drb1025
Guru
I just replaced both starter batteries with new 8Ds. At the breaker panel, the battery selector switch can be in 1: Normal, 2: Both, or 3: Emergency House. I assume Normal allows each starter battery to start its respective engine and the Both setting combines the starter batteries in case one is weak. When the switch is at Normal, the voltage gradually declines, the lights dim, and the DC fridge shuts off due to lack of power, even with the battery charger on. I switch it to Both and the voltage jumps up, the lights brighten, and the fridge starts. There are at least two issues: the house is running off the starter, and the starter that runs the house is not charging. I am keeping the battery selector to Both for the time being, but need to identify why the Normal position is not functioning properly. Any ideas? I also have an inverter bank that I thought was running the DC house and a few AC circuits.