So I went ahead and installed a new Ultra 3000 charger inverter
when my old 4000 quit this year. I liked the idea of having the solar
controller built right in to the unit. This charger
also has a secondary charging
unit which I understood to be able to work
independently of the main charger. In addition to replacing the old inverter
I had to upgrade the controller as well a replace the existing shunt even though I had been told by the dealer that this new inverter would work
with my old MICC controller and shunt.
So after setting up the new system including the Masterbus network it turns out that I cannot make the secondary charger work as a 3 step charger independent of the main charger. With the dip switch settings in the default position (follow main) there is no window to change the settings for the secondary charger only the ability to change to constant voltage and with the dip switch settings in the 3 step 12 v position the options remain the same. I understood that this secondary charger could be configured to any battery
style and charging
parameters independent of the main charger so maybe someone can steer me in the right direction. Talking to BLA in Brisbane
they do not seem to be able to figure it out either and they are the Mastervolt reps her.
This is important to me as I have dry spirals for the bow thruster that I wish to charge with the secondary charger and the house bank are flooded traction batteries
. The charging voltages seem to be quite specific for each.