Originally Posted by gccoates
I just finished installing a new PD4655V in my 2019 16’ Caravel
. Took a bit longer than expected but it worked out well. The main confusion I had was the lack of a VCC+ port. I joined the two red positives in the available port on the new board. It all works except my battery disconnect switch. Is that because the convertor has this function built in?
While I do not have the same trailer or original converter/charger you had, I did replace the Parallax converter/charger in my trailer with a Progressive Dynamics unit.
I believe you have mis-wired your new installation. In my Airstream, there is a 6AWG wire that runs from the batteries thru the disconnect switch relay to the low voltage fuse block and terminates on the center lug of the fuse block. The POS wire from the converter/charger should terminate on a separate lug on the low voltage fuse block. If you have both of them on the same lug, you in effect over ride the disconnect switch.
Check your low voltage fuse block. While I am unsure yours and mine are the same, there are three lugs ... the one on the left is not used, the center lug connects to the converter/charger. The right lug connects to the battery via the battery disconnect switch.
As a note the negative from the batteries and the converter charger should land on a terminal block reserved for negative wires. This is not the same as the neutral bar in the power section.
Hope this helps.