I stored our 2018 Anthem and turned off the main battery switches, but inadvertently left on the inverters, which drained the house batteries. I started the Generator, which didn't want to stay running, but did finally. The systems slowly came on line, but my Vega touch showed a transfer switch fault. The transfer switch, in the belly, showed a low voltage fault (red light) on the face of the switch. My question is, do I have to first charge the house batteries to get that error light to go out, or will running the generator work too? Could I have damaged the transfer switch, or the batteries, from the house batteries draining? The house batteries are almost new AGM batteries. All insight is appreciated. Thanks, David