We are out for the first time in our RV after installing a new MultiPlus 12/3000/120 and three SOK 206 AH batteries. When the batteries are near fully charged the multi turns itself off terminating all 120v shore power to the RV. I have witnessed fairly large voltage (14.2 to 12) drops during these events which may be causing the MultiPlus to cycle off. I cycled the 3 SOK 206 AH batteries and went through a bulk charge. Shortly after entering absorption the unit cycles off and on just as it did before discharge/charge, terminating 120 volt shore power. The MultiPlus will handle moderate 120v loads without shore power but turns off when the air conditioner compressor kicks on.
I don’t understand why the MultiPlus will not allow shore power to pass through as described in Victron documentation. Disappointed in the system so far.