I recently changed to AGM battery and accordingly changed the charging programme using the DIP settings on my MultiPlus 12/1600/70 which I operate together with the multi control unit. Following the instructions I used the device only with the inverter on and unplugged from the shore line. I set DS1 off and DS2 on and toggled DS3 one time. According to the manual this should provide an absorption voltage of 14.7V. However, I never can see this voltage on the batteries which are continuously monitored using a voltmeter provided with the solar panel controller. Without sun - thus only the MultiPlus charger - the max voltage is about 14.2V and then the device goes into float (13.8V). The solar controller (with sun) goes up to 14.75V as set.
Is the setting as provided in the manual correct? Is ON where the DIP says ON? Is the DIP changes not been stored with the Control Unit connected? Thus - do I need to unplug the Control Unit before toggling DIP3 to store the setting? Maybe somebody has an advice.
