConfigure settings I should check besides the shore current limit?
What troubleshooting steps would you recommend before pulling the unit or sending it in?
Thanks!