Caution... The newer SP6548 units WILL NOT parallel or connect split phase with slightly older units SP6548.
I purchased 2 SP6548 units end of year 2022 and one blew the PV1 side of the MPPT charger board. To get my off grid system back up ASAP, I purchased a new SP6548 to drop-in and get my system back up and running for the summer HEAT. Then, I would repair the older unit and have a backup.
Now, I have three units that will not work together... All SP6548's. Sun Gold Power says firmware matching will not remedy this situation.
IMHO they should have changer the model # with notes of them NOT being backwards compatible.
I purchased 2 SP6548 units end of year 2022 and one blew the PV1 side of the MPPT charger board. To get my off grid system back up ASAP, I purchased a new SP6548 to drop-in and get my system back up and running for the summer HEAT. Then, I would repair the older unit and have a backup.
Now, I have three units that will not work together... All SP6548's. Sun Gold Power says firmware matching will not remedy this situation.
IMHO they should have changer the model # with notes of them NOT being backwards compatible.
