Hi. I have a problem with the MPPT RS 450 charger. I have two identical strings connected to it, pointing in exactly the same direction. I want to charge the battery only from the DC charger, so I have the charger built into the Multiplus turned off via ESS Control Node.
From time to time one of the mppt trackers cuts production. When I turn on the AC charger for a couple of seconds, it starts producing at full power again even when the AC charger is turned off again. See in the video how it looks exactly.
There is also problem with mppt to even start after the night, when the MP charger is off. Look at the picture below.
My goal is to charge the battery only from dc mppt when there is a grid and export as much as I can to the grid from ac coupled inverter.
