I haven't a clue but am continually amazed at the complexity of your
boat. It strikes me that all these electrical systems will fail time and
time again draining a bit of the fun from cruising due to you always
needing to diagnose and then address - often at brutal expense
whatever's failed this day.

I went from an icebox / shore power only to a boat with shore power
HVAC, refrigerator / freezer and hot pressure water made hot by an
engine fired heat exchanger. The hot water after a few days at sea was
incredible but I am unsure if I'd do such complexity again. Even my
relatively simply rig was always subject to some failure or maintenance
demand. I got tired of it very quickly.

-paul